CHMM Occupational Health And Safety 4

Question 1

A chemical has a Threshold Limit Value-Ceiling (TLV-C) designation. What does this mean for worker exposure?

Accepted Answer

Exposure must not exceed this concentration at any time, even instantaneously

Answer

A TLV-C is an absolute ceiling concentration that must never be exceeded at any point during the workday, regardless of duration.

Question 2

Which OSHA standard requires employers to develop a written Hazardous Waste Operations and Emergency Response (HAZWOPER) plan for uncontrolled hazardous waste sites?

Accepted Answer

29 CFR 1910.120

Answer

29 CFR 1910.120 (HAZWOPER) requires a written safety and health program, medical surveillance, training, and emergency response plans for hazardous waste site workers.

Question 3

In toxicology, what term describes the dose-response relationship concept that 'the dose makes the poison'?

Accepted Answer

Paracelsus principle

Answer

The Paracelsus principle — 'sola dosis facit venenum' (only the dose makes a poison) — is the foundational concept that all substances can be toxic at sufficient doses.

Question 4

Which personal protective equipment level provides the highest level of skin, respiratory, and eye protection under EPA guidelines?

Accepted Answer

Level A

Answer

Level A PPE includes a fully encapsulating chemical-protective suit with SCBA, offering the maximum protection against vapors, gases, and skin absorption hazards.

Question 5

Under OSHA's respiratory protection standard (29 CFR 1910.134), before an employee is fit-tested for a tight-fitting respirator, what must be completed first?

Accepted Answer

A medical evaluation by a physician or licensed health professional

Answer

OSHA requires medical evaluation before fit testing to ensure the employee is physically capable of wearing a respirator without adverse health effects.

CHMM - Certified Hazardous Materials Manager Practice Test

CHMM - Certified Hazardous Materials Manager Practice Test

CHMM Occupational Health And Safety 4