Coatings to Facilitate D&D

DOE-HDBK-1132-99

Modularized radiation shielding, in lieu of or in addition to monolithic shielding

walls, should be used for ease of maintenance and decommissioning.

Coatings to Facilitate D&D . To facilitate D&D, the following should be

2.12.4

considered:

American Society for Testing and Materials (ASTM) D4258, Standard

Practice for Surface Cleaning Concrete for Coating, provides guidance for

facilities that require coatings to enhance decontamination of surfaces or

because of environmental conditions.

Selection of floor and walkway coverings should consider ease of

decontamination. To the extent practical, floor-to-wall interface joints

should be covered for ease of decontamination.

Bare floors, walls, and ceilings should be protected, particularly for

structurally important parts of the building. Protection should be in the

form of strippable or durable coatings for which effective cleaning

methods have been developed.

Surfaces in operating or process areas should have no rough or

absorbent surfaces, seams, or cracks.

For water-pool type facilities, the pool liner should be provided with a

leakage detection and collection system to limit absorption of

contaminated pool water by concrete structures.

2.13

D&D AND ENVIRONMENTAL REMEDIATION PROJECTS

Introduction . In many instances, an existing DOE facility that must be

2.13.1

decontaminated and decommissioned does not have a D&D plan and

procedures in place that were implemented in the original facility design. In

addition, DOE has a wide variety of facilities that will undergo D&D. These

facilities are in various present-day conditions of safe layaway or operation.

Six essential functional areas should be considered during D&D plan

development in order to develop a total system to solve the complex problems

related to the cleanup activities associated with D&D:

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