313D Safety and Regulations 2

Question 1

Under EPA Section 608, which refrigerant recovery technique is required when the compressor is inoperative?

Accepted Answer

Push-pull recovery

Answer

Passive recovery using system pressure

Answer

System-dependent (passive) recovery only

Answer

No recovery is required if the compressor is broken

Question 2

What is the maximum allowable leak rate for a comfort cooling appliance containing 50 or more pounds of refrigerant before repair is required?

Accepted Answer

10% per year

Answer

5% per year

Answer

15% per year

Answer

20% per year

Question 3

Which OSHA standard governs lockout/tagout procedures for HVAC technicians working on energized equipment?

Accepted Answer

29 CFR 1910.147

Answer

29 CFR 1910.132

Answer

29 CFR 1910.303

Answer

29 CFR 1910.212

Question 4

A technician discovers a system using R-22. Under current EPA rules, what refrigerant options exist for topping off this system?

Accepted Answer

Reclaimed R-22 or approved substitute refrigerants

Answer

Virgin R-22 only

Answer

Any HFC refrigerant as a drop-in replacement

Answer

The system must be immediately decommissioned

Question 5

When working with refrigerants, safety data sheets (SDS) must be available to employees under which OSHA standard?

Accepted Answer

29 CFR 1910.1200

Answer

29 CFR 1910.119

Answer

29 CFR 1910.1000

Answer

29 CFR 1910.134

Question 6

What minimum concentration of oxygen in air is considered acceptable for safe entry into a confined space?

Accepted Answer

19.5%

Answer

16%

Answer

18%

Answer

21%

Question 7

Which document must an HVAC technician have to legally purchase refrigerants regulated under EPA Section 608?

Accepted Answer

An EPA Section 608 technician certification

Answer

A state contractor's license

Answer

A manufacturer's authorization letter

Answer

An OSHA 10-hour card