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About This Item

 

Full Description

Scope

This standard establishes criteria for qualification of continuous duty Class 1E motors, located in mild and harsh environments in nuclear power generating stations in order to demonstrate their ability to perform their intended safety functions under all required conditions. This standard does not apply to motors used in valve actuators (see IEEE Std 382(TM)-1996 [B2]1).

Purpose

The purpose of this standard is to provide direction for the implementation of the requirements of IEEE Std 323(TM)-20032 as they apply to the specific features of continuous duty safety-related electric motor qualification. This standard also provides guidance for qualification of refurbished motors and insulation systems for motor rewinds.

Abstract

Revision Standard - Active. Reaffirmed March 2012. It is required that Class 1E motors, with their interfaces, meet or exceed the specified performance requirements throughout their service life. This is accomplished through a program that includes, but is not limited to, design, qualification, production quality control, shipping, storage, installation, operation, maintenance, periodic testing, and surveillance. This standard addresses the qualification portion of the program. It discusses the requirement for maintenance, repair, and surveillance of motors to maintain qualification of motors throughout their installed life but does not provide detailed guidance about how these programmatic items must be implemented and maintained. The qualification requirements of this standard, when met, demonstrate and document the ability of the motor and/or insulation system to perform its safety function(s) under specified service conditions.
 

Document History

  1. IEEE 334-2006

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    IEEE Standard for Qualifying Continuous Duty Class 1E Motors for Nuclear Power Generating Stations

    • Most Recent
  2. IEEE 334-1994


    IEEE Standard for Qualifying Continuous Duty Class 1E Motors for Nuclear Power Generating Stations

    • Historical Version
  3. IEEE 334-1974


    IEEE Standard for Type Tests of Continuous Duty Class 1E Motors for Nuclear Power Generating Stations

    • Historical Version