Science

Question 1

K-40, Ra-226, Th-232, U-238 are examples of what type of radioactive isotopes?

Answer 1

Natural or NORM.

Question 2

Co-57, Co-60, Ba-133, Cs-137, Ir-192, Am-241, Se-75, Sr-90 are examples of what type of radioactive isotopes?

Answer 2

Industrial.

Question 3

U-233U, U-235, Np-237, Pu-239, Cf-252 are examples of what type of radioactive isotopes?

Answer 3

Nuclear.

Question 4

ALARA in radiation safety.

Answer 4

As Low as Reasonably Achievable.

Question 5

What are the 3 principles of radiation safety?

Answer 5

Time, Distance, Shielding.

Question 6

There are four main types of active security sensor technologies:

Answer 6

Microwave sensors, Ultrasonic sensors, Active Infrared (AIR) sensors, Dual technology sensors.

Question 7

What is half-life?

Answer 7

Time required for radioactive material to decrease by ½.

Question 8

Inverse square law (1/R2)

Answer 8

Triple the distance, cut exposure by 1/9th.

Question 9

What causes electrical changes in materials?

Answer 9

Ionizing Radiation.

Question 10

The same element, but with different number of neutrons is?

Answer 10

An Isotope.

Question 11

What is Half Value Layer (HVL)?

Answer 11

The thickness of a material that will stop half the x-rays.

Question 12

The EPA guidance on radiation dose limits for workers in an emergency response capacity for life-saving or protection of large populations is?

Answer 12

> 25 rem.

Question 13

Which is more radioactive 10 curies or 100 millicuries?

Answer 13

10 curies.

Question 14

Chronic Radiation Dose is a dose received in a short period of time (seconds, hours, minutes, days). T/F

Answer 14

False.

Question 15

Acute Radiation Doseis a dose received over a long period of time (months, years) .

Answer 15

False.

Question 16

The typical composition of Cs-137 and Ba-137m is?

Answer 16

Salt.

Question 17

The typical composition of Pu-238, Sr-90, Y-90, Se-75, and Po-210 can be?

Answer 17

Ceramic

Question 18

Three electrodes in a gas filled, hermetically sealed, pressurized envelope is known as a?

Answer 18

Triggered Spark Gap.

Question 19

A Self Breakdown Spark Gap has how many leads?

Answer 19

2, Adjacent and Opposite

Question 20

Uses high voltage trigger pulse to create thin ionized streamer between anode and cathode within a triggered spark gap?

Answer 20

Spark Gap Trigger Transformer.

Question 21

The basic components of a High Voltage Fireset are:

Answer 21

Battery, Transverter, Capacitor, Switch, Trigger, Load Ring, Detonators.

Question 22

What does a Transverter do?

Answer 22

Converts low voltage to high voltage.

Question 23

Define Fission.

Answer 23

The splitting of a atom by a neutron releasing energy.

Question 24

Define Fusion.

Answer 24

Fusing atoms together resulting in an energy release.

Question 25

IND isotopes:

Answer 25

U233, U235, Np237, Pu239

Question 26

RDD Isotopes.

Answer 26

Co60, Se75, Cs137, Ir192

Question 27

Neutron Emitters.

Answer 27

Pu, Californium, AmBe, PoBe

Question 28

Gamma and X rays are examples of ______ energy?

Answer 28

Photon

Question 29

Alpha, Beta, and Neutron are examples of ______ energy?

Answer 29

Particle

Question 30

2 Protons and 2 Neutrons are an _____ particle.

Answer 30

Alpha

Question 31

A positive or negative electron is a ____ particle.

Answer 31

Beta

Question 32

A neutrally charged particle is a ____.

Answer 32

Neutron

Question 33

The number of Protons in an atom determines the material. T/F

Answer 33

True

Question 34

The number of Neutrons in an atom determines the _____ and _______.

Answer 34

Isotope; Radioactivity

Question 35

Atomic mass is determined by?

Answer 35

Protons + Neutrons

Question 36

Annual dose limit is?

Answer 36

5R

Question 37

LD50/30 is?

Answer 37

The lethal dose to 50% of the population within 30 days (350-500R)

Question 38

RDD isotopes Ir192 and Se75 may hamper what diagnostic?

Answer 38

X-rays

Question 39

Ra226 is the daughter product of ____.

Answer 39

U235

Question 40

Am241 is the daughter product of ____.

Answer 40

Pu239

Question 41

Th232 is the daughter product of ____.

Answer 41

U233

Question 42

____ can cause a false alarm for U235.

Answer 42

Cs137