RC-15-0139, Submittal of Special Report (Spr) 2015-001 Regarding the Loose-Part Monitoring System (Lpms) Channel Number 8 Being Inoperable in Excess of 30 Days

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Submittal of Special Report (Spr) 2015-001 Regarding the Loose-Part Monitoring System (Lpms) Channel Number 8 Being Inoperable in Excess of 30 Days
ML15237A042
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 08/20/2015
From: Gatlin T
South Carolina Electric & Gas Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
818.08, CR-15-03141, CR-15-03563, RC-15-0139 SPR 2015-001
Download: ML15237A042 (1)


Text

Thomas D. Gatlin Vice President, Nuclear Operations 803.345.4342 August 20, 2015 A SCANA COMPANY Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555

Dear Sir / Madam:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION UNIT 1 DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 SPECIAL REPORT (SPR) 2015-001 South Carolina Electric & Gas Company is submitting this report pursuant to the requirements of Technical Specification 3.3.3.10.a. The Loose-Part Monitoring System (LPMS) channel number 8 has been inoperable in excess of 30 days.

This channel was declared inoperable July 14, 2015, due to low background noise levels*

Channel 8 is a redundant channel to Channel 9, used to provide false alarm filtering.

Channel 9 can provide LPMS alarms independently. System function is not impacted, and the LPMS is operable. The sensor for this channel is located on the 'C' Steam Generator, inside the Reactor Building and is not accessible during power operation. Repairs will be completed during the next refueling outage (RF-22), which is scheduled for Fall 2015.

Should you have any questions, please call Mr. Bruce Thompson at (803) 931-5052 at your convenience.

Very truly yours, Thomas D. Gatlin RP/TDG/wt c: K. B. Marsh S. A. ,Williams S. A. Byrne NRC Resident Inspector J. B. Archie INPO Records Center N. S. Camns K. M. Sutton J. H. Hamilton NSRC J. W. Williams RTS (CR-15-03141 & CR-I15-03563)

W. M. Cherry File (818.08)

V. M. McCree PRSF (RC-1 5-0139)

  • F(803)941-9776 . g V.C.Summer Nuclear Station
  • P.O.Box 88.* Jenkinsville, SC.* 29065