Page 253 - International safety guide for oil tankers and terminals

Chapter 12
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CARRIAGE AND

งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
STORAGE OF

HAZARDOUS

MATERIALS

This Chapter provides guidance on the carriage and storage of hazardous
materials carried on board tankers as cargo, as ship’s stores or as cargo samples.

ISGOTT does not attempt to give guidance on the many hazardous chemical
cargoes that may be shipped from time to time.

General guidance on the properties of such cargoes may be obtained from the
ึ
ICS Tanker Safety Guide (Chemicals), and Material Safety Data Sheets (MSDS)
on specific chemicals should be obtained from the shipper. Recommendations
on handling and storage, necessary for compliance with the SOLAS Convention
and any national requirements, are given in the International Maritime Dangerous
Goods (IMDG) Code.

12.1 Liquefied Gases

In addition to the general precautions for handling packaged petroleum and other
flammable liquids given in Section 12.5 below, the following safeguards should be
observed when handling packaged liquefied gas cargoes:

Pressurised receptacles should be suitably protected against physical damage
from other cargo, stores or equipment.
Pressurised receptacles should not be over-stowed with other heavy goods or
other items.
Pressurised receptacles should be stowed in such a position that the safety relief
device is in contact with the vapour space within the receptacle.

Valves should be protected against any form of physical damage with a suitable
protection cap in place at all times when the cylinder is not in use.
Cylinders stowed below deck should be in compartments or holds capable of
being ventilated and away from accommodation and working areas and all
sources of heat.

Oxygen cylinders should be stowed separately from flammable gas cylinders.
Temperatures should be kept down and hold temperatures should not be
permitted to rise above 50ºC. Hold temperatures should be checked constantly
and, if they approach this level, the following measures should be taken:
The storage locations should be ventilated.

The liquefied gas containers should be sprayed with water if loading or
discharge operations are carried out in direct sunlight.

© ICS/OCIMF/IAPH 2006 219