Air - doe-hdbk-1108-2002_reaffirm20070034

DOE-HDBK-1108-2002

Radiological Training for Accelerator Facilities

Instructor's Guide

Lesson Plan

Notes

Air

(Facility Specific)

Each Facility

Air, dust, and other gases in the accelerator enclosure may be

should cover their

activated. Typically, the activation products are short-lived

nuclides of concern,

gaseous radionuclides of the elements in the air or particulate,

such as:

in the case of dust particles. An example is Oxygen-15 from

O-15

Nitrogen-14.

N-13

C-11

Cover facility's

procedures for

entering enclosure

after beam shut-off.

Liquids

(Facility-Specific)

Cooling water: used for cooling beamline components

Include likely

(activation products such as tritium (H-3), beryllium

facility locations.

(Be-7) and possible pipe wear products or erosion of

the pipe surfaces).

See Section VI, for

methods to dispose

Oil in vacuum pumps (beam line components).

of activated liquids.

Cryogenic fluids: liquid helium and nitrogen are used

frequently to cool components.

Facility-Specific

EO-08 IDENTIFY

activation sources at

Facility should cover items that routinely become activated

site.

due to accelerator operation.

Contamination

Materials and activities that could create contamination

Cover each source

concerns.

as applicable to the

facility.

a. Surface coating: such as paint, oxidation, and rust may

present a contamination problem. Such coatings may be

easily removable and may be present in areas not

commonly accessed, such as beam dump vaults.