Topics: ASHRAE/CMR
1: R-11 belongs to Group
- B-3
- A-1
- B-1
- A-2
2: What is R-611’s ASHRAE Safety Code?
- A2
- C3
- B2
- B3
3: What type of copper is not permitted on refrigeration systems?
- Type M
- Type K
- Type N
- Type L
4: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
5: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 30 days
- 2 months
- 1 week
6: Doors communicating with outside from a mechanical room must be?
- Self-closing, approved, fire door
- Self-closing, aligned, fire door
- Steel, approved, weather-stripped
- Self-closing, wooden, fire door
7: Pressure vessels having an inside diameter of 6” or less shall be protected by
- either a fusible plug or a pressure relief device
- a fusible plug
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- a pressure relief device
8: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 7.00'
- 9.00'
- 7.25'
- 8'4"
9: 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
10: Indirect systems using Group II refrigerants
- shall be used in refrigeration system less than 1,000 lbs
- shall be used for mechanical equipment only
- shall be used in refrigeration system in excess of 1,000 lbs
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
11: The discharge relief valve is located (9.4.6)
- between the compressor and reciever
- between the compressor and the stop valve
- on top of the condensor
- between the compressor and oil separator
12: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
13: What refrigerant doesn't have to be classifted?
- R-134a
- R-711
- R-717
- R-718
14: What section governs pressure vessels?
- Section ASHREA 34
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
- OSHA
15: R-410A is classified as a ____ refrigerant on the safety matrix.
- B-2
- A-1
- B-1
- A-2
16: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
17: What is the definition of exit?
- Anywhere where a stairwell leads to outdoors
- The separated fire-resistant portion of a means of egress providing a protected travel path between the exit access and the exit discharge
- Any doorway or pathway unobstructed for access to anywhere considered safe
- Both a & b
18: B3 refrigerants are considered
- non-toxic but non-flammable
- toxic but non-flammable
- toxic and highly flammable
- non-toxic but flammable
19: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.
- 2.0
- 3.0
- 2.5
- 5.5
20: How many CFMs are required per square foot of commercial office occupied space
- 20 CFM
- 15 CFM
- 5 CFM
- .5 CFM
21: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
22: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?
- R-718 is not rated unlimited because it's a dangerous refrigerant
- Because it's a non-flammable refrigerant
- Because it's cheap
- Because it's water
23: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 25
- 15
- III
- 10
24: How much refrigerant can be stored in a mechanical room outside of the system?
- 150
- 200
- 330
- 100
25: What type refrigerant is NOT ozone depleting?
- CFC
- Halon
- HFC
- HCFC