FS4005 Cable Trays

VOL No III

OFFSHORE

DESIGN SECTION MUMBAI REGION

FUNCTIONAL SPECIFICATION

FOR FRP CABLE TRAY

REV No 1

SPEC NO FS 4005

FORMAT NO : ODS/SOF/004

WELL PLATFORM

PROJECT

SHEET NO 1 OF 7

FUNCFTIONAL SPECIFICATION FOR

FRP CABLE TRAYS

OIL AND NATURAL GAS CORPORATION LTD., INDIA

ISSUED AS PREPARED BY

REVISED BY

APPROVED BY

TOTAL PAGE

DATE REV NO

VOL No III

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FOR FRP CABLE TRAY

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SPEC NO FS 4005


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CONTENTS SECTION PAGE

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SCOPE CODES AND STANDARDS SITE CONDITIONS SCOPE OF SUPPLY TECHNICAL REQUIREMENTS TESTING AND INSPECTION SPARES WARRANTY VENDOR DATA REQUIREMENTS CONFLICT CERTIFICATION PACKING AND TRANSPORTATION ATTACHMENTS

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VOL No III

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SPEC NO FS 4005


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SCOPE : The intent of this specification is to define the requirements of Fibre Glass reinforced plastic cable trays, necessary hardware, accessories and fittings etc. required for laying of Power and control cables on offshore platforms. CODES AND STANDARDS: The following codes and standards shall form part of this specification. ANSI/NFPA American National Standards Institute/National Fire Protection Association. NEC U.S. National Electrical Code NEMA FGI-198X U.S. National Electrical Manufacturer's Association. ASTM American Society for Testing and Material BSI British Standards Institution. IEC International Electrotechnical Commission ISI Indian Standards Institution API-RP-14F American Petroleum Institute - "Design and Installation of Electrical System for Offshore Platform". Any other International Standard or Code may be used in lieu of above, subject to prior approval of the Company.

VOL No III

OFFSHORE



FOR FRP CABLE TRAY

REV No 1

SPEC NO FS 4005


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PROJECT

SHEET NO 4 OF 7

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SITE CONDITIONS : All the cable trays and their accessories shall be designed to withstand the conditions specified in the General Specification "Site Condition and Climate" (Spec No 5006) or as given in particular specification, if specified therein. SCOPE OF SUPPLY : The scope of supply through this specification includes: Fibre glass reinforced ladder type, ventilated and solid bottom cable trays and tray covers Accessories such as bends, tees, crosses, reducers, splicers and necessary hardwares etc. TECHNICAL REQUIREMENTS : Fibre Glass Cable Trays : Fibre glass cable trays shall be manufactured in accordance with NEMA FGI-198x and ASTM E-84 Standards. All cable trays and accessories shall be made of the fibre glass and shall be corrosion resistant and fire retardant (Class 1, Fire rating) in accordance with the latest ASTM E-84. An additive material shall be mixed with the fibre glass to make them resistant to ultraviolet light. The minimum glass content in FRP material shall be 45% The ladder type trays shall have side rails and horizontal rungs. Both of these shall be of same material i.e. the Fibre glass with additive. The rungs shall be placed 300 mm apart from each other. The cable trays shall be supplied in standard lengths of 3000 mm and clear width of trays shall be 150, 300,600 and 750 mm. The tolerance

VOL No III

OFFSHORE



FOR FRP CABLE TRAY

REV No 1

SPEC NO FS 4005


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PROJECT

SHEET NO 5 OF 7

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on width and length shall limited to ± 6 mm. The overall width of the cable tray shall not exceed inside width by more than 100mm. The inside depth of the cable trays shall not exceed 150 mm. The tray construction shall have high degree of finish and shall be such as to facilitate easy handling as also to ensure easy laying of cables without causing damage to cables. The inside surface shall be perfectly smooth and free from sharp edges, burrs or projections, etc. Each section of tray shall be complete with necessary connector plate and hardware. The hardware shall conform to NEMA FGI-198X and shall be able to withstand the loading as specified below. The bends, tees, reducers, crosses and droppers shall have required bending redii but not less than 300 mm. For tray system design, in addition to self load, following guideline for design shall be considered : a) Support Span 3000 mm. b) Cable load for

i). 150 mm width 30 kg/Linear Metre. ii). 300 mm width 60 kg/Linear Metre. iii). 600 mm width 90 kg/Linear Metre. iv). 750 mm width 120 kg/Linear Metre.

In addition to this, 70 kg concentrated load at centre span with a safety factor of 2 shall be considered. The side rails and all accessories shall have the holes on each end for fixing connector plates. The connectors between two sections of cable trays or a Section of cable trays with associated accessories shall be done by bolting only. TESTING AND INSPECTION : Testing and inspection of cables trays shall include but not necessarily be limited to the following :

VOL No III

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FOR FRP CABLE TRAY

REV No 1

SPEC NO FS 4005


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PROJECT

SHEET NO 6 OF 7

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A quantitative check shall be made to ensure that all items with accessories are present according to order and the packing list. A visual inspection shall be made to ensure that good workmanship and practice were maintained throughout the fabrication. Fibre glass type of trays shall be tested as per NEMA-FGI-198X. Following tests shall be carried out on each type of tray system. a) Destruction Load Test b) Deflection Test Company reserves the right to witness the final test and inspection. Prior notice of at least 20 days shall be given to enable the Company to depute its representative to witness the test. SPARES : Vendor shall supply 20% hardware such as nuts, bolts, splice/connector plate for each type and size of cable trays and accessories. These shall be properly wrapped and packed separately, clearly marked as “spare hardware” for cable trays and shipped alongwith trays. Packing list shall be furnished so that the parts can be handled without uncrating, if required. WARRANTY : Vendor shall have final and total responsibility for the design and performance of trays supplied under this specification. Vendor shall warrant the trays furnished, by them and the performance of said trays in accordance with this specification and "General Specification Definition" (Spec No. 1050)

VOL No III

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FOR FRP CABLE TRAY

REV No 1

SPEC NO FS 4005


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VENDOR DATA REQUIREMENTS : Vendor shall furnish data in accordance with General Specification "vendor Data Requirement" (Spec No. 1060) CONFLICT : In the event of conflict between this specification and other documents listed herein, the following order of priority shall govern: i). Design Criteria, drawings and data sheet (whichever applicable). ii). This Specification. iii). General Specifications. iv). Codes and Standards. CERTIFICATION : All offered cable trays or those of similar designs manufactured by the same supplier:

− shall have been type tested by an authority approved by the Company.

− shall have been in continuous satisfactory service in off-shore for a minimum period of two years.

− shall be having current certification/approval/listing by an approved agency or UL or FM

PACKING AND TRANSPORT : The offered cable trays alongwith their accessories shall be shipped to site packed in wooden crates. They shall be wrapped with polythene sheets, before being placed in the crates to prevent damage to finish. Crates shall have skid bottom for handling. ATTACHMENTS : The following, by reference, shall form part of this specification. General Specifications (GS): 1050 General Specification - Definition 5006 Site Conditions & Climate

VOL No III

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FOR FRP CABLE TRAY

REV No 1

SPEC NO FS 4005


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PROJECT

SHEET NO 8 OF 7

Documents

FS4005 Cable Trays