ML18139B216

Updated LER 80-022/03X-1:on 800327,snubbers 1-RC-HSS-116 & 1-RC-HSS-117 Found Out of Position During Inaccessible Snubbers Visual Insp 1-PT-39B-1.Caused by Improper Installation Due to Design Change Deficiency

ML18139B216
Person / Time
Site:	Surry
Issue date:	03/27/1981
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139B212	List: ML18139B211 ML18139B213 ML18139B214 ML18139B215 ML18139B216
References
IEB-79-14, LER-80-022-03X, LER-80-22-3X, NUDOCS 8104020648
Download: ML18139B216 (2)

Text

{{#Wiki_filter:* NRC FORM 366 {7-771 UPDATE REPORT e LICENSEE EVENT REPORT U.aCLEAR REGULATORY COMMISSION PREVIOUS REPORT DATE 04/24/80 CONTROL BL.OCK: I I I';\ (PLEASE PRfNT OR TYPE ALL REQUIRED INFORMATION) ~1 --------------.6 \.!..I ~IV! Al SI Pl SI 7 8 9 l.lCENSEE CODE 1 101 ° 1° I-I O I O I O I O I O l-I O I O 101 4 1 1 1 1 1 1 1 1 101 I I© 14 1S l.lCENSE NUMBEl'i 25 26 l.lCENSE TYPE ;JO 57 CAT ss* CON'T [iliJ '. 8 ~©Io 1 5 1 o I o I o 1 2 1 8 1 o 101 o 1 3 I 2 I 7 I 8 I o I© I o I 3 I 21 11 8 I 1 I 0 60 61 DOCKET NUMBER 6S 69 EVENT CATE 74 75 REPORT CATE SO EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@) /During the performance of l-PT-39B-l, Inaccessible Snubbers Visual Inspection, snub-[[II] lbers l-RC-HSS-116 and l-RC-HSS-117 were discovered installed improperly, i.e. 90° out! [[II] jof position. The snubbers were declared inoperable. .This event is reportable in CI:I]J 1accordance with Tech. Spec. 6.6.2.b.(2). Since no seismic disturbances were []J:[) lenced while the unit was at power, the health and safety of the public were not [[]I) affected [IT[] 7 8 g 80 [ill] 7 8 SYSTEM cooE le IB I@ 9 10 @ I.ER/RO CVENT YEAR REPORT j 8 i O i NUMBER 21 22 CAUSE CAUSE COMP. cooe suecooe COMPONENT cooe suecooE LLJ@ Ll.J@) js ju IP !o !R !T I@ lE...J@) 11 12 13 18 19 SEQUENTIAi. OCCURRENCE REPORT REPORT NO. COOE TYPE VAi.VE SUBCOOE l!.J@ 20 I I 1° I 2 1 2 1 I .,..I 10 I 3 I l!_J l=J 23 24 26 27 2S 29 30 31

• ACTION FUTURE EFFl:C"T' SHUTt>OWN
• t.:::\22 A'iiACHMENT NPRD-4 PRIME COMP. TAKEN ACTION ON Pl.ANT METHOD HOURS SUBMl'iiEO FORM:;ue.

SUPPi.i ER LI@W@ UJ@ L!.1 I 01 01 01 01 l!.J@. l..!..J@) W@) 3:3 34 3S 36 37 40 41 42 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @ REVISION NO. l2J 32 COMPONENT MANUFACTURER I GI 2 1 5 I 5 1 44 47 DJ]] JThe snubbers were installed improperly due to deficiency of the design change utilizeq CIIlJ Ito correct pipe support deficiencies discovered under IE Bulletin 79-14. The snubber§ o:::uJ 1 will be purged and installed properly prior to unit start-up. D:u]I..._ _______________________________________ _ CIEJ 7 8 9 AA~LITY STATUS % POWER OTHEi'I STATUS \::::;/ tITIJ lQJ@) ! 0 I O I O l .... I _N __ /A_. ----8 9 10 12 1'3 ACTIVITY CONTENT /.:';\ REl.EASeo OF RELEASE . AMOUNT OF ACTIVITY l2liJ @ Li@)_I ___ N_/ A ____ _ 1

• a 9 10 11 80 METI-IOD OF DISCOVERY DESCRIPTION
• @ DISCOVERY l!J@1* Personnel observation 44 45 46 80 N/A _LOCATION OF RELEASE @ 44 45 80 7 PERSONNEL EXPOSURES Q. NUMBER /;;":;\TYPE(.;;;\

DESCRIPTION [QI] 10 IO IO '~~.....__N_/A _________________________ ____, 1 a g 11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION 41 [iliJ 10 t O I Ol@~ ___ I_A_. ___________________ __,... ___ _ 7 8 9 11 12 so LOSS OF OR OAMAGE TO l"ACILJTY '43\ TYPE DESCRIPTION I;::) DJ1) ~@. *

• N/A 7 8 9 10 so PUBLICITY C,.. R 5-0 ISSUEOt,;:;\

DESCRIPTION~ N C U c: NL y ., IIli] Ui..J~--*-* --**_.:;.;N ..... A...__ ______________ ___. I j I II I I II I II I ! 7 8 9 10 68 69 80 ; J. L. W:Hson NAME OF PC>EPARE;;----------------- PUQNE: (804) 357-3184 o 8104020648 e SURRY POWER DOCKET NO: REPORT NO: EVENT DATE: STATION UNIT NO. 1 50-280 80-022/03X-l 03-27-80 TITLE OF EVENT: SNUBBERS l-HSS-RC-115/116 IMPROPERLY INSTALLED

1. DESCRIPTION OF EVENT: During the performance of l-PT-39B-l, Inaccessible Snubbers Visual Inspection, snubbers l-RC-HSS-116 and l-RC-HSS-117 were discovered installed improperly, i.e. 90° out of proper position.

The snubbers were declared inoperable. This event is reportable in accordance with Tech. Spec. 6.6.2.b,2.

2. PROBABLE CONSEQUENCES:

The snubbers were installed with the reservoir below the valve block. This could have caused air intro~uction into the valve block or cylinder thus preventing the snubbers from performing their intended function. However, since no seismic disturbances were encountered while the Unit was at power, the health and safety of the public were not affected.

3. CAUSE OF EVENT: The snubbers were ins~alled improperly due to a dificiency of the design change utilized to correct pipe support deficiencies discovered under IE Bulletin 79-14. 4. IMMEDIATE CORRECTIVE ACTIONS: The snubbers were declared inoperable.

5. SUBSEQUENT CORRECTIVE ACTIONS: The snubber end mounting bracket will be removed, rotated 90° and reinstalled.

The snubber will be purged and reinstalled in the proper orientation pr,ior to Unit Startup. 6. ACTION TAKEN TO PREVENT RECURRENCE: Design personnel have been apprised of the importance of proper snubber orientation. 7, GENERIC IMPLICATIONS: The Visual Inspection performed at Unit shutdown covers all snubber installations. Since no other snubbers were discovered installed improperly, this event possesses no generic implications.}}