Topics: ASHRAE/CMR
1: 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
2: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
3: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- outside the machinery room
- boiler
- evaporator
- compressor
4: Doors communicating with outside from a mechanical room must be?
- Self-closing, aligned, fire door
- Self-closing, wooden, fire door
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
5: Refrigerant restricted in 2004 but used for transition for decades:
- R-123
- R-22
- R-134A
- R-11
6: A declaration test is needed when the system contains more than
- 65 lbs
- 55 lbs
- 110 lbs
- 120 lbs
7: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.
- 110
- 80
- 90
- 100
8: How many gallons of water per pound of ammonia do you need?
- 5
- 20
- 15
- 1
9: Where must a refrigeration contractor's license number be displayed?
- Uniforms, checks, and invoices.
- Trucks, invoices, and advertising
- Trucks, license plates, and uniforms
- Truck, office, every job, and on all equipment
10: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
11: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- no flames shall be permitted
- the owner shall be informed
- gas masks must be worn
- explosion precautions must be taken
12: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 2.2
- 1.2
- 1.5
- 1
13: R-123 belongs to Group
- B-1
- B-2
- A-3
- B-3
14: Where are the three places that the discharge from an ammonia relief valve be piped?
- atmosphere, tank containing water, where the A.H.J. indicates
- underground, into drain, into mechanical room
- to chemical neutralizing tank only
- none of the above
15: How many gallons of water do you need per pound of ammonia?
- 10
- 50
- 100
- 1
16: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
17: How many refrigerant classifications are there for flammability?
- 3
- 2
- 7
- 1
18: 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
19: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
20: A class A3 refrigerant is considered
- non-toxic but highly flammable
- toxic and non-flammable
- toxic and somewhat flammable
- non-toxic and non-flammable
21: Refrigerants shall be classified by
- color codes
- toxicity and flammability
- maximum permissible quantities of each group
- requirements for commercial, industrial, and residential occupancies
22: Joints in refrigeration piping must be _____ before being covered?
- Insulated
- Leak tested
- Inspected
- Pressurized
23: The Department that certifies the transportation of refrigerant is the
- RSES
- DOT
- EPA
- EPO
24: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Classifed
- Leak checked
- Insulated and installed in a pipe duct (Encased)
- Certified
25: The Board of Boilers adopts by reference
- Montreal Protocol Safety Code
- the 1997 ANSI/ASHRAE Safety Code
- MSCA Code
- the MACS Pressure Vessel Code of Massachusetts