Topics: ASHRAE/CMR
1: 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
2: Refrigerants shall be classified by
- color codes
- toxicity and flammability
- maximum permissible quantities of each group
- requirements for commercial, industrial, and residential occupancies
3: What refrigerant doesn't have to be classified?
- R-422A
- R-718
- R-717
- R-134A
4: When must refrigeration system covered by the code be inspected?
- Annually and when installed
- Not required
- Annually
- Upon installation
5: A Low-Probability System
- 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 can not enter the occupied space
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is a system highly likely to leak form a failed connection or component of such system
6: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
7: What type of material can't be used on the outlet of a relief valve?
- Copper
- PVC
- Stainless steel
- Magnesium alloy
8: Setting a pressure relief device shall not exceed ___ of the design pressure
- 100%
- 90%
- 80%
- 75%
9: Machinery rooms must be vented to ______?
- unoccupied spaces
- neutralizing tank
- outdoors
- basement
10: What kind of material can't be used on the outlet of a relief valve?
- Copper
- Aluminum
- PVC
- Stainless Steel
11: 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
12: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 10,000
- 100,000
- 100
- 1,000
13: R-123 belongs to Group
- B-3
- B-2
- A-3
- B-1
14: What refrigerant were phased out in 2004?
- R-11
- R-12
- R-22
- R-134a
15: R-22 falls under which safety classification?
- B-1
- B-2
- A-2
- A-1
16: Stop valves shall not be permitted between the system and the
- relief valve
- bleed valve
- service valve
- condenser
17: R-22 is considered a(n)
- HFC
- HCFC
- CFC
- HCFCH
18: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- refrigerant sensing
- phosgene gas sening
- CO Sensing
- A group sensing
19: 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
20: 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
21: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 50
- 55
- 15
- 75
22: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 700F
- 600F
- 800F
- 1000F
23: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
24: What does safe access mean?
- OSHA approved
- Locked doors
- A clear unobstructed path to the equipment and controls
- Well-lit exit signs
25: Halogen refrigerants are corrosive to which type of metal?
- stainless steel
- black iron
- copper
- magnesium