IHSA Personal Protective Equipment (PPE) Selection & Use 2

Question 1

A worker is handling concentrated hydrochloric acid. Which glove material provides the best chemical resistance for this task?

Accepted Answer

Neoprene or nitrile

Answer

Neoprene and nitrile gloves offer superior resistance to strong inorganic acids like hydrochloric acid; always verify chemical compatibility charts, but these materials consistently outperform latex and cotton against HCl.

Question 2

The Noise Reduction Rating (NRR) of a hearing protector is 30 dB. Using OSHA's derating method, what is the estimated real-world noise reduction applied to the NRR?

Accepted Answer

15 dB

Answer

OSHA requires the NRR to be derated by 50% for earmuffs and most earplugs; thus 30 dB × 0.50 = 15 dB of effective protection is applied in OSHA's exposure calculations.

Question 3

ANSI/ISEA 107 classifies high-visibility safety apparel. Which performance class is required for workers exposed to highway speeds greater than 50 mph?

Accepted Answer

Class 3

Answer

ANSI/ISEA 107 Class 3 provides the highest level of visibility with the most background and retroreflective material, required for workers near high-speed roadways exceeding 50 mph.

Question 4

Under OSHA 29 CFR 1926.502, what is the maximum free-fall distance permitted for a personal fall arrest system (PFAS) in construction?

Accepted Answer

6 feet

Answer

OSHA 1926.502 requires that a personal fall arrest system limit the free-fall distance to 6 feet or less to minimize injury forces on the body.

Question 5

Which component of a personal fall arrest system absorbs the energy of a fall and must be replaced after any fall event?

Accepted Answer

Shock-absorbing lanyard or deceleration device

Answer

The shock-absorbing (energy-absorbing) lanyard or deceleration device is designed to deploy and dissipate fall energy; once activated it is permanently deformed and must be replaced before further use.

(IHSA) Infrastructure Health & Safety Association Certified Coach Practice Test

(IHSA) Infrastructure Health & Safety Association Certified Coach Practice Test

IHSA Personal Protective Equipment (PPE) Selection & Use 2