Topics: ASHRAE/CMR
1: Most CFC's are
- toxic
- inert
- inert but toxic
- flammable
2: 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
- compressor
- boiler
- evaporator
- outside the machinery room
3: What is an example of institutional occupancy?
- Hospital
- Football stadium
- Dorms
- Shopping mall
4: A declaration test is needed when the system contains more than
- 55 lbs
- 120 lbs
- 65 lbs
- 110 lbs
5: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 7.25'
- 8'4"
- 9.00'
- 7.00'
6: 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
7: Indirect systems using Group II refrigerants
- shall be used for mechanical equipment only
- shall be used in refrigeration system in excess of 1,000 lbs
- 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
8: Systems containing more than 110 pounds must have stop valves located at the
- compressor suction inlet
- compressor discharge outlet
- receiver inlet and outlet
- All of the above
9: The gauge thickness required on a CO2 tank construction is
- 1/8"
- 1/16"
- 5/16"
- 3/32"
10: A professional or office building would be considered what type of occupancy?
- public assembly
- business
- mercantile
- commercial
11: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
12: 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
13: B3 refrigerants are considered
- non-toxic but non-flammable
- non-toxic but flammable
- toxic and highly flammable
- toxic but non-flammable
14: What section governs pressure vessels?
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
- OSHA
15: 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
16: What type refrigerant is NOT ozone depleting?
- HCFC
- HFC
- Halon
- CFC
17: What is the refrigerant dichlorodifluoromethane?
- R-22
- R-134A
- R-12
- R-123
18: What is not a requirement of a class T machine room?
- tight fitting doors
- fire hose connection to the building fire protection system
- automatic ventilation
- self-closing doors
19: Class A refrigerants are considered
- non-toxic
- toxic
- flammable
- non-flammable
20: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 350
- 100
- 400
- 250
21: A High-Probability System
- is a system highly likely to leak form a failed connection or component of such system
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
22: System design pressures must take into consideration, not only, pressures found during normal operation but also what?
- When it's cold out
- When there is a malfunction on the high side
- When its warm out
- All of the above
23: Ammonia (NH3) is a group III refrigerant
- True
- False
24: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 1
- 1.5
- 1.2
- 2.2
25: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-2
- B-2
- A-1
- B-1