Page 185 - International safety guide for oil tankers and terminals

ENCLOSED SPACES

hood and a flame retardant high visibility bag or jacket. They are normally
constant flow devices providing compressed air to the wearer at a rate of
---ใช้เพื่อการศึกษาเท่านั้น---
approximately 40 litres per minute, giving a duration of 10 (as a minimum)
or 15 minutes, depending on the capacity of the bottle. Compressed air
EEBDs can normally be recharged on board with a conventional SCBA
wearer to breath normally when escaping from a hazardous atmosphere.์นาวี
compressor.
The pressure gauge, supply valve and hood should be checked before
use.
Re-Breathing Type
These sets normally consist of a robust watertight carrying case,
compressed oxygen cylinder, breathing bag, mouthpiece and a flame
งานห้องสมุด ศูนย์ฝกพาณิชย
retardant hood. They are designed for single use by the wearer. When the
hood is placed over the user’s head and the set activated, exhaled air is
mixed with compressed oxygen inside the breathing bag to allow the

It is stressed that EEBDs are for emergency escape, and should not be
used as the primary means for entering oxygen deficient compartments,
or while fighting fires.

10.8.4 Cartridge or Canister Face Masks
These units consist of a cartridge or canister attached to a face mask.
ึ
They are designed to purify the air of specific contaminants. They do not
supply any further air. It is important that they are only used for their
designed purpose and within the limits prescribed by manufacturers. Such
limits include an expiry date for the cartridge or canister.

Cartridge or canister face masks will not protect the user against
concentrations of hydrocarbon or toxic vapours in excess of their
design parameters, or against oxygen deficiency, and they should
never be used in place of breathing apparatus.

10.8.5 Hose Mask (Fresh Air Breathing Apparatus)
This equipment consists of a mask supplied with air from a large diameter
hose connected to a rotary pump or bellows. It is cumbersome and
provides no seal against the entry of gases.

Although hose masks may be found on some ships, it is
recommended that they are not used for enclosed space entry.

10.8.6 Equipment Maintenance
All respiratory protective equipment should be examined and tested by a
Responsible Officer at regular intervals. Defects should be made good
promptly and a record should be kept of inspections and repairs. Air
bottles must be recharged as soon as possible after use.
Air bottles must not be in a damaged or corroded condition and should be
tested hydraulically, in accordance with legislative requirements.

© ICS/OCIMF/IAPH 2006 151