ML15293A598

Closure of Ieb 77-04 and Ieb 75-08

ML15293A598
Person / Time
Site:	Watts Bar
Issue date:	10/13/2015
From:	Dion J Watts Bar Special Projects Branch
To:	Robert Kuntz Watts Bar Special Projects Branch
References
Download: ML15293A598 (4)

Text

1 NRR-PMDAPEm Resource From:Dion, Jeanne Sent: Tuesday, October 13, 2015 10:00 AM To: Kuntz, Robert Cc: Poole, Justin

Subject:

IEBs.docx Attachments:

IEBs.docxSee the attached for a write up to verify closure of the following Bulletins:

IEB 75-08 PWR Pressure instrumentation. This Bulletin requested that licensees provide a description of RCS temp and pressure instrumentation which allows licensees to verify adherences to the temperature and pressure limitations specified in TSs. The licensee notes the ability to continuously monitor temperature and pressure instrumentation in Section 7.2, "Reactor Trip System," and in Section 7.4, "Systems Required for Safety Shutdown," of the Updated Final Safety Analysis Report. These sections are consistent with the UFSAR descriptions for WBN Unit 1, and

therefore are acceptable.

In inspection report (IR) 50-391/85-08, dated March 28, 1985 (ADAMS Accession No. ML082190701), RII inspectors verified WBN has the required Instrumentation to satisfy this bulletin. In addition, the inspector verified that Technical Specification 3/4.4.9 and System Operating Instruction 68.1.B adequately address the importance of maintaining temperature and pressure within the prescribed limits. IEB 75-08, "PWR Pressure Instrumentation" is closed.

IEB 77-04 "Calculational Error Affecting the Design Performance of a System for Controlling pH of Containment Sump Water Following a LOCA." This Bulletin required that all PWR Power Reactor Facilities with an operating license or a construction permit which utilizes or plans to utilize a system for pH control of containment sump post LOCA solution, describe what action has been taken or is planned to be taken to assure that the system design specifications will be met for all operating conditions permitted by the technical specifications, as applicable to the containment sump water sources. This item was closed in IR 50-391/78-09, dated June 1, 1978 (ADAMS Accession No. ML071790565). TVA submitted a response to IEB 77-04 dated January 23, 1978. WBN Unit 2 has an ice condenser containment and utilizes boron tetraborate in the ice for containment sump pH control. TVA's response to this Bulletin reported that limited concentrations are included in the plant TSs. Surveillance Requirement 3.6.11.5 requires verification that the boron concertation is within a specified ranges and is consistent with WBN Unit 1's licensing basis.

Jeanne Dion Project Manager Watts Bar Special Projects Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation 301-415-1349

2 Hearing Identifier: NRR_PMDA Email Number: 2461 Mail Envelope Properties (a979444c4d4145deab88fe8b278cb84f)

Subject:

IEBs.docx Sent Date: 10/13/2015 9:59:49 AM Received Date: 10/13/2015 9:59:00 AM From: Dion, Jeanne Created By: Jeanne.Dion@nrc.gov Recipients: "Poole, Justin" <Justin.Poole@nrc.gov>

Tracking Status: None "Kuntz, Robert" <Robert.Kuntz@nrc.gov>

Tracking Status: None Post Office: HQPWMSMRS08.nrc.gov

Files Size Date & Time MESSAGE 2454 10/13/2015 9:59:00 AM IEBs.docx 16577 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:

(57) Office of Inspection and Enforcement Bulletin (IEB) 75-08

TVA Action

NRC Action

PWR Pressure Instrumentation.

The item has been approved either for both units at WBN or explicitly for WBN, Unit 2; however, a change to the original approval requires submittal of the technical specifications and NRC staff review. Closed. The ability to continuously monitor pressure and temperature is noted in the UFSAR and is consistent with the licensing basis for Unit 1. RII verified that WBN has instrumentation in place to monitor pressure and temperature to close this Bulletine (IR 50-391/85-08, ADAMS Accession No. ML082190701).

(58) IEB 77-04

TVA Action

NRC Action Calculation Error Affecting Performance of a System for Controlling pH of Containment Sump Water Following a LOCA.

The item has been approved either for both units at WBN or explicitly for WBN, Unit 2; however, a change to the original approval requires submittal of the technical specifications and NRC staff review.

Closed. Item was closed in Inspection Report IR 391/78-09 (ADAMS Accession No. ML071790565). WBN Unit 2 has an ice condenser containment and utilizes boron tetraborate in the ice for containment sump pH control. TVA's response to this Bulletin reported that limited concentrations are included in the plant TSs. Surveillance Requirement 3.6.11.5 requires verification that the boron concetration is within a specified ranges and is consistent with WBN Unit 1's licensing basis.