AECM-82-510, Outlines Commitments Made During 821025 Telcon Re Design & Testing of Automatic Depressurization Air Sys.Integrated Leak Test on Sys Will Be Performed Every 18 Months. Justification for Interim Operation Listed

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Outlines Commitments Made During 821025 Telcon Re Design & Testing of Automatic Depressurization Air Sys.Integrated Leak Test on Sys Will Be Performed Every 18 Months. Justification for Interim Operation Listed
ML20065R216
Person / Time
Site: Grand Gulf  Entergy icon.png
Issue date: 10/26/1982
From: Dale L
MISSISSIPPI POWER & LIGHT CO.
To: Harold Denton
Office of Nuclear Reactor Regulation
References
AECM-82-510, TAC-49992, NUDOCS 8210290102
Download: ML20065R216 (2)


Text

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MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi P. O. B OX 164 0 J AC K S O N. MIS SIS SIP PI 3 9 2 05 October 26, 1982 NUCLEAR PRooUCTioN DEPARTMENT U. S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Washington, D. C. 20555 Attention: Mr. Harold R. Denton, Director

Dear Mr. Denton:

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416 and 50-417 License No. NPF-13 File: 0260/M-001.0 ADS Air System

Reference:

AECM-82/490, October 18, 1982 AECM-82/510 In AECM-82/490, Mississippi Power & Light Company (MP&L) responded to requests by the NRC's Equipment Qualification Branch for information relating to the design and testing of the automatic depressurization system (ADS) air system. During an October 25, 1982 conference call, the NRC requested additional information regarding system testing. This letter documents and supplements commitments made by MP&L during the call.

In addition to the tests discussed in AECM-82/490, MP&L commits to perform an integrated leak test on the ADS air system every 18 months.

Furthermore, prior to startup following the first refueling outage, MP&L will install instrumentation to monitor ADS air receiver pressure. The details of the system leak test, the type and location of instrumentation readouts, and appropriate proposed Technical Specifications are being developed. Therefore, MP&L has decided to document the above commitments in this letter in order to support the SSER 4 schedule and will provide the necessary details later in time to support implementation of the changes prior to startup following the first refueling outage.

Until the above proposed Technical Specifications can be developed and the instrumentation installed, interim plant operation is justified for the following reasons:

1. Successful completion of the ADS air system pre-operational test will ensure a system capable of meeting design requirements. D Of
2. System components will be in their first cycle of operation and can be expected to be relatively leak free.
3. Instrument air system alarms on the discharge of the booster compressors (see FSAR Figure 9.3-1) will give the control room operator an indication of a problem that may lead to loss of ADS air system pressure.

8210290102 820126 PDR ADOCK 05000416 Aember Middle South Utilities System P PDR

2 AECM-82/510 MISSISSIPPI POWER Q LI2HT COMPANY E2 With the commitments provided above, MP&L considers this issue resolved for full power licensing. If you have any further questions, please do not hesitate to contact us.

Yours truly, Y

/ L. F. Dale Manager of Nuclear Services MJD/JGC/JDR: sap cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. G. B. Taylor Mr. Richard C. DeYoung, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Mr. J. P. O'Reilly, Regional Administrator Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II

! 101 Marietta St., N.W., Suite 3100 Atlanta, Georgia 30303 i

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