Protection Unit 4 Dreaded #s Flashcards Preview

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Flashcards in Protection Unit 4 Dreaded #s Deck (21):
1

Annual public limit
infrequent exposure

.5 rem

2

Annual Public limit
natural

.1rem

3

Cumulative EfD
exposed

agex1rem

4

Embryo/fetus
as well as per month

.5rem for total gestation
less than .05rem/mo

5

Lens of Eye

15 rem

6

Extremities

50 rem

7

What is intensity of beam when at a 90° to source at 1m distance

1m

8

PPB Barriers

1/16"
7FT TALL

9

SPS

1/32"
must overlap with PPB 1/2

10

How many events does scatter go through before reaching control booth

2

11

Max scatter allowed behind control booth

100 mrem/week

12

window in booth amt lead

1.5 mmpb

13

Portable shields amt lead

.5 mm pb

14

Tube housing leakage allowance

at 1 m cannot exceed 100 mr/hr

15

Flouro protective curtain

.25 mm

16

bucky slot shielding

.25 mm

17

thyroid shields

.5 mm

18

Eyeglasses

.35mm

19

wordload measured in

mas/wk
ma/min

20

controlled areas limit

100 mrem

21

uncontrolled areas

2 mrem/week