Site characteristics

Given that the foregoing criteria are met, it is good practice for a nuclear plant site to have certain characteristics objectively favourable to its installation, either in normal operating conditions and in a hypothetical emergency. In particular, the following characteristics are noted  

Other essential characteristics of a site are not listed here because they essentially bear on productivity issues, even if they may have an influence on safety too. For example, land average slope (the slope of the surroundings should be compatible with the transportation of huge components) or the availability of abundant quantities of water for the normal cooling of the plant besides the availability of smaller amotmts of water for shutdown or emergency conditions. 

Information should be provided in sufficient detail to support the analysis and conclusions of Chapter A. 16 (Safety Analysis) to demonstrate that the reactor facility can be safely operated at the proposed site. For many low power reactors, which present very limited hazards, the amount of detail provided in this chapter can be substantially reduced. 

If a separate site evaluation report has been prepared, it should be referenced, and only a summary should be presented in this chapter. 

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Site data should be reviewed to identify conditions that may limit or promote the use of certain technologies. Technologies whose use is clearly precluded by site characteristics should be eliminated from further consideration. 

PSAs estimate that the frequency of reactor damage cover about two orders of magnitude from about lE-5/y to lE-3/y. This variation is attributable to plant design, construction, and operation, to site characteristics, scope of the PSAs, and methods and analytical assumptions. Such comprehensive studies of comparable chemical process plants do not exist. 

Site characteristics Releases occurred in settings ranging from rural to very congested industrial areas. 

T-tubule is a transverse invagination of the plasma membrane, which occurs at the specified sites characteristic to animal species and organs, i.e. at the Z-line in cardiac ventricle muscle and non-mammalian vertebrate skeletal muscle and at the A-I junction in mammalian skeletal muscle. It is absent in all avian cardiac cells, all cardiac conduction cells, many mammalian atrial cells and most smooth muscle cells. T-tubule serves as an inward conduit for the action potential. 

Schulz-Gasch T, Stahl M. Binding site characteristics in structure-based virtual screening evaluation of current docking tools. J Mol Model 2003 9 47-57. 

Clustered sites would be located within a single ecoregion or at least have similar ecological characteristics (e.g., southeastern coastal plain streams), and would consist of a series of geographically proximal locations (approximately 10 to 20 water bodies) where similar atmospheric loads (or load reductions) are anticipated. Cluster sites would be sampled on a routine basis (e.g., quarterly) for a prolonged period of time. Individual sites within a cluster would be specifically chosen to represent a range of site characteristics that are known to affect Hg cycling (e g., pH, DOC,... 

The number of sites needed for a successful study often depends on specific site characteristics such as the following ... 

Analyzing the collected existing data, including site characteristics, history of site (including disposal practices, disposal locations, disposed waste condition, waste degradations, storage of raw materials)... 

Site characteristics, which may limit or promote the use of certain remedial technologies... 

Corrosion and poor installation are by far the most common causes of storage system leaks. The most common causes of release from bare-steel UST systems are galvanic corrosion and the breakdown of hard refined steel to its natural soft ore. Because older USTs are usually constructed from bare steel, corrosion is believed to be the leading factor contributing to release. The speed and severity of corrosion varies depending on site characteristics, such as soil conductivity,... 

Regional climate should be the first consideration when evaluating the suitability of an alternative landfill cover for a site. If the regional climate appears to be compatible with the requirements of the alternative cover, then site characteristics should be examined to determine whether the site climate is also suitable. Site and regional climate may differ substantially for sites near mountains, in valleys, in the rain shadow of coastal mountains, or near the coast. The Air Force Center for Environmental Excellence commissioned a generic assessment of the suitability of the ET landfill cover based on regional climate for the continental United States.4... 

Jordan, B. A. (2001), Site characteristics impacting the survival of historic waterlogged wood - a review, Int. Biodeter. Biodegrad. 47(1), 47-54. 

The basic reactions of thiolsulfonates have been known for sometime (Field et al., 1961, 1964), but more recently, they have been applied to the study of protein interactions by site-directed modification of native cysteines or through modification of cysteines introduced at particular points in proteins by mutagenesis. Such studies have yielded insights into the structure and binding site characteristics of proteins (Kirley, 1989). Pascual et al. (1998) used AEAETS to probe the acetylcholine receptor from the extracellular side of the membrane in order to investigate the molecular accessibility and electrostatic potential within the open and closed channel. 

Table 1. Site characteristics of the selected soil profiles with different elevations at the Dinghushan Biosphere Reserve, South China...

In this section a comparison is presented between the PNEC of LAS for the various environmental compartments, based on the calculations in the comprehensive risk assessment study conducted by HERA (Human and Environmental Risk Assessment on ingredients of European household cleaning products) [16], and the concentrations of LAS measured at different locations covering a broad range of distinct site characteristics (hydrological settings, discharge situation, climatic conditions). 

Site Characteristics That Control Aquifer Bioremediation... 

Careful planning of the initial investigation activities is very important because this task sets the stage for future decisions and actions. Physical site characteristics, extent and intensity of contamination, cultural features, and historical background are confirmed in this project phase. Cleanup levels, potential remedial schemes, and probable costs are established with the data derived from the initial work. Regulators typically set conservative closure standards to assure public safety. Once these are established, it is difficult to modify them. Therefore, a truly representative site investigation must be completed before any remediation levels are set. 

The state-of-the-art as it emerges from the book, is that bioremediation and phytoremediation are both applied, in most cases, without a precise and detailed knowledge of all molecular mechanisms occurring within cells. This can have consequences on several aspects, and especially concerning decisions to be taken case-by-case according to site characteristics, type of pollutant(s) and endpoints to be reached. 

The plot in (b) refers to a similar interaction with the carboxymethylated derivative of carbonic anhydrase (Prob. 19). Aromatic sulfonamides are powerful inhibitors of the action of the enzyme and are useful probes of the site characteristics. 

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