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Page Title:
Special controls and considerations at uranium operations |
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|  Radiological Assessor Training
DOE-HDBK-1141-2001
Student's Guide
DOE-STD-1121-99, Internal Dosimetry, provides
technical guidance on internal dosimetry
programs, including evaluation of occupational
internal doses from exposure to radon and
thoron. This standard should be reviewed prior to
conducting assessments of internal dosimetry
programs.
VII. Special controls and considerations at uranium
operations
A. Criticality alarm systems (gamma or neutron)
shall be provided in each area where an
accidental criticality is possible. Site
requirements documents relating to criticality
alarms should be reviewed prior to the
assessment, if applicable. These
requirements may include: ANSI/ANS 8.1,
Nuclear Criticality Safety in Operations with
Fissionable Materials Outside Reactors;
ANSI/ANS 8.3 Criticality Accident Alarm
Systems; ANSI/ANS 8.7, Nuclear Criticality
Safety in the Storage of Fissile Materials;
ANSI/ANS 8.15, Nuclear Criticality Control of
Special Actinide Elements; and ANSI/ANS
8.19, ANS Administrative Procedures for
Nuclear Criticality.
B. All DOE facilities that possess sufficient
quantities and kinds of fissile material to
constitute a potentially critical mass shall
provide nuclear accident dosimetry (fixed and
personal). The number of dosimeters needed
and their placement will depend on the nature
of the operation, structural design of the
facility, and accessibility of areas to
personnel. An analysis of the dosimeters and
their placement should be conducted and
documented.
Module 6 - 9
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