Topics: ASHRAE/CMR
1: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UV or UR
- UL and UM
- UL and UR
- UM or UL
2: A class B2 refrigerant is considered
- non-toxic and highly flammable
- toxic and non-flammable
- non-toxic and non-flammable
- toxic and somewhat flammable
3: No open flames are allowed in the machinery room unless?
- Only when combustion air is provided from outside of the machinery room
- Approved by the installing contractor
- Never can be allowed
- Approved by the authorized person
4: 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
5: What is an example of institutional occupancy?
- Shopping mall
- Football stadium
- Hospital
- Dorms
6: What is the refrigerant dichlorodifluoromethane?
- R-22
- R-12
- R-123
- R-134A
7: What refrigerant doesn't have to be classifted?
- R-711
- R-718
- R-717
- R-134a
8: Single compound Refrigerants are classified by what two criteria?
- Flammability and temperature range
- Flammability and toxicity
- Weight and color
- Temperature range and hazardousness
9: Which occupancy can ammonia be used in?
- commercial
- depends on the quantity of freon
- redifential
- industrial
10: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 1
- 1.2
- 2.2
- 1.5
11: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 15
- 50
- 75
- 20
12: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 30 days
- 1 week
- 2 months
- 14 days
13: How are refrigerant blends classified?
- Based on the oil used
- Based on best case Fractionation
- Based on worst case fractionation
- Blends don't have to be classified
14: What section governs pressure vessels?
- Section 8 ASHREA 15 ASME unfired
- OSHA
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
15: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 350
- 50
- 100
- 550
16: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Classifed
- Insulated and installed in a pipe duct (Encased)
- Leak checked
- Certified
17: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.
- 5.5
- 2.5
- 2.0
- 3.0
18: How many gallons of water do you need per pound of ammonia?
- 50
- 100
- 10
- 1
19: A High-Probability 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
- is a system highly likely to leak form a failed connection or component of such system
20: R-123 belongs to Group
- B-3
- A-3
- B-2
- B-1
21: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.
- 25
- 20
- 10
- 15
22: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- CO Sensing
- A group sensing
- phosgene gas sening
- refrigerant sensing
23: A declaration test is needed when the system contains more than
- 110 lbs
- 65 lbs
- 120 lbs
- 55 lbs
24: Who authorizes changes to the safety codes?
- Board of Boilers
- Person who pulled the permit
- Contractor who last serviced the system.
- Person in charge of the facility
25: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-11
- R-113
- R-22
- R-12