COMPANYNAME SOLAS TRAINING MANUAL PART B – Section 10 Breathing Apparatus
10.8.
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EMERGENCY LIFE SUPPORT APPARATUS (ELSA)
This equipment comprises either a small (240 or 400 litres) air cylinder which is contained in a specially designed jerkin. On opening the cylinder valve, air is supplied to a clear polythene hood, which the wearer puts over his head. Air is supplied at a constant flow of 40 litres/minute thus giving a total duration of either 6 minutes or 10 minutes. When not in use, the hood is stowed in a pouch in front of the jerkin.
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The equipment is designed for use in enclosed spaces, which have been tested and are believed to be gas free and containing 21% oxygen. Such testing cannot, however, guarantee the atmosphere in some remote parts of tanks and double bottoms and the ELSA helps to safeguard against the discovery of gassy or oxygen deficient pockets. A pouch for an oxygen alarm is incorporated in the jerkin.
10.9.
FILTER RESPIRATORS
Filter canisters are available for a wide range of chemical and noxious substances and are generally used in conjunction with either or half face masks. In most cases, protection is only offered against lower concentrations of vapours and manufacturers’ instructions should always be consulted before use. Canisters are supplied sealed at both ends and have a shelf life expiry date marked on them. Once the seals have been broken the life of the filter is immediately reduced, normally to about 6 months, even if it is not exposed to a contaminant.
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