ML14259A337
| ML14259A337 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 09/12/2014 |
| From: | Weber T Arizona Public Service Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 102-06906-TNW/CJS | |
| Download: ML14259A337 (2) | |
Text
10 CFR 50.90 Oaps 102-06906-TNW/CJS September 12, 2014 Palo Verde Nuclear Generating Station P.O. Box 52034 Phoenix, AZ 85072 Mail Station 7636 Tel: (623) 393-5764 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2 and 3 Docket Nos. STN 50-528, 50-529 and 50-530 Support for NRC Review of Lockheed Martin Topical Report, Generic Qualification of the NuPAC Platform for Safety-Related Applications Arizona Public Service (APS) is planning the staged replacement of several safety related instrumentation and control systems at the Palo Verde Nuclear Generating Station (PVNGS). The systems include the Qualified Safety Parameter Display System (QSPDS), the Balance of Plant Engineered Safety Features Actuation System (BOP-ESFAS), and the Diverse Auxiliary Feedwater Actuation System (DAFAS). Preliminary scheduling has APS starting work on detailed designs in 2016.
APS is striving to ensure that these systems will be replaced with the safest available technology with high reliability and availability. APS is considering using the Lockheed Martin NuPAC Field Programmable Gate Array (FPGA) based distributed logic platform. This platform is being considered due to its simplistic nonprocessor based architecture and its unique methodologies for meeting the requirements for diversity, defense-in-depth, and addressing software single mode failure concerns.
Lockheed Martin has submitted a Topical Report (TR) for this system to the NRC (Document Control No.: NS-LTA-2011-00022 dated June 28, 2011, ADAMS Accession Number ML11201A323) for review and issuance of a safety evaluation (SE). APS plans on using a platform that has an approved NRC SE in order to allow for efficiencies and minimize the time for license amendment request review of these upgrades. APS, therefore, requests that the NRC consider the planned APS use of an NRC approved TR for the Lockheed Martin NuPAC safety system in the determination of the priority for A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway a Comanche Peak f Diablo Canyon & Palo Verde 0 Wolf Creek
-i ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Support for NRC Review of Lockheed Martin Topical Report, Generic Qualification of the NuPAC Platform for Safety-Related Applications Page 2 the NRC review of digital platform TRs. This will allow APS to have an approved platform for consideration in the late 2015/early 2016 time period.
No commitments are being made to the NRC by this letter. Should you need further information regarding this submittal, please contact me at (623) 393-5764.
Sincerely, Toas N.Wee yet
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Thomas N. Weber Department Leader, Regulatory Affairs TNW/CJS/hsc cc:
M. L. Dapas B. K. Singal M. M. Watford M. A. Brown NRC Region IV Regional Administrator NRC NRR Project Manager for PVNGS NRC NRR Project Manager NRC Senior Resident Inspector for PVNGS