Dose Limits for Exposure to Ionizing Radiation

A collection of key terminology and definitions related to dose limits for ionizing radiation, designed to aid in understanding radiation safety regulations and practices.

Title 10 of the CFR part 20

The rules and regulations of the NRC and fundamental radiation protection standards governing occupational radiation exposure are included in this document

NRC

Is the agency that is responsible for regulation of nuclear power?

Nuclear regulatory commission

NRC

National council on radiation protection and measurements

NCRP

NCRP

What is the most important organization for radiation protection in America?

NCRP report NO.116 and ICRP report NO.60

Resource for revised recommendation on basis of effective dose limiting systems are

ICRP, NCRP, UNSCEAR, NAS/NRC – BEIR

What are the four major organization responsible for evaluating a relationship between radiation EQD and induced biologic effects

Health and safety act of a 1981

What law sets minimum educational standards for x-ray or a CT techs

Follows guidelines for radiation protection

What does a RSO do?

NCRP , 1954

The ALARA concept started by the …. In the yr

Radiation safety committee , Provides guidance for the program

What is the RSC and what does it do?

380

……. Msv is the lifetime dose limit for a 38-year-old person

NRC

The….. is the organization that all paperwork for the RSO is filed with

.12

….. is the tissue weighting factor for the lungs

.20

….. is the tissue weighting factor for go

10, 35.24

Title…. Part……. Of the CFR sets the authority of the RSO.

3

How many training pathways are there for an RSO?

1954 by NCRP

Alara put forth in what date by who

August 1, 1974

Code of standards for diagnostic x-ray equipment went into effect on

FDA

CDRH falls under the jurisdiction of what administration

center for devices and radiologic health

Cdrh

Health and science act of 1968 (public law 90-602)

To protect the public from the hazards of unnecessary radiation exposure, resulting from electronic products and diagnostic x-ray equipment

Law 90 - 602

Law.Does not regulate the diagnostic x-ray user it is strictly an equipment performance standard

10 CFR 35

Training for an RSO is covered and where

Equivalent Dose (EqD)

A dose that takes into account the type of radiation and the sensitivity of the tissues affected.

National Council on Radiation Protection and Measurements (NCRP)

An organization responsible for collecting and disseminating information and recommendations about radiation protection.

Radiation Safety Officer (RSO)

A qualified individual designated to oversee the radiation safety program within a facility.

Deterministic Effects

Biological effects of ionizing radiation that are directly related to the dose received and have a threshold dose.

Negligible individual dose

Nid

Person SV

The unit to express the quantity of collective EFD

What’s the occupational risk for the chance of fatal accident over an entire career?

2.5%

Stochastic Effects

Randomly occurring biological effects of ionizing radiation that increase in probability with each exposure without a threshold.

Tissue Weighting Factor (WT)

A factor that accounts for the relative risk of cancer and hereditary effects from exposure to radiation for different tissues.

Cumulative Effective Dose (CumEfD)

The lifetime EfD limit calculated as the individual's age in years multiplied by 10 millisieverts (mSv).

Consumer-Patient Radiation Health and Safety Act of 1981

Legislation requiring minimal standards for the accreditation of education programs for individuals performing radiologic procedures.

Radiation Hormesis

A hypothesis suggesting that low doses of radiation might have a beneficial effect, contrasting the traditional view of all radiation exposure being harmful.

Radiation Control for Health and Safety Act of 1968

A law aimed at protecting the public from unnecessary radiation exposure from electronic products and diagnostic equipment.