ISA-RP67-04-02-2000
Methodologies for the Determination of Setpoints for Nuclear Safety-Related Instrumentation ISBN: 978-1-55617-720-0
Published: 2000
Length: 156 pages

Price: $145.00

This recommended practice provides guidance for the implementation of ANSI/ISA-S67.04.01-2000 in the following areas:

• Methodologies, including sample equations to calculate total channel uncertainty;
• Common assumptions and practices in instrument uncertainty calculations;
• Equations for estimating uncertainties for commonly used analog and digital modules;
• Methods to determine the impact of commonly encountered effects on instrument uncertainty;
• Application of instrument channel uncertainty in setpoint determination;
• Sources and interpretation of data for uncertainty calculations;
• Discussion of the interface between setpoint determination and plant operating procedures, calibration procedures, and accident analysis;
• Documentation requirements.

The purpose of this recommended practice is to present guidelines and examples of methods for the implementation of ANSI/ISA-S67.04.01-2000 in order to facilitate the performance of instrument uncertainty calculations and setpoint determination for safety-related instrument setpoints in nuclear power plants.