CSS CSS - Certified Safety Supervisor Ergonomics and Confined Space Safety Questions and Answers

Question 1

Under OSHA 29 CFR 1910.146, what defines a 'permit-required confined space'?

Accepted Answer

A space that contains or has potential for a hazardous atmosphere, engulfment, or other recognized serious safety hazard

Answer

A permit-required confined space has limited entry/exit and contains or could contain a serious health or safety hazard such as a hazardous atmosphere or engulfment potential.

Question 2

What is the minimum oxygen concentration considered acceptable in a confined space atmosphere per OSHA standards?

Accepted Answer

19.5%

Answer

OSHA defines oxygen-deficient atmospheres as those with less than 19.5% oxygen; concentrations below this level require supplied-air respirators.

Question 3

Which ergonomic risk factor is most associated with cumulative trauma disorders (CTDs) of the upper extremities?

Accepted Answer

High repetition combined with forceful exertions

Answer

Cumulative trauma disorders are most strongly associated with the combination of high repetition and forceful exertions acting on tendons, muscles, and joints.

Question 4

The Waters equation (NIOSH Lifting Equation) calculates which value to guide safe manual lifting?

Accepted Answer

Recommended Weight Limit (RWL)

Answer

The NIOSH Lifting Equation outputs a Recommended Weight Limit (RWL) that, when compared to the actual load, produces the Lifting Index.

Question 5

What is the role of an 'attendant' in a confined space entry operation under 29 CFR 1910.146?

Accepted Answer

To remain outside, track authorized entrants, and initiate rescue if needed

Answer

The attendant remains outside the permit space, maintains communication with entrants, monitors for hazards, and initiates rescue procedures without entering.

(CSS) Certified Safety Supervisor Practice Test

(CSS) Certified Safety Supervisor Practice Test

CSS CSS - Certified Safety Supervisor Ergonomics and Confined Space Safety Questions and Answers