SAFETY OFFICERS QUALIFICATION TEST QUESTIONNAIRE 1.
What is the % of oxygen in atmosphere? Ans. 21 or 20.8 %
2.
How can we ensure the ventilation in confined space? Ans. By Air Movers and Exhaust Fans.
3.
What are the safety requirements of welding job? Ans. fire extinguishers water hose
gas test welding gloves & mask
4.
What are the hazards in 1.0 confined space and 2.0 welding? Ans. Confined Space Welding 1.1 Low & high oxygen % 2.1 Fire & explosion 1.2 Engulfment 2.2 Electric Shock 1.3 Toxic and flammable gases 2.3 Toxic gases 2.4 Heat burn
5.
Define JSA and explain? Ans. Job Safety Analysis - is a process used to review task steps, identify hazards and develop control measures. Steps of JSA Or 1. Splitting the job into steps 1. Eliminate the hazards 2. Analyzing the potential hazards 2. To know step by step of the job 3. Recommending the safe guards / PPEs 3. Attachment of permit
6.
What are the types of Accidents? Ans. Class – A, B, C & D
7.
Explain the near miss reporting system in PK? Ans. Entering in AMAN system Correct on the spot
8.
9.
Explain the emergency response procedure in PK? Ans. Stop work & Equipments Go to the nearby emergency assembly point
Report to the Supervisor
Do head counts Come to the site after all clear alarm sounds
What is Injury Rate? Ans. IR = Total no. of recordable injuries X 200000 Total man hours worked
10. What is Severity Rate? Ans. SR = Total no. of days lost X 200000 Total man hours worked 11. What is a Vapor and the monitoring or controlling systems of Vapor Cloud in PK or how to remove it? Ans. 1. Vapor is air mixtures that can ignite or burn only within a specified range of composition. 2. Control System :- Gas monitoring (detecting) and deluge (dilution) system - sprinkle
12. What is the meaning of red barricade? Ans. Danger; not allowed to cross. 13. What is TLV and how much the TLV of chlorine? Ans. Threshold Limit Value is the maximum concentration of a chemical a worker can be exposed 8 hours day after day without any bad effect on his body. TLV = 0.6ppm 14. What is IDLH? Ans. Imminent Danger to Life and Health by unsafe condition and toxic materials. 15. What are things needed for lifting? Ans. TUV certification for crane & riggers Load chart Lifting Plan
Barricading to the area Fire extinguishers Grounding cable
16. How do you inspect the Scaffolds? Ans. By its inspection tags and visual inspection based on ARAMCO standard. 17. What is the maximum voltage can use for lightings & power tools in confined space? Ans. Lighting = 24V, Power tools = 110V 18. What is LEL? Ans. Lower Explosion Level (lowest concentration of flammable gases to get fire) 19. What is SWL? Ans. Safe Working Load 20. What are there in gas test results? Ans. Oxygen Level =20.8% LEL (Flammables) = 0%
TLV (Toxic gases) = 0%
21. How much is the acceptable range of O2 in confined space with precaution? Ans. 19.5 to 23.5 22. Standby man can enter into confined space for rescue? Ans. No, he is not allowed for rescue, he can call help from others & ERT 23. What are the preparations to be done for excavation? Ans. Permission from utility department Excavation permit Waste material to be kept away 1meter from excavation
Access to go IN and OUT by proper ladder Shoring of the excavation by proper means
24. When will the excavation coming under confined space? Ans. Excavation reaches 1.2 meter / 4 feet depth or more. 25. Responsibilities of a safety officer? Ans. Implement the safety standard at site. Conduct work site daily safety inspection and observation. Conduct safety orientation and trainings. Maintain safety record-keeping including safety meetings and safety reports, incident and injury reports.
26. What is confine space? Ans. Limited access and restricted means by entry and not design for human occupancy. 27. What is flash point? Ans. It is the minimum temperature at which a liquid gives off vapor in sufficient concentration to form an ignitable mixture with air near the surface. 28. How inspect chain block? Ans. Hook Safety latch 29. Permit System of Petrokemya. Ans. Class A Use of high energy ignition sources; Welding or cutting, open flame heating (soldering). Confined space entry. Hot Tapping. Electrical Repair; repair on live circuits 50V – 240V. Electrical Troubleshooting; above 480V.
Chain Head
Class B Use of low energy ignition sources; Hack saw and grinders Hammer wrenches Electrical repair/ Troubleshooting; below 50V. Control of Radioactive Material. Vehicle operation; unpaved areas, crane, winch truck.
Excavation
Class C Erection/ Removal of scaffolding Insulation Painting; brush Housekeeping Routine Instrument repairs Machine monitoring 30. Steps or preparation for confine space? Ans. Equipment Shutdown Isolation (Lock, Tag, Clear & Try) SINGLE BLOCK VALVE An isolation method for routine maintenance activities and which is least desirable process for use in hydrocarbon service. (e.g. Changing a gauge or sock filter, temporary isolation while a blind is being installed or cleaning of inline strainers). DOUBLE BLOCK AND BLEED (DBB) An isolation method for locking and tagging two consecutive valves on the same line with a drain valve installed and open for bleeding. (e.g. Removing a control valve). DISCONNECTION / PHYSICAL ISOLATION OR SEPARATION / REMOVAL A less frequent isolation method for long term maintenance activities by physically removing a piece of equipment from the system. (e.g. Remove a spool from a pipeline). BLINDING / BLANKING An absolute closure of a pipeline or duct, by fastening across its bore with a solid plate or cap which extends to the outer edge of the flange at which it’s attached and capable of withstanding the maximum upstream pressure. (e.g. Blind Flange, Slip Blind, Spectacle Blind, Stand-off Blind, Plumbers Plug & Hammer Blind). PHYSICAL RESTRAINT / CHAIN VALVES An isolation method by physically restraining, blocking or securing the movement of the equipment. (e.g. Disconnect belt, and chain drives and mechanical linkages on shaft-driven equipment, securing mechanical moving parts within a confined space with latches, chains, chocks, blocks or other devices. Pin a fly wheel from moving; secure a fan blade from moving).
ELECTRICAL ISOLATION (Qualified Electricians) An isolation method to de-energised or physically turn off and disconnect machinery or equipment from the energy source by a competent and qualified personnel. (e.g. Open breakers, Remove fuses & Disconnect wiring). LOCKOUT & TAGOUT (LOTO) A method to safe guards the employees from the unexpected energization or startup of machinery and equipment. (e.g. Install approved and identifiable lock and tag by every individual working on the equipment). De-pressurize / De-energize Decontamination Draining Flushing Cleaning Purging (Water Washing, Steaming, Nitrogen) Ventilation (Ventury, Exhaust Fan, Ventilator / Air Mover) Gas Test Maintenance Activities
