Question 1

What is the minimum personal protective equipment required when entering a laboratory?

Accepted Answer

Minimum lab PPE includes a long-sleeved shirt, long pants, and closed-toed shoes. Wear a flame-retardant lab coat that fits well and is fully buttoned to prevent it from catching on objects. Always wear safety glasses with side shields that are impact-resistant and protect against flying particles and chemical splashes.

Question 2

How do you choose the right type of chemical-resistant gloves for laboratory work?

Accepted Answer

Consult a chemical compatibility chart to determine which glove type suits your substances. The chart shows the glove's resistance to various chemicals and lists breakthrough time—the duration before a chemical permeates the glove. Glove options include latex, nitrile, neoprene, polyethylene, and polyvinyl chloride, each offering different chemical protection levels.

Question 3

What specialized gloves are needed for handling extremely cold materials in the lab?

Accepted Answer

Cryogenic gloves are longer than regular gloves and feature a nylon outer layer with a polyester inner layer. Use these gloves when handling extremely cold materials like liquid nitrogen. They provide insulation and protection against cold-related injuries while maintaining dexterity for precise laboratory work.

Question 4

When should you use face shields or goggles instead of safety glasses?

Accepted Answer

Use goggles or a full face shield when working with dangerous chemicals that may splash, materials causing flying sparks, or heat sources. For ultraviolet, infrared, or intense visible radiation, use shaded glasses or a shaded face shield. Safety glasses alone provide insufficient protection for these hazardous situations.

Question 5

What ear protection is required in laboratory environments with high noise levels?

Accepted Answer

Use ear protection when exposed to noise levels above 85 decibels. Both ear plugs and earmuffs reduce noise by 15 to 30 decibels individually. If noise exceeds 105 decibels, use both ear plugs and earmuffs simultaneously for maximum adequate protection against hearing damage.

Question 6

What additional PPE is needed when working with radiation hazards?

Accepted Answer

Radiation requires special attenuation gloves for protection. Leaded rubber gloves provide maximum protection but are difficult to work with and must be disposed of in hazardous waste. Gloves lined with other metals like tungsten are easier to use but offer less protection than leaded options.

Question 7

How do engineering controls complement personal protective equipment in the laboratory?

Accepted Answer

PPE does not always provide sufficient hazard protection alone. Engineering controls like fume hoods and laminar flow cabinets reduce risks by removing hazardous substances from the work environment. Combining proper PPE with engineering controls creates a comprehensive safety approach for laboratory work.

위험	메서드	근원	보호
화학	튀김	액체, 산/염기, 용액	안경, 고글, 얼굴 방패
화학	증기/가스	휘발성 용매/고체, 가스	고글, 풀 페이스 가스 호흡보호구
먼지	공중 입자	미세 분말, 나노 입자, 모래, 톱질	고글, 미립자 호흡보호구가 있는 고글, 전체 얼굴 미립자 호흡보호구
영향	플라잉 파티클, 파편, 물체	톱, 네일 건	안경, 고글, 얼굴 방패
광복사	UV, IR, 가시광선	토치 용접, 아크 용접, 토치 납땜	용접 고글, 적절한 그늘의 용접 얼굴 방패
		UV, IR 방사선	안경
		섬광	착색 안경
열	비행 입자, 파편, 불꽃	연삭, 뜨거운 작업	안경, 고글, 얼굴 방패
	튀김	용융 금속, 소금, 뜨거운 용매	고글, 얼굴 방패
	노출	화염, 뜨거운 물체	안경, 고글, 얼굴 방패
생물학의	공중 입자	생물학적 샘플	안경, 고글, 얼굴 방패, 미립자 호흡구가 있는 고글, 전체 얼굴 미립자 호흡보호기

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