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HDS 2021 > X-ray > Flashcards

X-ray Flashcards

1
Q

What is the primary use of an X-ray?

A

To look inside a container

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2
Q

What can an X-ray help identify?

A

bomb components, fuzing system, load, possible point of entry

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3
Q

What are other uses of X-rays

A

Looking for hidden: firearms, drugs, serial numbers, circuit breakers

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4
Q

What angle does the X-ray head focus

A

40 degree angle

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5
Q

Does the X-ray contain any radio active isotopes?

A

no

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6
Q

X-rays energy is measured in what?

A

Kilovolts (KV)

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7
Q

What does a higher KV mean?

A

more penetration

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8
Q

X-ray generator produces _____ heat and ____ x-ray?

A

99% heat, 1% X-ray

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9
Q

What does the mineral oil do for the X-ray tube?

A

dissipates heat

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10
Q

How much radiation does a person absorb on average annually

A

620milirem per year

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11
Q

What are the risks of radiation

A

High does of radiation is hazardous to health
cannot be detected by human senses
portable Xray units may expose user or bystanders

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12
Q

What kind of effects are associated with acute dose of RAD

A

early

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13
Q

What kind of effects are associated with chronic dose

A

late effects

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14
Q

What are the effects of RAD on personnel

A

Cell alteration in juveniles under 18, external effects, internal effects

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15
Q

Are X-rays cumulative?

A

Yes

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16
Q

What will protect you from the effects of RAD?

A

Time distance and shielding

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17
Q

What is a good rule of thumb regarding protecting yourself from RAD exposure

A

Observing blast and frag safety distances you will be outside RAD safe distances

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18
Q

What is the safe distance for X-rays

A

20’ to rear and sides, 100’ to front

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19
Q

Which is more dangerous RAD or blast and Frag?

A

Blast and Frag

20
Q

What type of Xray is the XR200

A

pulse generator

21
Q

What are the 3 types of Xray machines

A

continuous wave, pulse, fluoroscope

22
Q

When using pulse generators you can sometimes develop what kind of images

A

double images

23
Q

What is the KV rating for the XR150

A

150 KV

24
Q

What is the KV rating for the Xr200

A

150 KV

25
Q

What is the KV rating of the XRS-3

A

270 KV

26
Q

What is the KV rating of the XRS-4

A

370 KV

27
Q

What is an advantage to continuous wave

A

ability to increase or decrease KV

28
Q

What does KV and KVP mean

A

Kilovolt and kilovolt peak

29
Q

What are the decals on the XR200

A

Xray on, Xray pulsing, 40 degree beam, caution RAD

30
Q

If you want to connect to XR200 remotely what should the default pulse be set to?

A

99

31
Q

What is the service life of the Xray tubes

A

100,000 pulses

32
Q

What can you do in a fuel rich environment to keep the Xray source from setting off an explosion

A

place the source in a 6 mil plastic bag

33
Q

What can you do to open up the beam angle

A

back that ass up

34
Q

At a minimum what is the best source placement

A

4 ft

35
Q

When shooting Xray what is best to shoot long axis or short axis

A

Short axis

36
Q

What is an easy pulse reference

A

4ft-40, 8ft-80 ect

37
Q

What is the inverse square law rule

A

double the distance 4X the pulses, ie 4 ft-80 pulses 8ft-320 pulses

38
Q

Why do you always Xray steel pipes

A

to ensure there is nothing hazardous inside the pipe

39
Q

When Xraying a human what is a good starting point?

A

under 200 lbs-400 pulses 3’ from skin

over 200 lbs 800 pulses 3’ from skin

40
Q

When taking Xrays what should you do if your panel has to be further away from your package

A

back up your source

41
Q

What are the parts of an XR-200

A

collimator, tube, tripod mount

42
Q

What should you do if the Xray does not pulse

A

check battery, check 20Amp fuse

43
Q

How close should the film be to the package

A

1/4-1/2 inches

44
Q

How does the Xray panel work

A

The panel captures the Xray energy and stores the pattern as a latent image

45
Q

What occurs to the image if the wrong side of the panel is exposed to the Xray

A

The image will be in reverse

46
Q

What is the effect when the panel is 1 foot behind the package

A

items appear larger

47
Q

How many milirems will you receive per hour if you stay 20’ behind the source

A

never more than 2 milirems which is acceptable

HDS 2021 (24 decks)

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