Page 183 - International safety guide for oil tankers and terminals

ENCLOSED SPACES

Means of continuous communication are provided and a system of signals is
agreed and understood by the personnel involved.
---ใช้เพื่อการศึกษาเท่านั้น---
Spare sets of breathing apparatus, a resuscitator and rescue equipment are
available outside the space and a standby party, with breathing apparatus
donned, is in attendance in case of an emergency.
งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
All essential work that is to be undertaken is carried out in a manner that will
avoid creating an ignition hazard.

If personnel are not connected to a lifeline, appropriate means should be in place
to identify where the persons are whilst inside the space.

10.8 Respiratory Protective Equipment

A number of different types of respiratory protective equipment are available for use
on board ship.

Some respiratory protective equipment is required to be carried to meet the fire
safety provisions of SOLAS. However, under the provisions of the ISM Code, the
Company is responsible for providing the level of equipment needed to safely
manage all aspects of shipboard operational and safety activities. Respiratory
protective equipment necessary to meet these provisions will, in most cases, exceed
the minimum requirements under SOLAS.
ึ

10.8.1 Self-Contained Breathing Apparatus (SCBA)
This consists of a portable supply of compressed air contained in a
cylinder or cylinders attached to a carrying frame and harness worn by
the user. Air is provided to the user through a face mask, which can be
adjusted to give an airtight fit. A pressure gauge indicates the pressure in
the cylinder and an audible alarm sounds when the supply is running low.
Only positive pressure type sets are recommended for use in enclosed
spaces because, as their name implies, these maintain a positive
pressure within the face mask at all times.

When using the equipment, the following should be noted:
The pressure gauge must be checked before use.
The operation of the audible low pressure alarm should be tested
before use.
The face mask must be checked and adjusted to ensure that it is
airtight. In this regard, the presence of any facial hair may adversely
affect the mask’s seal and, should this be the case, another person
should be selected to wear the apparatus. Alternatively, other
specialist equipment may be provided that allows for facial hair.
The pressure gauge should be monitored frequently during use to
check on remaining air supply.
Ample time should be allowed for getting out of the hazardous
atmosphere. In any event, the user must exit immediately if the low
pressure alarm sounds. It should be remembered that the duration of
the air supply depends on the weight and fitness of the user and the
extent of their exertion.

If the users suspect at any time that the equipment may not be operating
satisfactorily or are concerned that the integrity of the face mask seal
may be damaged, they should exit the space immediately.

© ICS/OCIMF/IAPH 2006 149