*safety

Question 1

frozen tissue will appear ___ and ___

Answer 1

waxy and yellow

Question 2

personnel should work in groups of __ or more

Answer 2

2

Question 3

oxygen analyzers will sound an alarm if the oxygen content on the air is not ___%. below __% is dangerous

Answer 3

18-24%, 15%

Question 4

Nitrogen spillage pushes away oxygen and is sneaky dangerous because it is ___ and ____

Answer 4

colorless and odorless

Question 5

if the concentration of oxygen in the air exceeds __% the air will dry the lungs and may cause permeant damage

Answer 5

60%

Question 6

oxygen monitor P/N

Answer 6

3622AS100-1

Question 7

distance it takes to progress from a deflagration to a detonation

Answer 7

induction distance

Question 8

when handling liquid oxygen, signs should be posted in the area that restricts open flame within __ft.

Answer 8

50 feet

Question 9

designed to relieve explosive overpressure and prevent damage to personnel and equipment

Answer 9

blowout panels

Question 10

properly designed and located____ protect against shrapnel and overpressure

Answer 10

barricades

Question 11

open liquid nitrogen containers can condense surrounding air and absorb oxygen at ___°F. the last of the evaporating liquid and be as much as__% oxygen.

Answer 11

-317°F, 50%

Question 12

Nitrogen boils at ___°F

Answer 12

-321°F

Question 13

when liquid oxygen spilled on clothing, it can take as long as ___ to be fully aired

Answer 13

1 hour

Question 14

rapid opening or closing of a valve can cause this type of ignition

Answer 14

adiabatic compression

Question 15

gas expansion ratio of nitrogen and oxygen

Answer 15

1:694 and 1:861

Question 16

fully open valves on cryo systems then then close ____ to prevent the valve from sticking

Answer 16

1/4 to 1/2