CPE Safety & Environmental Compliance 3

Question 1

Which OSHA standard specifically governs the lockout/tagout (LOTO) of energy sources during equipment servicing?

Accepted Answer

29 CFR 1910.147

Answer

29 CFR 1910.147, the Control of Hazardous Energy standard, mandates lockout/tagout procedures to protect workers during servicing and maintenance.

Question 2

A plant burns coal and must comply with EPA's National Ambient Air Quality Standards (NAAQS). Which pollutant is NOT classified as a criteria pollutant under the Clean Air Act?

Accepted Answer

Hydrogen sulfide (H₂S)

Answer

EPA's six criteria pollutants are SO₂, CO, NO₂, O₃, PM2.5/PM10, and Pb; hydrogen sulfide is not among them.

Question 3

Under SARA Title III (EPCRA), what is the purpose of Tier II reporting?

Accepted Answer

Providing local emergency planners with hazardous chemical inventory data

Answer

EPCRA Section 312 Tier II reports give Local Emergency Planning Committees (LEPCs) annual inventory data on hazardous chemicals stored at facilities.

Question 4

Which type of fire extinguisher is appropriate for a Class D (combustible metal) fire in a plant environment?

Accepted Answer

Dry sand or specific metal-fire agent extinguisher

Answer

Class D fires involving metals like magnesium or titanium require dry sand or a dry powder agent specifically rated for combustible metals, as water or CO₂ can worsen the fire.

Question 5

What is the permissible exposure limit (PEL) concept established by OSHA, and how does it differ from ACGIH's TLV?

Accepted Answer

PELs are legally enforceable 8-hour TWA limits; TLVs are advisory consensus values often more current

Answer

OSHA PELs are legally binding standards set in 29 CFR 1910.1000, while ACGIH TLVs are consensus-based guidelines that are typically updated more frequently and are often more protective.

(CPE) Certified Plant Engineer Practice Test

(CPE) Certified Plant Engineer Practice Test

CPE Safety & Environmental Compliance 3