P700c intro to radiation Flashcards

0
Q

Cbp radiation detection program was created to detect and identify

A

Materials

Commodities

Components

3 associated with development, deployment, delivery WME

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1
Q

Cbp radiation detection program

A

To prevent and detect elicit radioactive sources from entering the country and moving beyond the border

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2
Q

What is radiation

A

Energy in motion either as particles or electromagnetic waves

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3
Q

What are the two types of radiation?

A

Non ionizing

Ionizing

Both occur naturally or man made

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4
Q

What is the difference between ionizing and non ionizing radiation

A

Energy levels

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5
Q

Which radiation has much higher energy level

A

Ionizing

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6
Q

Examples of non ionizing radiation we encounter every day

A
Visible lights
Microwaves
Infrared
Radio waves
Laser
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7
Q

Examples of common source of naturally occurring ionizing radiation

A

Cosmic radiation
Terrestial radiation
Food items( from diet)
Radon

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8
Q

Does non ionizing radiation have enough energy to change atomic structure?

A

No

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9
Q

Does ionizing radiation have enough energy to change atomic structure

A

Yes

Can cause damage to DNA in humans

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10
Q

What is radioactivity

A

Unstable atoms trying to become stable by emitting energy through radioactive decay

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11
Q

Radioactive materials

A

Source of ionizing radiation CBP is most concerned about

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12
Q

Atomic structure

Atoms are made up of

A

Protons( positive charge)
Neutron( neutral)
Electron ( negative charge)

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13
Q

What is an isotope

A

Atoms of the same element with different quantities of neutrons

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14
Q

Types of ionizing radiation

A

Alpha particles
Beta particles
Gamma rays
Neutron particles

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15
Q

Which type of radiation can enter body through ingestion, inhalation, open wounds

A

Alpha and beta radiation

16
Q

Which is the most dangerous kinds of radiation

A

Gamma and neutron

17
Q

Who must be contacted when neutron alert is confronted

A

Laboratory and scientific services

National Law enforcement communications center

18
Q

Radiation measurements

A
Rem
Millirem(1,000)
Microrem(1,000,000)
Dose( total amount of exposure)
Dosage rate( exposure based on time)
19
Q

How many millirems of radiation are humans exposed to annually

A

360

Cosmic sources
Terrestial sources 
Diet
Radon
Human beings
Masonry
20
Q

What is the acceptable mrem limit for cbp personel a year

A

100 mRem

Cbp employees should not be exposed more than 50 urem( microrem) per hour on a continuos basis

21
Q

Two types of radiation doses that will damage the human body

A

Chronic : small doses of radiation received over a long period of time

Acute: large doses of radiation receiving a short period of time

22
Q

What is ALARA

A

As low as reasonably achievable

23
Q

What are the three factors to consider when practicing ALARA

A

Time
Distance
Shielding

24
Radiation exposure practices
Identify and use available shielding Practice good hygiene Do not handle material needlessly Practice ALARA
25
Where can terrorist acquire radiological materials from
``` Research facilities Universities Medical equipment Medical isotopes Industrial facilities Radiographic sources Borehole survey sources Industrial sterilizers ```
26
What are INDs What are RDDs
Improvised nuclear devices (Nuclear material and require sophisticated skills to build) Radiological dispersal devices ( dirty bombs, use conventional explosives or dispersal devices with radiological materials
27
Radiation detection program
Screen 100% in bound traffic Physical inspection of all traffic is unrealistic Radiation detection devices scan most cargo
28
Legitimate commodoties
Naturally occurring radioactive isotopes (NAT) Isotopes used in industry (IND) Isotopes used in medical diagnosis (MED)
29
If you receive a radiation alert what should you do
SIN All radiation alerts must be resolved All neutron alerts LSS must be contacted
30
Radiation detection layered approach Cbp uses three devices, what are they
RPM PRD RIID
31
RPM detect very small amounts of radiation in primary, must all alerts be resolved Yes or no
Yes, must be secondary for complete resolution
32
PRD detect gamma and x ray?
Yes, indicate amount of radiation on scale 0-9
33
What does the RIID do
- Detects, locates, identifies radiation - Gamma and neutron - Facilitates resolution of PRD alert
34
What does LSS do
- Provide technical assistance and guidance - Must provide TAQ - May request isotope info from RIID
35
Radiation detection and program diractive
Provides guidance on program Describes procedures to follow to resolve radiation alarms All alarms must be resolved per cbp radiation directive
36
Responding to neutron alarm
Isolate source, establish perimeter Confirm presence of neutron 6 counts per second Contact LSS through NLECC
37
Prd alert
Isolate source 9 to 8 Establish perimeter If documentation, or reading not consistent with common innocent radiation sources checklist contact LSS through NLECC LSS determines whether hazardous radiological condition exist
38
Event documentation
- TAQ - IOIL - port management, sector, ICE, NTC, headquarters and situation room