Format description

This chapter discusses the logic and content of the detailed design descriptions of the reactors included in chapers 5-7 of this report. 

Nuclear power technology development is a wide and diverse area. Three main development lines have existed for a long time and all have developed designs that are either readily available or will be available in the future. The technology of each line is substantially different in the physics and the hydraulics of the reactor. 

These three main lines, as defined by their primary coolant are water cooled, gas cooled, and liquid metal cooled. Water cooled reactors can be fiirther categorized as heavy water or light water moderated reactors. The design approach for a given system can be substantially different from another system within the same technology line. The small and medium reactor area has to deal with all technological lines and all varying approaches. The relevant reactor information for the purpose of this TECDOC has been divided into six parts  

Chapters 5-7 provide the technical descriptions of some of the small and medium size reactors which have been developed or are currently under development in various Member States. These descriptions include more detailed information in a consistent and systematic way, than has been provided in earlier Agency publications. The following sections are descriptions of the format used for the six different areas mentioned above. 

Item one gives the main design objectives and highlights the main design features as seen by the vendor or designer. The design description section is broken down into the different systems and features as follows. 

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PDB Format Description http //wmv.rcsh.Org/pdh/docs/format/pdbguide2.2/... 

Zindel U., Freudenberg W., Rieth M., Andreesen 1. R., SchneU L, and Widdel F. (1988) Eubacterium acidaminophilum sp. nov., a versatile amino acid-degrading anaerobe producing or utilizing H2 or formate description and enzymatic studies. Arch. Microbiol. 150, 254-266. 

Web-. The Internet de facto standard, consisting of a transport protocol called HM, a document format description standard called HTML, and a variety of graphic and video standards, so that users can access linked multimedia documents placed on Web servers fi om anywhere... 

Patuxent Formation Description of Sampies from the Patuxent Range... 

Form the stmcture formation description appears that the ions Zn + occupy the tetrahedral interstices, then CA/, 2+ = 4. Compulsory, also the ions S should be tetrahedrally surrounded, then CN 2- - 4. 

Each format description that follows includes its domain (the elements that are covered), its history and expected future path, distinctive characteristics, and a short example. Format description references can be found at the end of the chapter. 

ODB-r-r is widely used in the PCB industry and many vendor tools support it, including some CAD systems that offer output to ODB-h- format. Description of all ODB-m- format elements is beyond the scope of this chapter, but a small excerpt from a layer features file, shown in Fig. 18.17) can exemplify its explicitness and its clarity. 

IPC-2581 is actually a series of IPC-258x documents, where x represents 1-9 IPC-2581 consists of the generic requirements (or, in this case, the full format description), whereas IPC-2582 and above are sectional requirements. IPC-2584, for example, contains the sectional requirements for fabrication and explains which generic IPC-2581 elements are required for bare-board fabrication and which elements are optional. 

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