Radiation Exposure

Question 1

BUMEDINST 6470.10c

Answer 1

Enclosures (1) Contains reference used within the instruction

Enclosure (2- 11) general guidance

Enclosure 12 isotope most likely to involved

Enclosure 13 supplies for personnel decon

Enclosure 14 provides contact list

Question 2

Casualty Procedure

Answer 2

Treatment of life-limb, eyesight takes precedence over radiological controls.

Table 1 provides priorities when processing contaminated persons

Question 3

Methods of exposure

Answer 3

External irradiation

external contamination

wound contamination

internal contamination

Question 4

External irradiation

Answer 4

200 rad, survival should not be questioned

Question 5

Neutron exposure <25 rad

Answer 5

Neutron exposure: <25rad

Quicksort method

remove clothing

MFR w/ DT-680

200 ccc
reading of 0.2 mR/hr above background represents a neutron exposure above 25 rads

Question 6

Neutron radiation >25 rad

Answer 6

Collect 10cc blood and 100 cc of urine for sodium analysis

1/5 gram of hair for phosphorus 32

metal objects worn by individual

Question 7

external irradiation exposure is in excess of any federal exposure limits

Answer 7

Notify BUMED REAB immediately by phone or message

NAVMED (6470/1) Situation Report

Situation Radiation medical exam

Obtain CBC with differential and platelets every 24 hours for two days

Question 8

External Contamination

Answer 8

detectable counts on skin are greater than two times background

> 100 ccpm or 450 uuCi beta/gamma direct frisk

> 50 uuCi of alpha direct frisk

Question 9

Evaluation for external contamination

Answer 9

Medical exam

acute medical problems

eval extent of external contamination

eval possibility of internal contamination

interview witness/individual

Question 10

External Contamination

Co60 thumb rule

Answer 10

100ccpm= 450uuCi/100cm2 = 0.1 mRad/hr

Question 11

Decon procedures

objectives

Answer 11

Primary- prevent internal contamination

Secondary- minimize dose to eyes skin

Effective decon attempt is one that reduces the survey count rate by 50% or more

Question 12

Decon Methods

procedure order

Answer 12

follow enclosure (8) BUMEDINST 6470.10c

Remove clothing

decon any contaminated open cuts or wound

decon external and internal areas of face and ears

decon hands

Decon all other

Question 13

Methods of external decontamination

Dry Decon

Answer 13

Apply self-adhering tape to lift removable material from skin

Procedure works best for dust type contamination
Avoid using strongly adherent tape
Do not apply to hairy areas, eyelids

Question 14

Methods of external decontamination

Answer 14

Wash 1-3 mins soap and water

Wash 1-3 mins using waterless hand cleaner

Wash 1-3 mins using mild abrasive. Lava soap

Question 15

Methods of external decontamination

Sweating or skin sloughing

Answer 15

Wrap or cover with bandage or gloves

after 6-9 hours remove, measure contamination

treat bandage as RAM

Question 16

Wound Contamination

Detecting

Answer 16

Monitor by using MFR with 304 probe and 1mm plastic barrier

Question 17

Wound Decon Methods

Answer 17

Irrigate with sterile water

clean with soap or detergent

Wet to Dry dressing

Consult BUMED
Record
Location
type of radionuclide , chemical form
counts
methods of decon used

Question 18

Internal Contamination

When to notify BUMED immediately

Answer 18

Exceeding 50 rem to an organ or tissue or 5 rem to whole body

Question 19

Determine or estimate the amount of contamination and expected dose

Answer 19

Nasal swabs

throat or saliva swabs

Partial or whole body counting (internal monitoring)

Urine or fecal bioassay