ANSI/ISA-67.02.01:2021

ANSI/ISA-67.02.01-2021, Nuclear Safety-Related Instrument-Sensing Line Piping and Tubing Standard for Use in Nuclear Power Plants, provides detailed requirements for the design, installation, protection and maintenance of nuclear safety-related instrument-sensing and sampling lines in nuclear power plants. It covers pressure boundary integrity, mechanical design, routing, materials and quality assurance to help maintain the reliability and safety of critical instrumentation systems that support functions like emergency shutdown, containment isolation and reactor cooling.


Following this document helps meet regulatory codes such as ASME Section III and B31.1, reduces risks from common-cause failures and promotes personnel safety during sampling and maintenance. Whether you are designing, installing or maintaining these systems, this standard offers essential guidance for safe and effective performance under both normal and accident conditions.