Document: 10 CFR Part 50
Document ID: 1c9db254-4b16-4016-8411-63ac96dc3718
Document Type: cfr
Title: Environmental qualification of electric equipment important to safety for nuclear power plants.
Source: 10 CFR Part 50
Source URL: https://www.ecfr.gov/current/title-10/part-50/section-50.49
Revision Date: 
Chapter: 
Section ID: 50.49
CFR Part: 50
CFR Title: 10

Content:
aphs (b)(1)(i)(A) through (C) of this section by the safety-related equipment. ( 3 ) Certain post-accident monitoring equipment. [ 4 ] ( c ) Requirements for ( 1 ) dynamic and seismic qualification of electric equipment important to safety, ( 2 ) protection of electric equipment important to safety against other natural phenomena and external events, and ( 3 ) environmental qualification of electric equipment important to safety located in a mild environment are not included within the scope of this section. A mild environment is an environment that would at no time be significantly more severe than the environment that would occur during normal plant operation, including anticipated operational occurrences. ( d ) The applicant or licensee shall prepare a list of electric equipment important to safety covered by this section. In addition, the applicant or licensee shall include the information in paragraphs (d)(1) , (2) , and (3) of this section for this electric equipment important to safety in a qualification file. The applicant or licensee shall keep the list and information in the file current and retain the file in auditable form for the entire period during which the covered item is installed in the nuclear power plant or is stored for future use to permit verification that each item of electric equipment is important to safely meet the requirements of paragraph (j) of this section. ( 1 ) The performance specifications under conditions existing during and following design basis accidents. ( 2 ) The voltage, frequency, load, and other electrical characteristics for which the performance specified in accordance with paragraph (d)(1) of this section can be ensured. ( 3 ) The environmental conditions, including temperature, pressure, humidity, radiation, chemicals, and submergence at the location where the equipment must perform as specified in accordance with paragraphs (d) (1) and (2) of this section. ( e ) The electric equipment qualification program must