ANSI/ISA-67.06.01:2023

1 Scope
2 Purpose
3 Definitions and terminology
4 Performance monitoring
5 General requirements for performance monitoring
5.1 General criteria
5.2 Test method considerations
5.3 Testing environment
5.4 Test interval
5.5 Preconditioning
5.6 Extent of testing
5.7 Test location
5.8 Equipment restoration
6 Test methods
6.1 Calibration
6.2 Channel checks
6.3 Functional tests
6.4 Response-time tests
7 Validation of test methods
8 Measuring and test equipment
9 Test results
10 Maintenance
Annex A References
Annex B Specific test methods for determining response time
Annex C Examples of methods to identify possible instrument channel degradation
Annex D Noise analysis techniques
Annex E Resistance temperature detector calibration
Annex F Practical considerations for pressure/differential pressure transmitter performance
verification
Annex G On-line monitoring introduction
Annex H Pressure and temperature correlation
Annex I Process estimation techniques
Annex J Sensing line response-time considerations
Annex K Thermocouple calibration and condition monitoring
Annex L Verifying the performance of neutron detectors
Annex M Preconditioning

ANSI/ISA-67.06.01-2023, Performance Monitoring for Nuclear Safety-Related Instrument Channels in Nuclear Power Plants, offers comprehensive methods for monitoring and testing nuclear safety-related instrument channels that measure pressure, temperature and neutron flux in power plants. It covers calibration, response-time testing, functional checks and on-line monitoring to help maintain accurate and reliable instrumentation essential for plant safety. Applying these practices allows for early detection of instrument degradation, supports regulatory compliance, reduces maintenance costs and contributes to safer, more efficient nuclear power plant operations. Following this standard equips users with the techniques to uphold system integrity and operational reliability.