Topics: ASHRAE/CMR
1: What is Trichlorotrifluoromethane?
- R-12
- R-113
- R-13
- R-11
2: What type of copper is not permitted on refrigeration systems?
- Type K
- Type L
- Type N
- Type M
3: Fusible plugs shall not be used with pressure vessels of
- 3 cubic feet or more
- 15 cubic feet or more
- 15 square feet or less
- 3 cubic feet or less
4: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 15
- 50
- 75
- 20
5: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
6: A pressure relief should be located at least _______ from windows and doors.
- 25'
- 15'
- 30'
- 20'
7: What is the refrigerant dichlorodifluoromethane?
- R-134A
- R-22
- R-123
- R-12
8: The main cause of enacting the "no vending rule" of July 1st 1992 was
- global warming potential
- ozone depletion
- both a & b
- None of the above
9: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- boiler
- outside the machinery room
- evaporator
- compressor
10: Name three things that must be done when changing refrigeration lubricant?
- Place sign, check for leaks, insulate
- Nothing must be done
- Make sure it's compatible, notify owner, notify AHJ
- You can't change lubricants.
11: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Muffler
- Stop valve
- Foot valve
- Moisture indicator
12: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 330 lbs
- 660 lbs
- 500 lbs
- 55 lbs
13: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 550 lbs
- 660 lbs
- 55 lbs
- 330 lbs.
14: _____ and its alloys are suitable for use with ammonia systems.
- Zinc
- Aluminum
- Copper
- Magnesium
15: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class T machinery room
- Class M machinery room
- Class B machinery room
- Class A machinery room
16: What type of relief valve is used on a CO2 system?
- fusible plug
- glove disc
- gate valve
- rupture disc
17: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- HCFC-123
- Lithium bromide
- CFC-11
- ammonia
18: When should a relief valve start to function?
- At it's set pressure
- 10 psi before it's set pressure
- Before the purge station discharges
- Two times it's working pressure
19: Ammonia is under what safety classification?
- A3
- B2
- B1
- B3
20: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.
- of Group B2 refrigerant shall be prohibited
- containing R-11, R-123 & R-717 exclusively shall not be prohibited
- shall not be prohibited
- shall be prohibited
21: What section of ASHRAE-15 governs pressure vessels?
- Section 7 ASHRAE-15 ASME VIII fired
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 6 ASHRAE-34 ASME VIII unfired
- OSHA
22: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there are sprinklers above
- When its white
- When there is a space 6' or more above it
- When it's used as part of a supply or return air system
23: How many groups of refrigerants are there?
- 5
- 7
- 1
- 3
24: Halo-carbon refrigerants cannot be used with what material?
- Copper
- Magnesium alloy
- Aluminum
- Stainless Steel
25: All machine rooms must be outfitted with a detector that _______?
- activates an audible alarm
- activates a visual alarm
- starts the ventilation system
- All of the above