Physical Hazards

Question 1

What is NIOSH maximum weight limit?

Answer 1

never more than 51 lbs.

Question 2

Lifting Index Formula?

Answer 2

lifting index (LI) = load weight/recommended weight limit

Question 3

NIHL is most apparent at ___ Hz?

Answer 3

4000

Question 4

What is action level for noise per OSHA?

Answer 4

85 dBA

Question 5

What is PEL of noise per OSHA?

Answer 5

90 dBA

Question 6

What entity inspects nuclear sites?

Answer 6

NRC

Question 7

What is the first sens to be affected by hypoxia?

Answer 7

vision

Question 8

Per NRC, what is occupational exposure limit for radiation?

Answer 8

5 rem (.05 Sv)

Question 9

Alpha particle shielding material?

Answer 9

paper, skin, light fabric

Question 10

Beta particle shielding material?

Answer 10

heavy clothing protects but may penetrate germinal layers of skin

Question 11

Gamma rays and x-rays shielding material?

Answer 11

lead shielding

Question 12

1 Sievert (Sv) is = ___rem

Answer 12

100 rem

Question 13

Symptoms of heat syncope:

Answer 13

dizziness, syncope, vasodilation, quick recovery expected

Question 14

Symptoms of heat cramps:

Answer 14

cramping, hyponatremia, normal body temp, usually later in the day or post-work, absence of constitutional symptoms

Question 15

Symptoms of heat exhaustion:

Answer 15

salt and water depletion, NV, weakness, mental status change, “clammy and pale”

Question 16

Symptoms of heat stroke:

Answer 16

failure to dissipate body heat, reduced LOC or psychosis, circulatory collapse, rhabdo, ARF, “hot and dry”

Question 17

What does WGBT measure?

Answer 17

Air temp, humidity, radiant heat,air flow

Question 18

Hyperbaric environment: how many atmospheres of pressure per 33 feet of depth?

Answer 18

1 atm per 33 feet of depth

Question 19

Hypobaric environment: how many atmospheres of pressure at 18,000 ASL?

Answer 19

0.5 atm

Question 20

What are illnesses associated with hypobaric environments?

Answer 20

hypoxia, AMS, HAPE, HACE

Question 21

Prevention and treatment of AMS?

Answer 21

slow ascent, acetazolamide; treated with descent, dexamethasone, O2

Question 22

Altitude hypoxia: what sense is first affected?

Answer 22

vision-diminished night vision