Document: NUREG-0800
Document ID: 00471f3b-36d9-4ce3-af70-d4dac9bb0e67
Document Type: srp
Title: Draft Revision 6 – August 2015
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159A809.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
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CFR Title: 

Content:
rveillance data • Control/protection interaction or common-cause failure during in-situ testing 2. Information to be Reviewed The information to be reviewed consists of specifications, drawings, and analyses of the proposed RTD cross-calibration program. 3. Acceptance Criteria Supporting Analysis Analyses, and information on the instrument maintenance and calibration program should be provided to support the adequacy of the cross-calibration program. The analysis should, as a minimum, address the following topics. • Justification that the cross-calibration program is consistent with the characteristics of the RTD sensors, including RTD specifications, range, accuracy, repeatability, dynamic response, installed configuration, environmental qualification, calibration reference, calibration history, and calibration intervals. • The specific methods or analyses used for signal conditioning or processing (for example, averaging, biasing, failure detection, data quality determination, and error compensation). • The planned process for cross-calibration and response time determination. • Justification that the performance requirements and failure criteria assumed in the plant accident/event analyses are satisfied by the cross-calibration process and testing results. BTP 7-13-5 Draft Revision 6 – August 2015 • The technical basis for the acceptance criteria and values of cross-calibration points monitored in-situ throughout the RTD range, to ensure that the data are adequate for detecting degradation or systematic drift. Traceability of the Installed Reference RTD to Laboratory Calibration Data Laboratory calibration involves measuring the RTD's resistance at several known temperatures. The data are then used to provide a calibration curve for the device. In addition, the RTD response time can be determined under laboratory conditions using controlled temperature baths and a methodology to calculate the RTD response time over the measuring temperature range.