India Escalator specifications 2012

8/12/2019 India Escalator specifications 2012

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Page 1 of 46 Effective from June 2012Specification no. RDSO/PE/SPEC/TL/0095-2012 (Rev ‘1’)Date of Draft: 04.06.2012

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TECHNICAL SPECIFICATION FOR PASSENGER-ESCALATORSTO BE INSTALLED AT VARIOUS RAILWAY-STATIONS OF

INDIAN RAILWAYS

SNAmendment Revision

ReasonNumber Date Number Date

1. 1st 16.12.08 - - Cl. No. 1.7(b), 15.1, 25.1 modified & cl. No. 15.7, 15.8deleted as per Rly Bd letter no.

98/Elect(G)/150/9/Pt.(Escalator) dt. 15.12.08

2. 2nd 23.04.09 - - Additional para inserted in cl 1.7 and 2.4. Cl 1.5, 2.8, 7.0& 20.5 modified and Cl 1.7(iv) deleted, as per Rly Bd

letter no. 98/Elect(G)/150/9/Pt.(Escalator) dt. 23.04.093. 3rd 24.06.09 - - New Clauses 2.4.5, 2.4.6, 2.6.5, 2.5.3, 2.14.4 added;

clauses 1.1, 1.5, 2.5.1, 2.5.2, 2.10, 7.0, 9.1.11, 9.2, 10.9,15.3, 16.1, 27.0 modified and clauses 1.7 b (iii) and 18.0

deleted.

4. 4th 17.07.09 - - Clauses1.1, 1.5, 7.0 amended5. 5th 27.09.20

10Clauses No. Index, 1.7b(ii), 2.16, 4.0 ,7.0, 8.0, 9.0 11.0,

12.0, 12.1.1, 12.1.2, 12.1.3, 12.2.1, 12.2.2, 12.2.3,12.2.5, 12.3.1, 12.3.2, 13.1, 14.0, 20.2, 20.5, 22.3, 23.0,23.1, 23.2, 24.1, 24.2, 24.3, 24.4, 24.6, 24.8, 25.1, 25.2,

25.3, 26.1, 26.3, 26.6, 26.8.1, 27.0, 27.1, 27.2, 28.1,28.6, 29.1, Definitions (Part-ii b)Modified&Clause

nos.15.0 and 26.4 deleted as per Railway Board letterNo. 98/Elect.(G)/150/9/Pt. dated 10.09.10.

6 - - 1 04.06.2012 Rationalized the spec and major editorial changes toimprove its readability and clarity.




INDEX

Foreword 31.0 Scope 32.0 System Details & Schematics (Construction) 4

3.0 System Operating Conditions 174.0 Infringement of Patent Rights 175.0 Governing Specifications 176.0 Service Conditions 177.0 Technical Specifications 188.0 Other Key Technical Information Related To Escalator, 19

To Be Supplied By Each Bidder Along With Their Offer9.0 Safety Devices/ Features Required 2010.0 General Requirement 2711.0 Electromagnetic Compatibility Requirement (EMC) 2812.0 Testing & Inspection 28

13.0 Escalator Installation and Final Acceptance Testing 3014.0 Withdrawal of Approval 3015.0 Deleted 3016.0 Lighting 3017.0 Accessibility 3118.0 Inspection Doors 3119.0 Movement Of Material 3120.0 Installation & Commissioning 3221.0 Labeling And Marking 3222.0 Packing, Shipping And Delivery 3223.0 On-Site Support To Contractor 3224.0 Warranty 3225.0 After sales services 3326.0 Maintenance 3327.0 Training Program 3428.0 Operation And Maintenance Manuals 3529.0 Quality Assurance 3630.0 Accessories 36 Annexure-1 37Annexure-2 38Annexure-3 40

Definitions 45




TECHNICAL SPECIFICATIONS FOR PASSENGER-ESCALATORS TO BEINSTALLED AT VARIOUS RAILWAY-STATIONS OF INDIAN RAILWAYS

FOREWORD

This specification defines the objectives, guidelines and requirement for thedesign, manufacture, supply, installation, testing and commissioning of heavyduty escalators at Stations of Indian Railways.

1.0 SCOPE

1.1 This specification covers design, manufacture and supply at site, installation,testing and commissioning of heavy-duty, reversible escalator to be providedat the Railway Stations of Indian Railways for semi outdoor application.Railway shall provide adequate shade on the top and the same shall beextended on the sides of the escalator so as to prevent the following

conditions which would put safety of the public at risk: rain induced slipperyconditions on escalator’s tread surfaces, umbrellas being blown away bystrong winds and burns due to overheating of handrails, steps, etc. due todirect exposure to Sun. In addition, the shade will offer protection to theescalator.

1.2 The Escalator shall be of State-of-the-art technology, having nominal stepwidth of 1000mm with appropriate numbers of horizontal Steps on top andbottom, with maximum carrying capacity calculated as per EN115-1:2008 of100 passengers per minute at nominal speed of 0.5 m/sec in normal operationcomplete with all safety features and shall fully comply with InternationalStandard EN-115 latest version.

1.3 Escalators shall be heavy duty reversible type and capable of operating safely,smoothly and continuously in both directions for a period of not less than 20hours a day, seven (7) days a week with an alternating passenger loadreaching 100% of Contract Load (120kg per step) for two hours and 50% ofContract Load for the following hour within the environmental conditions asstated in the specification and at the location where the escalators are to beinstalled.

1.4 The vertical-height of foot-over-bridge (passenger walking-level) from theGround-level, at any of the above-mentioned Escalator Installation Points aregenerally varying between 5.0 meter to 7.0 meter at the different RailwayStations and in exceptional cases, it may be around 4.5 meter or 8.0 meter.

1.5 The angle of inclination of escalator shall be 30° and minimum transitionradius shall be 2.6 meters at the upper landing and 2.0 meters at the lowerlanding as per the requirement of EN 115.

1.6 The purchaser/ user railways shall furnish the exact information by filling in allthe entries, as per the format given in Annexure 1.

1.7 The contractor’s scope of work shall include but not be limited to the followingworks:-




a) Provision of escalators in stations for passenger movements.

b) All associated civil works for

i) Providing pits for housing escalator motors, etc.

ii) Intermediate support (if vertical rise is more than 5m)c) Transportation of material and equipment for installation purpose.

d) Spare parts, special tools, testing and diagnostic equipment andmeasuring instruments.

e) Training.

f) Documentation.

g) Control and monitoring system for Escalators.

h) Maintenance for specified period.

i) Services.

1.8 As for site preparation works (civil and electrical), with the exception of itemsof works specifically kept under contractor’s scope by this specification, all theother works will automatically fall under railways’ scope. Some of the importantsite preparation works to be undertaken by railways would include: FOBextension and load bearing support pillars thereof, a lockable closet/ enclosurefor the controller (see Cl. 2.2.6), provision of earthing pits for achieving anearthing resistance of max 0.5 Ω, making power supply available for theescalator, etc. Yet another important work to be carried out by railways will betowards enabling the level of the escalator Floor Plate to be higher than the

platform floor level by at least 55mm. This is absolutely essential forminimizing the chance of rain or cleaning water running into the escalatortruss. But at the same time, it will be necessary to minimize the risk ofpassengers stumbling/ falling down due to the two differential floor levels.Therefore, just after the escalator floor plate, there would be a 315mm longstretch of horizontal floor surface (flush with the escalator floor plate) andthereafter, a 315mm or longer stretch of floor sloping downwards at an angleof approx. 10o towards the platform floor level. The inclined floor would bridgethe (higher) escalator floor plate level and the (lower) platform floor level. Thecontractor will interface and co-ordinate with the railway agency(ies)

undertaking the site preparation works. The complete responsibility ofinterfacing and co-ordination shall be of the contractor till final commissioningand handing over of the escalator to the Railways.

2.0 SYSTEM DETAILS & SCHEMATICS (CONSTRUCTION)

The complete Escalator shall comprise of all parts and accessories, which arenecessary for its efficient operation, whether specifically mentioned or not.The key parts and accessories along with their functions and features arelisted below:

2.1 Drive Unit




2.1.1 Each Escalator shall be independently driven by a geared type drivingmachine (or traction machine), comprising mainly of the driving motor, acoupled Gear Box unit (for Speed reduction) and an electrically released andmechanically applied Brake (for stopping the escalator). A VVVF convertershall control the Driving Motor.

2.1.2 Each traction machine shall be mounted within the truss or the machine pit andshall be removable en-bloc from the truss for repair or maintenance. Suitablelifting points shall be provided.

2.1.3 The escalator’s driving machine shall be suitable for operation on 3-phase,415Volt ±10%, 50Hz ± 3% AC supply and it shall comply with IS: 325/IEC60034. The Total Harmonic Distortion (THD) due to escalator motor driveshall be within the following limits:

Current (I)* Maximum THD (%) in each phase

I < 40A 35% 40%40A ≤ I ≤ 80A 35%80A ≤ I ≤ 400A 22.5%

* Fundamental current of motor drive at no load and rated speed** Electric supply direct from building’s feeder circuit*** Electric supply not direct from building’s feeder circuit

2.1.4 The 3-phase Induction Motor shall be totally enclosed with external coolingfins having minimum IP-55 Protection and class F Insulation level.

2.1.5 Equipment shall be designed to operate quietly and smoothly. Escalator shall

produce no noise louder than 65 dBA measured 1.5m above the floor or steplevel at the entrance combs at both ends with the escalator operatingnormally, either free running or under load (ambient noise level shall notexceed 49 dBA). The required acoustic treatment shall be provided asnecessary, to meet this requirement.

2.1.6 Vibration level shall not exceed 10mm per sec. (RMS) as tested with a FastFourier Transform (FFT) analyzer; readings will be taken throughout the travel ofthe exposed steps.

2.1.7 The overall efficiency of the combined motor and gearbox shall not be less than82% at full load.

2.1.8 The starting current shall not exceed 3.5 times full load current. The startingcurrent characteristic and the speed/torque characteristic for different dutyranges shall be submitted for acceptance by the purchaser.

2.1.9 The brake shall automatically bring the escalator to a halt whenever the poweris interrupted, or any of the operating and safety switch is operated. If more thanone brake is provided, all brakes shall operate simultaneously. The minimumand maximum stopping distances for the various conditions are as follows:

(a) Without load: 0.20m (minimum)(b) With full load: 0.20m (maximum)






railways. It should be ensured that location of the controller is within 10m ofthe escalator. Further, wiring work including conduits/ trunking from theincoming isolators to escalator equipment shall be provided by the Contractor.The Contractor shall co-ordinate with railways for the layout of the equipment .

Necessary approval of drawings shall be taken from the purchaser.

2.2.7 If uninterrupted power supply is required for some components of thecontroller, then the relevant load thereof will need to be advised by theescalator manufacturer. Railway will arrange the uninterrupted power supplyfor this, if essential.

2.3 VVVF Converter

2.3.1 The escalator shall comprise of a VVVF converter (variable speed control),integrated with the escalator controller to control the driving motor. Oninstallation, this shall ensure the escalator’s movement and speed control, viz

- starting and normal speed of the escalator on detecting the incomingpassenger(s) as well as its crawling speed (less than 0.2 m/sec) and/orstoppage, in the absence of passengers.

2.3.2 The VVVF Converter shall also control the acceleration/ de-accelerationduring the motor starting/ stopping for reducing/ limiting the starting currentand the frictional wear and tear of the brake liner.

2.4 Truss and Track

2.4.1 The escalator shall be provided with Structural steel truss or girder designed tosupport the escalator’s dead weight which shall include any exterior claddingsand decking extensions plus passenger load. Passenger loading shall beassumed as 5,000 N/m2. The truss shall also be designed to support anadditional load of the outer cladding panels and truss claddings up to amaximum load of 300N/m2. The truss design for IR must ensure that for anescalator vertical rise upto 5m, there is no need for intermediate support; thisaspect should be proven by the FEM analysis results to be submitted by thecontractor. Along with FEM analysis, drawing of the truss must also besubmitted by the contractor for proper appreciation and quality supervision bythe purchaser.

2.4.2 The truss design shall also ensure required safety to sustain the Steps andrunning Gear in operation. In the event of failure of the track system, it shallretain the running gear in its guides.

2.4.3 The construction and design of truss shall be such that it allows for easyinspection of the interiors of the escalator.

2.4.4 Maximum deflection of Truss shall not exceed 1/1000th of the distancebetween supports (distance between the supports for this purpose being notless than that corresponding to a 5m vertical rise of escalator).

2.4.5 Cladding of the truss shall be done with SS 304.




2.4.6 The truss of escalator shall be hot dip galvanized up to minimum thickness of85 µ . Other parts inside the truss such as track, return station, shaft etc. shallbe given suitable anti-corrosive treatment with zinc plating or similar process.

2.4.7 The track system shall be constructed of steel with zinc plating. The track

surface shall be straight and smooth. All joints, where possible, shall be diagonalacross the width of the running surface. Maximum deflection of track systemshall be designed not to exceed 1.00mm between any two adjacent tracksupports under 6,000 N/m2.

2.4.8 The track system shall be provided with counter guards throughout the entirestep band to prevent the uplifting of the steps and step chain rollers. For areaswhereby counter guards cannot be installed, step hooks shall be provided.

2.4.9 The tracks wearing surfaces shall be a minimum 5mm thickness. Thisrequirement is applicable to the step roller track and the chain roller track for

both the passenger side and the return side. The wearing surface of the returntrack can be of 3mm thick subject to design approval by the purchaser.

2.5 Balustrade

2.5.1 The escalator shall be provided with a solid inclined balustrade on its eachside, having adequate mechanical strength and rigidity.

2.5.2 The Interior and Exterior Panels shall be fixed in a manner to withstand thestresses and impacts expected during operation and use of the escalator at itsfull capacity. The balustrade height shall be minimum 1000mm.

2.5.3 Material of the skirting shall be SS 304 having thickness of 2.0 mm for skirtpanels and 1.5 mm for remaining panels.

2.5.4 The distance between the inner decking immediately below the handrail shallnot be less than 1200mm.

2.5.5 The inner and outer decks shall be sufficiently reinforced in the non-visiblesection with cold rolled steel sheet of minimum galvanization thickness of 85microns.

2.5.6 (a) The balustrade shall be designed to withstand the forces as per therequirements of EN-115. Moreover, the interior panel, skirting and the skirtdeflectors also shall withstand the forces as per the provisions of EN-115

(b) Suitable provision shall be made in the balustrade for dampening of noiseand vibrations and prevention against fire. This is done by providing coatingof noise and vibration dampening material and fire resistant material on bothinner and outer claddings.

2.5.7 Suitable materials or suitable type of lining shall be provided underneath thedeflector device in order to achieve a coefficient of friction as per the provisions

of EN 115.




2.5.8 Appropriate measures shall be taken to discourage people from climbing onthe outsides of the balustrade if there is a danger of people falling from them.

2.5.9 For escalators adjacent to walls, access restriction devices shall be required asper the provisions of EN 115.

2.6 Handrail and Handrail Drive System

2.6.1 The escalator shall be provided with black colour handrails made of a special,high-quality fire retardant water-repellant synthetic rubber material, havinglong-durability. The minimum breaking strength of handrail joint shall begreater than 85% of the minimum breaking strength of the handrail. Thehardness of the outer stock shall not be less than Shore 700+-5A0.

2.6.2 The handrails shall move in the same direction and at substantially the samespeed as that of the steps.

2.6.3 The handrail drive system shall be provided with guides immediately beforeand after the drive wheel. The returning portion of the handrail shall besupported by guide rollers at not more than 2 m interval. Newel wheels shallbe provided at the upper and lower newels. Adequate provisions shall beprovided to maintain proper tensioning throughout the service life of thehandrail and prevent tightening/loosening and excessive heating up of thehandrail during operation. The temperature rise of the handrail duringoperation shall not exceed 6ºC above station ambient temperature.

2.6.4 The handrail shall overlap sufficiently with the handrail decking (top deck), toprevent pinching and trapping fingers or hands due to running clearance. Thelips at the handrail shall be of sufficient rigidity to prevent the handrail frombeing easily removed from the handrail guides by a force of 300N.

2.6.5 The material of handrail guide shall be SS 304.

2.6.6 Appropriate action shall be taken to prevent the build up of static electricity inthe handrail.

2.6.7 Lifetime grease packed roller bearings of reputed manufacture are preferable

for all newel wheels. However, if non-lifetime bearings are used, greasingnipples for the wheel bearings shall be accessible without necessitatingremoval of balustrade panels from the passenger side.

2.6.8 The newel stands shall be of sufficient rigidity and suitably braced to the mainstructure of the truss to prevent undue distortion. Provision shall be made topermit checking of alignment of the newel wheels on site.

2.7 Step Tread

2.7.1 The escalator Steps shall be made of corrosion-proof Casting-grade

Aluminum Alloy, having sufficient mechanical strength and good constructionto fully satisfy the intended purpose of their use i.e. carrying the peak load ofpassengers without distortion.




2.7.2 Each step shall be supported on four wheels, two of which shall be the stepchain, wheels and shall be capable of carrying the basic load with the safetyfactor as per 2.7.3. Individual step loading shall be assumed as 6,000N/m².The design of the mounting of all wheels on the step shall ensure that the

centre line of the wheel shall remain perpendicular to the running track underall the load conditions. Step dimension shall have a tread width of at least 400mm deep and not more than 210 mm high.

2.7.3 Safety factors used in the design shall, as a minimum, conform to thefollowing:

• Trusses-as per EN 115 (as applicable for Public Service Escalators)

• Step roller, tracks and steps – 8

• Driving machinery – 8 for steel and bronze components; 10 for cast iron

parts.• Chains – 8.

• Any other item (if not specified elsewhere) – As per BS EN 115-1:2008 (asapplicable for Public Service Escalators).

2.7.4 The step shall be one piece, pressure die cast, high wear and corrosionresistant aluminum alloy. The step casting shall bear a marking, which clearlyindicates the month and the year of manufacture.

2.7.5 The step shall be type tested according to EN 115 (Latest version).

2.7.6 The tread surface of each step shall be slotted in parallel-direction to thetravel of the steps.

2.8 Main and Step Chains

2.8.1 The drive unit shall be connected to the main chain wheel (attached to themain shaft) with a duplex chain. The Main Shaft shall further drive the StepChain Bands.

2.8.2 The Step Chain Band shall be of endless roller type located on both sides of

the moving steps and having step chain strength value of 260kN or more.

2.8.3 The chain rollers/wheels shall have durable elastomer materials bonded to ametal die case hub. The shore hardness of the tyre materials shall be 92o ±3oA when cured. The bond shall have sufficient strength to avoid de-tyringunder all load conditions.

2.8.4 The chain rollers shall be located outside the chain links and shall be easilyreplaceable without dismantling the link. All chain pin shall be circlipped. Theminimum diameter of the chain roller and the trailer roller shall be 100 mm.The roller shall have a minimum width of 25 mm.

2.8.5 Each Step Chain shall be provided with an integrated Tension Device toensure its proper tension under varying load conditions.




2.8.6 All ball or roller bearings whether or not sealed for life time greasing shallhave a design life of at least 110,000 operating hours under operatingconditions.

2.9 Automatic Lubrication Device

2.9.1 The escalator shall comprise of an in-built automatic lubrication device, tolubricate the main driving-chain and step-chain automatically, which canensure their smooth-operation for a long period and thus shorten themaintenance downtime.

2.9.2 Corrosion resistant, oil tight drip pans of galvanised sheet of not less than2.0 mm thick shall be provided for the entire length of the truss and shall beof sufficient rigidity to support the weight of workmen. Drip pans shall bedesigned to collect and drain off both oil from the machines and water that

may enter through the landings, floor plates, exposed portions of escalatorsor from fire suppression systems. All gaps shall be properly sealed toprevent leakage. Means shall be provided to drain and collect any excesslubricating oil from the chains to removable container(s) at the lower landingmachine pit for easy removal and cleaning.

2.9.3 Guards shall be provided at the truss adjacent to the main drive chain,handrail drive chain and step chain to reflect oil splatters from the chainsback to the oil drip pan. No oil splatter shall be allowed to get onto the truss,the back of the outer cladding panels, the outside of the truss and brakes.There shall be no oil spillage through the outer panels, claddings or the trussto the surrounding areas. Proper means shall be provided to prevent theproblem of oil spillage on to machinery spaces, step risers and stepsurfaces.

2.10 Comb Plate

2.10.1 The escalator comb plates in the entrance/ exit areas must have easilyreplaceable comb segments, having teeth that interlock deep into the steps.All comb segments must be identical and easily inter-changeable. In theevent of some foreign body’s penetration into the comb segments, safety

contacts must bring the escalator to a halt. To activate the safety contacts,the comb plate must be able to slide horizontally.

2.10.2 The comb plate structure shall withstand a load of 6000N/m2 with adeflection not exceeding 2.0 mm. Comb plate should comply with anti-slipproperties as per EN-115.

2.10.3 The load which may cause a comb tooth to break at its tip shall be neitherless than 700N nor more than 1900N.

2.11 Landing Plate




2.11.1 The landing plate of the escalator meant to provide a secure foothold, mustbe preferably made of etched Stainless Steel ASTM - SS316 grade andshall have an Anti-slip Pattern as per EN-115.

2.11.2 The floor plate shall withstand a uniformly distribution load of 6000N/m2

over its entire area, the deflection shall not exceed 4mm during loadapplication and there shall be no permanent deformation after the load isremoved.

2.12 Key Operated Start Function

The escalator operation shall be started/ switched-off by a special keyprovided along with the escalator.

2.13 Traffic Direction Light

The escalator shall have traffic direction light of distinct color at highly-visiblelocation(s) near the escalator, to indicate the direction of its movement to theapproaching passengers and thus, prevent their wrong-way Entry.

2.14 Electrical Works / Items

2.14.1 All electrical works and switchgear for the escalator installation shall conformto the Indian Electricity Rules 1956 (with latest amendments).

2.14.2 All cables and wiring for open/elevated stations shall be fire retardent. Forcables to be used in underground stations, the additional requirement is thatthey shall be made from halogen free materials. No bare Conductor shall beused in any Escalator as it may cause electrocution danger to the personnel.All cables except those within the enclosed controller shall comply thefollowing requirements:

i) All cables used shall be rated for 1.1 kV Voltage gradeii) The conductor shall be of stranded conductor composed of plain

annealed copper wire complying with IEC 228, Class 2.iv) The insulation shall consist of an extruded layer of cross-linked

polyethylene complying with IEC 502.v) Fire retardant, low smoke, halogen free materials shall meet the

following requirements:

a. London Transport Executive Three Metre Cube SmokeEmission Test, using optical measuring instruments. Themaximum value of absorbance AO (ON), AO (OFF) shall be0.8 & 1.2 respectively.

b. The US National Bureau of Standard Smoke Chamber Test,used to evaluate plaque samples of materials of constantthickness. (NFPA-258 Smoke Generation of Solid Materials1982). The maximum specific optical density shall be 170under the non-piloted polluted condition.

c. The flame propagating criteria of US IEEE Standard 383, witha minimum test short circuit time of five minutes, in the IEEEStandard 383 test.




d. IEC 332 Parts 1 and 3, Category B, tests on single andbunched cables under fire conditions.

e. Limiting Oxygen Index of at least 30, to ASTM D 2863.

f. A temperature index (TI) of 260°C to ASTM D 2863.

g. All insulation is to be moisture and heat resistant, withtemperature ratings appropriate to the application conditions,and in no case lower then 90°C 120°C.

h. When a sample of the cable is subjected to a combustion testfor the determination of the amount of halogen acid gases(other than hydrofluoric acid) as set out in IEC 754 - Part 1the halogen acid evolved shall not exceed a maximum of0.5%.

Fire retardant materials shall meet the requirements of item c, d, e, f and gonly.

2.14.3 .All electrical equipment supplied and installed shall at least have thefollowing class of protection for dust and water.

Machine : IP 55Controller : IP 55Isolating switches : IP 65All safety switches : IP 65

2.14.4 In general, bolt, nuts, shims and other hardware should be zinc plated.Fasteners visible to the public shall generally be of stainless steel. The

generally applicable engineering principle will be that fasteners shall beequal to or of greater corrosion resistance than the most corrosion resistantmetals being fastened.

2.14.5 All contactors, relay contactors and safety switches shall comply to therequirements of EN 115.

2.14.6 Insulation resistance between conductors and between conductors and earthshall be as per the provisions of EN 115.

2.14.7 Cross-sectional area of the conductors of safety circuits shall comply to the

EN 115.

2.14.8 Safety related connectors and devices shall be of plug-in type which can beextracted without the use of a tool and shall be impossible to re-insert themincorrectly.

2.15 Grease/ Oil/ Dirt and Water (separate) Collector & Drainage Sumps

Separate collector and drainage sumps for loose/ falling/ accumulated -grease/ oil/ dirt and water shall be provided in the escalator, at its lower returnstation, to ensure the escalator’s cleanliness w.r.t. these elements and thus,preventing the happening of any likely hazard due to them.

2.16 Design criteria and Submittals




2.16.1 Design criteria

The design shall meet the following criteria: -

a) Application of state of the art technology

b) Service proven design

c) Design life 30 years

d) Minimum life cycle cost

e) Low maintenance cost

f) Use of interchangeable, modular components

g) Extensive and prominent labeling of parts, cable and wires

h) Use of unique serial numbers for traceability of componentsi) High reliability

j) Less energy consumption

k) System safety

l) Adequate redundancy and factor of safety

m) Fire and smoke protection

n) Use of fire retardant materials

o) Environment friendly

p) Adherence to operational performance requirements

q) Maximum utilization of indigenous materials and skills, subject toquality conformity

r) Safety against garments such as Saree, loose cloths, etc.

s) All ball or roller bearings whether or not sealed for life time greasingshall have a design life of at least 110,000 operating hours underoperating conditions.

t) Safety against water flooding in pit.

2.16.2 Submittals

A. Every bidder must submit the following documents:

A.1 Detailed general arrangement/ layout diagram(s), which shall convey thefollowing minimum information:

a. Vertical riseb. Horizontal span lengthc. Step widthd. Handrail type

e. Handrail center distancef. Width of trussg. Width of escalator




h. Width of end opening & Piti Detailed pit dimensions j. Width of openingk. Inclined span length corresponding to 5m vertical rise

B. The contractor (successful tenderer) will be required to submit the followingdrawings, designs and data for approval by the purchaser:

B.1 Fully dimensioned layout in plan and elevation indicating componentlocations, structural supports, access spaces, and point of entry.

B.2 Loads on supporting members, reaction points and loads, and deflectionsunder varying loads. Contractor shall be responsible that theseparameters are within safe limits and shall provide the supportingcalculations.

B.3 Details of balustrades, deck, and skirt panels showing reinforcing jointing,

anchorage, size, shape, and materials of each component, method ofassembly, finishes including push button fixtures, key switches andrequired signage.

B.4 Drawing for truss, track system and supports, including drive chain andgear train; step chain including chain pitch, step and trailer wheels; size,shape and material of each component.

B.5 Drawing and technical data of the drive system, step drive system,handrail drive system, brake system controller and safety devices andswitches.

B.6 Layout of electrical system including motor, control panel; disconnectswitches directional start and stop key switches; emergancy stopswitches and covers; light fixtures and control devices; schematicdiagram including single line power diagram of the escalator system,control wiring diagram and sequence of operation, indicating interfaceconnections.

B.7 Complete schematic of all internal components and circuit boards andwiring for external device; logic diagrams and application programmingsource code of controller; complete wiring diagrams with raceway types,sizes and conductor identification.

B.8 Step chain detail for material configuration, arrangement and lubricationrequirement.

B.9 Step nosing radii at upper and lower end; step assembly including axle,step tread, rollers, frame and riser; safety brush material, mountingmethod and profile.

B.10 Manufacturer’s design data and material specifications for allreplacement parts and equipment.

C. The contractor (successful tenderer) will be required to submit the followingOperation and Maintenance Manuals:

C.1 Drawings, installation and maintenance instructions, and other datapertinent to the components used in escalator systems, including detailed




repair data for all components, including disassembly, inspection/gauging/ torque requirements, inspection and testing schedules,reassembly, testing methods and other related information. Manuals shallcover all mechanical and electrical components, operating panels,controls and indicators. Exploded view drawings shall be included to

facilitate repair and maintenance functions.C.2 Bill of Materials (BOM) for each escalator. The BOM will be a list of all

assemblies, subassemblies, components and individual parts of theescalator. Each assembly shall be broken into subassemblies, whichshall in turn be broken into components, subcomponents, or individualparts. This fine level of detail will be required in the future for placingorder on the OEM for individual replacement parts and for othermanagerial purposes.

C.3 Maintenance tool manuals and software documentation.

D. The contractor (successful tenderer) will be required to submit the followingFMEA for escalator safety circuits:

D.1 Failure Mode and Effects Analysis for all escalator safety circuits andcomponents which could affect public safety.

E. The contractor (successful tenderer) will be required to submit the followingelectrical calculations for approval by the purchaser:

E.1 Power system calculations for the main feeder circuit for operation at themachinery rated load and for the escalator starting condition.

E2. Electrical/ Mechanical calculations for the sizing of driving machine,motor and brake.

F. The contractor (successful tenderer) will be required to submit the followingbrake calculations:

F1. Detailed calculations for the brake for each escalator. This will include:braking distance and deceleration rate for all loads from no load to themachinery rated load, and for up and down directions.

G. The contractor (successful tenderer) will be required to submit the following heat release calculations:

G1. Heat release calculations for machine room and controller enclosures.

2.17 SAFETY SIGNS

2.17.1 All signs shall be written in clearly legible characters in bilingual (as decidedby the purchaser) where the escalator is in operation.

2.17.2 The following mandatory signs shall be provided by the contractor and fixedin the vicinity of the entrances as per the dimensions mentioned in EN 115:

i) “Small children shall be held firmly”




ii) “Dogs shall be carried”iii) “Use the handrail”iv) “Push chairs not permitted”

3.0 SYSTEM OPERATING CONDITIONS

3.1 The escalator shall be able to make use and operate at the below mentionedpower supply conditions. Power supply shall be made available by IndianRailways near the escalator installation point:

a) For power supply: AC 3-phase, 415Volts ± 10% 50Hz ± 3%.b) For lighting supply: AC Single-phase, 220Volts ± 10% 50Hz ± 3%.

4.0 INFRINGEMENT OF PATENT RIGHTS

Indian railways shall not be responsible for infringement of patent rights

arising due to similarity in design, manufacturing process, use of thecomponents used in design, development and manufacturing of escalator andany other factor which may cause such dispute. The responsibility to settleany such issue lies with the Contractor.

5.0 GOVERNING SPECIFICATIONS

The escalator shall comply with the following Standards:-

• EN-115: safety rules for construction and Installation of escalators andpassenger conveyers.

• IS-4591: Code of practice for installation and maintenance of escalators.

Note: Latest version of the above standards shall be applicable.

6.0 SERVICE CONDITIONS

6.1 The escalators shall be installed at the notified Railway stations all over India andshall be able to perform under the service conditions prevailing there.

6.2 Moreover, the escalators shall be capable of performing in the tropical climate of

India, under the extreme environmental conditions listed below:

Maximum Ambient AirTemperature

550C

Minimum Ambient AirTemperature

-5 C

Max. Relative Humidity 100%Atmosphere Extremely dusty and dry weather and desert

terrain in certain areas. The dust contents in airmay reach as high values as 1.6mg/m³.

Coastal Areas The equipment shall be designed to work in

coastal areas in humid, salt laden and corrosiveatmosphere.




The maximum value(s) of the Conditions in the Coastal Areas will be as follows:

Max. pH value 8.5Sulphate 7.0mg/litreMax. concentration of Chlorine 6.0mg/litre

Max. conductivity 130 micro sec/ cmAnnual Rainfall Ranging between 1750 to 6250 mm with

thunder stormAltitudes Not exceeding 1200m above Sea-level

7.0 TECHNICAL SPECIFICATIONS

Some of the salient points of the spec. are summarized as follows:

• Application : At Railway stations – semi-outdoor application.Railway shall provide adequate shade on the

top and extended on the sides of the escalators.

• Nominal speed : 0.5 m/sec in normal operation.

• Angle ofinclination

: 30º (Depending upon space availability at theinstallation point)

• Vertical rise : Between 5.0 meter and 7.0 meter (To be exactlyspecified by user railways in Annexure 1) - Inexceptional cases, it may be around 4.5 meter or8 meter.

•

Horizontal span : Shall be based on the Contractor’s design andother parameters, namely vertical rise, number ofhorizontal steps, inclination and transition radius,etc.

• Truss Design : For vertical rise upto 5m, no intermediate supportshall be necessary.

• Maximumpassengercarryingcapacity

: 100 passengers/ min at nominal speed of 0.5m/sec.

• ApplicableStandards

: EN-115; IS-4591 (latest versions)

• Power supply : AC 3ø, 415V±10% 50Hz±3%

• Lighting supply : AC 1ø, 220V±10% 50Hz±3%

• Step Chainstrength

: 260 KN

• Chain rollers : Outside the step chain

•

Handrail guideat newels : Newel Wheel




• Horizontal steps : Number of horizontal steps at both the upperand lower landings shall be 4.

• Landing plate : Etched stainless steel ASTM SS316 grade withanti-slip pattern

• Moving step’smaterial

: As per clause no. 2.7

• Nominal step’swidth

: Minimum 1000 mm

• Balustradepanel material

: ASTM- SS304 hairline finish

• Balustradeheight

: As per clause no. 2.5.2

• Handrailmaterial

: As per clause no. 2.6.1

• Handrail color : As per clause no. 2.6.1

• Start function : Key operated switch

• Controlswitchgearprotection

: IP 55

• Dirt/ oil/ greaseand watercollector &drainage sumps

: As per clause no. 2.15

Note: Each Bidder must submit their Compliance or Deviations in a “ComplianceStatement”.

8.0 Other Key Technical Information related to Escalator, to be supplied byEach Bidder, along with their Offer:

SN Feature Details

1. Escalator manufacturer

2. Escalator brand name

3. Escalator model number

4. Overall dimension

5. Sound level

6. Vibration level

7. Drive unit arrangement




SN Feature Details

8. Type of motor

9. Motor rating

10. THD of drive

11. Efficiency (Motor & Gearbox)

12. Class of insulation of motor

13. Protection class of motor

14. Gear type & material

15. Coupling type & material

16. Main drive chain’s material &breaking strength

17. Step chain/ band’s Material &breaking strength

18. Handrail drive chain/ band’sMaterial & breaking strength

19. Location of step and chain roller(outside/inside the step chain)

20. Roller diameter and width

21. Handrail guidance at newels(rollers/ newel wheel)

22.. Controller - make/ model

23. VVVF converter - make/ model

24. Truss structural material

25. Truss Galvanization thickness

26. Truss surface treatment

27. Truss construction details

28. Details of intermediate support(for rise above 5m)

29. Details of brake mechanism

30. Lubrication mechanism – Type/Model )

9.0. SAFETY DEVICES/ FEATURES REQUIRED

9.1 Operating and Safety Devices




Operating and safety devices conforming to the following requirements shallbe provided:-

9.1.1 Motor Overload & Thermal Protection Device

a) The driving motor shall be protected against excessive current due toeither overloading or short-circuiting by means of a suitable device to besubmitted for approval of the purchaser. Such protective devices shall beprovided for each phase of the motor winding. Suitable provisions shall bemade for protection against single phasing, unbalance loading and anyother abnormal condition. After the intervention of this safety device, thepower supply to the motor shall be disconnected and it shall only bepossible for a competent person to reset it back to its normal workingcondition.

b) If the detection of excessive current depends upon a temperature increasein the motor winding, such a device may be automatically reset after thefault is removed and the winding cooled down sufficiently, but shall notrestart the escalator automatically.

c) Built in type thermal protection, if offered, shall conform to BS 4999 Part72.

9.1.2 Starting switch

Spring return key operated starting switch with running directions marked onthe faceplate shall be provided at both ends of the escalator. These switchesshall be positioned to enable the operator, when using the key to start theescalator, to see the entire escalator. The key shall be removable only in theneutral position.

9.1.3 Service Stop Switch

Service switches shall be provided within the machinery spaces at both endsof the escalator. The switches shall be conspicuously and permanentlymarked and located such that switching can be accomplished without passing

or reaching over any part of the machinery. The operation of these switchesshall disconnect electrical power to the controller and the drive mechanismand shall activate the brakes. The switch shall be rated to interrupt the startingcurrent of the motor and the fuses shall be rated for the available fault currentat the switch. Inspection run shall also be prohibited.

9.1.4 Emergency Stop Switch

Recessed type, momentary pressure, emergency push button stop switcheswith extended sleeve to protect against accidental operation shall be providedon each escalator. A minimum of one switch shall be located in conspicuous

and accessible positions at the incline section or at the newel at both ends ofthe escalator. The switch provided at the incline portion shall have protectionfrom the dust ingress. The distance between the switches shall not exceed 15




m for the escalators, otherwise, additional switches shall be provided. Theoperation of these switches shall disconnect electrical power to the drivemechanism and activate the brakes(s). It shall not be possible to start thedrive mechanism by the use of these switches. Proper signage shall bedisplayed so that the location of the switch can be easily identified.

9.1.5 Speed Governor

Speed governor shall be provided which disconnects electrical power to thedrive mechanism and activates the brake, should the speed of the stepsexceed the rated speed by more than 20%.

The speed governor is not required in cases where alternating currentinduction driving motors are used, provided the slip does not exceed 10% andthe motor is directly connected to the drive mechanism.

9.1.6 Broken step chain safety device

Devices shall be incorporated as part of each tension carriage which shalldisconnect electrical power to the drive mechanism and activate the brake ifthe step chain breaks or if the tension on either chain drops below (orexceeds) a predetermined value, or if the motion of a chain is interrupted.

9.1.7 Broken drive device

Where the drive mechanism is connected to the main drive shaft by chains, adevice shall be provided which will disconnect electrical power to the drive

mechanism and shall activate both the operational brake, and the additionalbrake in the event if the driving chains fail or excess sagging.

9.1.8 Non Reversing Device

A device shall be incorporated to detect reversal from the pre-set direction ofmotion and activate the operational and auxiliary brakes to stop theescalators.

9.1.9 Handrail Finger Guard Safety Device

Detection device shall be provided at points where the handrails enter theescalator newels. These devices shall disconnect electrical power to the drivemechanism and activate the brake in the event of an object entering the gapbetween the handrail and newel.

9.1.10 Step and Skirt Safety Devices

Detection devices shall be provided in escalator skirting panels in closeproximity to the upper and lower comb plate tips, on the track system at theupper and lower curves and at 7.5 m intervals along the incline of eachescalator. Electrical power to the drive mechanism shall be disconnected and

the brake(s) applied should any one of these devices be activated due to theskirt panels being forced away from the steps.




9.1.11 Comb plate safety device

Safety devices shall be incorporated at both sides on the comb plates at eachlanding, which shall disconnect electrical power to the drive mechanism andactivate the brake should any object become wedged between the comb and

the step. The device shall be able to operate in the horizontal and verticaldirection.

9.1.12 Step Lowering Device

Devices shall be provided which will disconnect electrical power to the drivemechanism and activate the brake, should a step be lowered due toexcessive load or breakage. The detection shall be effective at the left, centreand right side of the step. The device shall be located near the top and bottomcurves for the escalators. These shall be located such that the lowered stepsstop in front of the comb in order to prevent further damage.

9.1.13 Inspection Control Inspection control complying with BS EN115 shall be provided at bothlandings.

9.1.14 Missing step detection device

Detection devices shall be provided to stop the escalator before the missingstep opening appears on the passenger side of the escalator.

9.1.15 Handrail Speed Detection Device

Each handrail shall be fitted with a device, which shall stop the escalatorwhen the handrail speed exceeds ±30% of the rated speed.

9.1.16 Broken Handrail Device

Each handrail shall be equipped with a mechanically operated electrical safetydevice of approved design to detect undue tension, excessive elongation andhandrail failure.

9.1.17 Floor plate safety device

Safety switches of approved design shall be provided underneath eachhinged floor plate at both the upper and lower landings. The escalator shallstop when the floor plate is opened unless under maintenance / inspectionmode.

9.1.18 Step up-thrust device

Safety device of approved design shall be provided at the upper and lowerlandings to stop the escalator, should a step be lifted or displaced against the

“up-thrust” track at the transition curve from incline to horizontal in thepassenger carrying side of the track system.




9.1.19 Dress Guard

Brush type deflector device shall be provided along the step nose line on theskirt panel to keep feet and loose clothing clear of the possible trapping pointand safety against garments such as Saree, loose clothes, etc. The brush

bristles shall be made of fire resistant nylon filaments with split ends to give asoft face.

9.1.20 Brake Lining Safety switch

Details of safety device shall be submitted for design review by the purchaserand same shall be provided at each shoe of the machine brake to monitor thelining thickness and to detect any abnormal or uneven wear of brake lining.

9.1.21 Phase Protection Device

A phase protection device shall be provided in the controller to prevent settingin motion or to stop the escalator in the event of phase failure or phasesequence reversal of the power supply. An illuminated visual indicator shall beprovided on the control cubicle/controller to signify the actuation of this devicedue to phase failure or phase sequence fault. The indicator shall remainilluminated until the fault is rectified.

9.1.22 Earth leakage protective device

An earth leakage protective device or residual current device shall beprovided such that any dangerous earth leakage to the escalator metalworkshall cause immediate stopping of the driving machine and disconnection ofthe power supply/ controller. The return to service shall not be possible,except if it is reset manually by a competent person.

9.1.23 Low Oil Detecting Device

A low oil detection device based on the principle of ‘oil level detection’ or ‘ oilpressure detection’ shall be provided to prevent the re-starting of the escalatorafter a predetermine time as recommended by the manufacturers but in nocase more than one week when low oil is detected. Grease shall not be used

for chain lubrication. Detailed proposal shall be submitted for review andapproval of the purchaser.

9.1.24 Interface with Fire Protection Systems

All escalator supplies will include the provision of smoke detection system inthe escalator at appropriate locations e.g. top and bottom machine rooms,controller, etc.

At stations provided with fire protection systems, if escalator would be utilizedfor evacuation purposes (in this regard, please refer NFPA130 for more

details), then the escalators should be equipped with a sprinkler system,Sprinkler heads (outlets) in the landing pits/ machine rooms and sprinklerpipes along the Truss machine rooms.. The Contractor shall provide sprinkler




pipes and heads inside truss for the Escalators and shall co-ordinate withrailways and make adequate provision to incorporate all the required fireprotection equipment and to get the sprinklers provided in the landing pits andmachine rooms connected to the main Fire Sprinkler/ Suppression system.Extension of water supply connection to the Sprinkler pipes of Escalator from

the nearest Fire Hydrant/ Sprinkler hydrant will be done by railways, for whichnecessary Interface will be the responsibility of Contractor. Unless the tenderdocument specifically asks for the aforesaid sprinkler system, it will bedeemed that the same is not required.

9.1.25 Water Flooding Detection Device

The lower pit of all escalators shall be provided with detection device, such asfloat switch, to stop the escalators if the pit is flooded.

9.2 Monitoring and Fault Diagnostic System

A microprocessor based monitoring and fault diagnostic system to provideinformation on the operation, identification and display of all faults that havecaused the escalator stop including emergency stops shall be provided. Thesystem shall be able to record at least 100 events in their order of occurrenceand display them sequentially in a last in first out sequence.

An alphanumeric display unit indicating the fault code or fault message shallbe installed at an easily accessible and protected location on the handraildecking at both the landings.

The display of the last fault can only be reset after the fault causing the stop iscleared but the historical record shall remain in the microprocessor.

Faults that do not require the attendance of the maintenance staff shall beeasily identified to enable the operator to re-set and re-start the escalator.

The system shall capture, display and retain the following information:-a) Record numberb) Fault/ status code/ alphanumeric displayc) Date

d) Time at which fault startede) Time at which fault clearedf) Direction of operation with starting timeg) Total operation hours with break down for “UP” and “DOWN”

operations.

Following is a summarized list of critical safety features. All of these will besupplied and installed by the contractor.

SN Safety devices/ featuresrequired

Description

1. Emergency stop device In an emergency, it stops escalator immediately, ifpressed





Description

2. Comb plate safety device It stops escalator, if objects are caught betweencomb plate and step treads

3. Handrail entry safetydevice

It stops escalator, if human-finger or any Foreign-object is pulled into the hand-Rail entry/Inlet

4. Phase monitoring device It stops escalator, if there is a missing phase or awrong phase sequence.

5. Over-speed detector It stops escalator, if the movement is above thenormal speed

6. Non-reversal safety device It stops escalator, if the direction of movement issuddenly reversed

7. Main driving chain safety

device

It stops escalator, if the main driving chain loosens

excessively or breaks

8. Step chain safety device It stops escalator, if the step chain breaks orbecomes excessively loose

9. Step sag protection device It stops escalator, if the Steps start sagging aftergetting fractured or otherwise

10. Static electricity preventiondevice

Eliminates static electricity created by running of theescalator steps and/or handrails

11. Skirting panel safetydevice

It stops escalator, if objects are caught between anystep and skirting Panel

12. Skirting panel safety brush(special heavy duty)

It prevents stray objects, clothes such as saree andchuuni etc. being caught between Step and SkirtingPanel

13. Step’s three-sides yellowdemarcation lines

It demarcates the two horizontal-ends and oneinner end of the steps and the safe foot-hold areafor passengers

14. Step gap greenillumination

The green light illuminates the riding edge of thesteps from below, ensuring safe ride of passengers

15. Comb plate light The lights at skirting level on both sides of the comb

plate ensure safe ride of passengers

16. Handrail broken safetydevice

It stops escalator, if handrail stops or breaks

17. Handrail speed detectiondevice

It stops escalator, if handrail movement is above/below the normal speed

18. Auxiliary brake It stops escalator, if the Driving Chain breaks and/ orescalator over-speeds

19. Motor overload & overheatProtection

It stops escalator, when the motor current /temperature is exceeded abnormally

20. Brake monitoring device It stops escalator, before a brake-fail situation canoccur (due to excess brake lining wear)





Description

21. Step missing device It stops escalator, if the Step is missing

22. “START” Buzzer device It alerts the passengers when escalator starts

working/ moving

23. “WRONG-ENTRY” alarmdevice

It alerts the passengers, if they approach to enterthe escalator from a Wrong entry-point/ opposite-direction to its movement-direction, by sounding thewarning-buzzer and beginning the escalatormovement in its pre-set, correct direction.

24. “AUTO-START” onpassenger-approach device

It ensures the stopped-escalator to start operating/moving after detecting the approaching passengersby a 3-D scan.

25. Oil-water separator &drainage system It ensures separate collection & disposal of theloose/ falling oil/ grease and accumulated water andthus preventing a potential hazard.

26 Design of earthing schemefor escalator

As per IS 3043:1987

27 Smoke Detector It stop escalator, if smoke generates under pit,machine room and controller.

28 Sprinkler System An optional item (see Cl. 9.1.24)

28 Low Oil Detecting Device See Cl. 9.1.23

29 Float switch It stops the escalator if the lower pit is flooded

30. Anti-climbing and accessrestriction devices

Wherever required, anti-climbing devices shall beprovided to discourage people from climbing on theoutsides of the balustrade. For escalators, adjacentto walls, access restriction devices may berequired.

Note: Each bidder must submit their compliance or deviations in a “ComplianceStatement”, as well as, the specific details related to their escalator-design,against each safety device/ feature mentioned above.

10.0 GENERAL REQUIREMENT

10.1 The complete escalator system shall be reliable and conform to the latestversion of the International/ EN-115 and National/ IS-4591 standards.

10.2 All materials used in manufacturing the escalator, shall be fire-retardant andnot easy to ignite.

10.3 All power devices and electro-mechanical units including the drive unit,controller, and converter etc. to be used in the escalator shall be suitable for a

heavy-duty application of a Public Service escalator as per above Standards.




10.4 All mechanically moving parts of the escalator shall be completely enclosedwithin imperforate panels or walls, except the accessible Step treads, part ofhandrail and permitted apertures for ventilation.

10.5 In case of escalator installation location being directly exposed to the weather/

extreme atmosphere, a proper roof-covering and enclosure must be provided byIndian Railways, as per the provisions of the standard EN-115 clause 0.5.2meant for this purpose.

10.6 The balustrades shall not have any parts that would tempt/ allow any personto stand on the same. The balustrades interior panels shall be smooth andshall not have any protruding part or sharp edged covering strips etc.

10.7 The balustrades design and construction shall provide for adequate mechanicalstrength and rigidity, such that the vertical force distributed over the Handrailsurface/ length shall not be able to cause any permanent deformation, breakage

or displacement of any balustrade part(s) as per the provisions of the standardEN-115 clause 5.1.5.3 meant for this purpose.

10.8 At the landings of the escalator, a sufficient unobstructed area shall beavailable to accommodate the passengers. Similarly a clear height ofminimum 2.30m or more shall be available above the Steps of the escalator atall points, as per the provisions of the standard EN-115 clause 5.2.1 meant forthis purpose.

10.9 All of the escalator’s equipment, structures and other metallic parts shall beeffectively earthed by the contractor to the incoming earthing conductor to beprovided by railways. The earthing arrangements will be as per the standard

practice conforming to IS: 3043.

11.0 ELECTROMAGNETIC COMPATIBILITY REQUIREMENTS (EMC)

The contractor shall ensure that the critical equipment supplied, i.e. VVVFconverter shall cause minimum radio frequency Interference into mainnetwork and comply with the electromagnetic compatibility (EMC)requirements of the EN-115 Standards. The Contractor should furnish anyindependent/ reputed/ national test agency/ lab’s certification in this regard.

12.0 TESTING & INSPECTION

Testing & inspection plan stages and details are as given in the table inAnnexure-2.

12.1 Escalator Type Testing

12.1.1 The Contractor shall submit a comprehensive type testing protocol thatincludes the requirements laid down in EN–115, IS–4591 and Annexure-3of this spec., to the purchaser’s representative/ testing Authority –Executive Director (EM)/ RDSO, Lucknow for approval.

12.1.2 Further, the contractor shall submit the available type test reports in respectof tests listed in the protocol; these reports should pertain to the systemsand sub-systems that are to actually form a part of escalators to be supplied




to IR. The contractor should also submit an action plan for carrying out theremaining type-tests.

.

12.1.3 If the product is being manufactured initially in a foreign country,

purchaser’s representative/ testing authority - RDSO, Lucknow at itsdiscretion, may like to visit and witness any of the Type Tests, at their owncost. The Contractor shall co-ordinate the program, in such case.

12.2 Escalator Routine Testing

12.2.1 At first, the Contractor shall submit a comprehensive routine testing protocolthat includes the tests in the nature of routine tests as are mentioned inEN–115, IS–4591, Annexure-3 of this spec. and any other relevant tests, tothe purchaser’s representative/ testing authority – Executive Director (EM)/RDSO, Lucknow, for approval.

12.2.2 Routine testing entails tests and inspections that are conducted at theworks of escalator manufacturer and/or the works of its key sub-suppliers,as per the relevant standards.

12.2.3 The purchaser’s representative/ inspection agency/ testing authority - Director(EM)/ RDSO, Lucknow would have the right at its discretion, to witnessroutine Test(s) of the complete escalator/ its Key Sub-assemblies, during theescalator’s manufacturing and/or accept the test results/ reports of theirrespective manufacturer’s/ supplier’s in-house quality control (reports shouldbe furnished for systems and sub-systems that are to actually form a part ofescalators to be supplied to IR), as sufficient evidence of the execution of

these routine tests.

12.2.4 At least 3 weeks notice shall be given to the purchaser’s representative/inspection agency/ testing authority – Executive Director (EM)/ RDSO,Lucknow, to be present for the routine testing and inspection.

12.2.5 If the Product is being manufactured initially in a foreign country,purchaser’s representative/ inspection agency/testing authority - RDSO,Lucknow at its discretion, may like to visit and witness any of the routinetests, at their own cost. The Contractor shall co-ordinate the program, insuch case.

12.3 Escalator Pre-Dispatch Verification of Packing List

12.3.1 Before the ordered goods (complete escalator system kits), as per the offereddispatch lot are dispatched, purchaser’s representative inspection agency/RDSO shall verify completeness of the dispatch lot as per order details/contractor’s packing list and if everything is in order, issue the “Dispatchapproval certificate”.

12.3.2 Thereafter the Contractor can dispatch the goods to the consignee.

13.0 ESCALATOR INSTALLATION AND FINAL ACCEPTANCE INSPECTION/TESTING




13.1 After installation, the escalator shall be tested by the Contractor in thepresence of the purchaser’s representative/ inspection agency/ testingauthority – Executive Director (EM) / RDSO, Lucknow. The tests to beconducted are listed in Annexure-3C of this spec.

After satisfactory completion of inspection/ testing, the purchaser’srepresentative/ inspection agency/ testing authority – Executive Director (EM)/RDSO, Lucknow will authorize the commissioning of the escalators for publicuse by issuing the “Escalator installation final acceptance certificate”.

14.0 WITHDRAWAL OF APPROVAL

Approval granted to the Contractor is liable to be withdrawn in the event ofnoticing any major change at a later date in the design or major change from

the Bill of material as approved earlier without seeking the Prototypeapproving authority i.e. Production Units’/ RDSO's approval or using anymajor Sub-assembly of inferior specification/ quality, thus compromising withthe reliability.

15.0 Deleted

16.0 LIGHTING

16.1 The escalator and its surrounding area shall be sufficiently and adequatelyilluminated by Railways, especially in the vicinity of the comb to ensure safeand comfort ride of passengers. Light intensity on tread surface shall beminimum 50 lux or more as per IS 4591.

16.2 Each machine pit and controller enclosure shall be provided with suitablyprotected permanent light fixtures, electrical outlets, mechanical or naturalventilation and suitable access.

16.3 The electric lighting installation and the socket outlets shall be independent ofthe power supply to the machine being fed by a separate cable from the mainswitch as per the provisions of the standard EN-115 clause 6.3.2 meant for this

purpose.

16.4 LED based emergency light having minimum 50 lux at ground surface shall beprovided by the contractor at Entrance, Exit and middle points of theescalator.

16.5 Comb lighting, pit lighting inside each machine room and step gap lightingshall also be provided by the contractor as per the provisions of EN 115. Thestep gap lighting shall be of green colour. The step gap lighting shall beprovided so that the passengers can adjust their feet on the step and it shallbe provided under the steps near the comb plate at each landing. The lighting

level of the comb light shall not be less than 50 lux at the centre of the comb.All the lightings shall be water and dust proof. The lighting systems ofescalator i.e. pit lighting, comb lighting, step gap lighting, indicator lighting and




emergency lights (entry, exit and mid point) shall be supplied through a UPSwith battery back-up. The UPS and battery will be supplied by the contractorand the system will be sized for 30 minutes backup for the lighting.

17.0 ACCESSIBILITY

17.1 The escalator design shall allow easy and safe accessibility on both sides, toauthorized persons for Inspection, maintenance and repairs.

17.2 Driving and return stations, machinery spaces inside the truss and also separatemachinery spaces, shall not be accessible to unauthorized persons. Hence,lockable Inspection and trap doors shall be provided.

18.0 Not used.

19.0 MOVEMENT OF MATERIAL

19.1 Completely assembled escalator or its sub-assemblies (which cannot behandled by hand), shall be:-

a. Equipped with fittings for being lifted/ moved by a lifting device, or

b. Designed in a way, to allow the attachment of above type fittings, e.g.,threaded holes, or

c. Designed/ shaped in a way, to allow easy attachment to the lifting deviceor transportation means.

20.0 INSTALLATION & COMMISSIONING

20.1 All works at the installation site shall be carried out in accordance with thestandard acceptable methods and practices of installation of escalators andelectrical equipment.

20.2 All equipment, sub-assemblies, structures, truss, etc. shall be installed as per theirrespective sub-contractor’s installation instructions.

20.3 Special care shall be taken of leveling/ plumbing, which shall be donemeticulously before any equipment, sub-assembly or structure is fixed finallyin position.

20.4 Adequate care shall also be taken during installation of the completeEscalator to avoid damage to any equipment, sub-assembly or buildingstructure.

20.5 Indian railways will be responsible for major civil work needed for installationand commissioning of escalator at designated platform. The Contractor shallbe responsible for providing 4 horizontal steps at top and bottom landing. The

Contractor will provide a terminal board near escalator and Railways willprovide electrical wiring and earthing upto this terminal board. Railways will




provide site assembly area with proper power connection as per the extantrules.

21.0 LABELING AND MARKING

21.1 All equipment and apparatus, inside or outside the switchboard, includinginstruments, meters and relays shall be labeled or marked adequately.

21.2 In addition, warning labels shall be fitted at all points, where the removal ofcovers/ panels may expose live equipment, operating above 50V betweencircuits or to earth and shall bear the inscription ‘Danger- Live Parts’ in red colorthat is clearly visible from a viewable distance.

22.0 PACKING, SHIPPING AND DELIVERY

22.1 All equipment shall be properly inspected before the Shipment. An inspection tag

bearing the word “INSPECTED” or “PASSED” giving details of the inspectiondate, etc. shall be attached to the Packaged Consignment. All four sides of thepackaged consignment shall contain details of the Consignee & Consignor.

22.2 Appropriate caution notices such as “Fragile” or “Handle with care” etc shallbe displayed on the out side surface of the boxes, crates and packages.

22.3 The Contractor shall be responsible for the safe transportation and delivery ofmaterials to the location, as specified by the purchaser.

23.0 ON-SITE SUPPORT TO CONTRACTOR

23.1 The purchaser/ user railways would extend their full-support and facilities onfree-of-charge basis, to the Contractor for delivering and storing the productand its installation, testing and commissioning equipment/ tools/ accessoriesetc., at a suitable location, as close as possible to the installation site.

23.2 This shall include providing a separate lockable/ secure material-storage cumSite office with telephone, electrical supply/ light and fan fittings, etc. as wellas any special assistance, required by the Contractor.

24.0 WARRANTY

24.1 The Contractor shall be responsible for any damage to equipment provided inthe escalator, due to defective design, materials, workmanship for a period of24 months from the date of commissioning of escalator and 30 months from thedate of supply, whichever is earlier. The Contractor shall attend to thecomplaint (including replacement of defective components, if required) within12 hours from the time of receipt of complaint at his own cost.

24.2 The period of warrantee will be extendable in case of recurring problems ofdefective design, material or manufacturing. The Contractor shall warrant that

everything to be furnished hereunder shall be free from all defects and faults inmaterial, workmanship and manufacture and shall be of the highest grade andconsistent with established and accepted standards of material of the type




ordered and in full conformity with specifications and drawings. TheContractor’s liability in this respect of any complaints, defects and /or claimshall be limited to furnishing and installation of replacement parts, free of anycharge. The warranty clause in commercial agreement, if any, shall prevail.

24.3 The Contractor shall be responsible for carrying out all the modifications at hiscost on any part of the equipment during the period of warranty required forsatisfactory operation of the equipment as per technical specification. For anytechnical decision the final authority from the purchaser’s side is RDSO.

24.4 All the replacements and repairs, that the purchaser shall call upon theContractor to deliver or perform under this warranty, shall be delivered andperformed by the Contractor promptly and satisfactory.

24.5 The warranty period would cover comprehensive maintenance inclusive of allspares, material and labour cost.

24.6 During warranty period, in case the escalators become non-functional due toany manufacturing defect, then the escalator would be considered underbreakdown and the Contractor would be required to rectify the defects.

24.7 The consignee shall ensure that the records of breakdown are maintained on ashift basis.

24.8 The Contractor shall ensure that in case a failure is reported by a consignee,qualified Service Engineers shall visit the site within 12 hours from the time ofcomplaint. This period of 12 hours after the failure report shall be treated asgrace period, which will not count towards breakdown time. Complaints shallbe lodged by consignee by fax, phone, e-mail or per bearer at address givenby the Contractor.

25.0 AFTER SALES SERVICE

25.1 The bidder shall indicate in the offer, the facilities available with the bidder orlocal agent for providing the required after sale service during warranty andpost warranty periods. The bidder will also mention service organizationslocated in India and the availability of trained staff and maintenance spares

etc.

25.2 The Contractor shall provide and ensure servicing facilities throughout thewarranty period of the system. After the warranty period is over, theContractor should give service support for trouble shooting and for obtainingspare parts for AMC period.

25.3 The Contractor shall ensure that, in case a consignee reports a failure,qualified service engineers visit the site within 12 hours from the time ofcomplaint. Consignee shall lodge complaints by fax, e-mail or per bearer ataddress given by the Contractor. The responsibility to keep the failure

reporting address details current will rest with the consignee.

26.0 MAINTENANCE




26.1 The Contractor shall provide free-of-charge, maintenance service (and all theworks specified) including required spares, for the specified warranty period.

26.2 During the guarantee period, the above maintenance service shall include all

preventive, scheduled and corrective maintenance and additionally, allservice-request calls made by the purchaser/ user railways.

26.3 For this, the Contractor would be required to provide a comprehensivemaintenance and service plan, for review and acceptance by the purchaser orhis authorized representative.

26.4 The maintenance work-system shall ensure safety of the personnel andequipment.

26.5 In the event of any failure, requiring design modifications, etc. in the escalator,

the Contractor shall undertake to submit its details for a review by thePurchaser or its authorized representative. On reaching consensus and post-modification, the Contractor shall undertake fresh testing and re-commissioning, if required.

26.6 It shall be possible to change the Steps without dismantling the InternalPanels or the Skirt of the escalator, to ensure minimum down time duringmaintenance and repairs of the escalator.

26.7 Annual Maintenance Contract (AMC)

26.7.1 The bidder are required to quote separately for a comprehensive annualmaintenance contract (AMC) for the escalator supplied against thespecification, which will be inclusive of all spares, material and labour costsalong with work schedule if required to do so as per special condition of thetender documents.

26.7.2 The contractor shall be responsible to keep all the escalators along with allconnected ancillary equipments/apparatus/ machines, as have been statedunder the scope of work and specification, in perfect working condition, onany day during the tenure of the contract (excepting the period of

programmed shut down). In case, any escalator is out of order, for failure/breakdown of the escalator or of any other related/ancillaryequipments/apparatus/machines, the escalator shall be attendedimmediately, with in a period of 12 hours of being informed.

26.7.3 The consignees must communicate their option to enter into AMC at least 30days prior to expiry of warranty. The AMC agreement must be signed withinsix months prior from the date of expiry of warranty.

27.0 TRAINING PROGRAM




The Contractor shall design a training program on the correct operations andbasic maintenance procedures of the escalator, for the purchaser’sauthorized/ designated personnel.

The training program shall be conducted at a convenient time and place, and

shall touch all the relevant areas.

The Operators and Maintenance training program shall be of 10 man-days, inbatches of 5 personnel at Railway stations of the concerned Zonal Railways,where the escalators have to be installed by the Contractor.

27.1 Operators Training

The Contractor shall provide the necessary Operators Training to thePurchaser’s authorized/ designated Staff as per the formal Training Programdesigned for this purpose. This shall enable them to carry out the normal/

rescue operations under normal/ emergency situations respectively as well asminor repairs by themselves.

27.2 Maintenance Training

The Contractor shall provide the necessary maintenance training to thepurchaser’s authorized/ designated Staff as per the formal Training programdesigned for this purpose. This shall enable them to perform minor and non-specialized maintenance of the escalators.

28.0 OPERATION AND MAINTENANCE MANUALS

28.1 The Contractor shall provide operations and maintenance manuals, for theuse by the supervisory, operating and technical staffs of the purchaser.

28.2 Each manual shall be divided into indexed sections explaining the subjectmatter in logical steps.

28.3 The operations manual shall contain the principle and operations’ details ofthe complete escalator; under the normal and emergency conditions.

28.4 Details of the common faults that might occur in the complete escalator &/orany of its key components/ sub-assemblies and their rectification shall also beincluded.

28.5 The maintenance manual shall contain the maintenance and servicinginstructions for the complete escalators along with explanatory notes anddrawings as necessary.

28.6 The periodic maintenance schedule recommended by the Contractor for thesatisfactory performance of the escalators shall also be included.

28.7 Escalator being a critical public safety item, a draft of operations andmaintenance manual should be submitted to the purchaser for approval withregard to its completeness and comprehensiveness. The final version of




operations and maintenance manual should be issued on the basis ofpurchaser’s comments.

28.8 It is recommended that the operation and maintenance manuals be shippedalong with the escalator shipment. In any case, Operation and Maintenance

manuals are to be supplied to railways well before final testing/commissioning of escalators.

29.0 QUALITY ASSURANCE

29.1 The Bidder shall prepare and furnish their QA plan documentation, as pertheir ISO: 9000 program being followed. It shall include and clearly mentionthe procedures ensuring that all equipment/ materials/ systems & sub-systems are properly specified, designed, purchased, recorded, inspected,installed and tested at appropriate stages.

29.2 It shall also provide the confirmation that the handling, storage & deliveryarrangements have been satisfactory.

30.0 ACCESSORIES

Each escalator shall be supplied with the following accessories:

(a) 2 nos. PVC maintenance barriers, one each for upper and lower landing,will be required when an escalator is taken out of service formaintenance/inspection; this will save the public from falling into the pitand the escalator. The barrier shall be of minimum height 900mm. The

barrier should be with a stand/ footrest. transportation. (b) Two sets of starting keys per escalator.

(c) One hand-winding tool per escalator (if not already included as part ofescalator).

(d) One set of hand lamp per escalator.

(e) One set of inspection boxes (with cable) per escalator.

(f) One set of floor plate opening tools per escalator.

(g) Three box vaccum handle for inner panel opening/removal per escalator.

(h) Two sets of keys for controllers per escalator.

**********




ANNEXURE-1

Name of the Railway Station: …………………………………

S. No. Description Parameter Remarks

1. Escalator required at Entry/ Exit of Station Yes/No If Yes; OneSide/ BothSides

2. Escalator required at Platform(s) Yes/No If Yes; PlatformNumber…….

3. Height of foot over Bridge (At passengerwalking-level, from base)

In meters

4. Horizontal spaces available for escalatorsinstallation

5. Is sprinkler system required? Yes/No

6. Will the escalator be installed at anunderground station?

Yes/No

(Note: For each Escalator, this performa shall be filled in)



Page38 of 46 Effective from June-2012 SpecifiRDSO/PE/SPEC/TL/ D

Detailed Testing & Inspection Plan

Type ofInspection/Testing

Where Frequency When On What Who Con

Type Testing Relevantmanufacturer/supplier’sworksThird party

Once inevery 5years

Latest beforeCommissioning of thefirst Escalator

Completeescalator & its KeySub-assemblies.

Internatiotesting Ag(approachcontractortesting auRDSO macopies of certificateTests.Testing A

RDSO mapresent hany test, adiscretion

Routine testing Relevantmanufacturer/supplier’sworks

Each order/eachescalator

During manufacturing Completeescalator/ its KeySub-assemblies.

Relevant their In-hoHoweverED (EM), accept cethe aboveReports, a

evidence of the Rouchoose tohimself toat its own



Page39 of 46 Effective from June-2012 SpecifiRDSO/PE/SPEC/TL/ D

Type ofInspection/Testing

Where Frequency When On What Who Con

Pre-dispatchverification ofpacking list

EscalatorContractors’works

Offereddispatch Lot

Before dispatch of thecomplete escalator toinstallation Site

Completeescalator Kit.

Purchasetesting ag

Finalacceptanceinspection/testing

At theinstallation site

Each order/eachescalator

After installation &commissioning of thecomplete escalator &after all the abovementioned Tests aresatisfactorily completed

Completeescalator.

Contractopurchasertesting auRDSO.



Page40 of 46 Effective from June 2012 Specification no.RDSO/PE/SPEC/TL/ D/0095-2012 (Rev ‘1’)

Annexure-3A- Type Test details

All tests, measurements, calculations and inspections mentioned in Table 7 of EN115 will be essential.. The purchaser shall generally witness the following set oftype tests for the purpose of safety verification (the list of tests can be enlarged, if

required).

S.No.

Key Sub-Assy./ Part ofEscalator

Frequency Scope of Test

1. Driving motor 1 unit -- Insulation test-- Dynamic test-- Total harmonic distortion test

2. Steps 1 unit -- Static test-- Dynamic test

-- Torsional test-- Dimensional check

3. Step Chain 1 unit -- Dimensional check-- Tensile breaking strength (Destructive

test)

4. Wheels(a) Chain wheel(b) Trailer wheel

1 unit -- Dimensional check-- Location of chain roller

5. Controller 1 unit -- Physical construction check

-- Electrical tests, such as;• Functional test

• Protection circuit verification

• Temperature rise test

6. Drive chain 1 unit -- Breaking strength (Destructive test)-- Dimensional check

7. Handrail 1 unit -- Physical checking-- Breaking strength of the handrail and

factory prepared Joints-- Breaking strength of handrail drive

chain-- Dimensional check of handrail drive

chain-- Ozone ageing test

8. Braking system 1 unit -- Full functionality test & Brakingdistance

-- Dimensional check-- Demonstration of brake adjustment

and settings




S.No.



9. Truss 1 unit -- Dimensional check-- FEM analysis for truss fitness for upto

5m w/o intermediate support-- Truss Deflection to be recorded under

full-load condition.

10. .Track 1 unit -- Joint of guide track.-- Thickness of zinc profile.

11 Skirt 1 unit -- Skirt yield test-- dimensional check of skirt panel

12 Balustrade 1 unit -- Deformation test of balustrade-- Thickness of steel panel-- Dimensional check of balustrade

panel

13 Test on fully assembledescalator

1 unit -- All tests as per EN-115-- Noise Level of the complete escalator

( 65 dBA).-- Vibration of escalator (10mm/sec)




Annexure-3; contd…B- Routine Test details

Following is an indicative list of some of the tests that shall be included in theroutine test protocol. The final comprehensive list.will be supplied by RDSO afterconsultation with the manufacturer.

S.No.



1. Driving mechanism 100% -- Dimensional check-- Backlash in both directions

2. Driving motor 100% -- Insulation resistance of winding-- High voltage test (2kV for 1 min.) on the

stator winding.

3. Main drive shaft 100% -- Dimensional check

100% -- Radiographic testing or other Non-destructive test of weld joints

4. Steps 100% -- Dimensional & aesthetics checks

5. Step chain 100% -- Overall dimensional check ofassembledchain

100% -- Dimensional checks of link plate, chain pinand step axles.

6. Wheels(a) Chain wheel

(b) Trailer wheel

100% -- Visual & dimensional checks of wheels &bearings.

7. Controller 100% -- Checking/ testing for correct wiring &functioning.

8. Tension carriage 100% -- Visual & dimensional checks

9. Drive chain 100% -- Visual & dimensional checks

10. Handrail, handrail drive etc. 100% -- Visual & dimensional checks

11. Comb plate 100% -- Dimensional & aesthetics checks

12. Floor plates 100% -- Dimensional & aesthetics checks

13. Braking system 100% -- Dimensional check-- Check Brake setting & adjustment.

14. Truss 100%40%

-- Visual & dimensional checks-- Radiographic examination of welds

15 Test on fully assembledescalator

1 unit -- All tests as per EN-115-- Noise Level of the complete escalator (

65 dBA).-- Vibration of escalator (10mm/sec)




C- Final Acceptance Inspection/ Test details

S.No.

Escalator’s Parameter/Feature To Be Inspected/Tested

Scope of Test

1. Inspection of escalator’sgeneral arrangement &specifications

a. Vertical rise

b. Horizontal span length

c. Angle of Inclination

d. Step width

e. No. of Horizontal steps at upper & lower landings

f. Balustrade height

g. Transition radii

h. Correct size of truss members

i. Truss surface treatment

j. Rated speed

2. Inspection/ testing ofescalator’s operation

a. Key operated start function

b. Traffic direction Light

c. Direction of Movement

d. “AUTO-START” on passenger-approach

e. Crawling speed/ auto-stoppage in the absence of

passengers

f. Automatic lubrication system

3. Inspection/ testing ofElectrical items

a. Correctness of motor rating

b. Verification of actual installation vis-à-vis the powersystem diagram provided by the contractor

c. Contactors, relay contactors and safety switches areof approved make/ complying to EN 115.

d. Cross-sectional area of the conductors of safety

circuits complying to EN 115.e. Insulation resistance between conductors and

between conductors and earth

3. Testing of escalator’s safetydevices

a. Emergency stop device

b. Comb plate safety device

c. Handrail entry safety device

d. Phase monitoring device

e. Over-speed detector

f. Non-reversal safety device

g. Main driving chain safety device




S.No.

Escalator’s Parameter/Feature To Be Inspected/Tested

Scope of Test

h. Step chain safety device

i. Step sag protection device

j. Static electricity prevention device

k. Skirting panel safety device

l. Skirting panel safety brush

m. Step’s two-sides yellow demarcation lines

n. Step gap green illumination

o. Comb plate light

p. Handrail broken safety device

q. Handrail Speed detection devicer. Auxiliary brake

s. Motor overload & overheat protection

t. Brake monitoring device

u. Step missing device

v. “START” buzzer device

w. Step anti-jumping device

x. “WRONG-ENTRY” alarm device

y. Oil-water separator & drainage system

4. Final testing of escalator’scritical parameters

a. Load test

b. Braking distance test

c. Sound-level test.

d. Vibration level test

e. 12 hours continuous-run, in both directions

5. Final visual inspection of

installed escalator

a. Check satisfactory workmanship

b. Check paintings & surface treatments

c. Check labeling & marking

d. Check neatness of laid-out wiring

6 Provision of safety signs a. Visual checking of signs

Note: EN 115 prescribes several tests and measurement and visual inspection in respectof an assembled escalator. These shall automatically form a part of the finalacceptance test protocol.




DEFINITIONS

The following words and phrases used in this specification shall bear the meanings givenbelow:-

Part I – Technical Terms

a) Angle of Inclination - The angle at which a passenger travels with respect to thehorizontal.

b) Anti slide device – A device to be installed on the decking between the handrailsof the adjacent escalators, or on the decking between the handrail and the adjacentwall, to prevent people or objects from sliding down on the decking.

c) Balustrade - The enclosure at each side of the moving steps, consisting ofdecking, inner and outer panels and skirts.

d) Ceiling intersection guard – A guard provided at the intersection of escalatordecking and ceiling or soffit.

e) Comb – The pronged portion of the comb plate at the landing which meshes withthe step tread grooves.

f) Comb plate – The plate supporting the combs at the landings.

g) Control equipment – the components by means of which motion, direction oftravel, speed and stopping are controlled.

h) Deck, decking and decking extension – The position of the balustrade outsidethe moving handrail that is transversely horizontal. This shall include anti slidedevices where applicable.

i) Driving Machinery – The motorized power unit for driving the escalator.

j) Electro-mechanical Brake – A brake consisting of friction shoe(s) applied to abrake drum or disc by means of springs that are electrically released.

k) Handrail – A power driven moving rail for passengers to grip whilst using theescalator.

l) Handrail Guard – A guard for the moving handrail at the point where the handrailenters or leaves the balustrade.

m) Landing – The stationary areas at the entrance to or exit from an escalator.

n) Landing Plate / Floor Plate – The portion of floor plate next to the comb plate atthe landing.

o) Newel – The portion of the balustrade on the landing at the end where the movinghandrail changes direction.




p) Number of Horizontal/ Flat steps – Horizontal/ Flat steps shall be measured fromthe point at which the first step emerges from under the comb plate in a horizontaldirection to the first exposure of the riser of an adjacent step, both at the upper andlower landings.

q) Panel – The portion of the balustrade immediately adjacent to the moving stairway,

occupying the vertical space between the steps and the deck or inner panel.

r) Skirt – The portion of the balustrade immediately adjacent to the moving stairway,occupying the vertical space between the steps and the deck or inner panel.

s) Step – The unit which forms the moving stairway.

t) Step chain – The main chain to which the steps are attached.

u) Step roller track – The track on which the step roller runs.

v) Step Tread – The horizontal portion of the step grooved in the direction of traveland on which the passengers are carried.

w) Step roller – The rollers attached to the step and supporting the step.

x) Truss – The supporting structure on which the various components are mounted.

y) Working point – The intersection of the escalator step nose line and the projectionof the escalator floor plate level.

z) Constant length – The horizontal distance between the escalator working point

and the end of escalator support.

Part II – Other Terms

a) Purchaser – The President of the Republic of India or the administrative officers ofthe railway on his behalf.

b) Bidder – The person/firm who submits duly filled in tender documents as an offer tocarry out the work specified in tender document. The bidder can bemanufacturer(singleentity)/ consortium/joint venture (one of the consortium/jointventure member could be an Indian firm or the Indian subsidiary of manufacturer forthe purpose of thistender).

c) Contractor – The bidder whose tender has been accepted by the railway shall betermed as the contractor.

d) Sub-Contractor – A person/ firm who has entered into a contract with thecontractor for supplying materials and/or services.

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Documents

India Escalator specifications 2012