Page 106 - International safety guide for oil tankers and terminals

INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS AND TERMINALS

The cable cores of intrinsically safe circuits should either be insulated
from each other or bonded together and insulated from earth.
---ใช้เพื่อการศึกษาเท่านั้น---

4.4.4.6 Periodic Mechanical Inspections
During inspections of electrical equipment or installations, particular
attention should be paid to the following:
Cracks in metal, cracked or broken glasses, or failure of cement
around cemented glasses in flame-proof or explosion-proof
enclosures.

Covers of flame-proof enclosures, to ensure that they are tight, that no
bolts are missing, and that no gaskets are present between mating
metal surfaces.

Each connection to ensure that it is properly connected.
Possible slackness of joints in conduit runs and fittings.
Clamping of cable armouring.
isolations are effectively managed.ย์ฝกพาณิชย์นาวี
Stresses on cables that might cause fracture.

4.4.5 Electrical Repairs, Maintenance and Test Work at
Terminals
ึ
4.4.5.1 General

งานห้องสมุด ศูน
All maintenance work on electrical equipment should be undertaken
under the control of a permit or an equivalent safety management
system, with procedures that ensure that electrical and mechanical

The use of mechanical lock-off devices and safety tags is strongly
recommended.

4.4.5.2 Cold Work

Cold Work should not be carried out on any apparatus or wiring, nor
should any flame-proof or explosion-proof enclosure be opened, nor the
special safety characteristics provided in connection with standard
apparatus be impaired, until all electrical power has been cut off from the
apparatus or wiring concerned. The electrical power should not be
restored until work has been completed and the above safety measures
have been fully reinstated. Any such work, including changing of lamps,
should only be done by an authorised person.

4.4.5.3 Hot Work
For the purpose of repairs, modifications or testing, the use of soldering
apparatus or other means involving a flame, fire or heat, and the use of
industrial type apparatus, is permitted in a hazardous area within a
terminal, provided that the area has first been made safe and certified
gas free by an authorised person and is then maintained in that condition
as long as the work is in progress. When such Hot Work is considered
necessary on a berth where a tanker is alongside or on the berthed
tanker, the joint agreement of the Terminal Representative and the
Responsible Officer should first be obtained and a Hot Work Permit
issued.

72 © ICS/OCIMF/IAPH 2006