Translate

Safety Interview Questions 8 contains interview questions about Hazardous Area Classification, Hazardous AreaZone 0, 1 and 2, Safety Precautions taken GAS WELDING & CUTTING & hazards, Pyrophoric Scale,  EOD and EOD identified, Lock out Tag out (LOTO) System, Chemical Hazard Identification Tag, 

71. What is the different Hazardous Area Classification? (as per KOC) What you mean by Hazardous Area? What is Zone 0, 1 and 2. 
72. Incase of Fire, Accident, Gas leak or Explosion what you will do? 
How you will safeguard your people at the site incase of any leak? Whom & How do you communicate this emergency.
73. Enlist precaution to be taken prior to start the WELDING and GRINGDING works on the pipeline inside GC & why it is required? 
OR 
Explain Safety Precaution for a Hot Work? OR What are the safety precautions you will take for a hot work? Following precaution should be taken during Welding / Hot Work.
74. What are the Safety Precautions taken GAS WELDING & CUTTING?
75. What are the welding and cutting hazards? 
76. What will be your action if someone informs you about accident?
77. What is the Pyrophoric Scale?
78. What is EOD and what will be your responsibility if an EOD identified? 
79. Define Lock out Tag out (LOTO) System?
80. Define Chemical Hazard Identification Tag?

71. What is the different Hazardous Area Classification? (as per KOC) What you mean by Hazardous Area? What is Zone 0, 1 and 2. 

Hazardous Area: Hazardous area is the zone in which a flammable atmosphere may be present during normal operation or under abnormal conditions. Classification of Hazardous Area: 

Zone - 0: Zone in which a flammable atmosphere is continuously present or present for a long period. (Typically more than 1000 hours/year.) 

Zone - 1: Zone in which a flammable atmosphere is likely to occur in normal operations. (Typically 10 to 1000 hours/year) 

Zone- 2: Zone in which a flammable atmosphere is not likely to occur under normal operations and if it occurs, it will only exist for a short time. (Typically less than 10 hours/year)


72. Incase of Fire, Accident, Gas leak or Explosion what you will do? 

How you will safeguard your people at the site incase of any leak? Whom & How do you communicate this emergency.

 Inform to nearest fire station / Burgan fire station with clear details about the incident and emergency evacuation plan will be following up.

 All running equipment must put off.

 All people have to evacuate in the cross wind direction and calmly walk to the assembly area there on instructions will mount on the available transport, the transport will take all to a safe area.

 Every section will have a head count by section head or time keeper or check that any one missing or not.

 If anyone get hurt during explosion, gas leak, fire or accident, will be evacuated to the nearest medical center after giving first aid by qualified first aider or doctor.

 Emergency officer will give clear instructions of situation improved or all will be evacuated to a safe area.

 All work permits will become nullified during emergency automatically.

 During emergency an appointed Sr. staff/Sr. safety officer will take charge as an emergency officer.

 All will wait in the safe area until further instruction come from the emergency officer/KOC for either to return back to the work or to a safe area.

73. Enlist precaution to be taken prior to start the WELDING and GRINGDING works on the pipeline inside GC & why it is required? 
OR 
Explain Safety Precaution for a Hot Work? OR What are the safety precautions you will take for a hot work? Following precaution should be taken during Welding / Hot Work.

 Hot Work will start with a valid hot work permit.

 If it is inside GC or Refinery then need to cover the welding point with proper fire blanket.

 Frequent gas test to be carried out

 Wet the area with water and pressurized firewater hose to be kept near the hot work area.

 Combustible materials to be removed from welding point.

 Keep the certified and valid fire extinguisher near the hot work area.

 Trained and certified fire watcher should be present.

 Equipment, which will be used for hot work to be inspected before starting up the job.

 All welding machine must be connected with GFCI (Ground Fault Circuit Interrupter) or ELCB (Earth Leakage Circuit Breaker) and approved spark arrester.

 All welding machines must be ground with static-earthing device.

 All cable must be properly insulated and electrode holder, plugs and sockets must be in good condition.

 The equipment or pipe, spool should be supported on a secured and firm base during welding or grinding.

 All valves, flanges, drains, canals etc. where gas leaks or presence of flammable atmosphere is possible should be covered.


74. What are the Safety Precautions taken GAS WELDING & CUTTING?

 Any hot work will start with a valid hot work permit.

 Frequent gas test to be carried out.

 In a gas welding or cutting operations, the oxyacetylene flames shall be ignited by the lighter specially designed.

 The pressure regulators and gauges shall be suitable and in good working condition.

 The cylinder valve must be closed before the regulator is removed.

 Flash back arrestors should be fitted both end with the hoses to prevent flash back.

 The adequate ventilation must be provided to expel toxic gases/fumes, if activities carried out inside a tank / vessel / any confined space.

 All valves, flanges, drains, canals etc. where gas leaks or presence of flammable atmosphere is possible should be covered.

 Combustible materials to be removed from welding point.

 Valid Fire Extinguishers and Fire Watcher should be provided.

 When need to cover the welding point with proper fire blanket.

 When necessary, wet the area with water and pressurized firewater hose shall be provided.

 Equipment, which will be used for hot work to be inspected before starting up the job.

 All hose and cable, plugs and sockets must be in good condition.

75. What are the welding and cutting hazards? 

Welding & Cutting HAZARDS:

 Risk due to toxic gas & fumes generated while welding or cutting.

 Fire or explosion started by flame, sparks and hot material from the activities.

 Electrical shock from arc welding equipment.

 Burn hazard due to heat generated while welding or cutting.

 Weld bead particulars or slag entering unprotected eyes during chipping.

 Inhalation of welding fumes.

 Falling Gas cylinders.

 Radiation from UV and Infra-Red (flash eye).


76. What will be your action if someone informs you about accident?

 Ask him the location of the accident and the details.

 After reached the location analyze the situation, if someone get hurt during accident must be evacuated to the nearest medical center after giving first aid by a qualified first aider or doctor.

 Report to near fie station / Burgan fire station with clear location and details of the accident.

 Report to client HSE Specialist and concerned project manager.

 Investigate the accident and prepared an accident report with attached sketch and supporting documents and submit to client HSE Dept.

If the accident is major like Explosion / heavy fire / heavy gas leak then seek help from nearest fire station / Burgan fire station and follow up the evacuation procedure


77. What is the Pyrophoric Scale?

 Pyrophoric scale is actually Iron Sulphide (FeS2) which develops inside pipeline or piping system. It will readily ignite when exposed air/oxygen (Exothermic Reaction – i.e. heat releasing).

 Hydrogen Sulphide (H2S) or any Sulphur compound when it is react with iron it will form PyrophoricIron Sulphide.

 It is highly flammable even exposure to the air. The best way to handle is to douse it with water and keep it thoroughly wetted until safe disposal.

 In pipelines or equipments which carry gas or liquid and which contains Hydrogen Sulphide (H2S), Pyrophoric Scale or Iron Sulphide (FeS2) may be present.

78. What is EOD and what will be your responsibility if an EOD identified? 

EOD is Stand for Explosive Ordinance Disposal. Incase of an EOD identified or an unidentified object find, mark the area so as to relocate it, keep away all workers from the particular area. 

If possible detail a watchman and inform respective area fire station with clear details. Stop all activities at the location until cleared by KOC Ordinance Disposal Squad.



79. Define Lock out Tag out (LOTO) System?

 Lock out & Tag out is a process to block the flow of energy from the source and it will locked with lock system or padlock for not restore the energy and these should be tag on it, the tag will be as warning „do not operate‟.

 Locks and tags will be normally be removed only by the person who installed them whenever possible.

 Before lockout and tag out make sure that a valid isolation permit being obtained.


80. Define Chemical Hazard Identification Tag?

 Chemical hazard Identification Tag or Hazardous Material Classification Tag is a warning tag to inform that how much hazardous is the material contain e.g. fire, health, reactivity or specific hazard. 

 It is color coded, 

Red for fire, 

Blue for health, 

Yellow for reactivity and 

White for specific hazard like oxidizer, alkali, acid and corrosive etc.

Thanks for reading - Safety Interview Questions 8
Naitik Patel
Industrial Guide

Share this blog with your friends from here 👇

Previous Post Next Post