Topics: ASHRAE/CMR
1: 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
2: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 660 lbs
- 55 lbs
- 550 lbs
- 330 lbs.
3: No open flames are allowed in the machinery room unless?
- Approved by the authorized person
- Never can be allowed
- Approved by the installing contractor
- Only when combustion air is provided from outside of the machinery room
4: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-113
- R-12
- R-22
- R-11
5: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- does not require a pressure-limiting device
- shall have a pressure limiting device installed on the high side of the system
- shall have a pressure limiting device and a pressure relief valve installed
- shall be inspected by the Boiler of Inspectors bi-annually
6: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
7: Class T machine room
- shall include closets used for setting equipment
- shall have refrigerant leak detecting systems installed inside and outside the room
- has no flame producing apparatus permanently installed
- shall have remote controls to stop the action of the refrigerant compressor
8: Can ammonia be used on domestic system?
- yes, for systems under 10 tons
- no
- yes
- no, unless there is proper ventilation system installed
9: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
10: All electrical work done on refrigeration systems must comply with
- Department of Energy
- ASHREA-15 Section 9.2.1
- NEC and Massachusetts Modifications
- OSHA
11: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
12: Can you use Ammonia in industrial applications?
- When mixed with R-718
- No, never
- Yes, always
- Yes, Under certain condidtions
13: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 700F
- 600F
- 1000F
- 800F
14: Who approves containers for refrigerants?
- D.O.T
- E.P.A
- D.O.E
- D.O.D
15: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 75%
- 90%
- 99%
- 80%
16: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
17: 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
18: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of
- the ASME Boiler and Pressure Vessel Code
- Section 11.3.1.5 ASHRAE 15 Standard
- the ANSI Standard 10.7.2
- both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5
19: The Board of Boilers adopts by reference
- the MACS Pressure Vessel Code of Massachusetts
- the 1997 ANSI/ASHRAE Safety Code
- Montreal Protocol Safety Code
- MSCA Code
20: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
21: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 660 lbs
- 330 lbs
- 500 lbs
22: Pressure relief valves shall be marked with the data from
- Section XIII Division of the ASME Boiler & Pressure Code
- Section IV Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section VIII Division of the ASME Boiler & Pressure Code
23: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or more
- vessels of 10 cubic feet or less
- vessels of 3 cubic feet or less
- vessels of 3 cubic feet or more
24: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 13.9 lbs
- 44 lbs
- 22 lbs
- 6.6 lbs
25: How are refrigerant blends classified?
- Based on the oil used
- Based on best case Fractionation
- Blends don't have to be classified
- Based on worst case fractionation