COSS Hazard Recognition and Control 5

Question 1

Which type of confined space requires a written permit, attendant, and trained entry supervisor before entry?

Accepted Answer

Permit-required confined space

Answer

A permit-required confined space has one or more serious hazards (atmospheric, engulfment, entrapment) and requires a formal entry permit system.

Question 2

During an incident investigation, a safety specialist discovers that a worker was not trained on a new chemical introduced to the worksite. This is BEST classified as which type of cause?

Accepted Answer

Root cause

Answer

A systemic failure such as lack of required training is a root cause—the underlying deficiency that allowed the hazardous condition to exist.

Question 3

What is the primary purpose of a 'change analysis' or 'Management of Change' (MOC) process in hazard recognition?

Accepted Answer

Identify new hazards introduced by process, equipment, or material changes before implementation

Answer

MOC systematically evaluates changes before they are implemented to identify and control new hazards they may introduce.

Question 4

Which ionizing radiation type has the GREATEST penetrating power and requires the most shielding?

Accepted Answer

Gamma rays

Answer

Gamma rays are highly penetrating electromagnetic radiation requiring dense shielding such as lead or thick concrete to attenuate effectively.

Question 5

A safety specialist is assessing a warehouse where workers manually lift boxes weighing 50 lbs repeatedly throughout the day. Which NIOSH lifting equation component accounts for the horizontal distance of the hands from the body?

Accepted Answer

Horizontal multiplier (HM)

Answer

The horizontal multiplier (HM) in the NIOSH Revised Lifting Equation penalizes lifts where the load is held far from the body's midline.

COSS - Certified Occupational Safety Specialist Practice Test

COSS - Certified Occupational Safety Specialist Practice Test

COSS Hazard Recognition and Control 5