IEEE PC37.98/D2, Aug 2022 is a draft standard for seismic qualification testing of protective relays and auxiliaries used in nuclear facilities. It focuses on how these devices are evaluated for performance under earthquake conditions, where dependable operation can affect plant safety and control integrity. For engineers working at the intersection of geoscience, nuclear engineering, and power applications, IEEE PC37.98/D2, Aug 2022 provides a technical basis for assessing whether protective equipment can withstand and function through seismic events.

What is IEEE PC37.98/D2, Aug 2022?

This document addresses the testing approach for protective relays and auxiliary equipment that support electrical protection functions in nuclear installations. It is intended to guide seismic qualification, helping confirm that devices maintain required behavior when exposed to vibration and earthquake-related stresses. As a draft IEEE standard, IEEE PC37.98/D2, Aug 2022 is especially relevant to specifications, test planning, and design verification where environmental qualification and equipment reliability must be demonstrated with care.

Where is IEEE PC37.98/D2, Aug 2022 used?

IEEE PC37.98/D2, Aug 2022 is used in nuclear facility electrical systems where protective relays and associated auxiliaries must remain dependable during seismic conditions. It is relevant to engineering teams evaluating relay panels, protection schemes, control cabinets, and supporting devices tied to safety-related or mission-critical power functions. The standard is most useful during qualification testing, procurement review, and documentation of compliance for equipment intended for nuclear plant environments.

Why is IEEE PC37.98/D2, Aug 2022 important?

This standard matters because seismic qualification is a key part of managing risk for protective equipment in nuclear service. By defining a common testing framework, IEEE PC37.98/D2, Aug 2022 helps improve consistency in design control, acceptance testing, and technical review. It supports clearer procurement requirements and better evidence that relays and auxiliaries can perform as expected during and after seismic events, which is critical for safety, continuity, and regulatory confidence.

• Seismic qualification testing
• Protective relays and auxiliaries
• Nuclear facility electrical systems
• Safety-related performance verification
• Draft IEEE technical guidance