Topics: ASHRAE/CMR
1: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
- District Engineering Inspectors
- Commissioned Inspectors
- Master licensed Technician
- both a or b
2: Where a refrigeration or air conditioning system is installed,
- The company who installed the system must notify the fire department in the jurisdiction where installed
- A field inspection shall be made before it is put into service
- the form or certificate shall be authorized by the Department of Public Safety
- it shall not be operated below prescribed pressuers
3: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
4: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
5: Name three things that must be done when changing refrigeration lubricant?
- You can't change lubricants.
- Make sure it's compatible, notify owner, notify AHJ
- Place sign, check for leaks, insulate
- Nothing must be done
6: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 30 days
- 2 months
- 1 week
7: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Magnesium
- Copper
- Zinc
- Nickel
8: What do you need to do when you install a new system?
- Have it inspected
- Add refrigerant
- Document the superheat and subcooling reading
- Insulate the suction line before you take a superheat reading
9: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
10: 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
11: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection and a rupture disc
- over pressure protection as well as a temperature protection device
- over pressure protection
12: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the unoccupied space
- is such that a leak of refrigerant from failed connections will enter the occupied space
- is a system highly likely to leak from a failed connection or component of such system
- is such that any leak will cause injury or death to anyone within a 100 square foot area
13: 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.
- 7.00'
- 7.25'
- 8'4"
- 9.00'
14: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- make sure it's compatible, notify owner, notify A.H.J
- nothing must be done
- place sign, check for leaks, insulate
- you can't change refrigerants
15: When should a relief valve start to function?
- Before the purge station discharges
- Two times it's working pressure
- At it's set pressure
- 10 psi before it's set pressure
16: 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
17: What type refrigerant is NOT ozone depleting?
- Halon
- HFC
- HCFC
- CFC
18: Halogen refrigerants are corrosive to which type of metal?
- stainless steel
- copper
- magnesium
- black iron
19: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
20: When must refrigeration system covered by the code be inspected?
- Upon installation
- Not required
- Annually and when installed
- Annually
21: Stop valves shall not be permitted between the system and the
- bleed valve
- condenser
- service valve
- relief valve
22: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 100
- 10,000
- 100,000
- 1,000
23: High pressure controls should be set no higher than
- 90% of set point
- 25% of set point
- 80% of set point
- 10% of set point
24: A restaurant is classified as a
- commercial occupancy
- large mercantile occupancy
- public assembly occupancy
- mixed occupancy
25: Joints in refrigeration piping must be _____ before being covered?
- Pressurized
- Leak tested
- Insulated
- Inspected