Topics: ASHRAE/CMR
1: What is not a requirement of a Class T machine room?
- Fire hose connected to the building fire protection system.
- Automatic ventilation
- Self-closing doors
- Tight fitting doors
2: 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
3: A High-Probability System
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
- is a system highly likely to leak form a failed connection or component of such system
4: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- there is no Group B1 refrigerants
- the same
- higher
- lower
5: Pressure vessels having an inside diameter of 6” or less shall be protected by
- a fusible plug
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- either a fusible plug or a pressure relief device
- a pressure relief device
6: No open flames are allowed in the machinery room unless?
- Approved by the authorized person
- Approved by the installing contractor
- Never can be allowed
- Only when combustion air is provided from outside of the machinery room
7: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 90%
- 80%
- 99%
- 75%
8: Which refrigerant replaced R-12?
- R-134A
- R-410A
- R-22
- R-407A
9: When must refrigeration system covered by the code be inspected?
- Annually
- Not required
- Upon installation
- Annually and when installed
10: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
11: What does safe access mean?
- OSHA approved
- Well-lit exit signs
- Locked doors
- A clear unobstructed path to the equipment and controls
12: Refrigerant restricted in 2004 but used for transition for decades:
- R-11
- R-22
- R-134A
- R-123
13: 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.
- 400
- 350
- 100
- 250
14: 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
15: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-2
- B-1
- B-2
- A-1
16: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
17: Can you use Ammonia in industrial applications?
- No, never
- Yes, always
- When mixed with R-718
- Yes, Under certain condidtions
18: Pressure relief valves shall be marked with the data from
- Section XIII Division of the ASME Boiler & Pressure Code
- Section VIII 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
19: R-11 belongs to Group
- A-1
- B-3
- B-1
- A-2
20: Which refrigerant class listed below is the most flammable?
- C3
- A2
- B2
- A3
21: Large mercantile occupancy is
- 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.
- 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 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.
22: What is an egress?
- A valve put on the low side of the system to prevent frosting
- A code violation
- An entrance or exit
- An escape route
23: NH3 is
- ammonia
- lithium bromide
- R-718
- R-508A
24: Halo-carbon refrigerants cannot be used with what material?
- Magnesium alloy
- Copper
- Stainless Steel
- Aluminum
25: How are refrigerant blends classified?
- Based on best case Fractionation
- Based on worst case fractionation
- Blends don't have to be classified
- Based on the oil used