PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR

Introduced: September 1968

Classification Context

Section:: PHYSICS
Class:: NUCLEAR PHYSICS; NUCLEAR ENGINEERING
Subclass:: PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR

Description

G21F covers shielding systems, protective devices, and structural arrangements designed to attenuate or block ionizing radiation including X-rays, gamma rays, and particle beams. This subclass encompasses radiation shielding materials, barrier designs, protective clothing, and biological shielding solutions for personnel and equipment in nuclear facilities, medical environments, and industrial applications. G21F also includes methods and apparatus for decontamination of radioactively contaminated materials, facilities, and equipment, as well as techniques for treating or neutralizing radioactive contamination. Adjacent classifications such as G21C (nuclear reactor core engineering) and G21H (controlled thermonuclear fusion) are distinguished by their focus on reactor operation rather than radiation protection itself.

Scope Notes

Limiting references: Use of cosmetics or similar toilet preparations already classified as such in when brought into direct contact with the skin (i.e. topical preparations) for affording protection against X-rays or other harmful rays Radiation protection in cosmonautical vehicles Shielding structurally associated with a reactor Vessels, containers or shields associated with X-ray tubes X-ray producing apparatus involving X-ray tubes; constructional details thereof; control thereof; circuits therefor , , Apparatus or processes for producing X-rays, not involving X-ray tubes, e.g. involving generation of a plasma | Application references: Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment; application or adaptation of safety means therefor Applying radioactive material to the body; shielding of fluid reservoirs therefor, e.g. syringe shielding

Related Keywords

CONTAINER(S) shielded against nuclear radiationprotection against CORPUSCULAR radiationDECONTAMINATIONprotection against radioactive FALL-OUTprotection against GAMMA-RADIATIONPACKAGING of solid radioactive wasteprotection against radiation from sub-atomic PARTICLESprotection against X-rays or nuclear RADIATIONcontainers for RADIOACTIVEprotection against RADIOACTIVITYSHIELD(S) against X- or gamma-radiationprotection against X-RAY(S)

5 direct subcodes

Child Classifications

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G21F 1/00 Shielding characterised by the composition of the material
G21F 3/00 Shielding characterised by its physical form, e.g. granules, or shape of the material
G21F 5/00 Transportable or portable shielded containers
G21F 7/00 Shielded cells or rooms
G21F 9/00 Treating radioactively contaminated material; Decontamination arrangements therefor