ELSA DASH/SPRINT
1
1. INTRODUCTION
1.1 BREATHABLE AIR
Air for compressed air breathing apparatus
may be natural or synthetic. A typical
composition of natural air (at atmospheric
pressure and room temperature) is shown
in Table 1.
Element Mass %
(Dry Air)
Volume %
(Dry Air)
Oxygen 23.14 20.948
Nitrogen 75.52 78.08
Argon 1.29 0.93
Carbon Dioxide 0.05 0.031 4
Hydrogen 0.000 003 0.000 05
Neon 0.001 270 0.001 818
Helium 0.000 037 0.000 524
Krypton 0.000 330 0.000 114
Xenon 0.000 039 0.000 009
Table 1: Breathable Air
The quality of air used to supply and
charge breathing apparatus must conform
to EN 12021 : 1999 (Requirements for
Breathable Air).
Fire risk increases when the oxygen level
rises above the value shown in Table 1.
Contaminants must be kept to a minimum,
and must not exceed permissible
exposure levels.
Cylinder water content of air at
atmospheric pressure must not exceed 50
mg/m
3
for 200 bar cylinders or 35 mg/m
3
for 300 bar cylinders.
National regulations for compressed air
breathing apparatus must be observed.
1.2 APPARATUS SELECTION
When selecting respiratory protective
equipment the following factors must be
considered:
• Hazards likely to be encountered
and their effect on the wearer.
• Physical and emotional stress and
their effect on wearer breathing rate.
• The type of respiratory protection
required.
In general, constant flow escape breathing
apparatus is NOT suitable for use where:
• There are unknown hazards.
• There are no planned escape
routes.
• There are escape routes that require
physical exertion, e.g.: ladders,
tunnels and hatches.
1.3 TRAINING
These instructions cannot replace an
accredited training course run by fully
qualified instructors in the proper and safe
use of Sabre breathing apparatus.
Please contact Training and Technical
Support Services or your Sabre
distributor for training course details.
Training and Technical Support
Services:
Scott Health and Safety Limited
Pimbo Road, West Pimbo,
Skelmersdale, Lancashire,
WN8 9RA, United Kingdom.
Tel: +44 (0) 1695 711711
Fax: +44 (0) 1695 711775
1.4 SERVICING
ELSA apparatus must be serviced by
personnel who have completed a formal
training course and hold a current
certificate for servicing and repairing
Sabre breathing apparatus. Details of the
servicing schedule are contained in the
ELSA Dash and ELSA Sprint Service
Manuals, copies of which can only be
obtained by registered holders of a current
certificate.
Your Sabre distributor or Training and
Technical Support Services will be
pleased to provide training course details
and quotes for service contracts. Please
see previous page for contact details.
1.5 SHELF LIFE
Providing that ELSA apparatus is serviced
regularly as described in the ELSA Dash
and ELSA Sprint Service Manuals, there
are no shelf life limitations.
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