Example 9: Screening Task Hazard Analysis Against Existing Safety Basis

DOE-STD-1120-2005/Vol. 2

Example 9:

Screening Task Hazard Analysis Against Existing Safety Basis

A plutonium processing facility was entering deactivation. Although many of the activities were closely

related to the operations activities, the deactivation included many one-time tasks performed under

varying facility conditions that could have led to new or increased worker safety hazards. The work

team's planned work task was to remove residual plutonium material from gloveboxes. As part of this

process, a task hazard analysis was drafted. In order to verify that job hazards were not outside the

previously identified safety envelope, the task hazard analysis results were screened against the existing

hazard baseline document (e.g., facility DSA). The task hazard analysis identified potential hazards that

included personnel radiological exposure, criticality considerations, and physical hazards including

punctures and pinch points. Since these hazards were consistent with those encountered during glovebox

operations, and the controls were identified in both training and current procedures, no additional hazard

analysis was warranted for the planned activity. However, to ensure that the appropriate controls were

included in the work process, the evaluation was reviewed and approved by the criticality safety

representative, industrial safety representative, and radiological personnel. The work plan and final task

hazard analysis were completed and used in the pre-job briefing to ensure that personnel understood the

hazards and controls associated with the activity prior to beginning work.

HAZARD CONTROLS

Example 10:

Administrative Controls for a Non-nuclear Facility

A non-nuclear laboratory facility with gloveboxes was to be deactivated in preparation for long-term

S&M. An integrated hazard analysis was performed to identify the hazards and the requisite controls.

The analysis considered hazards related to the storage of chemicals, as well as those hazards introduced

from the chosen work methods.

The analysis identified three administrative controls that supported and enhanced existing programmatic

health and safety controls. These controls specify that: (1) all hazardous substances be inventoried and a

"living" inventory be maintained and updated on a weekly basis; (2) all hazardous substances to be

brought into the facility, proposed activities, new (or changes to) procedures, and discoveries be screened

and hazards analyzed as necessary, using a management of change process; and (3) all tasks have an

initial hazard analysis performed the first time the activity is completed. In addition, industrial safety, IH,

and health protection personnel; workers; and the facility supervisor reviewed and approved identified

worker safety controls. In order to ensure proper implementation of these controls, all facility workers

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