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EPRI TR 102323 Nuclear Equipment Testing

Electromagnetic Interference Testing of Power Plant Equipment EPRI TR 102323 Revision 3

Electromagnetic Interference (EMI) testing evaluates a product’s susceptibility and immunity to radio frequencies and interference. More specifically, with Nuclear Power Plants, EPRI TR 102323 testing helps certify that plant components and module-level replacements meet stringent EMC qualifications.

This ultimately safeguards against potential failures and extends equipment longevity. Also, this proactive approach enhances operational efficiency and bolsters safety and regulatory compliance.

This page highlights Revision 3 of the EPRI TR 102323 nuclear EMI testing document. It served as a foundational step in refining electromagnetic compatibility (EMC) testing protocols within nuclear power plants. EPRI TR 102323 Rev. 3 does not include the advancements made in Revision 4 and future updates in Revision 5.

For more insights into the specific changes introduced in Revision 3 and comparisons with other revisions, additional information will be accessible through designated links:

Summary of EPRI TR 102323 Revision 3 EMI Testing of Nuclear Equipment

The EPRI standards for the Electric Power Research Institute. This institute has created a testing standard labeled the TR 102323.

By conducting detailed EMI tests within TR 102323, power plants can actively identify and manage electromagnetic interference that could otherwise interrupt operations or cause expensive downtime. These tests also ensure that components and replacements at the module level meet strict EMC standards, which helps prevent failures and increases the lifespan of the equipment.

The nuclear EMI/RFI emission data reported in the TR 102323 testing standard were collected from several nuclear plants. The nuclear power plants used procedures based on the military standards (MIL-STDs) developed by the U.S. Department of Defense for measuring the emissions of equipment and emission sources.

Evaluation of Early EMC/EMI Nuclear Power Plant Equipment Data

This section analyzes the highest observed composite spectra for each of the seven nuclear plants from which emissions data were collected. The data include measurements from conducted emissions tests (CE01 and CE03), radiated emissions tests (RE01 and RE02), and transient emissions tests (CE07).

The results show the highest emissions level measured across all frequencies for all locations within each plant. This further provides a conservative representation of the typical electromagnetic interference (EMI) emissions environment in the nuclear power plants.

Also, the sections below contribute to a detailed understanding of the EMI environment in nuclear plants, assisting in the development of effective EMC guidelines and practices that ensure plant safety and operational reliability.

Low-Frequency Conducted Emissions

Low-frequency conducted emissions were analyzed based on the collected data, focusing on frequencies below 50 MHz.

This data was crucial for setting boundaries on emissions for nuclear plants and helping to establish safe distances and guidelines for EMC compliance, ensuring that emissions levels are controlled and do not interfere with critical plant operations.

High-Frequency Conducted Emissions

Data on high-frequency conducted emissions, which involve frequencies from 10 kHz to 30 MHz, were also analyzed.

High frequency emissions results helped in understanding the impact of high-frequency interference on nuclear plant safety and operations, contributing to the development of specific guidelines for managing such emissions.

Radiated Magnetic Field Emissions

This section discussed the analysis of radiated magnetic field emissions measured in various nuclear plants.

These fields are particularly important to understand due to their potential to interfere with sensitive electronic equipment in nuclear plants. The collected data helped in establishing acceptable levels of radiated magnetic emissions and corresponding safety measures.

Radiated Electric Field Emissions

Analysis of radiated electric field emissions focused on understanding their impact on plant operations and safety.

Data from different nuclear plants were used to evaluate the typical levels of radiated electric fields and to develop guidelines that ensure these emissions do not adversely affect plant safety and reliability.

Radiated Electric Field Emissions above 1 GHz

This section analyzed emissions in the frequency range above 1 GHz. Emissions above 1 GHz are critical due to their potential to interfere with digital and sensitive electronic equipment.

The findings were used to refine EMC standards and practices, ensuring higher safety margins for nuclear plants.

Conducted Transient Emissions

The analysis in this section covered transient emissions, which can cause significant disruptions if not properly managed.

The collected data was critical in developing comprehensive guidelines and practices that help mitigate the impact of transient emissions on plant operations and safety.

Nuclear Equipment Susceptibility and Emissions Testing Procedures

The EPRI TR 102323 – Rev 3 outlines the guidelines for electromagnetic compatibility (EMC) testing, focusing on both emissions and susceptibility aspects within nuclear power plant environments.

The guidelines include detailed methodologies for assessing the resilience of equipment to various electromagnetic disturbances such as surges, bursts, and electrostatic discharges, critical for maintaining the operational integrity and safety of the plant.

Susceptibility Tests

Susceptibility tests assess how well power plant equipment can withstand various types of electromagnetic interference (EMI) that might be encountered within a plant environment. These tests aid in certifying that safety-related and essential non-safety power production equipment can operate reliably under electromagnetic stress.

Susceptibility tests apply to new and existing equipment that may be subject to EMI due to proximity to other electronic devices or operational equipment within power plants.

Key Tests Included:

  • Low-Frequency Conducted Susceptibility: Focuses on the equipment’s resilience to disturbances that may occur along power lines at lower frequencies. This test is crucial for devices that are directly connected to the main power supply, ensuring they can handle common types of electrical noise or fluctuations without malfunctioning.
  • High-Frequency Conducted Susceptibility: This test targets the equipment’s endurance against higher frequency disruptions that could be transmitted through both power and signal cables. It’s essential for ensuring the integrity of digital communications and control systems within the plant.
  • Radiated Field Susceptibility: Includes comprehensive testing for both magnetic and electric field interferences. The aim is to certify that the equipment is shielded adequately against external fields that might occur from other sources within the plant, ensuring continuous and safe operation.
  • Transient and Surge Tests: Evaluate the equipment’s capability to withstand sudden and intense bursts of energy as well as voltage surges. Such conditions are typical in industrial settings with high-powered equipment and are critical tests for maintaining operational stability and safety.

Emissions Tests

Emission tests ensure that the electromagnetic energy emitted by the equipment does not interfere with the operation of nearby devices. This is particularly important in environments like power plants where the spatial arrangement can place sensitive electronics nearby.

Emissions tests are designed for all electronic and electrical devices within a plant to maintain a harmonious operational environment. Emissions must comply with strict regulatory standards for electromagnetic compatibility (EMC).

Key Tests Included:

  • Low-Frequency Conducted Emissions: Measures the electromagnetic energy that equipment emits along power lines at lower frequencies. The goal is to ensure that these emissions do not disrupt the functionality of other systems or exceed established thresholds that could lead to broader disruptions.
  • High-Frequency Conducted Emissions: Assesses emissions at higher frequencies to verify that the equipment complies with EMC regulations and does not negatively impact the performance of other plant equipment or systems.
  • Radiated Field Emissions: Tests for unwanted electromagnetic emissions in the form of both magnetic and electric fields. It is critical to ensure that these emissions are within safe limits to prevent interference with sensitive electronics and control systems nearby.

Expert Nuclear Power Plant EMI Testing Laboratory

Keystone Compliance can accommodate fixed, mobile, and portable devices of all sizes. Our team strives to give our customers more time and energy on product development instead of testing. Lastly, Keystone has a full lab of test equipment which permits us to provide short lead times on scheduling.

If you are ready to start your EPRI TR 102323 and MIL-STD testing, please request a quote. Have a question about EPRI Nuclear Power Plant EMI Testing? Contact us or call (724) 657-9940 and we will determine the best course of action.

Referenced Nuclear Power Plant EMI Testing Standards:

Department of Defense Interface Standard MIL-STD-461E

Described as “Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment”.

IEC Standard European Norm (EN) 61000

FCC 47CFR

IEEE Standards

  • IEEE C62.41: Surge and Electrically-Fast Transient tests.

CISPR Standards

American National Standard Institute (ANSI) Standards

  • ANSI 63.4
  • ANSI 63.12