Page 111 - International safety guide for oil tankers and terminals

GENERAL HAZARDS FOR SHIP AND TERMINAL

4.8.6 Mobile Telephones
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Most mobile phones are not intrinsically safe and are only considered safe for
use in non-hazardous areas. Mobile phones should only be used on board a
ship with the Master’s permission. Unless certified as being intrinsically safe
(see below), their use should be restricted to designated areas of the
of telephones, by the natural response to answer the call. When taken through์นาวี
accommodation space where they are unlikely to interfere with the ship’s
equipment.

Although transmission power levels of non-intrinsically safe mobile telephones
are insufficient to cause problems with sparking from induced voltages, the
batteries can contain sufficient power to create an incendive spark if damaged
งานห้องสมุด ศูนย์ฝกพาณิชย
or short circuited. It should be borne in mind that equipment such as mobile
telephones and radio pagers, if switched on, can be activated remotely and a
hazard can be generated by the alerting or calling mechanism and, in the case

a terminal, or on to or off a ship, they should therefore be switched off and
should only be re-commissioned once they are in a non-hazardous area, such
as inside the ship’s accommodation or clear of the terminal.

Intrinsically safe mobile telephones are available and these may be used in
hazardous areas. These telephones must be clearly identified as being
intrinsically safe for all aspects of their operation. Terminal staff going on
board a tanker, and ship’s staff going into the terminal, carrying mobile
telephones that are intrinsically safe should be prepared to demonstrate
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compliance if requested by the other party. Other visitors to the ship or
terminal should not use mobile telephones unless prior permission has been
obtained from the ship or terminal, as appropriate.

4.8.7 Pagers
Not all pagers are intrinsically safe. Non-intrinsically safe pagers are
considered safe for use only in non-hazardous areas. When taken through a
terminal, or onto or off a ship, they should be switched off and should only be
re-commissioned once they are in a non-hazardous area, such as inside the
ship’s accommodation.

Intrinsically safe pagers may be used in hazardous areas. These pagers must
be clearly identified as being intrinsically safe for all aspects of their operation.
Terminal staff going on board a tanker, and ship’s staff going into the terminal,
carrying pagers that are intrinsically safe should be prepared to demonstrate
compliance if requested by the other party. Other visitors to the ship or
terminal should not use pagers unless prior permission has been obtained
from the ship or terminal, as appropriate.

4.9 Spontaneous Combustion

Some materials when damp or soaked with oil, especially oil of vegetable origin, are
liable to ignite without the external application of heat as the result of gradual heating
within the material produced by oxidation. The risk of spontaneous combustion is
smaller with petroleum oils than with vegetable oils, but it can still occur, particularly if
the material is kept warm, for example by proximity to a hot pipe.

Cotton waste, rags, canvas, bedding, jute sacking, sawdust or any similar absorbent
material therefore should not be stowed in the same compartment as oil, paint etc and
should not be left lying on the jetty, on decks, on equipment, on or adjacent to pipelines

© ICS/OCIMF/IAPH 2006 77