Set a circle around the correct answer 1. The observer defined as competent person responsible for maintaining a register of entry / exit of personnel during work in confined space and ensuring communication with the personnel in confined space, emergency response Team, main Control Room. A. True B. False Explosion or combustion will not occur if concentration of flammable gas or vapors is above LEL. 2. A. True B. False Gas filter mask is an air supplied respirator and shall be used for Rescue. 3. A. True B. False 4. Acceptable O2 concentration lies between 18.5% and 22.5% A. True B. False Oxygen deficiency may be caused by Oxygen displacement by other gases and vapors, such as 5. inert gases A. True B. Faise With Oxygen levels above 23%, it Becomes very easy to start a fire 6. A. True B. False 7 If the flammability reading shows 15% LEL it is safe to work: A. True B. False 8. Are Authority (AA) can decide the maximum number of personnel permitted to enter in Confined Space certificate. A. True B. False 9. Authorized Gas Tester shall ensure that Gas Monitors are inspected, calibrated, bump tested prior to use in accordance with manufacturer's recommendation. A. True B. Faise 10. Hazards in confined spaces are: A. Mechanical Hazards. B. Electrical Hazards C. Physical Hazards D. Chemical Hazards E. All the above 11. Life Saving Rules (LSR's) could be directly or indirectly refer to confined space entry A. True B. False 12. Authorized Entrants enters the Confined Space only when designated by the Job Performer (JP). A. True B. False 13. Positive (Mechanical) Isolation shall always be used for work involving Confined Space entry. A. True B. Faise 14. A confined space can be: A. Storage tanks. B. Large pipelines. C. Process Vessels D. All of the above. 15. Oxygen deficiency may be caused by the following A. Oxygen displacement by other gases and vapors. B. Oxygen consumption through rusting metals (oxidation). C. Oxygen absorption or adsorption. D. All of the above. 16. All sources of static discharges shall be excluded if there is a risk of a flammable or explosive atmosphere in the Confined Space. A. True B. False 17. Physical Hazards Cause harm to the body but not limited to noise, engulfment, slippery surface, trif hazards, lighting, radiation, vibration, extreme temperature and pressure. A. True B. False 18. Deaths often occur during rescue when employees attempt to rescue an entrant without the proper training and then get caught themselves in the confined space. A, True B. False 19. Confined Space Entry Certificate is not required in restricted area when excavation depth 2 meter. A. True B. False 20. Observer must enter the Confined Space with entrants. A. True B. False 21. Entering a Confined Space can prove fatal for an employee when the oxygen level is below 19.5% A. True B. False