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On March 27, 2014, it was determined that … On March 27, 2014, it was determined that the Browns Ferry Nuclear Plant (BFN) Required Actions of Technical Requirements Manual (TRM) 3.7.6, Electric Board Room Air Conditioning (AC) System, Condition B, would allow both BFN, Unit 2, Electric Board Room (EBR) AC subsystems to be inoperable for up to 7 days before declaring the Technical Specifications (TS) supported equipment in the EBRs inoperable. This allowance is contrary with the TS definition of "Operable-Operability" with respect to support systems. On two separate occasions in the past three years BFN, Unit 2, EBR AC System and its TS supported systems, were inoperable longer than allowed by TS. After further review of the condition, the causal analysis was revised and it was determined that BFN, Units 1 and 2, did not experience a Safety System Functional Failure (SSFF). This event is being reported in accordance with Title 10 of the Code of Federal Regulations (10 CFR) 50.73(a)(2)(i)(B).</br></br>The root cause determined that BFN personnel failed to fully understand the difference between the Technical Requirements Manual (TRM) and Technical Specifications (TS) with respect to operability.</br></br>When the TS and TRM were implemented, BFN personnel failed to realize the intent of the TRM and believed it was at the same level of the TS.</br></br>The corrective actions to prevent recurrence include revising the TRM to clearly delineate the intent and use with respect to operability and revising the procedure for Technical Specifications, Licenses and Amendments to clearly delineate the role of the TRM and TS.arly delineate the role of the TRM and TS. +
March 27, 2014 +
On March 27, 2014, it was determined that … On March 27, 2014, it was determined that the Browns Ferry Nuclear Plant (BFN) Required Actions of Technical Requirements Manual (TRM) 3.7.6, Electric Board Room Air Conditioning (AC) System, Condition B, would allow both BFN, Unit 2, Electric Board Room (EBR) AC subsystems to be inoperable for up to 7 days before declaring the Technical Specifications (TS) supported equipment in the EBRs inoperable. This allowance is contrary with the TS definition of "Operable-Operability" with respect to support systems. On two separate occasions in the past three years BFN, Unit 2, EBR AC System and its TS supported systems, were inoperable longer than allowed by TS. After further review of the condition, the causal analysis was revised and it was determined that BFN, Units 1 and 2, did not experience a Safety System Functional Failure (SSFF). This event is being reported in accordance with Title 10 of the Code of Federal Regulations (10 CFR) 50.73(a)(2)(i)(B).</br></br>The root cause determined that BFN personnel failed to fully understand the difference between the Technical Requirements Manual (TRM) and Technical Specifications (TS) with respect to operability.</br></br>When the TS and TRM were implemented, BFN personnel failed to realize the intent of the TRM and believed it was at the same level of the TS.</br></br>The corrective actions to prevent recurrence include revising the TRM to clearly delineate the intent and use with respect to operability and revising the procedure for Technical Specifications, Licenses and Amendments to clearly delineate the role of the TRM and TS.arly delineate the role of the TRM and TS. +
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1 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
12:29:11, 1 December 2017 +
December 23, 2014 +
March 27, 2014 +
Electric Board Room Air Conditioning System Inoperable for Longer than Allowed by the Technical Specifications +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.