ML20198P868

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Submits Daily Highlight.Discrepancies in Plant Drawings Identified by Region I Insp Team in walk-downs of Emergency Svc Water & Isolation Condenser Sys.Of Total of 42 Drawings inspected,40 Had Discrepancies.Related Info Encl
ML20198P868
Person / Time
Site: 05000000, Oyster Creek
Issue date: 06/06/1985
From: Donohew J
Office of Nuclear Reactor Regulation
To: Harold Denton, Eisenhut D, Thompson H
NRC
Shared Package
ML20151H203 List:
References
FOIA-86-26 NUDOCS 8606060405
Download: ML20198P868 (37)
v • d • e


Text

{{#Wiki_filter:. ['C' S b ratechli NUCLEAR REGULATORY COMMISSION {rg.Q y. ,s venmasserrom.m.c. asses Durr l June 6, 1986 ~ ~ i Wi fIeS f F) er o / .,y PEMORANRM F0f': H. Denton T. Blovak D. Eisenhut

8. Holahan N. Thompson S. Varga E

R. Bernero J. Miller T T. $peis J. Sto1r J. Knight D. Vossa11o F. Miraglia C. Grimes D. Crutchfield G. Edison

8. Laines 4

THRU: John A. Zwolinski. Branch Chief (, Operating Reactors Branch f5, DL ' FROM: Jack N. Donohaw, Jr., Pro.fect Manager 1 Operating Reactors Branch #5, DL StBJECT DAILY HIGHLIGHT - OYSTER CREEK DISCREPANCIES IN PLANT DRAWINGS Discrepancies in Oyster Creek plant drawings have been identified by a Region I inspection team in walk downs of the emergency service water and isolation condenser systems. The discrepancies were between (1) the as-4 built plant and stress isometric drawings and (2) the as-built plant and ortt.ographic drawings. The discrepancies include the following: dimensions. extra holes in steel, missing hardware lack of welds, improper welds. irmorrect spring and snubber settings, skewed and missing anchor bolts. i additional pipe supports and interferences between hengers and adjacent piping. Of the total of 42 drawings inspected by the Region I team. 40 had* discrepencies. h no.

  • The full extent of this problem is not known. Some of the drawings now
  • 31 know to have discrepancies were used by the staff in SEP evaluationst however, the extent of the disempancies in these drawings and their a

".'J significence is not known. The licensee hos aEt plant.d to compare and is comparing the drawings' of sa Systems to the as-The results of this study are to be ymsented to e menspasent meeting at Region i during the week of June 9 or June 16. The date of tlw meeting is still being arranged. NRR/DL will be represented at the meeting. The licenses.will not be able to campero the drowings 7> of safe tems inside contalmeent with the as-built pleet unless the plant i s t down. g 86060 g 5 060319 g TERSO86-26 PDR regjgg geest0Ps Branch f5. DL ~9 i e,_ g e,3:n;;p~ 3,.. zee,,,,,,,,,..,,ses;,0,N,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,M,{ 01,,,,,_GB/W90 i: t p-r=.

PRELIMINARY: 6/13/85 ' k, PURPOSE IN RESPONSE TO NRC INSPECTION 85-14. WE INTEND TO DISCUSS THE FOLLOWING: 1. A REVIEW OF THE WORK DONE FOR BULLETINS 79-02 AND -14 DURING THE 1979-80 TIME FRAME. 2. THE INFORMATION OBTAINED FROM THE RECORD REVIEW AND PLANT f WALKDOWN CONDUCTED IN JUNE 1985. 3. ANY PRELIMINARY CONCLUSIONS THAT CAN BE DRAWN FROM CURRENTLY AVAILABLE INFORMATION. 4. ANY IMPACT ON SEP SEISMIC ANALYSES. NOTE: THE ABOVE IS PRELIMINARY ONLY, AND IS A STATUS REPORT OF ONGOING WORK. ( B-W

PRELIMINARY: 6/13/85 '.' is AGENDA 1. INTRODUCTION 2. WORK DONE IN 1979/1980 TIME FRAME N. KAZANAS A) REVIEW 0F EFFORT / DOCUMENTATION B) CONCLUSIONS 3. WORK BEING DONE IN 1985 N. KAZANAS A) SCOPE i B) DATA 4. EVALUATION OF INFORMATION D* CRONEBERGER 1 ~ A) OBSERVATIONS B) SCOPE OF ASSESSMENT C) SEP REVIEW / IMPACT D) CONCLUSIONS 5. FUTURE WORK D. CRONEBERGER 1 i

PRELIMINARY AS OF 6/13/85 \\. COMPARIS0N OF IE 79-02 TO REQUIREMENTS REQUIRED PERFORMED ATTRIBUTES FOR INSPECTION PER BULLETIN 1979-1980 SIZE AND TYPE OF ANCHOR BOLT X X EMBEDMENT DEPTH X X MINIMUM EDGE DISTANCE X X PROPER BOLT SPACING X X FULL EXPANSION OF SHELL X X THREAD ENGAGEMENT X X PLATE BOLT H0LE SIZE X X / VELING NUTS /SHELL NOT IN i CONTACT WITH PLATE PRIOR TO TESTING X X TENSILE /TOROUE TEST X X \\

~. PRELIMINARY AS OF 6/13/85 i ( 79-02 PREVIOUS INSPECTIONS PERFORMED BASE PLATES BASE PLATES FAILED ACCEPTANCE SYSTEM ACCESSIBLE TESTED TEST RATE ISO CONDENSER 40 40 0 100% CONTAINMENT SPRAY 71 47 0 100% CORE SPRAY 96 51 0 100% ESW 44 44 1 98% RECIRCULATION 5 5 2 60% LIQUID POIS0N 18 11 0 100% E8 i 98.5% TESTING PROCEDURES - TENSIONING ONE ANCHOR ON EACH ACCESSIBLE BASE PLATE TO 125% OF DESIGN LOAD QA VERIFIED TESTING PERFORMED,,,,. QA RECORDS GENERATED HAVE BEEN RETRIEVED ( TESTING PROCEDURE WAS ADEQUATE FOR WORK BEING PERFORMED i \\ ~

PRELIMINARY ( AS OF 6/13/85 i CONCLUSION FOR 79-02 i i (1) SIX OF ELEVEN NSR SYSTEMS TESTED i (2) ONE NONSAFETY RELATED SYSTEM TESTED (CLOSED COOLING WATER) (3) OTHER FIVE NSR TO BE VISUALLY INSPECTED j (4) SCOPE 1, 2, 3 REPORTED IN BULLETIN RESPONSE i (5) NOT ALL BASE PLATES WERE TESTED { A) INACCESSIBILITY i ( B) INCOMPLETE COVERAGE 4P(6) 95% CONFIDENCE / 95% RELIABILITY HAS NOT BEEN DEMONSTRATED ON THE TOTAL SYSTEM BASIS r i i I L l t i l s - _. _... _ -.. _ - -.. _ _ _, _. ~. _.. ~ _ _. _ - -........ _.. _ _..

PRELIMINARY AS OF 6/13/85 COMPARIS0N OF SCOPE FOR IE BULLETIN 79-14 PAST AND PRESENT PERFORMED IN 1985 ATTRIBUTES REQUIRED PER BULLETIN 1979 - 1980 REINSPECTION PIPE RUN GE0 METRY X X SUPPORT DESIGN X X SUPPORT LOCATION X X SPRINGS NOT BOTTOMED X X N0 GAP IN RIGID SUPPORT X X CLEARANCES AT POINT OF ATTACHMENT - SEISMIC HANGERS X X CLEARANCES AT WALL AND FLOOR ( PENETRATIONS X cFFECTIVENESS OF CLAMPING X X i VALVE AND OPERATOR LOCATIONS X X ADDITIONAL ATTRIBUTES l SKIN TEMPERATURE X COMPONENT IDENTIFICATION X WELDS COMPLETE X ARC STRIKES X SPRING LOAD X SNUBBER EXTENSION X ' HANGER HARDWARE DETAILS X l \\ --e

~ PRELIMINARY AS OF 6/13/85 79-14 PREVIOUS INSPECTIONS PERFORMED PROCEDURE FIELD DWGS. CHECK LIST VISUAL FOR DIMENSIONAL SYSTEM USED MARKED UP EMPLOYED CONF / LOC VERIFICATION *(LOCATION) ISO CONDENSER X X X YES YES CONTAINMENT SPRAY X X X YES YES CORE SPRAY X X X YES YES ESW X X .X YES YES RECIRCULATION X X X YES YES LIQUID POIS0N X X X YES YES MAIN STEAM X X X YES YES i CLEANUP DEMINERALIZER X X X YES YES SHUTDOWN COOLING X X X YES YES FEEDWATER X X X YES YES CONTROL R0D DRIVE X X X YES YES VISUAL INSPECTION AND WALKDOWN BY FIELD ENGINEER CHECK LIST USED - ACCEPTANCE CRITERIA WAS QUALITATIVE l BASIS FOR ALLOWABLE TOLERANCES QUESTIONABLE AND NOT DOCUMENTED WORKMANSHIP STANDARDS WERE NOT EMPLOYED OR WERE CONSIDERED INSIGNIFICANT NONCONFORMANCE SOFTWARE WAS DOCUMENTED AT DISCRETION OF FIELD ENGINEER FOLLOW UP ANALYSIS PERFORMED BY BURNS & R0E RECORDS HAVE BEEN RETRIEVED

  • 1_2 FEET WAS THE TOLERANCE USED i

e

PRELIMINARY AS OF 6/13/85 CURRENT WALKDOWN (79-14 REINSPECTION FOR ACCESSIBLE PORTIONS) HANGERS WITHIN HANGERS HANGERS WITH ATTRIBUTES ATTRIBUTES SYSTEM B0llNDARY/ACC COMPLETED VARIANCE INSPECTED ACCEPTABLE % ACCEPT CONTROL R0D DRIVE 33 33 31 354 245 69 CORE SPRAY 66 33 33 533 416 78 EMER. SERV. WATER 34 29 29 314 239 76 SHUTDOWN COOLING 29 29 29 465 384 83 LIQUID POISON 32 22 22 307 129 ' 42 CLEANUP DEMINERAL-7 0 0 IZER ISO COND. 81 62 61 1267 992 78 CORE SPRAY 88 5 5 102 85 83 TOTAL 3342 2490 75 1 e

( PRELIMINARY AS OF 6/13/85 ~ CHARACTERIZATION OF VARIANCES NOTED (BASED ON DETAILED ANALYSIS OF 110 MNCRS) VARIANCE BY TYPE o A) WELD ASSOCIATED PROBLEMS 20.7% - VARIANCES REQUIRING REWORK - 8% OF 20.7% (BASED ON 63 MNCR'S DISPOSITIONED) B) MINOR DIMENSIONAL VARIANCES FROM HANGER DETAIL DRAWINGS 34.6% c) MISSING OR INADEQUATE NUTS / BOLTS / WASHERS 16.2% D) CONFIGURATION PROBLEMS - E.G. - ADDITIONAL LOADS OFF EXISTING SUPPORTS, 24.9% MISORIENTATION, MODIFICATIONS

  • E)

HANGER LOCATION - DIMENSIONAL VARIANCE FROM ISOMETRIC 3.6% 1985 TOLERANCES VARIED WITH LENGTH I

  • - M0DS ARE CONTROLLED THROUGH TURNOVER PACKAGES INCLUDING AS BUILT DRAWINGS.

VARIANCES REPORTED ARE FROM DRAWINGS NOT YET UPDATED. 9 'I

PRELIMINARY AS OF 6/13/85 A. DISPOSITION CATEGORIES 1) MINORREWORKCATEGORIES-OBVIOUSWORKMANSHIPDISCREPANC MISSINb NUIS, BOLis, WASHERS, AND WELDMENTS. NO ANALYSIS IS PERFORMED FOR THESE SITUATIONS. 2) CONFIGURATION UPDATES - A)FORAS-F0bNDCONDITIONSDEEMEDACCEPTABLE B) MODIFICATIONS PROPOSED AS THE OUTCOME OF ANALYSIS '3) REANALYSIS - WHEN VARIANCE IS NON-0BVIOUS AND AVAILABLE, PREVIOUS ANALYSIS DOES NOT INCORPORATE OR DOES NOT OBVIOUSLY B0UND THE CONDITION. DISPOSITION TYPE OF VARIANCE CONFIGURATION UPDATE CONFIRMATORY-MINOR REANALYSIS SYSTEM REWORK AS-FOUND REPAIR RE0'D INTENDED ( c1ER. SERV. WATER 5 18 2 16 SHUTDOWN COOLING ' ~4 0 0 0 LIQUID POISON 4 11 2 10 ISO COND 5 5 0 '5 ~ CORE SPRAY 3 3 0 1 TOTAL VARIANCES 21 37 4 32 22 39 4 34 l

I PRELIMINARY AS OF 6/13/85 . ( CONCLUSIONS FOR 79-14 TO DATE, APPR0XIMATELY 200 MNCR'S ISSUED - N0 VARIANCES HAVE PROMPTED THE DECLARATION OF ANY SAFETY RELATED SYSTEM BEING IN0PERABLE - NO PROBLEMS IDENTIFIED TO DATE HAVE REQUIRED REWORK WITHIN A SPECIFIC LC0 ( e \\ ~

PRELIMINARY: 6/13/85 '( 0.C. IE BULLETIN 79-14 1980 EFFORT CONCLUSIONS 1. FOR PIPING SYSTEMS INSPECTED. MAJOR TECHNICAL REQUIREMENTS OF IE BULLETIN 79-14 HAVE BEEN ADDRESSED AND SHOW EVIDENCE OF BEING SATISFIED. 2. DOCUMENTATION IS SCATTERED. FRAGMENTED AND NOT UP TO CURRENT STANDARDS. ( 3. PORTIONS OF SYSTEMS DEEMED INACCESSIBLE PREVIOUSLY ARE INCLUDED IN CURRENT INSPECTION PROGRAM. \\ l l l l

PWEllWIWMWY: b/13/6) STATUS ON 1985 INSPECTip1 EFFORT AS OF JlNE 10, 1985 l SYSTEM WPLETED 00f0ITIONAL 00f0ITIG4 ALLY SYSTEM SYSTEM (2) thCR'S RELEASES (3) REEVALUATED RE-ANALYSIS (3) ENRGENCY 31 p28@ 4 f YES NONE SERVICE UIR. CORE SPRAY 7 5/2 YES NONE CONTAIfENT G 2/4 YES NONE SPRAY RECIRCULATION (1) (1) (1) (1) LIQJID POIS01 25 22/3 YES COMPLETED (4) ISO WDENSER G3 62/1 YES NONE C0fffROL RW 32 31/1 YES PARTIAL DRIVE FEEDmTER (1) (1) (1) (1) MAIN STEAM (1) (1) (1) (1) Q.EAtlP (1) (1) (1) (1) DEMINERALIZER SHITITJLN 31 29/2 YES PARTIAL C00LDE IDifd: 1. INSIDE DRYWELL OR HIGH RADIATION AREA - CURRENTLY INACCESSIBLE.

2. MAJORITY OF PIPING / HANGER INSPECTIONS FOR THE ACCESSIBLE SYSTEMS HAVE BEEN COMPLETED.
3. SPECIFIC TRIVIAL HANGER INCR'S HAVE BEEN CLOSED OUT ON THE SPOT (I.E., MISSING WASHERS.

INSIGNIFICANT DIMENSIONAL DISCREPANCIES, Er i

4. DETAILED RE-ANALYSIS COMPLETED, INCR'S N01
CIALLY CLOSED OUT, EXCEPT FOR s

CONDITIONAL RELEASES.

Preliminary: 6/13/85 ( SYSTEMATIC EVALVATION PROGRA:1 SEISMIC ANALYSIS I. Original Metholodology - A physical model was developed for most systems requiring seismic qualification. Test results established the basis for static loads. Numerical dynamic analyses were performed on certain systems. [ II. Numerical dynamic analysis performed on portions of five (5) systems, i.e.,_ Control Rod Drive, Main Steam, g_ Feedwater. Liquid Poison and Core Spray. e III. Conclusion - Analytical results confirmed that methodologies originally employed in the design of 0; piping produced results which satisfy current design methodologies. l 1

PRELIMINARY: 6/13/85 / IMPACT ON SEP WORK ALL MNCR'S RESULTS OF SYSTEM EVALUATED RE-EVALUATION COMMENTS CORE SPRAY NOT INSPECTED LIQUID-POISON YES OK ENGINEERING JUDGMENT WAS UTILIZED. NO COMPUTER RERUN. CRD YES OK SAME AS ABOVE. MAIN STEAM NOT INSPECTED FEEDWATER NOT INSPECTED } i s i a 4

PRELIMINARY: 6/13/85 0.C. IE BULLETIN 79-02 ( 1980 EFFORT CONCLUSIONS 1. TECHNICAL REQUIREMENTS OF IE BULLETIN 79-02 (SUCH AS BASE PLATE FLEXIBILITY. FACTOR OF SAFETY CYCLIC LOADS. LOAD TESTING) HAVE BEEN ADDRESSED AND SHOW EVIDENCE OF BEING SATISFIED. 2. DOCUMENTATION IS SCATTEED. FRAGMENTED AND NOT UP TO CURRENT STANDARDS. 3. INACCESSIBLE SYSTEMS (5 0UT OF 11) WERE NOT TESTED. VISUAL INSPECTIONS OF THESE SYSTEMS WERE COMMITTED TO BE DONE AT A I LATER DATE. 4. TEST RESULTS WILL BE SUMMARIZED AND STATISTICS DEVELOPED TO DOCUMENT CONFIDENCE LEVELS. \\ ~ ,_,,.m., _y

Preliminary: 6/13/85 i l FUTURE WORK I. Current inspection program will be extended to cover required systems inside the drywell. The inspection, to be performed at first convenient opportunity, will attempt to fully address IE Bulletin 79-14 requirements. II. Sampling requirements of IE Bulletin 79-02 will be aje3 ;p extended at the first convenient time to ensure sampling requirements have been satisfied. III. Documentation requirements of both Bulletins will be C#~"# satisfied by the assembling of all records resulting from the original work as well as the current work and incomplete documentatio'n will be completed. IV. All MNCR's resulting from current inspection program will be closed out with final engineering evaluations g,,,,f included. If corrective action requires rework, engineering direction for rework will be issued. (

PRELIMINARY: 6/13/85 PURPOSE IN RESPONSE TO NRC INSPECTION 85-14. WE INTEND TO DISCUSS THE FOLLOWING: 1. A REVIEW OF THE WORK DONE FOR BULLETINS 79-02 AND -14 DURING THE 1979-80 TIME FRAME. 2. THE INFORMATION OBTAINED FROM THE RECORD REVIEW AND PLANT WALKDOWN CONDUCTED IN JUNE 1985. 3. ANY PRELIMINARY CONCLUSIONS THAT CAN BE DRAWN FROM CURRENTLY AVAILABLE INFORMATION. 4. ANY IMPACT ON SEP SEISMIC ANALYSES. NOTE: THE ABOVE IS PRELIMINARY ONLY. AND IS A STATUS REPORT OF ONGOING WORK. l l i l B-20

PRELIMINARY: 6/13/85 AGENDA 1. INTRODUCTION 2. WORK DONE IN 1979/1980 TIME FRAME N. KAZANAS A) REVIEW 0F EFFORT / DOCUMENTATION B) CONCLUSIONS 3. WORK BEING DONE IN 1985 N. KAZANAS A) SCOPE B) DATA 4. EVALUATION OF INFORMATION D. CRONEBERGER A) OBSERVATIONS B) SCOPE OF ASSESSMENT C) SEP REVIEWIIMPACT D) CONCLUSIONS 5. FUTURE WORK D. CRONEBERGER e ~

6 ' PRELIMINARY AS OF 6/13/85 COMPARISON OF Ig__79-02 TO REQUIREMENTS REQUIRED PERFORMED ATTRIBUTES FOR INSPECTION PER BULLETIN 1979-1980 SIZE AND TYPE OF ANCHOR BOLT X X EMBEDMENT DEPTH X X MINIMUM EDGE DISTANCE X X PROPER BOLT SPACING X X FULL EXPANSION OF SHELL X X THREAD ENGAGEMENT X X PLATE BOLT H0LE SIZE X X LEVELING NUTS /SHELL NOT IN CONTACT WITH PLATE PRIOR TO TESTING X X TENSILE / TORQUE TEST X X N J Y#

i PRELIMINARY AS OF 6/13/85 79-02 PREVIOUS INSPECTIONS PERFORMED BASE PLATES BASE PLATES FAILED. ACCEPTANCE SYSTEM ACCESSIBLE TESTED TEST RATE ISO CONDENSER 40 40 0 100% CONTAINMENT SPRAY 71 47 0 100% CORE SPRAY 96 51 0 100% ESW 44 44 1 98% RECIRCULATION 5 5 2 60% LIQUID POIS0N 18 11 0 100% 153 5 38.5% 4 TESTING PROCEDURES - TENSIONING ONE ANCHOR ON EACH ACCESSI PLATE T0 125% OF DESIGN LOAD QA VERIFIED TESTING PERFORMED..... QARECORDSGENERATEDHAVEBEENRETRIEVED/hA TESTING PROCEDURE WAS ADEQUATE FOR W'ORK BEING PERFORMED 1 .b

PRELIMINARY AS OF 6/13/85 CONCLUSION FOR 79-02 ~ (1) SIX OF ELEVEN NSR SYSTEMS TESTED (2) ONE NONSAFETY RELATED SYSTEM TESTED (CLOSED COOLING WATER) (3) OTHER FIVE NSR TO BE VISUALLY INSPECTED (4) SCOPE 1, 2, 3 REPORTED IN BULLETIN RESPONSE (5) NOT ALL BASE PLATES WERE TESTED A) INACCESSIBILITY B) INCOMPLETE C0VERAGE (6) 95% CONFIDENCE / 95% RELIABILITY HAS NOT BEEN DEMONSTRATED TOTAL SYSTEM BASIS

D e PRELIMINARY AS OF 6/13/85 COMPARIS0N OF SCOPE FOR IE BULLETIN 79-14 PAST AND PRESENT PERFORMED IN 1985 ATTRIBUTES REQUIRED PER BULLETIN 1979 - 1980 REINSPECTION PIPE RUN GE0 METRY X X SUPPORT DESIGN X X SUPPORT LOCATION X X SPRINGS NOT BOTTOMED X X N0 GAP IN RIGID SUPPORT X X CLEARANCES AT POINT OF ATTACHMENT - SEISMIC HANGERS X X CLEARANCES AT WALL AND FLOOR PENETRATIONS X EFFECTIVENESS OF CLAMPING X X VALVE AND OPERATOR LOCATIONS X X ADDITIONAL ATTRIBUTES SKIN TEMPERATURE X COMPONENT IDENTIFICATION X WELDS COMPLETE X ARC STRIKES X SPRING LOAD X SNUBBER EXTENSION X HANGER HARDWARE DETAILS X ,.,,y e p.,,y-

i PRELIMINARY AS OF G/13/85 79-14 PREVIOUS INSPECTIONS PERFORMED PROCEDURE FIELD DWGS. CHECK LIST VISUAL FOR DIMENSIONAL SYSTEM USED MARKED UP EMPLOYED CONF / LOC VERIFICATION *(LOCATION ISO CONDENSER X X X YES YES CONTAINMENT SPRAY X X X YES YES CORE SPRAY X X X YES YES i ESW X X .X YES YES RECIRCULATION X X X YES YES LIQUID POIS0N X X X YES YES MAIN STEAM X X X YES YES CLEANIJP DEMINERALIZER X X X YES YES SHUTDOWN COOLING X X X YES YES FEEDWATER X X X YES YES CONTROL R0D DRIVE X X X YES YES VISUAL INSPECTION AND WALKDOWN BY FIELD ENGINEER CHECK LIST USED - ACCEPTANCE CRITERIA WAS QUALITATIVE i BASIS FOR ALLOWABLE TOLERANCES QUESTIONABLE AND NOT DOCUMENTED WORKMANSHIP STANDARDS WERE NOT EMPLOYED OR WERE CONSIDERED INSIGNIFICA NONCONFORMANCE SOFTWARE WAS DOCUMENTED AT DISCRETION OF FIELD ENGINEER FOLLOW UP ANALYSIS PERFORMED BY BURNS & ROE i RECORDS HAVE.BEEN RETRIEVED i

  • 1_2 FEET WAS THE TOLERANCE USED

/ 4

___u

  1. ____m

_.m _.m 4 .m_._.._.._m l +=* e e PRELIMINARY AS OF 6/13/85 CURRENT WALKDOWN (79-14 REINSPECTION FOR ACCESSIBLE PORTIONS HANGERS WITHIN HANGERS HANGERS WITH ATTRIBUTES ATTRIBUTES SYSTEM B0UNDARY/ACC COMPLETED VARIANCE INSPECTED ACCEPTABLE % ACCEPT CONTROL R0D DRIVE 33 33 31 354 245 69 CORE SPRAY 66 33 33 533 416 78 EMER. SERV. WATER 34 29 29 314 239 76 SHUTDOWN COOLING 29 29 29 465 384 83 LIQUID POIS0N 32 22 22 307 129 42 CLEANUP DEMINERAL-7 0 0 IZER ISO COND. 81 62 61 1267 992 78 CORE SPRAY 88 5 5 102 85 83 TOTAL 3342 2490 75 /

i PRELIMINARY AS OF 6/13/85 CHARACTERIZATION OF VARIANCES NOTED (BASED ON DETAILED ANALYSIS OF 110 MNCRS) Mi l C gfj7 jf VARIANCE BY TYPE A) WELD ASSOCIATED PROBLEMS 20.7% - VARIANCES REQUIRING REWORK - 8% OF 20.7% (BASED ON 63 MNCR'S DISPOSITIONED) B) MINOR DIMENSIONAL VARIANCES FROM HANGER DETAIL DRAWINGS 34.6% c) MISSING OR INADEQUATE NUTS / BOLTS / WASHERS 16.2% D) CONFIGURATION PROBLEMS - E.G. - ADDITIONAL LOADS OFF EXISTING SUPPORTS, 24.9% MISORIENTATION, MODIFICATIONS

  • E)

HANGER LOCATION - DIMENSIONAL VARIANCE FROM ISOMETRIC 3.6% 1985 TOLERANCES VARIED WITH LENGTH In s g /gle w % ef 4NI c{uWa 'M 4"l W O Y vs

  • - MODS ARE CONTROLLED THROUGH TURNOVER PACKAGES INCLUDING AS BUILT DRAWINGS.

VARIANCES REPORTED ARE FROM DRAWINGS NOT YET UPDATED. 1

PRELIMINARY AS OF 6/13/85 DISPOSITION CATEGORIES 1) MIN 0R REWORK CATEGORIES - OBVIOUS WORKMANSHIP DISCREP MISSINb Nuls, BOLIS, WASHERS, AND WELDMENTS. NO ANALYSIS IS PERFORMED FOR THESE SITUATIONS. 2) CONFIGURATION UPDATES - A) FOR AS-FOUND CONDITIONS DEEMED ACCEPTABLE B) MODIFICATIONS PROPOSED AS THE OUTCOME OF ANALYSIS 3) REANALYSIS - WHEN VARIANCE IS NON-0BVIOUS AND AVAILABLE, PREVIOUS ANALYSIS DOES NOT INCORPORATE OR DOES NOT OBVIOUSLY B0UND T CONDITION. t DISPOSITION TYPE OF VARIANCE CONFIGURATION UPDATE MINOR CONFIRMATORY REANALYSIS SYSTEM REWORK AS-FOUND REPAIR REQ'D INTENDED EMER. SERV. WATER 5 18 2 16 SHUTDOWN COOLING 4 0 0 0 LIQUID POISON 4 11 2 10 ISO COND 5 5 0 5 CORE SPRAY 3 3 0 1 TOTAL VARIANCES 21 37 4 32 22 39 4 34 i s I 4 g --7r-~

,-,-----,,-,,-.----,-,-----.+-----,-----,--me.------

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PRELIMINARY AS OF 6/13/85 CONCLUSIONS FOR 79-1f4 TO DATE, APPR0XIMATELY 200 MNCR'S ISSUED - N0 VARIANCES HAVE PROMPTED THE DECLARATION OF ANY SAFETY RELATED SYSTEM BEING INOPERABLE - NO PROBLEMS IDENTIFIED TO DATE HAVE REQUIRED REWORK WITHIN A SPECIFIC LC0 b Sh1 i wudL e

PRELIMINARY: 6/13/85 O.C. IE BULLETIN 79-14 1980 EFFORT CONCLUSIONS 1. FOR PIPING SYSTEMS INSPECTED. MAJOR TECHNICAL REQUIREMENTS OF IE BULLETIN 79-14 HAVE BEEN ADDRESSED KR6"f50) FJIDENCr0EBEI)T674 ATIS$-IE6. 2. DOCUMENTATION IS SCATTERED. FRAGMENTED AND NOT UP TO CURRENT STANDARDS. 3. PORTIONS OF SYSTEMS DEEMED INACCESSIBLE PREVIOUSLY ARE INCLUDED IN CURRENT INSPECTION PROGRAM. I

tryML M. @7722 VCD STATUS ON 1985 INSPECTION EFFORT AS OF JlE 10,1985 / SYSTEM C0ffLETED C0folTIONAL C0f01TIONALLY SYSTEM SYSTEM (2) tNCR'S EEASES (3) REEVALUATED RE-ANALYSIS (3) EERGENCY 31 28/3 YES NONE SERVICE WIR. CORE SPRAY 7 5/2 YES NONE 00NTAlfENT 6 2/4 YES ik)NE SPRAY RECIRCULATION (1) (1) (1) (1) LI(UID POISCN 25 22/3 YES COMPLETED (4) ISO 00t0ENSER 65 62/1 YES NONE CONTROL RCD 32 31/1 YES PARTIAL i DRIVE FEEDWAltH (1) (1) (1) (1) t%IN STEAM (1) (1) (1) (1) CLEAf1P (1) (1) (1) (1) DEMIERALIZER SIUIDCLN 31 29/2 YES PARTIAL COOLING NQES: 1. INSIDE DRYWELL OR HIGH RADIATION AREA - CURRENTLY INACCESSIBLE.

2. MAJORITY OF PIPING / HANGER INSPECTIONS FOR THE ACCESSIBLE SYSTEMS HAVE BEEN COMPLETED.
3. SPECIFIC TRIVIAL HANGER ffCR'S HAVE BEEN CLOSED OUT ON THE SPOT (I.E., MISSING WASHERS.

INSIGNIFICANT DIMENSIONAL DISCREPANCIES. ETC.)

4. DETAILED RE-ANALYSIS COMPLETED IfOl'S NOT OFFICIALLY CLOSED OUT. EXCEPT FOR CONDITIONAL RELEASES.

Preliminary: 6/13/85 oY\\@vh h Mp 1 SYSTEMATIC EVALUATION PROGRA't SEISMIC ANALYSIS I. Original Metholodology - A physical model was developed for most systems requiring seismic qualification. Test results established the basis for static loads. Numerical dynamic analyses were performed on certain systems. II. Numerical dynamic analysis performed on portions of five (5) systems, i.e., Control Rod Drive, Main Steam, Feedwater, Liquid Poison and Core Spray. III. Conclusion - Analytical results confirmed that methodologies originally employed in the design of OC piping produced results which satisfy current design methodologies. \\ s

PRELIMINARY: 6/13185 / IMPACT ON SEP WORK ALL MNCR'S RESULTS OF SYSTEM EVALUATED RE-EVALUATION COMMENTS =- CORE SPRAY NOT INSPECTED LIQUID-POIS0N YES OK % ah fw ENGINEERING JUDGMENT WAS p,, g-A UTILIZED. 5 N0 c0MPUTER RERUN. CRD YES OK SAME AS AB0VE. MAIN STEAM NOT INSPECTED FEEDWATER NOT INSPECTED N e my .g yq 6/ gvg Foo J C'by-i i l e

PRELIMINARY: 6/13/85 0.C. IE BULLETIN 79-02 1980 EFFORT CONCLUSIONS 1. TECHNICAL REQUIREMENTS OF IE BULLETIN 79-02 (SUCH AS BASE PLATE FLEXIBILITY. FACTOR OF SAFETY. CYCLIC LOADS. LOAD TESTING) HAVE BEEN ADDRESSED AND SHOW EVIDENCE OF BEING SATISFIED. 2. DOCUMENTATION IS SCATTEED. FRAGMENTED AND NOT UP TO CURRENT STANDARDS. 3. INACCESSIBLE SYSTEMS (5 0UT OF 11) WERE NOT TESTED. VISUAL INSPECTIONS OF THESE SYSTEMS WERE COMMITTED TO BE DONE AT A LATER DATE. Q cc b f \\R% cNkgp p ffg% 4. TEST RESULTS WILL BE SUMMARIZED AND STATISTICS DEVELOPED TO DOCUMENT CONFIDENCE LEVELS. 4 ~ r - - -v

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Preliminary: 6/13/85 FUTURE WORK d I. Current inspection program will be extended to cover g6 required systems inside the drywell. The inspection, to be performed at first convenient opportunity, will attempt to fully address IE Bulletin 79-14 requirements. II. Sampling requirements of IE Bulletin 79-02 will be PJ'd-extended at the first convenient time to ensure

f sampling requirements have been satisfied.

c? III. Documentation requirements of both Bulletins will be satisfied by the assembling of all records resulting hl [0 g Y from the original work as well as the current work and incomplete documentation will be completed, y5s A IV. All MNCR's resulting from current inspection program gp) will be closed out with final engineering evaluations ggh included. If corrective action requires rework, engineering direction for rework will be issued. i QY \\ ~~

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