Operations; Safety; Risk Management - MSA ORION Manual

12
SECTION 3: OPERATIONS
3.1

Safety

3.1.1

Risk management

Use the Orion when your dynamic risk assessment indicates one of the following
hazardous atmospheres might exist and that atmospheric monitoring is a suitable
control measure:
• oxygen enriched or deficient atmospheres
• presence of CO and/or H
• the explosive hazard presented by combustible gases.
In addition, the oxygen concentration shown by the Orion can be used as an
indicator of other contaminants. See
for more information.
This monitoring helps determine:
• the hot zone
• safe OHS limits for the use of personal protective equipment for these hazards
• render safe.
Atmospheric monitoring is mandatory in confined spaces.
The Orion must only be operated by personnel trained in its use.
Consider adequate fire protection.
If a toxic gas alarms sounds, notify the Incident Controller (IC) and continue
monitoring.
When operating in an ambient temperature above 40
sounds, stop your activity and reassess your dynamic risk assessment and incident
action plan. If required, exit and/or seek specialist advice from HMRU on the nature
of the contaminant.
When operating at any ambient temperature in an environment which may contain
carbon disulphide, exit the area if the 10% LEL alarm sounds.
See A.8: 'Temperature class', on page
D.I. Recommended Practice
FILE: W:\NB\RP HMRU\Orion\Frame Ver 02\Orion.fm
WARNING
At all times, observe the following safety precautions when operating
the Orion multi-gas detector.
2
WARNING
The Orion does not measure the toxicity of combustible gases.
Always be aware of the toxic hazard as well as combustibility. Always
wear BA when conducting atmospheric monitoring.
Only monitor gases for which sensors have been fitted. Do not
attempt to monitor other gases.
S
Section 3.4.1: 'Operational hints' on page 24
40, for temperature classes of gases.
Version 02 Issued February 2011
© Copyright State of NSW (Fire and Rescue NSW) 2011
Four-Head Gas Detector: MSA Orion
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C and your 10% LEL alarm