Topics: ASHRAE/CMR
1: What section of ASHRAE-15 governs pressure vessels?
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- OSHA
2: The Board of Boilers adopts by reference
- MSCA Code
- the MACS Pressure Vessel Code of Massachusetts
- the 1997 ANSI/ASHRAE Safety Code
- Montreal Protocol Safety Code
3: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Certified
- Insulated and installed in a pipe duct (Encased)
- Classifed
- Leak checked
4: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
5: R-22 is classified as a ____ refrigerant on the safety matrix.
- B-1
- A-1
- B-2
- A-2
6: Halo-carbon refrigerants cannot be used with what material?
- Stainless Steel
- Aluminum
- Copper
- Magnesium alloy
7: 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.
- 15
- 20
- 25
- 10
8: What type refrigerant is NOT ozone depleting?
- Halon
- HFC
- HCFC
- CFC
9: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?
- Because it's water
- Because it's a non-flammable refrigerant
- R-718 is not rated unlimited because it's a dangerous refrigerant
- Because it's cheap
10: 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.
- 8'4"
- 7.25'
- 7.00'
- 9.00'
11: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 1 week
- 30 days
- 2 months
12: Doors communicating with outside from a mechanical room must be?
- Self-closing, aligned, fire door
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
- Self-closing, wooden, fire door
13: A class B2 refrigerant is considered
- non-toxic and non-flammable
- toxic and somewhat flammable
- non-toxic and highly flammable
- toxic and non-flammable
14: Where must a refrigeration contractor's license number be displayed?
- Truck, office, every job, and on all equipment
- Uniforms, checks, and invoices.
- Trucks, invoices, and advertising
- Trucks, license plates, and uniforms
15: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
16: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- place sign, check for leaks, insulate
- nothing must be done
- make sure it's compatible, notify owner, notify A.H.J
- you can't change refrigerants
17: A declaration test is needed when the system contains more than
- 65 lbs
- 55 lbs
- 110 lbs
- 120 lbs
18: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- HCFC-123
- CFC-11
- Lithium bromide
- ammonia
19: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- public assembly occupancy
- commercial occupancy
- illegal occupancy
- institutional occupancy
20: The gauge thickness required on a CO2 tank construction is
- 1/16"
- 1/8"
- 3/32"
- 5/16"
21: Pressure vessels having an inside diameter of 6” or less shall be protected by
- a fusible plug
- a pressure relief device
- 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
22: Who is permitted to access a refrigeration machine room?
- Anyone, it's a completely safe area
- Any employee
- Authorized persons only
- Contractors only
23: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
- True
- False
24: How much refrigerant can be stored in a mechanical room outside of the system?
- 150
- 200
- 330
- 100
25: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the 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 from a failed connection or component of such system
- is such that a leak of refrigerant from failed connections will enter the occupied space