Topics: ASHRAE/CMR
1: 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
- shall be prohibited
- containing R-11, R-123 & R-717 exclusively shall not be prohibited
- shall not be prohibited
2: R-22 is considered a(n)
- HFC
- CFC
- HCFC
- HCFCH
3: Large mercantile occupancy is
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
4: What type of copper is not permitted on refrigeration systems?
- Type M
- Type L
- Type N
- Type K
5: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
6: R-123 belongs to Group
- B-3
- B-1
- A-3
- B-2
7: 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
8: What is the minimum height refrigeration piping should be placed against walls?
- 72"
- 7.25'
- Ceiling height
- 6'
9: Fusible plugs shall not be used with pressure vessels of
- 3 cubic feet or less
- 15 square feet or less
- 15 cubic feet or more
- 3 cubic feet or more
10: Class A refrigerants are considered
- toxic
- flammable
- non-toxic
- non-flammable
11: There can be no airflow from an occupied space through a machine room unless what?
- System is high velocity
- System is ducted and sealed
- Duct is not located in the ceiling
- None of the above.
12: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 330
- 1,000
- 110
- 6.6
13: Defined process piping by code CMR (528)
- Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
- Any piping in an industrial space
- Any piping in an industrial or commercial space
- All of the above
14: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 1000F
- 600F
- 700F
- 800F
15: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 2 months
- 30 days
- 1 week
- 14 days
16: B3 refrigerants are considered
- toxic but non-flammable
- non-toxic but non-flammable
- non-toxic but flammable
- toxic and highly flammable
17: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
18: A class A3 refrigerant is considered
- toxic and non-flammable
- non-toxic but highly flammable
- non-toxic and non-flammable
- toxic and somewhat flammable
19: What section governs pressure vessels?
- Section 8 ASHREA 15 ASME unfired
- OSHA
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
20: A relief valve discharge capacity is rated in
- temperature minus pounds of air per second divided by release rate squared
- PSIG
- PSIA
- Pounds of air per minute.
21: Ammonia (NH3) is a group III refrigerant
- True
- False
22: How many different groups of refrigerants are there?
- 11
- 7
- 15
- 3
23: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
24: A professional or office building would be considered what type of occupancy?
- business
- public assembly
- mercantile
- commercial
25: How many groups of refrigerants are there?
- 1
- 3
- 7
- 5