Topics: ASHRAE/CMR
1: How far from the window does a relief valve need to be according to ASHRAE-15?
- At least 30'
- There is no minimum for relief valve and windows.
- At least 20'
- At least 40'
2: What type of material can't be used on the outlet of a relief valve?
- PVC
- Stainless steel
- Magnesium alloy
- Copper
3: How many refrigerant classifications are there for toxicity?
- 1
- 3
- 5
- 2
4: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 30 days
- 2 months
- 1 week
- 14 days
5: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
6: A hotel is considered a _______ occupancy.
- mercantile
- institutional
- residential
- commercial
7: A class B2 refrigerant is considered
- non-toxic and non-flammable
- non-toxic and highly flammable
- toxic and somewhat flammable
- toxic and non-flammable
8: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 22
- 18
- 33
- 50
9: When a refrigeration or air conditioning system is installed
- it shall be approved by the owner for proper operation.
- it shall not be operated below prescribed pressures
- the form of certificate shall be authorized by the Department of Pubic safety
- a field inspection shall be made before it is put into service
10: Ammonia is under what safety classification?
- B3
- B1
- B2
- A3
11: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
12: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
13: What is the intention of the word “should” as used in the code?
- A mandatory requirement
- A recommendation or advisory guideline
- A technician’s choice of how it should be done
- None of the Above
14: A Category D fluid
- is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
- is when the design pressure does not exceed 150 psi
- a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
- Both a and b are correct
15: What is the refrigerant chlorodifluoromethane?
- R-22
- R-134a
- R-123
- R-12
16: How many groups of refrigerants are there?
- 1
- 7
- 5
- 3
17: The color code of a tank of ammonia is
- lavender
- silver
- white
- light green
18: When should a relief valve start to function?
- Two times it's working pressure
- At it's set pressure
- Before the purge station discharges
- 10 psi before it's set pressure
19: R-11 belongs to Group
- A-2
- B-1
- A-1
- B-3
20: What is the refrigerant dichlorodifluoromethane?
- R-123
- R-12
- R-134A
- R-22
21: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 15
- 20
- 50
- 75
22: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- higher
- the same
- lower
- there is no Group B1 refrigerants
23: A relief valve discharge capacity is rated in
- PSIG
- Pounds of air per minute.
- PSIA
- temperature minus pounds of air per second divided by release rate squared
24: Indirect systems using Group II refrigerants
- shall be used in refrigeration system in excess of 1,000 lbs
- shall be used for mechanical equipment only
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
- shall be used in refrigeration system less than 1,000 lbs
25: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
- Section 8 ASHREA 15 ASME unfired
- OSHA