Page 168 - International safety guide for oil tankers and terminals

INTERNATIONAL SAFETY GUIDE FOR OIL TANKERS AND TERMINALS

The prime function of these meetings is to ensure that all personnel involved
are aware of the daily schedule, the interrelation between contractors,
---ใช้เพื่อการศึกษาเท่านั้น---
particular areas of concern and special precautions to be taken etc.

งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
9.8.8 Work Permits
Permits should be issued for the relevant repair work jobs, including any
repairs being carried out by ship’s staff. In particular, permits should be
issued for:
Enclosed space entry.

Hot Work.
Electrical isolation.
Other hazardous tasks.

Copies of all permits should be posted as may be necessary. Copies should
also be retained by the person in charge of the operation.
All personnel involved should be made fully aware of the requirements for, and
benefits of, the work permit system, and should be advised of restrictions on
commencing any work until the appropriate permit has been issued.

ึ
9.8.9 Tank Condition

Whether the ship is gas free or not will depend on the work being undertaken
and the specific port or facility regulations.

A certified chemist should test all cargo/ballast spaces for oxygen content and
hydrocarbon content. The conditions of all tanks and void spaces should be
included on the chemist’s certificate.

As a minimum, gas free certificates should be issued on a daily basis.

If cargo tanks are not required to be gas free and the ship is inert, positive
inert gas pressure should be maintained within the tanks at all times.

9.8.10 Cargo Lines

All cargo lines on deck, in the tanks and in the pumproom, including those
lines and pumps which may not have been used for recent cargo or tank
cleaning operations, should be thoroughly washed and drained. This includes
any dead ends in the system.

In addition to the cargo suction and discharge lines (including stripping lines),
slop tank balance lines or other similar fittings commonly found between slop
tanks should also be cleaned and drained as part of the preparation for repair
work.

The hydraulic valve system should be isolated in such a way as to prevent
unintentional operation of cargo valves during the work process. Appropriate
notices should be posted and the persons in charge of the relevant repair
team(s) should be advised.

134 © ICS/OCIMF/IAPH 2006