SECTION 16110F

SECTION 15496

FUEL OIL STORAGE TANK

PART 1 GENERAL1.01 DESCRIPTION OF WORKS

A. The work includes the provision of all labour, supervision, materials, equipment, accessories, services and tests necessary to complete and make ready for operation by the Employer, all fuel oil storage and distribution work in accordance with drawings and specifications.

RELATED DOCUMENTSA. The requirements of this section apply to equipment specified elsewhere in the specification.1.02 QUALITY ASSURANCEA. The installation shall comply with NFPA30, BS2594, Dubai Civil Defences requirement and Dubai Environmental Pollution Control Authoritys requirement.1.03 SUBMITTALSA. Shop drawings indicating sizes, types, location and method of installation.B. Product Data: Manufacturers printed data, catalog cuts, recommended method of installation.

C. Submission form and drawings for the fuel tanks required for Dubai Civil Defence and Environmental Pollution Control Authority submission, the submission shall be prepared, endorsed and submitted to Dubai Authority by the Contractor Professional Engineer.

D. Details of the contractors professional personnel who tests and certify all the fuel tanks.

E. Detail fuel circulation shop drawing incorporate manufacturer engineering input complete with pump sizing calculation endorsed by the Contractor and the manufacturer.

PART 2 PRODUCTS

2.01 DAY TANK

A. A fuel storage day tank shall have a capacity minimum for at least 8 hours full load emergency back up located adjacent to this respective diesel generator set. Should the required 8 hours storage capacity exceeds 700 litre, additional separated fire compartment to Civil Defence requirement shall deem to include in this contract shall be incorporated to housed the fuel tank.

B. High/low level indicators shall be installed at the engine control panel. An audio and visual alarm system shall sound when the fuel is at dangerously low level.

C. A manual hand pump shall be provided.

D. The system shall be complete with fuel supply and return pipes suitable size to transfer the fuel supply from the day tank to the engine.

E. Overflow/vent should be installed to comply with the local requirement.

F. Filter shall be provided at the draw-off line. Alarm shall be raised at the BMS, and simultaneously, audible and visual indication provided at the day tank vicinity to alert maintenance if the day tank is at high level.

G. The tank shall be manufactured in accordance with BS 2594 and fabricated from good commercial quality galvanised steel sheet of 6mm thickness. The ends of the tank and all outlets shall flange and electrically welded throughout and slag/spatter removed.

H. The voltage-free contacts shall be provided for connection to the Building Management System (BMS).

I. All installations shall be carried out in accordance with NFPA 30, Civil Defence and all local authorities requirements inclusive of liaison, submission, endorsement and payment of all fees and charges for the testing and inspection on the whole installation.

J. Fuel oil shall meet the requirement of Generator manufacturer.

K. All tanks shall be completed with drip tray and leakage sensor complete with alarm.

2.02 BULK STORAGE TANK AND PIPING

A. The complete system shall include engineering, supply, installation, testing and commissioning the bulk storage fuel tank, pumps, piping, valves and control system.

B. Submission and approval shall be obtained prior to installation.

C. Suitability. The complete system shall be engineered and constructed for the conditions of use, and in particular:

1. It shall be compatible with the particular liquid or any other component with which it may be in contact;

2. It shall be resistant to any heat to which it may be exposed; and

3. Where subject to corrosion, it shall be sufficiently resistant to ensure a life span of 15 years.

4. It shall comply with Civil Defence requirement, relevant British standards and NFPA 30.

D. All tanks shall be completed with leakage collection and leakage sensor complete with alarm.

E. Flexible tube. Flexible tubing, piping or hose may be used only on condition that:

1. The use of such tubing is avoidable because of the need to provide for movement or to reduce the effect of vibration;

2. The tubing is of flexible metallic, metal-reinforced, armoured or other construction suitable for the working pressure, temperature, and the liquid being handled.

F. Manufacturing and construction: The following general consideration shall be taken into account when manufacturing and installing any piping:

1. The layout shall take account of the needs for operating access, maintenance, replacement, drainage, etc. and shall ensure that any access ways are not impeded.

2. Supporting and fixing shall be secure and the piping shall be not unduly exposed to mechanical damage.

3. Protection against corrosion shall be provided wherever necessary. Particular attention shall be given to outside and underground locations or to any piping, which passes through or is embedded in any material likely to induce corrosion.

4. Provision shall be made, wherever necessary, for the expansion or contraction of the piping and its contents.

5. Any trench in which pipes are laid shall be drained, and shall be of adequate dimensions to permit access to valves and fittings.

6. Any buried piping shall be protected from superimposed loads, ground settlement, etc.

7. Any necessary electrical bonding and earthing shall be provided.

8. Piping shall be painted and/or marked in a manner sufficient to permit ready identification of its contents.

9. Where piping is encased in concrete, means shall be taken to guard against corrosion and to provide for expansion.

10. Leakage sensors shall be included to detect the bulk storage tank and piping for monitoring purpose.

11. Provide fuel pump control panel that has remote fuel level indications and High/low level alarm indications with buzzer and acknowledge button interface with bulk fuel tank.

G.Product Storage Requirement

1. Tanks must be vented. Tanks are manufacturing for operation at atmospheric pressure only.

2. Tanks shall be capable of storing liquids with specific gravity up to 1:1.

3. Maximum temperature. Tanks shall be capable of storing fuel oil at temperatures not to exceed 75oC at the tank interior surface.

4. Tanks shall be chemically inert to petroleum products.

H.Accessories:

1. Anchor straps provide steel reinforced anchor straps for tank. Number and location of straps shall be as specified by manufacturer.

Straps shall be standard as supplied by the tank manufacturer.

2. Certification Plate label shall be permanently affixed to each tank.

3. Flanged Manways

a) The standard manways to be 600mm I.D.

b) The manway will be furnished complete with gaskets, bolts and covers.

I. The manufacturers price shall include the cost of all shipping permits and transportation to deliver the tank to the jobsite.

J. The tanks shall be set on a 300mm of pea gravel and anchored to a concrete foundation with fiberglass hold-down straps as recommended by the manufacturer. Each strap shall be capable of withstanding the buoyancy load for the tank diameter.

K. The manufacturer of the tank shall submit shop drawings of the tank for approval. The shop drawings shall indicate the size, construction data, tapping connections, location of the tappings and hold-down installation.

L. Performance Warranty:

Tank manufacturer shall furnish a warranty stating as follows:

We warrant that our tanks if installed in accordance with our instructions:

1. Will meet our published specifications and will be free from material defects in materials and workmanship for a period of one year following date of original shipment;

2. Will not fail for a period of thirty (30) years from date of original shipment due to external corrosion;

3. Will not fail for a period of thirty (30) years from date of original purchase due to internal corrosion, provided the tank is used solely with fuel oil at temperature not to exceed 75oC.

4. Will not leak for a period of thirty (30) years from date of original purchase due to structural failure (defined as breaking or collapse) provided the installation is performed and validated by a qualified installation contractor and the tank is used as stated above.

M. Alarm functions of the tank gauging systems follows:

1. Low level on tank: Flashing display on gauge and sounding of local alarm bell. Alarm silencing pushbutton silences bell, display continues to flash until situation corrected.

2.03 OIL FILL AND VENT TERMINALS

A. Furnish and install fuel oil pump sets of sizes and capacities as shown in the drawings.

BVent Heads Oil tank vent pipe terminal shall be provided with a weatherproof type vent head.

part 3 - EXECUTION3.01 INSTALLATIONA. Install in accordance with approved shop drawings and manufacturers recommendation.3.02 ADJUSTMENTSA. When the system is energized make all required adjustments and test as per manufacturers recommendations for leakage.

3.03 SITE TEST

A. The generator fuel tank shall be filled with sufficient diesel fuel to BS2869 Class A prior to the site test. Upon completion hand over of the installation, the storage tank shall be filled with full tank.

3.04 PROTECTION OF TANK AND ASSOCIATED PIPE WORK AFTER HYDRAULIC TEST

A. Immediately after hydraulic testing of the tank, the Contractor will drain and dry it out and apply some protection coatings to the manufacturers recommendation on the interior surface of the tank to prevent rusting.

B. The Contractor shall be responsible to drain all associated pipe work, fittings and valves after hydraulic test. All pipe work must be dried and flushed out with oil to remove any trace or water to prevent rushing.

3.05 PAINTING OF PIPE WORK

A. All pipe work, other than buried pipes, shall be painted immediately after installation with at least one coat of red primer and two (2) finishing coats of best quality aluminum paint approved by the Contractor. The colour will be determined by the Engineer on site.

3.06 Vibration Control

A. The complete generator assembly shall be isolated on static deflection unhoused spring-neoprene in series isolator with non-skid neoprene pads. Start-up and shut down rocking restraint snuffers shall be provided at four corners of base frame.

B. All fuel line pipes shall be cushioned with a layer of harnesss and neoprene pad at attached points.

C. All pipe work and engine silencers shall be suspended on static deflection spring-neoprene in-series hangers.

D. Detail calculation and proposal for justifying the size and provision shall be provided for Engineers review prior to the installation.

3.07 INTERFACE

A.As the fuel bulk tanks will be provided by the Contractor, the Contractor shall be required to work closely and coordinate with his Fuel Tank Supplier for the satisfactory commissioning of the following:

1. To provide marshalling boxes for system interface with the fuel bulk tank installation, including the following status and alarm monitoring at the fuel pump control panel.

a. Remote fuel level indications

b. High/low level alarm indications with buzzer and acknowledge button

2. To coordinate and accommodate for the exact location of the mechanical fuel level indications inside the Fuel Pump Room.

3. To connect fuel supply and return pipes, inclusive of all necessary control valves from the service bulk tank to the fuel pumps.

3.08 HYDRAULIC TESTING OF FUEL BULK TANK AND PIPEWORK

A. Hydraulic testing is required for the bulk tanks and the associated pipework.

B. During the hydraulic test, the following test pressure shall adopted:

1. 70 kPa for fuel bulk tank: per BS2594

2. 70 kPa for the associated pipework, valves and fittings. Test for two (2) hours, pressure drop shall not exceed 3%.

C. The test shall be able to last for at least 3 hours without under deformation and leaking.

D. The Contractor may require any pressure gauge employed to be tested and calibrated before use. Pressure gauges with full scale deflection readings more than three (3) times the test pressures shall not be used.

E. The Hydraulic Testing of the fuel tank shall be witness by Contractor professional personnel and endorse the installation for any Dubai Authority.

END OF SECTION

Burj Dubai Dubai Mall Hotel, Dubai, United Arab EmiratesFuel Oil Storage Tank

MEP Spec-For Construction (Date of Issue: Jan 2006)15496.1