NFPA 99 Practice Questions and Correct Answers A+ Graded

NFPA 99 Practice Questions and Correct Answers A+ Graded 1. After completion of all installer perform tests which of the following methods shall be used to determine that no cross connection exist? A) individual pressurization. B) pressure differential. C) both A&B. D) either A or B. - ANSWER D) either A or B. It is either individual pressurization or pressure differential 2. When testing outlets / inlets, you must use which of the components? A) gas specific adapters described by the manufacturer. B) your changeable outlet / inlet adapters. C) miscellaneous fittings as required. D) o rings / seals. - ANSWER A) Gas specific adapters described by the manufacturer 3. Openings for medical gas work she'll be kept separate from other tools, and kept free of grease or oil. If cleaned, only degrees are such as blank is permitted? A) the natural citrus solvent cleaner / degreaser. B) group or gojo hand cleaner. C) trisodium phosphate or sodium carbonate. D) water. - ANSWER C) Trisodium phosphate or sodium carbonate 4. ASSE 6000 annex J provides "recommended guidelines for conducting planned medical gas system shutdown and temporary backfeed" annex j. guidelines do not include a list of responsibilities for what type of workers? A) installers. B) Medical Gas generalist. C) shutdown coordinator. D) verifier. - ANSWER B) Medical Gas generalist 5. According to the NFPA, an oxygen enriched atmosphere is one where the concentration of the oxygen exceeds what percentage? A) 23.5%. B) 25.5%. C) 30%. D) 99%. - ANSWER 23.5% 6. In assembly of equipment that holds the capacity of oxygen greater than blank is defined as bulk oxygen system? A) 3000 foot. B) 10000 foot. C) 20000 foot. D) 28000 foot. - ANSWER D) 20000 foot 7. What is true a category 1 support gases? A) permitted to power medical / surgical tools. B) subject to greater hazards then present in other piped gases. C) use for respiration. D) both A) and C) - ANSWER A ) Permitted to power medical / surgical tools 8. Station outlets / inlet shall be identified as what for the specific gas? A) chemical symbol. B) name. C) name or chemical symbol. D) piping type. - ANSWER C) Name or chemical symbol 9. Under which of these conditions shall the instrument Air Reserve header cylinders be permitted to be stored with the instrument air compressor? A) the mechanical equipment room does not contain a boiler. B) the medical air compressors are in the same room. C) the only motor-driven machinery in the room is for instrument air equipment. D) the room is secured with lockable doors. - ANSWER C) The only motor-driven machinery in the room is for the instrument air equipment 10. Riser valves are those valves located where? A) adjacent to the main riser downstream of any zone valve. B) anywhere in the lateral branches of the piping system. C) in the mainline adjacent to the base of the riser. D) in the riser adjacent to the mainline. - ANSWER D) In the riser adjacent to the main line 11. When is the initial pressure test conducted by the installer? A) after blowdown of the distribution piping. B) after installation of alarm sensors. C) before blowdown of distribution piping. D) before installation of station rough in assembly. - ANSWER A) After blow-down of the distribution piping. 12. In those portions of systems intended to handle oxygen at pressure greater than 350 psi the inter connecting hose shall not contain what materials? A) brass. B) copper C) polymeric D) stainless steel - ANSWER C) Polymeric 13. The tool shown here allows the installer to mechanically limit the makeup depth of the fitting to be brazed. Under what condition is this method permitted for the installation of medical gas piping? A) only on final line connectors. B) only on vacuum systems. C) where only B cup 5 brazing rod is used D) where the limited makeup depth is not less than minimum cut depth her ANSI / ASME recommendations - ANSWER D) Where the limited makeup depth is not less than minimum cup depth current ANSIASME recommendation 14. What is the standard gauge pressure for nitrogen gas service? A) 15 - 30 B) 50 - 55 C) 162 185 D) it varies with system type. - ANSWER C) 50 - 55 psi 15. What is a NFPA 99 requirement for labeling of pipes in medical gas system? A) color coding B) fixed label with C) label shall wrap completely around pipe. D) reflective label - ANSWER A) Color coding 16. A wireless communication device is employed in a medical gas or vacuum warning system. what type of supervision is required for this device? A) a visual indicator Shelby located in maintenance officer or engineering department. B) this device shall be installed at the medical gas or vacuum source. C) this device shall be located at nurses station. D) this device will be supervised such that failure communication shall initiate an alarm. - ANSWER D) This device will be supervised such that failure of communication shall initate an alarm 17. In a facility where Medical Gas vacuum systems are present and the failure of such equipment or systems is likely to cause any major injury or death to patients or caregivers this system shall be designed to meet which category requirements? A) 1 B) 2 C) 3 D) 4 - ANSWER A) category 1 18. A faculty is in the planning stages of installing an emergency oxygen service connection (ESOC). How many feet is the minimum amount of clearance required around this connection? A) 1 foot B) 3 feet C) 5 feet D) Clearance must be 1-1/2 times the width of the auxiliary. - ANSWER B) 3 feet 19. Wooden rack for cylinder storage may be permitted under which conditions? A) the wooden must be painted. B) they are permitted with no set conditions . C) they must be located in an area with fire suppression system. D) Wooden racks are no longer permitted - ANSWER D) Wooden racks are no longer permitted