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Occupational Hygiene > 1. > Flashcards

1. Flashcards

1
Q

occupational hygiene

A

science and art devoted to the anticipation, recognition, evaluation and control of these environmental facotrs, stressors, arising in or from the workplace, which may cause sickness, impaired health and well-being, or significant discomfort and inefficiency among workers or among citizens o fthe community.

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2
Q

Hygiene Hazard recognition

A

the plant (work area), the process, the products, the people.

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3
Q

3 types of hazards

A

chemical,
Physical
Biological

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4
Q

Menieres Disease -

A

affects hearing and balance

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5
Q

Tinnitus

A

ringing or hissing noise in the head

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6
Q

eyes

A

organ with greatest risk of occ hygiene injuries

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7
Q

simple asphyxiants

A

dilutes atmospheric oxygen - nitrogen, hydrogen, methane

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8
Q

chemical asphyxiants

A

chemical action to prevent the blood from transporting oxygen from the lungs to the tissues. carbon monoxide

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9
Q

Anesthetics

A

depress central nervous system . alcohol

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10
Q

respirable particle size

A

less than 5 microns

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11
Q

routes of entry

A

inhalation, skin, ingestion, injection

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12
Q

lethal dose

A

LD50

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13
Q

Lethal concentration

A

LC50

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14
Q

absorption

A

a gas or vapour passes through a liquid solution and is removed

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15
Q

adsorption

A

A gas or vapour is collected by tubes fillled with granules of silica gel or activated charcol

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16
Q

TLV - TWA

A

Time weighted average - 8 hr

17
Q

Stel

A

15 min weighted average exposure that should not be exceedd

18
Q

TLC - C

A

Celing - never exceeded

19
Q

what is sound

A

rapid variation in pressures. vibrations travel.

frequency, wavelength, velocity

20
Q

laser acronym

A

light amplification by stimulated emission of radiation

thermal burns and photochemical injuries

21
Q

laser classes

A

1 harmless

4 very hazardous

22
Q

outdoors with solar load (WBGT)

A

wbgt = 0.7 NWB + 0.2 GT + 0.1 Db

23
Q

indoors/ no solar load (WBGT)

A

wbgt= 0.7 NWB + 0.3 GT

Occupational Hygiene (1 decks)

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