Chapter 2 Flashcards
Fire watch need if and when
when fire is possible
or the using areas not normally assigned for such operation
- 35ft radius and watching 30 min after free is out
ANSI
American national standard institute
ANSI Z49.1
Safety in welding cutting and alined processes
ANSI Z87.1
Occupational and educational eye and face protection
CRYOGENIC
VERY cold well below 0 degrees
Filer Lense
Shaded glass sense to protect against radiation
lenses are numbered - Higher # = greater protection
NEMA
National Electrical manufacturers association
Pascal
metric system unit for pressure
1 PSI = 6895 Pascal (Pa)
Primary shock currents
cause direct harm and shock currents greater than 6 milliamperes (mA)
Secondary Shock currents
.5 mA - 6mA are secondary currents - caused by involuntary muscular reactions without causing direct physiological harm
Current Perception threshold
.5 mA - the point you begin to feel tingle from currents
ANSI publication Z117.1
Safety requirements for working in tanks and confines spaces