CPC Laboratory Safety & Compliance 3

Question 1

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

Accepted Answer

Class C

Answer

Class C extinguishers use non-conductive agents such as CO₂ or dry chemical and are rated for energized electrical equipment fires.

Question 2

Under 29 CFR 1910.1450 (OSHA Laboratory Standard), which document must be maintained and accessible to all laboratory personnel?

Accepted Answer

Chemical Hygiene Plan

Answer

29 CFR 1910.1450 requires laboratories to develop and implement a written Chemical Hygiene Plan that is accessible to all employees.

Question 3

What is the primary purpose of a Job Hazard Analysis (JHA) before performing a new laboratory procedure?

Accepted Answer

To systematically identify hazards and controls for each procedural step

Answer

A JHA breaks a task into steps and identifies hazards and appropriate controls at each step before the work begins.

Question 4

When working with liquid nitrogen, the MOST critical PPE item beyond safety glasses is:

Accepted Answer

Cryogenic gloves rated for cryogenic temperatures

Answer

Cryogenic gloves specifically rated for extreme cold are essential because standard latex or nitrile gloves become brittle and fail on contact with liquid nitrogen.

Question 5

An eyewash station in a chemistry laboratory must deliver tepid flushing fluid for a minimum of:

Accepted Answer

15 minutes

Answer

ANSI Z358.1 requires eyewash stations to provide continuous tepid flushing fluid for at least 15 minutes.

(CPC) Certified Professional Chemist Practice Test

(CPC) Certified Professional Chemist Practice Test

CPC Laboratory Safety & Compliance 3