Hazard and Accident Analysis - DOE-STD-1120-1-20050030

DOE-STD-1120-2005/Vol. 1

Waste Stabilization (e.g., grout injection) in soil waste matrix stabilization where the form

of the matrix is modified to a less dispersible form through the addition of grout or similar

stabilizing material

Waste Exhumation and Elimination (retrieval and shipment to a different location for

processing, treatment, storage and/or final disposal) eliminates the retrieved waste from the

restoration site inventory.

Ground or Surface Water Restoration (collection and/or treatment of contaminated soil,

surface and ground water)- activities and processes that clean-up existing contaminants from

industrial or waste management sources or minimize the spread of contaminants resulting

from releases of hazardous waste, hazardous constituents, or radiological contaminants to

surface and/or ground water, and soils.

There is also the possibility to have combinations of these restoration approaches, which can add

to the complexity of the activity. In-situ vitrification is not a restoration technique that is

considered within the scope of environmental restoration projects discussed in this standard.

This process involves the addition of substantive energy and introduces potential dispersive

mechanisms that are better suited to evaluation using DOE-STD-3009.

4.2

Hazard and Accident Analysis

Overall, this section of the DSA should present the methodology used to identify and evaluate

hazards, as well as the results of these efforts. The hazard and accident analysis approach

presented in DOE-STD-3009-94, Chapter 3, should be applied to environmental restoration

projects with additional clarifications provided in the following subsections below.

4.2.1Methodology

4.2.1.1

Hazard Identification

This subsection of the DSA should identify the methods used by analysts to identify hazardous

material inventories and energy sources that could initiate or contribute to accidents impacting

workers, the public or environment. Identifying the hazards is an output from the work/scope

description. The identified hazards will be used in the Hazard Categorization and also in the

Hazard Evaluation that develops the hazard controls applicable to the project. Hazard

constituents include radionuclides, chemical substances (hazardous, toxic, reactive or flammable

elements, compounds, and or mixtures), and energy sources (chemical, mass/motion, fire

ignition sources radiant, thermal, radiation/radiolysis, etc.). Consideration of fire hazards should

include intrinsic hazards associated with remaining hazardous or radioactive inventory, as well

as those introduced by equipment and techniques used in the process. Hazardous constituents

and sources need to be identified early in the safety basis process. Depending on the availability

of process and/or historical data and the confidence in that data, there may need to be an early

phase of investigation/sampling to develop a hazard inventory/energy listing that will bound and

represent all activities to be conducted in the various phases of the restoration.

Hazardous material inventory data may be unavailable or incomplete for many restoration

projects. This will necessitate intrusive or non-intrusive characterization, depending on the

level of hazards information available to support a defensible analysis. The need for intrusive

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