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| DOE-HDBK-1184-2004
TWDs should be developed and implemented for any task that requires more
detailed written guidance than that provided in the generally applicable procedures.
Chapter 3 of the Radiological Control Standard (RCS) provides guidance for
implementing a system of TWDs.
Radiological Work Permits
Radiological Work Permits (RWPs) are used to establish specific radiological
control requirements for work in areas that exceed, or have the potential to exceed
specified radiological hazard levels. This would usually include tasks that require
specific worker actions due to the likelihood of severe radiological consequences,
such as surface contamination levels or airborne radioactivity levels exceeding 100
times the applicable Appendix A or Appendix D levels, respectively. The RWP
should address those issues discussed in the RCS, with emphasis on conditions
and controls that are related to the presence of STCs. Chapter 3 of the RCS
provides guidance for developing and implementing RWPs.
Administrative System Integration
The components of the administrative system are usually linked. For example, the
administrative system may address the requirements for repairing a component
located in a contamination area as follows:
A written procedure establishes standard requirements for entering a
contamination area;
Another written procedure establishes criteria (radiological conditions, work
activities, etc.) that require specific tasks to be performed in accordance with an
RWP/TWD;
The TWD establishes specific requirements (e.g., valve operation sequences,
torque settings, sequence of operations, etc.) for performing the task; and
The RWP provides more detailed radiological control requirements for repairing
the component within the specified contamination area.
Pre- and Post-Job Briefings
For higher hazard work, many facilities include requirements for pre- and post-job
briefings in the RWP. The pre-job briefing provides an opportunity to discuss the
details of the job, its hazards, and required controls with affected workers. The
post-job briefing provides an opportunity to review the completed work, identify both
strengths and weaknesses associated with its planning and performance, and
institutionalize these lessons for future reference. Briefings may also be conducted
during job performance to analyze the current status and address emergent issues.
The thresholds and processes associated with briefings for STC work need not
differ from those for other jobs. However, special attention should be paid to STC
identification and control issues. Mechanisms should be in place to capture any
lessons learned, not only for similar work, but for both similar and dissimilar work
involving STC hazards. Specific guidance is provided in Chapter 3 of the RCS.
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