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Full Description

Scope: This Standard covers design, protection, and installation of nuclear safety-related instrument-sensing lines and sampling lines for nuclear power plants. The Standard covers the pressure boundary requirements for sensing lines up to and including one inch (25.4 mm) outside diameter or three-quarter inch nominal pipe (19 mm). The boundaries of this Standard for instrument-sensing lines span from the root valve/piping class change, up to but not including, the manufacturer-supplied instrument connection. The boundaries of this Standard for sampling lines span from the process tap to the upstream side of the sample panel, bulkhead fitting, or analyzer shutoff valve, and include in-line sample probes.

Purpose: This Standard establishes the applicable code requirements and code boundaries for the design and installation of instrument-sensing lines interconnecting nuclear safety-related power plant processes with both nuclear safety-related and nonnuclear safety-related instrumentation. This Standard also establishes the applicable requirements and limits for the design and installation of sample lines interconnecting nuclear safety-related power plant processes with sampling instrumentation.This Standard addresses the pressure boundary integrity of an instrument-sensing line and sampling line in accordance with the appropriate parts of Section III, Boiler and Pressure Vessel Code, American Society of Mechanical Engineers (ASME) or American National Standards Institute (ANSI) B31.1, as applicable, and the assurance that the safety function of the nuclear safety-related instruments and process sampling is available.
 

Document History

  1. ISA 67.02.01-2014

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    Nuclear Safety-Related Instrument-Sensing Line Piping and Tubing Standard for Use in Nuclear Power Plants

    • Most Recent
  2. ISA 67.02.01-1999


    Nuclear Safety-Related Instrument Sensing Line Piping and Tubing Standards for Use in Nuclear Power Plants

    • Historical Version