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Nuclear Boards > Nuclear safety > Flashcards

Nuclear safety Flashcards

1
Q

Roentgen

A

Exposure in air- when we check things

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2
Q

F Factor fat

A

100=kev photons 0.91

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3
Q

F Factor muscle

A

100=kev photons 0.96

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4
Q

F Factor bone

A

100=kev photons 1.5

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5
Q

Rad

A

Roentgen x F factor = Absorbed dose 1RAD=100erg/gr

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6
Q

SI unit for radiation absorbed dose

A

100 Rad= 1 Gray

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7
Q

Quality Factor for X and Gamma rays and Beta particles

A

determined by linear energy transfer = 1.0

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8
Q

Quality factor for Neutrons and protons

A

determined by linear energy transfer = 10.

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9
Q

REM or Roentgen equivalent Man

A

REM= RAD x QF

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10
Q

Home many REM in 1 Rad of Gamma Rays

A

Rad (1) x QF of gamma Ray (1)=1 REM

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11
Q

Quality factor of Alpha particles

A

20

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12
Q

1 Rad of alpha particlies = REM?

A

20 REM =Rad (1) x QF of alpha particle (20)=20 REM

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13
Q

SI for REM

A

1 Sievert = 100 REM

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14
Q

Roentgen

A

Exposure in air

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15
Q

RAD

A

radiation ABSORBED dose Rx F

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16
Q

REM

A

Roentgen equivalent man (RAD x QF)

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17
Q

SI unit of GrAy

A

100 RAD ABSORBED DOSE

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18
Q

SI unit of Sievert

A

100 REM dose equivalent

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19
Q

Effective dose equivalent

A

measure of theroretical risk units in REM or Sievert

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20
Q

Background radiation natural source

A

360mREM

21
Q

total background radiation including medical procedure

A

620mRem

22
Q

Non occupational Dose limits from occupational sources (shielding or rooms/breastfeeding)

A

1mSV or 100mREM

23
Q

non occupational dose limits from family member released to public

A

5mSV or 500mRem

24
Q

occupational whole body dose limit

A

5REM or 0.05Sv or 5000mREM

25
Q

occupational dose for skin or extremity

A

50 Rem or 0.5Sv

26
Q

occupational dose for lens of eye

A

15 Rem 0.15Sv

27
Q

occupational dose Quarterly level 1 whole body dose limit

A

125mRem/q

28
Q

occupational dose Quarterly level 2 whole body dose limit

A

375mRem/q

29
Q

occupational dose Quarterly level 1 extremity and skin

A

1250mRem/q

30
Q

occupational dose Quarterly level 2 extremity and skin

A

3750 mRem/q

31
Q

occupational dose Quarterly level 1 eye

A

375mRem/q

32
Q

occupational dose Quarterly level 2 eye

A

1125 mREM/q

33
Q

pregnant worker

A

fetus is non occupational worker so 5mSV or 500mREM

34
Q

dose when you must monitor

A

500mRem/year or 5mSV (baby badge)

35
Q

half -value layer in lead of Tech

A

0.03cm

36
Q

half -value layer in lead of 18F

A

0.4cm

37
Q

half -value layer in lead of 137 Cs

A

0.6cm

38
Q

deterministic

A

threshold for occurance

39
Q

stochastic

A

probability increases with DOSE

40
Q

receiving package

A

must be monitored within 3 hours or start of business

41
Q

Type 1 white warning

A

Surface exposure <0.5 mR/hr, no detection at 1 meter exposure, surface wipe test <6600 dpm/300cm2 (same as 2)

42
Q

type 2 yellow warning

A

Surface exposure <50 mR/hr, 1 meter exposure <1mR/hr, surface wipe test <6600 dpm/300cm2 (same as 1 )

43
Q

type 3 yellow for robidum

A

Surface exposure <200 mR/hr, 1 meter exposure <10mR/hr, surface wipe test <6600 dpm/300cm2 (same as 1 and II)

44
Q

Expected package limited quantity

A

< 11mCi of Tc99 and reading less than 0.5mR/hr and wipe test <6600dpm/300cm2

45
Q

Medical event must report to NRC

A

> 5Rem or 0.05Sv to whole body OR >50Rem 0.5Sv to any individual organ

46
Q

Radioactive material

A

area where materials used or stored

47
Q

radiation area

A

if individual could exceed dose of >5mRem in an hour 30cm from source

48
Q

high radiation area

A

if dose exceeds >100mRem in an hour 30 cm from source or any surface where radiation penetrates

Nuclear Boards (6 decks)

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