420 Welcome to your work permit receiver saudi aramco questions and answers let's get start Name Email 1. Equipment is isolated to make sure that it cannot be... Taken to a shop for repair Shutdown by accident Shutdown on purpose Started‐up, leak or cause electrical shock None 2. Who from the work crew install locks? The Foreman and the receiver Every member of the crew The issuer and the gas tester One member of from each working crew None 3. Why do we install tags as well as locks? To list safety precautions To recover purging cycle To record a gas test To explain why the lock is installed None 4. When the operation person installs the padlock to the switchgear, what should he do? Ensure that the unit is isolated Check the switch again to make sure that it is correct unit Work safely None of above None 5. What would the issuer requires when welding in service hydrocarbon equipment? Fire watch Fire department Fire blanket Fire station None 6. Does every work permit require sign that gas test is conducted? Only in the area where hydrocarbon is present Yes , all type of work permit require gas test No Only confined space entry permit None 7. What is one hazard with doing hot work? Flash point Ignition source Vapour pressure Cold work None 8. On which reading of LEL, entry is not permitted in confined? 0.05 LEL 10% LEL and above (0.1 LEL) 0.5 LEL 50 % LEL None 9. What is oxygen deficiency? Too much oxygen Lower than normal (20%) amount of oxygen High than normal amount of Hydrogen Sulfied Oxygen that is not pure None 10. At which level of oxygen breathing apparatus is required? Less than 20% Less than 10% At 25% Greater than 15% None 11. When a fire watch be required? For any hot work permit Whenever a fire could occur For high risk job When a gas test are over %LEL None 12. For isolation locks, how many keas for one as lock? 3 for each lock One for issuer and one for receiver As many crew members One only None 13. Equipment is isolated to make sure it cannot be... Start‐up leak or cause electric shock Slip trip or fall Shutdown by accident Taken to shop for repair None 14. When preparing equipment for maintenance work, the issuer must make sure it is... Electrified isolated and shutdown De‐energized with power turned on Shutdown, isolated and de‐energized Isolated repaired and certified None 15. Who should be the first organization to install locks and tags? Construction Operations Maintenance Receiver None 16. Two common methods of cleaning process equipment are.... Treating and clarifying Water wash and steaming Purging and gas testing Streaming and gas testing None 17. When receiver smells a gas, what should he do? Continue work and conduct gas test by himself Inform safety department Stop work and inform issuer to conduct gas test Report to the loss prevention None 18. What information must the gas tester enter in the work permit? Name badge number and test result Test result, normal gas readings and sign Gas test result and time of gas test Gas test result, badge number and sign None 19. Removing fuses from electric circuit or disconnecting electrical wiring is an example of what? Isolating electrical equipment Locking electrical equipment Cleaning electrical equipment Purging electrical equipment None 20. Who can remove a lock forcefully? Supervisor of working crew Operation’s shift superintendent or foreman Person who install lock can remove it only No one can remove a lock once it is installed None 21. What should be done is O2 level is less then 20%? Division head must sign the permit Breathing apparatus must be used and division head must sign the permit Breathing apparatus must be used Work can be continued without use of breathing apparatus None 22. What happen to the operations lock and tags installed on equipment when operators changes shifts? The lock and tag must be changed The key are usually transferred to new shift The tag must be changed The lock must be changed None 23. For welding activity, portable fire extinguisher shall be available within.... Not required for welding job 7.5 m (25 ft) 23 m (75 ft) 3 m (10 ft) None 24. The issuer tries to start‐up equipment at the field switch after it has been isolated and before work start to make sure? The receiver’s tag is installed It has been purged and cleaned There is no gas in the area It cannot accidently start None 25. On what level of oxygen, no work is allowed? Any reading above 23.5% None of there 22.8% 16.5% None 26. Is there any condition when a lock can be forcefully removed? When any one need to start or energize that equipment When, who install lock, his supervisor or superintendent cannot be contacted It cannot be removed forcefully When work permit is finished None 27. Which non‐flammable material is commonly used to purge process equipment? Nitrate Nitrate Oxide Nitrite Nitrogen None 28. When the operation person has been isolated the unit and install padlock? Do the job quickly Get tools and start work Receiver will install his lock They can start the job with instructions of foreman None 29. What are the methods of isolation? Remove piping and install blind Shutdown and clean Install lockout and take gas test Install tag and purge None 30. On which reading of gas test, breathing apparatus must be used? CO is 500 ppm LEL 8% All of Above O2 18.5% None 31. Which one is applicable for H2S Readings? All of Above 10 ppm or above breathing apparatus must be used 10 ppm to 100 ppm division head must sign the permit Above 100 ppm No work (confined space entry) allowed None 32. What is checked in a gas test? Oxygen, flammable and toxic gases Flammable gas, inert gas and heavy gas Oxygen level Oxy‐acetylene, water vapours None 33. Why it is necessary to know the direction of wind? To ensure that wind will not blow into ignition source To prevent sand from entering into open valve None of above To prevent garbage and dirt to enter at work area None 34. What should be check/conformed before removing a lock forcefully? Personnel and facilities are safe from injury or damage Work permit is expired Lock can be removed without any checks or precautions All workers are in rest shelter None 35. LOTO system, how many padlocks are required to be put on for 4 different contractors? 5 4 6 Only one None 36. Who can remove lock once installed? Foreman of the working crew One who install lock / lock owner (mentioned on tag as lock owner) Anyone who want to start the equipment No one can remove it once it is locked None 37. Installing locks and tags o electrical breakers prevents accidental... Blind installation Nitrogen release Purging equipment Start‐up of equipment None 38. On which level of LEL, breathing apparatus is required to use? 0.05 LEL(0.05) and above 10% At 0.0 LEL 0.5 % and above None 39. If only issuer and receiver (one group) is involved in an activity which needs isolation, how many locks are required? No lock is required 2 1 3 None 40. What do we call the person who is required to be at a job site, because of a special skill he has? Standby man Certified Designated representative Competent person None 41. During welding operation where will be your fire extinguisher be located? With welder On welding machine Upwind position Downwind position None 42. Fire watch must know how to... Operate process equipment Take gas test Operate fire equipment given to him Be a receiver None 43. In a confined space entry, what is the most important thing to do? Insure that space is isolated Non sparking tools will be used Gas release can be made safely Get a hot permit None 44. Which work permit requires sewers to cover up to 75 ft? No work permit have such requirement Confined space entry permit Hot work permit Cold work permit None 45. What must the fire watch be? Trained Certified An issuer A receiver None 46. The reason equipment must be de‐energized and de‐pressurized before work is started is because? Electricity can be wasted People can be injured Lock and tags will be lost Gas can be wasted None 47. Confined space entry is not allowed if... CO is 1000 ppm LEL 10% H2S is above 100 ppm All of Above None 48. What must operation do before removing their locks and tags? Clean and purge the breaker Take gas test and restart equipment Make sure the equipment can be safely started Make sure the equipment is gas free None 49. Removing fuses from an electric circuit or disconnecting electric wiring is an example of... Cleaning Locking Purging Isolating None 50. Hot work is allowed if the gases and vapour are measured what reading of LEL? Above 0.0% 0.05% 10% Below 0.5% None 1 out of 10 Share 0 FacebookTwitterPinterestLinkedinRedditWhatsappTelegramEmail previous post Saudi Aramco & Sabic Work Permit Receiver Question Answers next post WPR MCQs 2025
