RC-16-0078, Special Report (Spr) 2016-001 Regarding Reactor Building Purge Exhaust Effluent High Range Radiation Monitor (RM-A 14) Being Declared Inoperable Due to Erratic Spiking Indications

Special Report (Spr) 2016-001 Regarding Reactor Building Purge Exhaust Effluent High Range Radiation Monitor (RM-A 14) Being Declared Inoperable Due to Erratic Spiking Indications

ML16131A721
Person / Time
Site:	Summer
Issue date:	05/06/2016
From:	Lippard G South Carolina Electric & Gas Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RC-16-0078 SPR 2016-001
Download: ML16131A721 (1)

Text

George Lippard, Ill Vice President. Nuclear Operations

<_ SCE&G@ A SCANA COMPANY 803.345.4810 May 6, 2016 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (VCSNS), UNIT NO. 1 DOCKET NO. 50-395 .

OPERATING LICENSE NO. NPF-12 SPECIAL REPORT (SPR) 2016-001 South Carolina Electric & Gas Company (SCE&G) is submitting this Special Report pursuant to the requirements of Technical Specifications 6.9.2 as required by Action 30 of Technical Specifications 3.3.3.1.b, Table 3.3-6, RADIATION MONITORING INSTRUMENTATION, Item 2.d.i ii.

On April 26, 2016, at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />, the Reactor Building Purge Exhaust Effluent High Range Radiation Monitor (RM-A 14) was declared inoperable due to erratic spiking indications. Upon declaring RM-A14 inoperable, VCSNS implemented a preplanned alternate method of monitoring in accordance with the requirements of Action 30 of the Technical Specifications.

After troubleshooting, failure of RM-A 14 was determined to be due to a failed detector/preamp assembly. The detector/preamp assembly was repaired, satisfactory retested, and returned to operable status on 05/03/16 at 1805 hours0.0209 days <br />0.501 hours <br />0.00298 weeks <br />6.868025e-4 months <br />.

RM-A 14 provides radiation monitoring for the Reactor Building Purge Exhaust System as described within the FSAR section 9.4.8.2.2 Reactor Building Purge Supply and Exhaust System, and FSAR Figure 9.4-28.

Should you have any questions, please call Bruce Thompson at (803) 931-5042 at your convenience.

Very truly yours, George Lippard, Ill WCM/GUts c: K. B. Marsh C. Haney S. A. Byrne S. A. Williams J.B. Archie NRC Resident Inspector N. S. Carns K. M. Sutton J. H. Hamilton NSRC J. W. Williams RTS (CR-16'-02041)

W. M. Cherry File (818.08)

C. Haney PSRF (RC-16-0078)

V. C. Summer Nuclear Station* P. 0. Box 88 *Jenkinsville, SC* 29065

• F(803) 941-9776

George Lippard, Ill Vice President. Nuclear Operations

<_ SCE&G@ A SCANA COMPANY 803.345.4810 May 6, 2016 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (VCSNS), UNIT NO. 1 DOCKET NO. 50-395 .

OPERATING LICENSE NO. NPF-12 SPECIAL REPORT (SPR) 2016-001 South Carolina Electric & Gas Company (SCE&G) is submitting this Special Report pursuant to the requirements of Technical Specifications 6.9.2 as required by Action 30 of Technical Specifications 3.3.3.1.b, Table 3.3-6, RADIATION MONITORING INSTRUMENTATION, Item 2.d.i ii.

On April 26, 2016, at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />, the Reactor Building Purge Exhaust Effluent High Range Radiation Monitor (RM-A 14) was declared inoperable due to erratic spiking indications. Upon declaring RM-A14 inoperable, VCSNS implemented a preplanned alternate method of monitoring in accordance with the requirements of Action 30 of the Technical Specifications.

After troubleshooting, failure of RM-A 14 was determined to be due to a failed detector/preamp assembly. The detector/preamp assembly was repaired, satisfactory retested, and returned to operable status on 05/03/16 at 1805 hours0.0209 days <br />0.501 hours <br />0.00298 weeks <br />6.868025e-4 months <br />.

RM-A 14 provides radiation monitoring for the Reactor Building Purge Exhaust System as described within the FSAR section 9.4.8.2.2 Reactor Building Purge Supply and Exhaust System, and FSAR Figure 9.4-28.

Should you have any questions, please call Bruce Thompson at (803) 931-5042 at your convenience.

Very truly yours, George Lippard, Ill WCM/GUts c: K. B. Marsh C. Haney S. A. Byrne S. A. Williams J.B. Archie NRC Resident Inspector N. S. Carns K. M. Sutton J. H. Hamilton NSRC J. W. Williams RTS (CR-16'-02041)

W. M. Cherry File (818.08)

C. Haney PSRF (RC-16-0078)

V. C. Summer Nuclear Station* P. 0. Box 88 *Jenkinsville, SC* 29065

• F(803) 941-9776