Topics: ASHRAE/CMR
1: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
- there is no Group B1 refrigerants
- higher
- lower
- the same
2: How many gallons of water do you need per pound of ammonia?
- 10
- 50
- 1
- 100
3: What refrigerant doesn't have to be classifted?
- R-711
- R-717
- R-134a
- R-718
4: Refrigerant restricted in 2004 but used for transition for decades:
- R-123
- R-22
- R-134A
- R-11
5: What does safe access mean?
- Locked doors
- A clear unobstructed path to the equipment and controls
- OSHA approved
- Well-lit exit signs
6: What type of copper is not permitted on refrigeration systems?
- Type M
- Type L
- Type K
- Type N
7: Most CFC's are
- flammable
- inert but toxic
- toxic
- inert
8: What is a Category "M" fluid?
- A typical refrigerant used on newer air conditioning and heat pump systems
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
- Any fluid that exceeds 150 psig and has design temperatures over 366F
9: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 800F
- 700F
- 600F
- 1000F
10: Which refrigerant class listed below is the most flammable?
- B-2
- A-1
- C-3
- A-3
11: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
12: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 44 lbs
- 13.9 lbs
- 22 lbs
- 6.6 lbs
13: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- OSHA
- Section 8 ASHREA 15 ASME unfired
- Section ASHREA 34
14: 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.
- ammonia
- Lithium bromide
- HCFC-123
- CFC-11
15: When must refrigeration system covered by the code be inspected?
- Upon installation
- Not required
- Annually and when installed
- Annually
16: Who approves containers for refrigerants?
- D.O.E
- D.O.D
- D.O.T
- E.P.A
17: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 10
- 24
- 15
- 18
18: A class B2 refrigerant is considered
- toxic and non-flammable
- non-toxic and highly flammable
- non-toxic and non-flammable
- toxic and somewhat flammable
19: The main purpose of a refrigerant detector in a machinery room is to
- inform there is a refrigerant leak int he system
- detect toxins in the air caused by a refrigerant leak
- to set off an alarm when there is refrigerant present inside the room
- all of the above
20: The certificate of inspection
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be posted and protected from dirt, water, and other elements
- shall be posted on the compressor shell or electrical panel at the unit
- shall be authorized by a notarized insurance company
21: R-22 is considered a(n)
- HCFCH
- HCFC
- CFC
- HFC
22: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- OSHA
- Section 6 ASHRAE-34 ASME VIII unfired
23: Ammonia (NH3) is a group III refrigerant
- True
- False
24: B3 refrigerants are considered
- toxic and highly flammable
- non-toxic but flammable
- non-toxic but non-flammable
- toxic but non-flammable
25: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-22
- R-11
- R-113
- R-12