IEEE 336-2010

IEEE 336-2010 is a technical standard for the installation, inspection, and testing of Class 1E power, instrumentation, and control equipment at nuclear facilities. It addresses practices that help verify these safety-related systems are properly installed and remain suitable for service. For nuclear engineering applications, this matters because consistent field work and testing support equipment reliability, documentation quality, and safer operation under demanding conditions.

IEEE 336-2010 overview

This recommended practice focuses on Class 1E equipment, the category typically associated with nuclear safety functions. IEEE 336-2010 provides guidance for installation, inspection, and testing activities so that power, instrumentation, and control components are handled in a controlled and verifiable way. In practice, it supports engineering teams responsible for field acceptance, maintenance planning, and quality checks during construction or plant modification work. The standard is especially relevant where repeatable procedures and traceable results are important.

Typical use cases

IEEE 336-2010 is commonly used when specifying or verifying installation and test work for safety-related electrical and control equipment in nuclear facilities. It may apply to switchgear, control panels, instrumentation circuits, and related systems that support Class 1E functions. Engineers, inspectors, and maintenance personnel can use it to align job procedures, acceptance checks, and test documentation. It is also useful during retrofit projects, commissioning, periodic inspection, and maintenance planning where controlled workmanship is essential.

Why this standard matters

This standard matters because Class 1E equipment must perform reliably when it is needed most. IEEE 336-2010 helps reduce variation in how equipment is installed, inspected, and tested, which can lower the risk of workmanship issues and testing gaps. It also supports procurement and compliance activities by giving project teams a common technical reference. For nuclear facilities, that consistency can improve safety assurance, simplify reviews, and make performance expectations clearer across disciplines.

• Class 1E power, instrumentation, and control equipment
• Installation and field verification practices
• Inspection and acceptance testing guidance
• Nuclear facility safety-related applications
• Controlled documentation and compliance support