CPI Safety Standards & Regulations 2

Question 1

Under OSHA's Lockout/Tagout (LOTO) standard 29 CFR 1910.147, which action must be performed FIRST before servicing energized equipment?

Accepted Answer

Shut off the equipment using the normal stopping procedure

Answer

LOTO procedures require the equipment to be turned off using its normal stopping procedure before isolating the energy source.

Question 2

Which NFPA standard governs the installation of electrical wiring and equipment in the United States?

Accepted Answer

NFPA 70 (National Electrical Code)

Answer

NFPA 70, the National Electrical Code (NEC), is the benchmark for safe electrical design, installation, and inspection.

Question 3

A CPI technician is working in a confined space that has previously held flammable vapors. What is the minimum atmospheric oxygen level considered safe for entry?

Accepted Answer

19.5%

Answer

OSHA defines an oxygen-deficient atmosphere as below 19.5%, so 19.5% is the minimum acceptable level for safe entry.

Question 4

Which class of fire extinguisher is specifically rated for use on energized electrical equipment?

Accepted Answer

Class C

Answer

Class C extinguishers use non-conductive agents and are rated for fires involving energized electrical equipment.

Question 5

According to OSHA 29 CFR 1926 Subpart R, when must fall protection be provided for workers on walking/working surfaces with an unprotected edge?

Accepted Answer

At 6 feet in construction

Answer

OSHA's construction standard (29 CFR 1926.502) requires fall protection at 6 feet above a lower level.

(CPI) Certified Professional Installer Practice Test

(CPI) Certified Professional Installer Practice Test

CPI Safety Standards & Regulations 2