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Thursday, October 22, 2020

Confined Space-Entry Safety Guidelines

Confined Space Entry Requirements & Safety Measures 

  1. Written program
  2. Hazard identification procedures
  3. Hazard abatement and control
  4. TRA completed
  5. Permits\Certificates 
  6. Employee training
  7. Proper equipment
  8. Adequate rescue plan
  9. Written Work Procedure

Equipment Required 

  1. Testing and monitoring
  2. Ventilating
  3. Communications
  4. Lighting, barriers, and shields
  5. Safe ingress and egress
  6. Rescue and emergency
  7. PPE
  8. Specific equipment needed
  9. Fire Protection
  10. Illumination\Electrical equipment

In what Conditions a confined space permit to work (PTW) can be issued?

  • If properly ventilated, 
  • Gas test readings are satisfactory, 
  • Properly barricaded and warning signs are posted, 
  • Competent and trained standby personal is present with log sheet, 
  • Sufficient lighting and low voltage electricity (24V110V), 
  • Proper means of communication, 
  • Locked and tagged out if necessary, 
  • Lifeline and man retrieval system if mandatory, etc. 

Knowledge Point: 

  1. only 45 c’ max temperature allowed inside CSE
  2. Human body temp always 37c’
  3. Claustrophobia: - mean a man getting fear to entering inside confined space 
  4. Acrophobia: - when a man getting fear to go on height 
  5. Hydrophobia: - main fearing to enter in water. 
  6. Suspensions trauma: - after fall of personal from height he gets unconscious that's called suspension trauma
  7. Standard size of Manhole: one entrance hole in dimensions of 600 x 600 mm or 600mm diameter

During Entry:

  • Maintain ventilation, maintain communication, maintain atmospheric check
  • Any required electrical lighting or tools shall be powered by a low voltage system of not more than 24 volts
  • Lighting should be provided if necessary, a maximum of 24 volts lighting should be used attached with GFCI 
  • Only intrinsically safe or explosion proof equipment/device/tools shall be used inside
  •  Required gas test such as H2S less than 10 PPM, O2 19.5 – 22.5 %, CO2 35-50 PPM, LEL less than 5%
  • All persons should be certified TPC
  • If O2 less than 19.5 % breathing difficulty
  • If O2 more than 23.5 % can burn the hair
  • If welding welder is to be protected with an insulated mat or cradle to avoid body, contact
  • Always cover any cut or stretches with a water proof plaster
  • Cylinders not allowed to bring inside confined space

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