ML18102A407

LER 96-010-00:on 960819,TS 4.0.5 Surveillance for Two Pressurizer Welds Was Missed Due to Insufficient Verification & Validation of Entry of Data Into Database. Exam of Pressurizer Spray Nozzle Was completed.W/960918 Ltr

ML18102A407
Person / Time
Site:	Salem
Issue date:	09/18/1996
From:	Garchow D, Hassler D Public Service Enterprise Group
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-96-010-02, LER-96-10-2, LR-N96292, NUDOCS 9609240141
Download: ML18102A407 (5)

Text

~ e r OPS~G Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, New Jersey 08038-0236 Nuclear Business Unit SEP 181996 LR-N96292 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Gentlemen:

LER 311/96-010-00 SALEM GENERATING STATION UNIT 2 FACILITY OPERATING LICENSE NO. DPR-75 DOCKET NO. 50-311 This Licensee Event Report entitled ~Missed Technical Specification 4.0.5 Surveillance for Two Pressurizer Welds" is being submitted pursuant to the requirements of the Code of Federal Regulations 10CFR50. 73 (a) (2) (i) (B).

Attachment SORC Mtg.96-123 DVH C Distribution LER File 3.7 9609240141 960918 PDR ADOCK 05000311 S PDR The po.rer is in \"Our hands.

95-2168 REV. 6/94

Document Control Desk SEP 181996 LR-N96292 Attachment A The following represents the commitments that Public Service Electric

& Gas (PSE&G) made to the Nuclear Regulatory Commission (NRC) relative to this LER (311/96-010-00). The commitments are as follows:

1. The Salem Unit 2 first 10 year ISI required welds were reviewed to ensure no other welds were missed.

2. Examination of the Pressurizer Spray Nozzle and Pressurizer longitudinal welds were completed with acceptable results.

3. The Salem Unit 1 first 10 year ISI required welds will be reviewed and any identified missed surveillances will be completed by entry into Mode 6 for Salem Unit 1.

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NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 3150*0104 (4.95) EXPIRES 04130198

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FACILITY IAllE Ill DOCKET IUlllEI IZI l'AOE Ill SALEM GENERATING STATION UNIT 2 05000311 1OF3 TITLE 141 Missed Technical Specification 4.0.5 Surveillance for Two Pressurizer Welds EVENT DATE 151 LER NUMBER 161 REPORT DATE 171 OTHER FACILITIES INVOLVED (81 FAcalTT IAllE Docm1u*E*

llOITll 08 DAY 19 YEAI 96 YEAll 96 I

SEOUEITIAL IU*EI 010 I- REYlllOI IUll!IEll 00 llOITll 09 DAY 18 YEAR 96 FACl.ITT llAllE Salem Unit 1 Docm1u*E1 05000272 05000 OPERATING THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: ICheckone or morel 1111 MODEl9J 20.22011bl 20.22031*1121M x 50.73(tH2llil 50.731tH2HviiiJ POWER 20.2203(111111 20.22031aH3Jlil 50.73(1J[2J(iiJ 50.73(tll2J(xJ LEVEL(10J 20.22031tH2Jlil 20.22031*H31Pil 50.73(tJl2J(iiiJ 73.71 20.220311H210il 20.2203111141 50.731tK210vJ OTHER 20.220311112JOiiJ 50.361cK1J 50.7311112Kvl S~eclfy 11 Ab1tr1ct below or In fll CForm366A 20.2203(eJl210vJ 50.361cll21 50.731111211viil LICENSEE CONTACT FOR THIS LER 1121 IAllE TELEPHDIE IUllllER lmcl1olo Ano CHll Dennis v. Hassler, LER Coordinator 609-339-1989 COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT 1131 CAUSE IYITEll CO..OIEIT llAIUFACTUIEI IEl'OllTABLE CAUSE IYITEll COlll'OIEIT llAIUFACTUIEI ftEPOITABLE TO*IDS TO IPIDS IYES SUPPLEMENTAL REPORT EXPECTED 1141 Pf yes, complete EXPECTED SUBMISSION DATEJ.

Ix IND

, EXPECTED SUBMISSION DATEl151 MONTH DAY YEAR ABSTRACT (Limit to 1400 spaces, i.e.. approximately 15 single-spaced typewritten lines) 1161 On August 19, 1996 a determination was made that the first interval Inservice Inspection {ISI) for the Pressurizer spray nozzle inner radius had not been performed. Southwest Research Institute (SWRI) had maintained the weld inspection portion of Salem Units 1 and 2 ISI program during the first 10 year intervals. A review of Salem Unit 2 ISI first 10 year interval welds revealed one additional longitudinal weld on the Pressurizer that had not been completed.

Non performance of these ISI weld inspections constitutes a missed surveillance required by Technical Specification 4. 0. 5.

The cause of the missed ISI of the two welds is insufficient verification and validation of the entry of data into the SWRI ISI database. Corrective actions include completed examination of the Pressurizer Spray Nozzle and Pressurizer longitudinal welds with acceptable results. The Salem Unit 1 first 10 year ISI required welds will be reviewed and any identified missed surveillances will be completed by entry into Mode 6 for Salem Unit 1.

This event is reportable in accordance with 10 CFR 73(a) ( 2) {i) ( B) ' any condition prohibited by the plant's Technical Specifications.

fllRC FORM 366 14-951

i NRC FORM 388A U.S. NUCLEAR REGULATORY COMMISSION

• (~96) *

• LICENSEE EVENT REPORT (LER)

TEXT CONTINUATION FACILITY NAME (1) DOCKET NUMBER (2) LER NUMBER 6) PAGE (3) 05000311 YEAR I SEQUENTIAL NUMBER REVISION NUMBER 2 OF 3 SALEM GENERATING STATION UNIT 2 96 - 010 00 TEXT (If more apace ia required, use additional copies of NRC Form 366A) (17)

PLANT AND SYSTEM IDENTIFICATION Westinghouse - Pressurized Water Reactor Pressurizer {AB/PZR}*

• Energy Industry Identification System (EIIS) codes and component function identifier codes appear as (SS/CCC)

CONDITIONS PRIOR TO OCCURRENCE At the time of identification, Salem Units 1 and 2 were shutdown and defueled.

DESCRIPTION OF OCCURRENCE On August 19, 1996 a determination was made that the first interval Inservice Inspection (ISI) for the Pressurizer spray nozzle inner radius had not been performed. Southwest Research Institute (SWRI) had maintained the weld inspection portion of Salem Units 1 and 2 ISI program during the first 10 year intervals. A review of Salem Unit 2 rsr first 10 year interval welds revealed one additional longitudinal weld on the Pressurizer that had not been completed.

Non performance of these ISI weld inspections constitutes a missed surveillance required by Technical Specification 4.0.5.

A PSE&G review of the ISI first interval Non-Destructive (NOE) ISI records for these welds could not locate data that the inspections were performed. A similar check for these two welds was also conducted by SWRI with the same results.

SWRI had utilized a PC database to document the weld examination status. The PC program required manual entry of data into the database. This entry .was typically performed at the SWRI home office after the outages during which the ISI weld inspections were completed. Starting with the second ten year ISI interval for Salem Unit 2, which commenced in 1992, PSE&G assumed control for the implementation of the entire Salem Unit 2 ISI program. PSE&G assumed control for Salem Unit 1 ISI program in 1993. PSE&G does not use the SWRI database in Salem Unit 1 or 2 ISI programs. The current PC database has inherent program controls linking completed NOE examinations with exam schedule updates and final reports.

CAUSE OF OCCURRENCE The cause of the missed ISI of the two welds is insufficient verification and validation of the entry of data into the SWRI ISI database. Insufficient controls were in place to ensure that correct entries were made.

NRC FORM 366A (4-95)

NRC FORM 386A U.S. NUCLEAR REGULATORY COMMISSION (4-95) *

• LICENSEE EVENT REPORT (LER)

TEXT CONTINUATION FACILITY NAME (1) DOCKET NUMBERf2) LER NUMBER (6) PAGE(3) 05000311 YEAR I SEQUENTIAL NUMBER IREVISION NUMBER 3 OF 3 SALEM GENERATING STATION UNIT 2 96 - 010 00 TEXT (If more space is required, use additional copies of NRC Form 366A) (17)

PRIOR SIMILAR OCCURRENCES A review of LERs for Salem Units 1 and 2 over the last two years did not identify any similar issue.

SAFETY CONSEQUENCES AND IMPLICATIONS There were no safety consequences with this event because the welds have been examined and found acceptable. If the recent examination of the welds had not been satisfactory, the implication is that indications in the welds could have developed into cracks. With cracks in the welds, small leaks could have occurred that would result in a loss of Reactor Coolant System (RCS) inventory.

It is reasonable to expect that the leaks would have been detected and the loss of RCS inventory would be recognized, with appropriate operator action being taken.

CORRECTIVE ACTION

1. The Salem Unit 2 first 10 year ISI required welds were reviewed to ensure no other welds were missed.

2. Examination of the Pressurizer Spray Nozzle and Pressurizer longitudinal welds were completed with acceptable results.

3. The Salem Unit 1 first 10 year ISI required welds will be reviewed and any identified missed surveillances will be completed by entry into Mode 6 for Salem Unit 1.

NRC FORM~ (4-95)