ISMS GUIDELINES FOR FACILITY DISPOSITION AND
Current and past facility employees are interviewed, as appropriate, to gather information not
evident from document reviews.
Walkdowns are performed using a multidisciplined project team to assess and confirm existing
facility conditions and inherent hazards.
A determination is made on the need for additional characterization based on the level of
uncertainty regarding knowledge of hazards (e.g. hazardous substance type, form, quantity, and
locations) and data quality objectives.
Planning assumptions, such as planned work scope and end-points, are confirmed or modified
as appropriate, based on the additional information gained from facility hazard identification
Intrusive characterization activities are performed, as necessary.
Provisions are in place to protect workers performing facility walkdowns and characterization
activities. For decommissioning projects, a characterization HASP is prepared where required
by 29 CFR 1910.120.
A hazard categorization is performed in accordance with 10 CFR 830, Subpart B, and
DOE-STD-1027-92 for facilities with radiological hazards.
Facility Hazard Analysis
A determination is made on whether existing hazard analyses can be used for current
disposition activities based on the current scope of activities and the past safety basis.
A hazard analysis is performed by a multidisciplined team comprising (on an as-needed basis)
management, safety specialists, engineers, environmental protection specialists, and facility
The analysis evaluates the hazardous substance types and their related inherent harmful
characteristics, quantities and concentrations, form, location, and exposure mechanisms.
The safety basis is updated and kept current. The need for updates should be triggered by
changes in facility disposition phases, new hazards or changes to energy sources, and changes
to assumptions or commitments related to the safety basis. Previously conducted hazard
analyses should be made available for project team use.
The analysis is used as the common starting point for development of the appropriate hazard
analysis document (e.g., DSA or HASP), as well as emergency planning strategies.
The results of the integrated hazard analysis should be used as one of the inputs to the analysis
required by the NEPA process.
Task Hazard Analysis
A task hazard analysis is conducted for specific disposition work tasks and uses the facility
analysis information as the starting point, as well as an evaluation basis for the MOC process.