GAS TEST LEVEL II

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GAS TEST LEVEL II
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LEVEL II CONFINED SPACES
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Definition of Confined Space
Any Space With Difficult Access/Egress,Which has
the potential to cause you harm
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POTENTIAL HAZARDS IN CONFINED SPACES

• TOXIC OR FLAMMABLE GASES
• LOW OXYGEN CONTENT
• ROTATING OR MOVING EQUIPMENT NOT ISOLATED
• FLUID OR GAS INLETS OR OUTLETS NOT ISOLATED
• RESIDUE FROM PREVIOUS CONTENTS
• SLIP TRIP OR FALL HAZARDS
• LACK OF ADEQUATE LIGHTING

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DANGEROUS CIRCUMSTANCES
- Concentrations of gases or vapours can arise
from sources both inside and outside confined
spaces. Some examples are
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DANGEROUS CIRCUMSTANCES

• - Some examples are
• Gas or vapour remaining from a process which
  has previously been carried out in the confined
  space.

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OXYGEN

• Oxygen content may be low or absent due to a
  variety of reasons
• Purging with Inert Gas such as nitrogen
• Displacement by other gases from adjoining plant
  area
• Depletion due to oxidation ( rusting ) of metals
• Depletion due to fire or welding / cutting
  process

Low Oxygen remains as the single
biggest hazard in Confined Spaces
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DANGEROUS CIRCUMSTANCES
- Gas or vapour from adjoining plant due to
ineffective isolation.
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DANGEROUS CIRCUMSTANCES
Fumes emitted when sludge deposits are
disturbed during inspection / cleaning.
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DANGEROUS CIRCUMSTANCES

• - Fumes produced by an operation inside a
  confined space, eg welding, flame cutting, lead
  lining, rubber lining, brush and spray
  painting, moulding GRP (fibreglass), use of
  adhesives, solvents , etc.
• The production or combustion of various fuels.

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TESTING CONFINED SPACES
- The tests should check for the presence of gas
or toxic fumes and the adequacy of the supply and
content of Oxygen.
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MSA ORION MULTI-HEAD GAS MONITOR
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TESTING CONFINED SPACES
L.E.L - 0 C0 - 0 PPM H2S - 0 PPM 02
- 20.8
NOTE An acceptable result must be obtained
before work in any area proceeds.
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Before any work can be allowed to commence in
an enclosed space, the following conditions must
be met L.E.L. - less than 1 Oxygen - more
than 20 H2S - less than 1 ppm. Carbon Monoxide
- less than 1 ppm
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LEARN THIS! IMPORTANT!
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Upper Explosive Limit
Too Rich
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Explosive
Methane (CH4) IN Air
Envelope
(Explosive Range)
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Lower Explosive Limit
Too Lean
0
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CHECK YOUR PERMIT!
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ENCLOSED SPACE ENTRY PROCEDURE
1 N.B. Ensure Enclosed Space Entry Permit is
Active and all information is correct.
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ENCLOSED SPACE ENTRY PROCEDURE
2 Ensure all Permit Conditions are adhered too.
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ENCLOSED SPACE ENTRY PROCEDURE
7 Ensure all Electrical equipment is
disconnected (Tag Lock out proc)
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ENCLOSED SPACE ENTRY PROCEDURE
8 Ensure Safe Access and Egress Scaffolding
/Platforms / Ladders etc
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ENCLOSED SPACE ENTRY PROCEDURE
9 UNDER ANY CIRCUMSTANCE DO NOT PLACE YOUR
HEAD OR BODY INSIDE OR OVER MANWAY DOORS OR
HATCHES H2S PRECAUTIONS
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ENCLOSED SPACE ENTRY PROCEDURE
11 Inform C.C.R prior to entry. Radio /
Telephone Check
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ENCLOSED SPACE ENTRY PROCEDURE
14 If possible, keep in sight or verbal contact
with Standby Personnel
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ENCLOSED SPACE ENTRY PROCEDURE
16 When work is complete, withdraw slowly and
carefully.
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ENCLOSED SPACE ENTRY PROCEDURE
17 When Exit complete, and clear of immediate
area. INFORM C.C.R.
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ENCLOSED SPACE ENTRY PROCEDURE
18 Clear area and Make Safe
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ENCLOSED SPACE ENTRY PROCEDURE
19 Sign Off any Permits /Certificates etc.
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NEVER MAKE ASSUMPTIONS - ALWAYS CHECK AND IF
DOUBT - CHECK AGAIN.
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Respirators, Dust masks, SCBA or Escape Sets
Know which to use!
Know where to use!
Know how to use!
Dust and Vapours AND Gases! B/A Trained Personnel
use only!!
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Important NEVER USE RESPIRATORS FOR CONFINED
SPACE
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A CARTRIDGE TYPE RESPIRATOR WILL PROTECT YOU
AGAINST CERTAIN ATMOSPHERIC HAZARDS BUT DOES NOT
SUPPLY YOU WITH OXYGEN. REMEMBER, LOW OXYGEN IS
THE BIGGEST KILLER OF CONFINED SPACE ENTRANTS
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THIS MASK CANNOT BE USED FOR CONFINED SPACE ENTRY
!!!!
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Escape Only ! NOT for Confined Space Entry or
Rescue
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IS THIS A CONFINED SPACE?
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CHECK YOUR PERMIT!
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Thank you for your attention.
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