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Simon Storage, Fluorobenzene Gantry / Tank 24
Instrument & Electrical Installation Tender Package
DOCUMENT REF: SI347001.INS
ISSUE: B DATE: 13.10.97
PAGE: 8 OF 23
2.8
Earthing
(Cont.)
2.8.4
Lightning Protection
Lightning protection is not anticipated for the plant.
2.9
Cabling
2.9.1
General
The schedules detail the cables with the estimated lengths for tendering purposes only. It is
the Installation contractors responsibility to site measure prior to any cable installation and
any cost variation must be advised to the Engineer for approval before installation.
All cables above 16 sq mm section shall have shaped conductors.
Before any armoured cable is installed, triplicate copies of the test certificate giving details
of these tests shall be submitted to the Engineer for approval.
When delivered to site, each coil of cable shall have attached the manufacturer's test
certificate.
When cables are steel wire armoured, the conductance of the armour shall be not less than
50% of the conductance of one phase core.
2.9.2
Installation
Bending radii shall conform to the maker's recommendations but in no case shall be less
than:
8 x OD for armoured cables.
Cables shall be identified with durable, non-corrodible tags, of the Critchley K type or
equivalent, inscribed with the reference number allocated in the cable schedules and fixed
securely to the cable.
All cables shall be tagged as follows:
a. At each termination.
b. Where they enter and leave underground ducts.
c. At each side of any barrier through which they run.
d. Where they rise from one level to another.
All cores shall be terminated using approved crimped lugs of appropriate size. Spare cores
shall be made off to unused terminals.
The cores of cables of section larger than 4mm² shall be connected by a means approved by
the Engineer.