SITE EVALUATION

The main safety objective in evaluating the site for a research reactor is the protection of the public and the environment against the radiological consequences of normal and accidental releases of radioactive material. Information shall be collected in sufficient detail to support the safety analysis to demonstrate that the research reactor facility can be safely operated at the proposed site. For low power reactors, the amount of detail to be provided can be substantially reduced below that required for a medium or high power reactor (see also paras 1.11-1.14). The results of the site evaluation shall be documented and presented in sufficient detail to permit an independent review by the regulatory body. This may constitute the first part of the development of the SAR for the research reactor. 

In the evaluation of the suitability of a site for a research reactor, the following aspects shall be considered  

If the site evaluation for these five factors, including their foreseeable evolution, indicates that the site is unacceptable and these deficiencies of the site cannot be compensated for by means of design features, site protection measures or administrative procedures, the site shall be deemed unsuitable. (Design features and site protection measures are the preferred means of compensating for deficiencies.) 

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If powdered materials are being handled, does the site evaluate dust explosion issues ... 

Assists in identifying appropriate analytical laboratories to evaluate environmental samples (e.g., soil, water, sludge, waste, air) for characterizing hazards at a site. The system factors type of sample, suspected pollutants, user s needs for on-site evaluation, and laboratories locations, capabilities, and ( ualiricalions. 

Six of the eleven sites evaluated (Sites A, B, F, G, I, and K) identified generie remediation hazards in their SSAHPs but did not address the hazards assoeiated with site- and operation-speeifie tasks. For example, the SSAHP for Site B broadly deseribed hazards sueh as the potential for inhalation, ingestion, eontaet, and absorption of eontaminants or heavy equipment and general eonstruetion hazards. The plan did not deseribe speeifie hazards (i.e., levels of speeifie ehemieal eontaminants, the hazards related to the use of speeifie types of equipment) assoeiated with speeifie workplaee aetivities and their related eontrol measures. These general analyses do not provide employees with suflheient information to enable them to work safely, nor do they enable the employer... 

If the subcontractor supplies statistical data from the manufacturing process that indicates that quality is being controlled, then an analysis of this data based on assurances you have obtained through site evaluation can provide sufficient confidence in part quality to permit release into the organization. 

It will be shown that a more elegant and more easily applicable solution of the problem is given by choosing another reference system. Both the dilute alloy and the unperturbed host can be described with respect to a common reference system, which consists of the unperturbed part of the alloy system and for obvious reasons is called void system. This void system allows for a single-site evaluation of the matrix element describing the wind force in electromigration and the t-matrix element required for the calculation of the residual resistivity due to a saddle-point defect. 

The Environmental Protection Agency (EPA) identifies the most serious hazardous waste sites in the nation. These sites make up the National Priorities List (NPL) and are the sites targeted for long-term federal cleanup activities. Methyl parathion has been found in at least 16 of the 1,585 current or former NPL sites. However, the total number of NPL sites evaluated for this substance is not known. As more sites are evaluated, the sites at which methyl parathion is found may increase. This information is important because exposure to this substance may harm you and because these sites may be sources of exposure. 

Populations residing near hazardous waste disposal sites may be subject to higher levels of methyl parathion in environmental media (i.e., air, groundwater, soil) than those experienced by the general population. Methyl parathion has been identified in at least 16 of the 1,585 hazardous waste sites that have been proposed for inclusion on the EPA National Priorities List (NPL). However, the number of sites evaluated for methyl parathion is not known. As more sites are evaluated, the number of sites where methyl parathion has been detected may increase. 

The Department of Ecology strongly recommended against Superfund status on the grounds that the EPA site evaluation included a population impact based on the number of people who could have been affected in a three-mile radius instead of the population actually affected taking into consideration the directions of ground water movement. Providing the affected residences with a potable water supply by the Company and the impacts of total vs. free cyanide were discussed by EPA but were not used in the impact analysis. 

Additional work regarding the release rates of Th and U, and the weathering and retardation rates of U, is still required to complement site evaluations. 

While societal risk is generally applied to events that can impact the public, major accidents in chemical processing plants may also have the potential to affect large numbers of people. In particular, a single major event could affect multiple buildings and many individuals inside each building. Thus, the concept of societal risk can be applied to on-site risk evaluations as well as off-site evaluations. 

Sufficient suitable land must be available for the proposed plant and for future expansion. The land should ideally be flat, well drained and have suitable load-bearing characteristics. A full site evaluation should be made to determine the need for piling or other special foundations. 

Hydraulic fluid contaminants have been identified in at least 10 of 1,428 current or former NPL Sites (HazDat 1996). All of these sites are located in the conterminous United States. The frequency of these sites can be seen in Figure 5-1. However, the number of sites evaluated for hydraulic fluids is not known. 

Currie, C. K. (1995), Altered soils a need for a radical revision in policy, in Beavis, J. and K. Barker (eds.), Science and Site Evaluation and Conservation, Proc. Conf., Bornemouth Univ., Bomemouth, pp. 90-106. 

Pollard, A. M. (1995). Groundwater modelling in archaeology - the need and the potential. In Science and Site evaluation and conservation, eds. Beavis, J. and Barker, K., Occasional Paper 1, Bournemouth, Bournemouth University, pp. 93-98. 

Endrin has been identified in at least 102 of the 1,430 current and former hazardous waste sites that have been proposed for inclusion in the NPL (HazDat 1996), although the total number of sites evaluated for endrin is not known. The frequency of these sites can be seen in Figure 5-1. Of these sites, 102 are located in the United States. Endrin ketone has been identified in at least 37 of the 1,430 current and former hazardous waste sites that have been proposed for inclusion in the NPL (HazDat 1996). However, the number of sites evaluated for endrin ketone is not known. The frequency of these sites can be seen in Figure 5-2. Of these sites, 37 are located in the United States. 

Endrin aldehyde has not been identified in any of the 1,430 current and former hazardous waste sites that have been proposed for inclusion in the EPA National Priorities List (NPL) (HazDat 1996) however, the number of sites evaluated for endrin aldehyde is not known. 

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