Dgms Circular

8/10/2019 Dgms Circular

1/12

IS 20474-14

Doc :MED 07(1209)

For Comments Only

DraftIndian Standard

EARTH-MOVING MACHINERY SAFETY

PART 14 INFORMATION ON INDIAN PROVISIONS

ICS 53.100

_________________________________________________________________________________

Not to be reproduced without the permission of Last date for receipt of

BIS or used as a STANDARD comments is: 31 December 2012___________________________________________________________________________

NATIONAL FOREWORD

(Adoption clause to be added later on).

This specification is complementary to the other parts of IS/ISO 20474. Directorate General of MinesSafety, DGMS, is the Indian Government Regulatory agency for safety in mines and oil-fields. Heavy

Earth Moving Machinery used in the mining sector is covered under DGMS rules and regulation. This

standard has been prepared in consultation and in agreement with DGMS.

While implementing this standard, compliance with statutory regulations shall be ensured.

Earth- Moving Machinery Safety is covered under 20474. This standard has 14 parts, the other

parts in the series are:

IS/ISO 20474-1:2008 Earth-moving machinery -- Safety -- Part 1: General requirements

IS/ISO 20474-2:2008 Earth-moving machinery -- Safety -- Part 2: Requirements for

tractor-dozersIS/ISO 20474-3:2008 Earth-moving machinery -- Safety -- Part 3: Requirements for loaders


backhoe-loaders


hydraulic excavators


dumpers http://www.iso.org/iso/


scrapers


graders

IS/ISO 20474-9:2008 Earth-moving machinery -- Safety -- Part 9: Requirements for pipelayers


trenchers

IS/ISO 20474-11:2008 Earth-moving machinery -- Safety -- Part 11: Requirements for earth

and landfill compactors

IS/ISO 20474-12:2008 Earth-moving machinery -- Safety -- Part 12: Requirements for cable

excavators


rollers


2/12

IS 20474-14

Doc :MED 07(1209)

2

1 Scope

This standard covers exceptions and requirements additional to the safety requirements for

earth-moving machinery given in other part of IS/ISO 20474, in conjunction with which it is

intended to be used. These provisions are specific to India and relate to laws, directives or

regulations in force in the country.

Note : At present it covers India's specific requirements of IS/ISO 20474 Part 1 to Part 6

only. The requirements for Part 7 To Part 13 of IS/ISO 20474 will be added later.

2. References-

The Indian Standards listed in Annex A are necessary adjuncts to this standard. At the time

of publication, the editions indicated were valid. All standards are subject to revisions and

parties to agreements based on this standard are encouraged to investigate the possibiltity of

applying the most recent editions of the standards indicated in Annex A.

3. India provisions related to IS/ISO 20474-1 General see Table 1

Table 1 Exceptions and requirements additional to IS/ISO 20474-1

specific to India

Sub-clause of

IS/ISO 20474-1Indian provision(s) to be included in this standard

4.3.1.1 Replace the first paragraph with the following:

Machines shall have a canopy or cab would be an optional requirement.

4.3.1.5 Provision shall be made to store the operators manual on the machine e.g. storage pocket,compartment in the toolbox.

4.3.2.5 The minimum space envelope height R1 as defined in figure 5 of IS/ISO 3411 and measured

from the seat Index Point (SIP) as defined in IS 11113 shall meet the values given below

Space envelope height related to machine classification

Machine classification Minimum space envelope height

mm from the SIP

Compact machines 920

All other machines 1000

The minimum dimensions given above are also required for machines having a front or rear

window which are located (in an opened position above the operators seat.

4.3.2.6 If a heating system is fitted it shall either:

a) comply with ISO 10263-4 or

b) have the capability of increasing the temperature of the air inside the cab and maintain a

temperature of + 18oC at expected ambient temperature the machine is intended for. The

minimum capacity of the heating system shall have a T of 25oC (T of 25 K) within 30

min. The test shall run starting with the engine at working temperature as specified by the

manufacturer. Measurement of the system capacity shall be made at three points. The threepoints shall be located in a vertical plane through the SIP and parallel to the longitudinal axis

of the machine as follows:


3/12

IS 20474-14

Doc :MED 07(1209)

1) at filament position centre-point as defined in IS/ISO 5006;

2) at the SIP as defined in IS 11113;

3) 100 mm above floor plate and 600 mm in front of SIP.

The ventilation system shall be capable of providing the cab with filtered fresh air at a

minimum 43 m/h. The filter shall be tested according to ISO 10263-2.

NOTE The filter element selection depends on the intended operating environment

conditions.

4.3.2.9 Replace the second paragraph as follows:Windows shall be made of safety glass complying with requirements of IS 2553 (Part 2).

Add the following

Front window(s) shall be fitted with motorized windscreen wiper(s) and may be fitted with a

washer

4.4.1.3 Delete the following

"For the seats of compact machines, the following applies:

a) either the fore and aft adjustment (see ISO 11112:1995, Table 1, l2) shall be at least 35

mm or the corresponding adjustment of frequently used operator controls shall be provided;

b) vertical adjustment (ISO 11112:1995, Table 1, h1) is not required."

4.4.1.4 If operators effect seat fitted with a suspension system it shall be tested in accordance with

ISO 7096 to minimize the vibration to the operator

As per ISO 2631-1, below is the frequency level for human comfort zone as test procedure.

ISO 2631-1 is also covered under ISO 7096.

- 0.5 Hz to 80 Hz for health, comfort and perception, and

- 0.l Hz to 0,5 Hz for motion sickness.

NOTE: ISO 7096 also covers ISO 10326-1 and ISO 2631-1 requirement as reference.

4.5.1 Delete the following:

"g) for the safety -related functions of control system(s) having no electric components, theprinciples outlined in ISO 13849-1 are followed, or methods giving similar protection are

applied."

4.5.2 Add the following

Starter shall be shielded according to SAEJ 1493 to prevent hazard of bypass starting ofmachine and shall has neutral start protection.

4.7(a) Braking Systems Add the following

Construction Equipment Vehicles falling under the purview of CMVR, shall additionally

meet the requirements specified under CMVR (96A)

4.8.1Operators Field of View add the following

Rear View Mirrors fitted on Construction Equipment Vehicles falling under the preview of

CMVR, shall additionally meet the requirements specified under CMVR

4.8.2 Lighting, signaling and marking lights, and reflex-reflector devices Add the following

For earth-moving machinery falling under the preview of CMVR, Signaling devices,

lighting, marking lights and reflex-reflector devices shall comply with CMVR Rule 102,

103, 104, 105,106,107,108,109,111 and 124

Machines shall be fitted with lights to enable operations in darkness.

Work lights and reflex-reflector devices shall comply with ISO 12509. Lighting, signaling

and marking lights, if provided, shall comply with the appropriate clauses of ISO 12509.


4/12

IS 20474-14

Doc :MED 07(1209)

4

4.9 Warning devices and safety signs

The earth-moving machinery shall be equipped with

a) an audible warning device (horn) controlled from the operator's station and tested to

compliance with ISO 9533

b) Reverse Audio Visual Alarm shall comply with IS 13947

c) Electric Horns shall comply with IS 1884

d) Safety signs and hazard pictorials in accordance with IS/ ISO 9244.

4.11 Earth-moving machinery with working equipment and/or attachment and optional equipmentshould be designed and constructed so that stability is provided under all intended operatingconditions, as specified by the manufacturer in the operation manual.

Devices intended to increase the stability of earth-moving machinery in working mode (e.g.outriggers, oscillating axle locking) shall be fitted with interlocking devices, e.g. check valvewhich keeps them in position in case of hose failure or in case of oil leakage.

4.13.1 Add the following:

For earth moving machinery sound pressure level at 15 m from the source shall not exceed

85 dBA. For operator shall not exceed 80dBA.

Each Earth Moving Machinery shall affix labels specifying Exterior & Operator Levels

noise limit.

4.15.6 Stabilizers, outriggers or other moveable devices that can move (e.g. due to drift or internalleakage) outside of the lateral projection of the machine during transportation or travellingshall be secured in their transport position.

Instructions for secure locking shall be provided in the operator's manual.

4.16 Earth-moving machines shall comply with EMC requirements as specified in ISO/DIS

13766-1.

4.17.1 Delete the following:

Safety-related machine control systems using electronic components shall comply with ISO

15998 or other standards providing equivalent integrity.

4.21 As per ISO/DIS13031

4.22.4 The engine compartment shall be guarded against unauthorized access such as:

a) a locking device;b) an installation that requires the use of a tool or key;c) a guard latch control inside a lockable compartment (e.g. cab).

For Dumpers and Dozers refer to specific parts of IS/ISO 20474

6.3 Machine marking Add the following

e) As per Rule 122 of CMVR for all machines that fall under the purview of CMVR


5/12

IS 20474-14

Doc :MED 07(1209)

4.India provisions related to IS/ISO 20474-2 Tractor-drozers see Table 2


specific to India

5. India provisions related to IS/ISO 20474-3 Loaders see Table 3


specific to India

Sub-clause of


4.4 Replace existing with the following

Clause 4.3.2.9 of IS/ISO 20474-1:2008 shall apply. Machine shall be fitted with amotorized wiper(s) for the rear window(s). No motorized wiper(s) are required for

skid-steer loaders and loaders with a cab width 750 mm, measured outside of the cab

to the height of the SIP (seat index point).

4.5.2 Clause 4.3.4 of IS/ISO 20474 -1 shall apply


Clause 4.4.1.5 of IS/ISO 20474-1 applies with the exception that the safety bar, see

4.5.4 can be used as a restraint system provided that the test criteria of ISO 6683 aremet.

4.6.1Clause 4.11 of IS/ISO 20474-1 shall apply with the additions given in 4.6.2 to 4.6.7

below.

All rated capacities as defined hereafter are based on tests and/or calculations of

machines being on level and firm supporting surface.

Boom lowering control device as defined in ISO 8643 is not applicable for loaders

4.6.2 The rated operating capacity shall be determined according to ISO 14397-1.

The volumetric rating of bucket shall be determined according to IS 12206.

NOTE - The mass, volumetric rating of bucket and density of the material have to be

taken into account when the bucket capacity is selected for a specificapplication.

4.6.3 If feature is provided by manufacturer, this clause shall apply

Sub-clause of

IS/ISO 20474-2 Indian provision(s) to be included in this standard

4.1 Delete the following

"Suspension seats are not required.

If suspension seats are provided as an option, for mandatory national and regional

provisions, see ISO/TS 20474-14".

4.2 Operator Seat Add the following

Suspension seats are not required.

4.3 If cab is provided, Clauses 4.3.2.7 and 4.3.2.9 of ISO 20474-1 apply for window(s)

with the following provisions:

a) Arrangement to defrosting the window(s) may be made


6/12

IS 20474-14

Doc :MED 07(1209)

6




4.6.7 Delete this clause

6 Replace the fork application according to 4.6.3 by

-The fork application(if feature is provided by manufacturer) according to 4.6.3

6. India provisions related to IS/ ISO 20474- 4 Backhole -loaders see Table 4


specific to India

Sub clause ofIS/ISO 20474-4

Indian provision(s) to be included in this standard

4.1 Backhoe loaders shall comply with the safety requirements and/or protectivemeasures of IS/ISO 20474-1 in as far as those are not modified by the specificrequirements of this standard

4.2.2 Clause 4.3.4 of IS/ISO 20474 -1 shall apply

4.3.2 Clause 4.5.1 of IS/ISO 20474-1 shall apply

4.4 4.9 of ISO 20474-1 shall apply with the addition that the sound level shall alsobe greater than or equal to 93 db (A) at 7 m distance from backhoe swingcentre to the rear. In addition, the operator shall be able to activate the warningdevice from the backhoe operation position.

4.5.2.3 If feature is provided by manufacturer, this clause shall apply



4.5.2.6 Delete this clause

4.5.3.2 The rated lift capacity for a backhoe loader used in backhoe application with abucket or shovel shall be determined in accordance with Annex B as the valueaccording to B 6.

The volumetric rating of the bucket shall be determined according to IS/ISO7451 or IS12206

Note The mass, the volumetric rating of the bucket and the density of the material have to be takeninto account when a bucket is selected for a specific application.

7. India provisions related to IS/ISO 20474-5 Hydraulic excavators see Table 5


specific to IndiaSub clause of


4.1

Excavators shall comply with the safety requirements and/or protective measures of

IS/ISO 20474-1 in as far as those are not modified by the specific requirements ofthis standard


7/12

IS 20474-14

Doc :MED 07(1209)

4.3.3 The excavator seat shall be equipped with an operator restraint system that meetsthe requirements specified in ISO 6683.

4.3.3.2 Seat with suspension system shall be provided except for Compact Excavators

4.3.4 clause 4.3.2.9 of ISO 20474-1 shall apply

4.5 Add the following

A swing brake shall be provided to decelerate the rotation of the upper structureand to bring it to a stop in any position. The swing brake may be an integrated partof the swing control system (ex using the torque provided by the hydraulic motor) orby means of specific system or device (ex a frictional brake electrically, hydrostaticor other hydraulically operating brake)


Hot and Cold zone shall be separated by Baffle plate.

Vent valve(breather) shall be provided

4.6.4.5 Delete the clause

4.6.5 Add the following clause

Battery isolation switch shall be provided as per Clause 4.17.6 of ISO20474-1

8. India provisions related to ISO 20474 - 6 Dumpers see Table 6

Table 6 Amendments, exceptions and requirements additional to IS/ISO 20474-6

specific to India

Sub clause ofIS/ISO 20474-6

Indian provision(s) to be included in this standard

4.1 Dumpers shall comply with the safety requirements and/or protective measures ofISO 20474-1 in as far as those are not modified by the specific requirements of thisclause or ISO 20474-14.

4.2.2 In case of loss of energy, lowering the body to the transport position frame shall bepossible in a safe way without special tools, e.g. by a manually operated valve.

4.8 A device shall be provided to lock the Steering in a rigid position during servicemaintenance and other non-operational purposes to ensure that the tyres do notmove inadvertently.

The device shall withstand a force of 1.2 times the maximum steer input force thatcan be generated.


8/12

IS 20474-14

Doc :MED 07(1209)

8

ANNEX A

(Item 2)

LIST OF REFERRED STANDARDS

IS NO TITLE

IS 1884:1993 Automotive vehicles - Electric horns

IS 2553 (Part 2):1992 Safety Glass - Part 2 : For Road Transport

ISO 3411:2007 Earth-moving machinery -- Physical dimensions of operators

and minimum operator space envelope

IS/ISO 5006:2006 Earth-Moving Machinery Operators Field of View Test

Method and Performance Criteria

IS/ISO 7451 :2007 Earth -Moving Machinery - Volumetric Rating for Hoe - Type

and Grab - Type Buckets of Hydraulic Excavators and Backhoe

Loaders

IS/ ISO 9244:2008 Earth-Moving Machinery - Machine Safety Labels - General

principles

IS 11113:1999 Earth-Moving Machinery, and Tractors and Machinery for

Agriculture and Forestry - Seat Index Point

IS 12206:1993 Earth-moving machinery - Loader and front loading excavator

buckets - Volumetric ratings

IS 13947;1993 Low-voltage Switchgear and Controlgear

ISO 2631-1 1997 Mechanical vibration and shock -- Evaluation of human

exposure to whole-body vibration -- Part 1: General

requirements

ISO 6683:2005 Earth-moving machinery -- Seat belts and seat belt anchorages

-Performance requirements and testsISO 7096:2000 Earth-moving machinery -- Laboratory evaluation of operator

seat vibration

ISO 8643:1997 Earth-moving machinery -- Hydraulic excavator and backhoe

loader boom-lowering control device -- Requirements and tests

ISO 9248:1992 Earth-moving machinery -- Units for dimensions, performance

and capacities, and their measurement accuracies

ISO 9533:2010 Earth-moving machinery -- Machine-mounted audible travel

alarms and forward horns -- Test methods and performance

criteria

ISO 10263-2:2009 Earth-moving machinery -- Operator enclosure environment --

Part 2: Air filter element test methodISO 10263-4 :2009 Earth-moving machinery -- Operator enclosure environment --

Part 4: Heating, ventilating and air conditioning (HVAC) test

method and performance

ISO 10326-1 :1992 Mechanical vibration -- Laboratory method for evaluating

vehicle seat vibration -- Part 1: Basic requirements

ISO 11112:1995 Earth-moving machinery -- Operator's seat -- Dimensions and

requirements

ISO 12509:2004 Earth-moving machinery -- Lighting, signalling and marking

lights, and reflex-reflector devices

ISO/DIS 13031 Earth moving machineryQuick Coupler-Safty

ISO/DIS 13766-1:2006 Earth moving machinery-Electromagnetic Compatibility


9/12

IS 20474-14

Doc :MED 07(1209)

ISO 13849-1:2006 Safety of machinery -- Safety-related parts of control systems --

Part 1: General principles for design

ISO 15998:2008 Earth-moving machinery -- Machine-control systems (MCS)

using electronic components -- Performance criteria and tests

for functional safety

SAE J 1493-2008 Guarding of Starter System EnergizationIS/ISO 13849-1:2006 Safety of machinery -- Safety-related parts of control systems --

Part 1: General principles for design

IS/ISO 20474-1:2008 Earth-moving machinery -- Safety -- Part 1: General

requirements


tractor-dozers


loaders


backhoe-loaders

IS/ISO 20474-5:2008 Earth-moving machinery -- Safety -- Part 5: Requirements forhydraulic excavators


dumpers


10/12

IS 20474-14

Doc :MED 07(1209)

10

ANNEX B (Related to ISO 20474-4)

(Item 4)

Test method for backhoe loader lift capacity at the backhoe portion

NOTE: This annex specifies a test method for determining the backhoe loader capacity when used in backhoe

application.

B.1 Terms and definitions

B 1.1

Anchorage point

Vertical point below the lifting device where the load force is applied or transposed.

B 1.2

Hydraulic holding circuit pressure

Maximum static pressure in a specific circuit, limited by relief valve at a flow no greater than 10% of rated

circuit flow.

B 1.3

tipping load

Static load at the balance point

B 1.4

Hydraulic lift capacity

Maximum load that can be lifted at the bucket hinge pin with any hydraulic circuit activated, limited by theworking circuit hydraulic pressure.

B 1.5

lift point radius

horizontal distance between the bucket hinge pin and the swing pivot centre.

B 1.6

Balance point

Point at which the moment acting to overturn the machine with a specific load and lift point radius is equal to

the moment of the machine available to resist overturning.

B 1.7Overturning moment

Moment when the balance point is reached

B 1.8

Test force

Force applied to the load cell either by test weight or by applying hydraulic means.

B 2 Apparatus

The apparatus shall comprise the following and with tolerances as specified in ISO 9248;

- Load cell or force transducer appropriate to the magnitude of the load to be measured;

- Wire ropes and shackles, pulley, safety chains and adjustable anchor point (e.g. slide rail);

- Pressure gauge:

- Means for measuring linear dimensions.


11/12

IS 20474-14

Doc :MED 07(1209)

B .3 Test site

The test site shall consist of a substantially level (2% inclination), hard surface, preferably concrete, with

anchor point and sufficient space for the load cell.

B 4 Preparation for test

B 4.1 General

The machine shall be clean and equipped according to the manufacturers specifications.

The machine shall be equipped with an attachment bracket if applicable (but no attachment). The machine shall

have the tyre inflation and tyre ballast as specified by the manufacturer. The fuel tank shall be filled to 50%

capacity.

Prior to testing, the engine and hydraulic system shall be at the normal working temperature, and the hydraulic

system pressure(s) shall than be checked for compliance with the manufacturers recommended hydraulic

pressure setting(s)

B 4.2 Position

The machine shall be positioned on the test site as follows:

a) In the least stable position (e.g. fully side-shifted and /or fully articulated);

b) The oscillation of the articulated steering joint (if any) shall be locked;

c) If the arm can be articulated horizontally, it shall be in the straight position;

d) Stabilization devices shall be engaged according to the manufacturers specifications.

Outriggers and loader bucket shall be in a position so that the wheels just clear off ground.

B 5 Capacity test

B 5.1 Load cell

A load cell shall be installed between the excavator bucket hinge pin and anchorage points, vertically below the

hinge pin.

B 5.2 Position of boom/arm

The boom/arm shall be so positioned that the line between boom hinge pin and bucket hinge pin is horizontal

when the force is applied.

B 5.3 Test procedure

B 5.3.1 Step one

The test force shall be progressively applied until either;

a) The tipping load is reached or

b) The hydraulic holding circuit pressure is reached.

B 5.3.2 Step two

After completion of step one, the hydraulic lift capacity (as defined in B 1.4) shall be measured.

B 5.4 Verification


12/12

IS 20474-14

Doc :MED 07(1209)

12

The following shall be measured and recorded:

a) The lift point radius;

b) The tipping load;

c) The hydraulic holding circuit pressure;

d) The hydraulic lift capacity;

B 6 Rated lift capacity in bucket or shovel application

The rated lift capacity for a backhoe loader used in bucket or shovel application shall be determined either by:

- 75% of maximum load according to B 5.3.1 a) or

- Hydraulic lift capacity according to B 5.3.2

Whichever is less

B 7 Rated lift capacity in object handling

Rated lift capacity in object handling shall be determined either by:

- 75% of maximum load according to B 5.3.1 a) or

- 87% Hydraulic lift capacity according to B 5.3.2

Whichever is less

B 8 Rated lift capacity with attachment

The rated lift capacity shall be determined with the backhoe in the centre position at maximum lift pointradius, minus the mass of the attachment. Backhoe loaders with side shift shall be measured both with the

backhoe in the centre position and fully side shifted.

Documents

Dgms Circular