Conduct of Radiological Work
Optimization techniques, such as cost-benefit analyses, represent a fundamental part of radiological design analysis
and work review. For review of minor activities with low associated doses, a cost-benefit evaluation is an intrinsic
part of the engineering review process and a detailed evaluation is not necessary. For review and planning of major
tasks involving higher collective dose expenditures, a detailed and documented evaluation should be performed.
313 Infrequent or First-Time Activities
In addition to the planning provisions of Article 312, special management attention should be directed to radiological
activities that are infrequently conducted (i.e., activities for which there is insufficient facility or worker planning and
execution experience to provide assurance of adequate radiological controls) or represent first-time operations. Planning
for such activities should include:
Formal radiological review in accordance with Article 312.4
Senior management review directed toward anticipation of concerns and emphasis and specification of protective
Review and approval by the ALARA Committee
Enhanced line and radiological control organization management oversight during the initiation and conduct of the
The extent of the formal radiological review should be commensurate with the expected and potential hazards and
314 Temporary Shielding
The installation, use, and removal of temporary shielding should be controlled by procedure.
The effects of the additional weight of temporary shielding on systems and components should be evaluated and
established to be within the design basis prior to installation.
Installed temporary shielding should be periodically inspected and surveyed to verify effectiveness and integrity.
Installed temporary shielding should be periodically evaluated to assess the need for its removal or replacement
with permanent shielding.
Radiation surveys should be performed during the alteration or removal of installed temporary shielding.
Installed temporary shielding should be visibly marked or labeled with the following or equivalent wording:
"Temporary Shielding - Do Not Remove Without Permission from Radiological Control."
Site procedures may identify specific shielding applications, such as the shielding of low activity sources or
samples, that fall outside the recommendations of this Article.