Topics: ASHRAE/CMR
1: What would be the classification of a church?
- Large mercantile
- Institutional
- Industrial
- Place of assembly
2: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 550
- 100
- 350
- 50
3: R-123 belongs to Group
- B-1
- B-3
- A-3
- B-2
4: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 1 week
- 30 days
- 2 months
5: Refrigerants shall be classified by
- maximum permissible quantities of each group
- color codes
- requirements for commercial, industrial, and residential occupancies
- toxicity and flammability
6: What would be the classification of a prison?
- Institutional
- Place of assembly
- Industrial
- Large mercantile
7: What must be done to refrigerant pipes before being buried?
- Coated
- Encased
- Leaked checked
- Certified
8: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into
- the low-pressure side of the system
- the high side of the system
- the liquid receiver
- both a and c are correct
9: NH3 is
- ammonia
- lithium bromide
- R-508A
- R-718
10: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 5
- 3
- 1
- 2
11: How many gallons of water per pound of ammonia do you need?
- 20
- 1
- 5
- 15
12: High pressure controls should be set no higher than
- 10% of set point
- 80% of set point
- 90% of set point
- 25% of set point
13: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
14: What kind of material can't be used on the outlet of a relief valve?
- PVC
- Aluminum
- Stainless Steel
- Copper
15: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the outdoors
- the return air ducted system
- the mechanical room housing the refrigeration system
- Machinery rooms need not be vented
16: 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
17: 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
18: What must be done if refrigeration lines pass through a concrete floor?
- installed through a pipe casing
- insulated
- moisture barrier
- leak checked
19: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 55
- 50
- 75
- 15
20: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
21: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
22: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or less
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or less
- vessels of 3 cubic feet or more
23: When can recovered refrigerants be reused?
- They can't
- Only when used in original owner's equipment
- Only if used in 30 days of recovery
- None of the above
24: What section governs pressure vessels?
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
- OSHA
25: What type of copper is not permitted on refrigeration systems?
- Type M
- Type N
- Type L
- Type K