Topics: ASHRAE/CMR
1: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
2: A relief valve shall be located at least ___ above grade.
- 15'
- 10'
- 25'
- 36'
3: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- OSHA
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
4: 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
5: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
6: The Board of Boilers adopts by reference
- the 1997 ANSI/ASHRAE Safety Code
- the MACS Pressure Vessel Code of Massachusetts
- MSCA Code
- Montreal Protocol Safety Code
7: What refrigerant is an inorganic compound?
- R-22
- R-410A
- Ammonia
- R-132A
8: What would be the classification of a prison?
- Large mercantile
- Institutional
- Place of assembly
- Industrial
9: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- “UM” and “UV”
- “UV”
- “UL”
- “U” or “UM”
10: All serviceable components of a refrigeration system shall be provided with
- service manuals
- safe access
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- manufactures instructions on start-up procedures
11: 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
- boiler
- outside the machinery room
- compressor
- evaporator
12: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 100%
- 80%
- 75%
13: Fusible plugs shall not be used with pressure vessels of
- 15 square feet or less
- 3 cubic feet or less
- 15 cubic feet or more
- 3 cubic feet or more
14: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
15: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 700F
- 800F
- 600F
- 1000F
16: Who approves containers for refrigerants?
- D.O.D
- E.P.A
- D.O.E
- D.O.T
17: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
- the same
- lower
- higher
- there is no Group B1 refrigerants
18: A class B2 refrigerant is considered
- toxic and non-flammable
- toxic and somewhat flammable
- non-toxic and non-flammable
- non-toxic and highly flammable
19: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection as well as a temperature protection device
- over pressure protection and a rupture disc
20: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- relief plug
- rupture plug
- fusion plug
- fusible plug
21: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
22: What is a Category "M" fluid?
- A typical refrigerant used on newer air conditioning and heat pump systems
- 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
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
23: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
24: What pipe can not be used for refrigeration?
- L
- N
- K
- M
25: 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