Working Inside Confined Space
FOR DETAILED INFORMATION REFER TO SOP: SULBQHSE-P-24
Definition: Has limited or restricted means for entry or exit (e.g. tanks, vessels, excavations “More than 1.2 m deep”, etc.),
for addition information refer to page 16 in the procedure.
Requirements to work in a confined Space but not limited to the following:
1. Standby Man to monitories authorized entrants, he shall be the preliminary alarm raiser and contact emergency
services in case of an incident occur.
2. Gas Tester, a trained and authorized who has completed gas detection and monitoring training and/or is authorized
by the department manager.
3. The LEL must not exceed 10% of Methane Gas in the approved personal gas detector device.
Confined Space Register:
1. All confined Space shall be recorded in the confined Space Entry register
(Sulb-QHSE-F-33) and must be available to all workers on the site.
2. Location of the confined space,
3. Frequency of entry,
4. Date assessed,
5. Risk level,
6. Relevant P&ID number if required,
Each Department will be responsible for maintaining the confined space
register
Barriers:
The User Department will be responsible
to ensure all confined space entry points
locked or have barriers or guards
installed preventing unauthorized entry.
Warning Signs:
The user Department will be responsible
to post warning signs at all entry points
into confined space.
Confined Space Hazards
1.
2.
3.
4.
5.
6.
7.
8.
Suffocation (lack of Oxygen, presence of toxic gases)
9. Electrocution,
Poisoning (Presence of toxic gases or fumes)
10. Radiation,
Chemical Hazards
11. Burning and Scalding,
Moving Parts
12. Falls, trips and slips,
Fire (flammables and ignition sources)
13. Noise,
Explosion,
14. Temperature, either high or low,
Drowning,
15. Traffic hazards,
Engulfment
16. Falling objects
ANY OTHER HAZARDS, SPECIFIC TO A PARTICULAR CONFINED SPACE
Note: the issuer shall determine and record the gases to be measured and the frequency of repeating the test or the need
for continuous monitoring, the minimum requirement shall be CO, O2%, LEL% ”Methane” and H2S in the PTW. Before
entry 30 minutes and every hour thereafter. Recommend to have a continuous gas monitoring. THE EXECUTOR HAS THE
RIGHT TO REFUSE THE PERMIT IF THE PROPER GAS TEST WAS NOT DONE.
For accurate testing the air movers, blowers and A/C have to be switched off for a minimum of 5 minutes. Breathing
apparatus shall be provided to the workers where it is not possible to provide a safe oxygen level.
It is preferred to use 24 Volts lighting system, not to take welding machine
power supply cables inside and use electrical tools, light grinder/ drilling
machine having a power supply cables with no damage or joints. This is to
avoid accidental electric shock.