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Handling Individuals Exposed to Airborne Radioactivity - std109899cn10123
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Radiation Exposure Monitoring - std109899cn10125


DOE-STD-1098-99
Radiological Control
Radiological Health Support Operations
June 2004
PART 5 Radiological Monitoring
551 General Provisions
Workplace monitoring provides a basis for posting and labeling, development of RWPs and other work authorizations,
implementation of ALARA measures, issuance of individual monitoring devices, and verification of the efficacy of design
measures and engineering controls. Development of a workplace monitoring program sufficient to meet the provisions of
this chapter should include consideration of these factors to ensure the adequacy of the program.
1.
Radiological monitoring of radiation exposure levels, contamination, and airborne radioactivity shall be conducted
to:
a.
Characterize workplace conditions and detect changes in those conditions [see 835.401(a)(2) & (3)]
b.
Verify the effectiveness of physical design features and engineering and process controls [see 835.401(a)(5)]
c.
Demonstrate regulatory compliance [see 835.401(a)(1)]
d.
Detect the gra dual buildup of radioactive material in the workplace [see 835.401(a)(4)]
e.
Identify and control potential sources of personnel exposure [see 835.401(a)(6)]
f.
Determine exposure rates during each entry to a high or very high radiation area [see 835.502(a )(1)].
2.
Monitoring shall be performed only by individuals who have the appropriate education, training, and skills [see
835.103]. The instruments used shall be [see 835.401(b)]:
a.
Periodically maintained and calibrated
b.
Appropriate for the types, levels, and energies of radiation to be detected
c.
Appropriate for existing environmental conditions
d.
Routinely tested for operability.
3.
Monitoring for radiation, contamination, and airborne radioactive materials should be performed as specified in
technical work documents and radiological work permits.
4.
The radiological control organization should perform and document a review of the adequacy of sampling and
monitoring programs as part of any facility or operational changes affecting radiological control. In the absence of
such changes, a review should be conducted annually.
5.
Instruments used to perform radiation monitoring should be performance-checked daily or, if not checked within the
past 24 hours, prior to operation. When performance checks are not within 20 percent of the expected value, the
instrument should be taken out of service. When performance checks are not feasible, such as with instruments
used to measure neutrons or tritium, compensatory actions should be established to ensure proper instrument
performance.
6.
Monitoring of radiological conditions should include a sufficient number of survey points to characterize the
radiation present and to verify boundaries.
7.
Monitoring should be performed before, during, and at the completion of work that has the potential for causing
changes in levels of radiation and radioactivity.
8.
Monitoring frequencies should be established based on potential radiological conditions, probability of change in
conditions, and area occupancy factors.
5-14


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