ML19332B853
| ML19332B853 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 11/09/1989 |
| From: | Haughney C Office of Nuclear Reactor Regulation |
| To: | Rossi C Office of Nuclear Reactor Regulation |
| References | |
| OREM-89-039, OREM-89-39, NUDOCS 8911210063 | |
| Download: ML19332B853 (9) | |
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ID November 9,1989
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.HEMORANDUM FOR:
Charles E. Rossi, Cirector Division of Operational Events Assesssent
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FROM:
Charles J. Haughney, Chief l
Events Assessment Branch Division of Operational Events Assessment ~
SUBJECT:
THE OPERATING REACTORS EVENTS HEETING November 8, 1989 - MEETING 89-39 j
On November C,1989, we conducted an Operating Reactors Events teeting t
(89-39) to brief senior managers from NRR, AEOD, RES, Consnission staff, and reginnel offices on selected events that occurred since our last seeting on Novesber 1, 1989. Enclosure 1 lists the attendees.
l t presents the significant elements of the discussed events.
We identified one significant event for input into the NRC performance indicator program.
OriginalDi M UI tt.arles.7. leuchY t
Charles J. Haughney, Chief i
Events Assessment Branch Division of Operational Events Assessment
Enclosures:
As stated ec w/ Encl.:
See Next Page DISTRIBUTION
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T. Murley, NRR..
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i J. Partlow NRR E'. Jordan, AE00 i
I J.'T4ylor,'EDO E
. E. EeckJord, RES
. W. Russell, RI i
- S. Ebneter, RII B.= Davis, RIII-1 R.D. Martin. Ely F
J.B. Martin, RV i
W. Kane, RI I
L L. Reyes, RII.
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- E..Greenman, RIII' S. Collins, RIV.
4 R. Zimmereen. RV L
S. Varga, hRR.
B. Eoger NRR
. C.:Lainas, kFR G. Holahan, NRR L
F. Consel, NRR E. Weiss, AE00 i
B. Clayton.. EDO J. Lieberman, 0E J..Guttmann, SECY
- A. Thadani, NRR i
J. Richardson, NRR
- S.- Rubin, AE00
. J; Forsyth, INPO R. Barrett, NRR.
M. Harper,-AEOD R..Newlin, GPA J.. Roe', NRR H. Alderman,'ACRS l
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November 9,1989 i
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i hEMORANDUM FOR:'
Charles E. Rossi, Director Division of Operational Events Assessnefit.
l FROM:
Charles J. Haughney, Chief Events Assessment Branch Division of Operational Events Assessment r
SUBJECT:
THE OPERATING RE/,CTORS EVENTS HEETING
.Novenser 8. 1989.- MEETING 89-39 On Noven6er E,1989, we conducted an Operating Peactors Events neeting (89-39) to brief senior managers from NRR, AE00, PES. Comunission staff, and regional offices on selected events that occurred since our last meeting on i
November 1,19P9. lists the attendees.
. presents the significant elements of the discussed events.
.We identified one significant event for input into the NRC performance indicator program.
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Charles J. H hney, Chi f a
Events Assessment Branch Division of Operational Events Assessment i
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Enclosures:
As stated i
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l See Next Page
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EHCLOSURE 1 i
i LIST OF ATTENDEES OFERATING ktACTORS EVENTS BRIEF1HC (89-39)
Ncvember 8, 1989 NAME ORGANIZAT10F NAME ORGANIZATION R. Woodruff.
NkR/DOEA C. Haughney-NRR/DOEA P. Bobe AE0D/DSP C. Thor.as '
DLPQ R. Borchardt OEDO L. P11sco ARR L. Norrholm OCM/KC J. Craig HRR/PD3-2 l
E. thow RES/DSIR/SAIB B. Siegel NRR/PD3-2 R. Perfetti OE W. Troskoski OE
- 0. Fischer NRR/DOEA J. Partlow NRR/ACP
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B. Grimes hkR/DRIS t
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1 NOTES 1.
' PLANT SPECIFIC DATA BASEC Ch INITIAL REVIEW OF 50.72 REPORTS FOR THE WEEK OF INTEREST.
PERIOD IS MICNIGHT SUKDAY THROUGH MILNIGHT SUNDAY. SCRAME ARE DEFINEE,AS REACTOR PkOTECTIVE
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ACTUATIONS WHICH RESULT IN ROD MOTION, AND EXCLUDE PLANNEE l
TESTS OR SCRAMS AS PART OF PL ANNED SWCTDOWN IN ACCORDANCE WITH A FLANT PROCEEURE. THERE ARE Ill REACTORS HOLDit:0 AH r
OPERATING LICENSE.
2.
COMPLICAT ONS: RECOVERY COMPLICATED BY EQUIPMENT FAILURES OR I
l PERSONNEL ERRORS UNRELATED TO CAULE OF SCRAM.
3.
FERSONNEL RELATED PROBLEMS INCLUEE HUMAN ERROR, PROCEDURAL DEFICIENCIES, AND MANUAL STEAM GELERATOR LEVEL CONTROL PROBLEMS.
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"0THER" INCLUDES AUTOMATIC SCRAMS ATTRIBUTED TO ENVIRONMENTAL CAUSES (LIGHTNING), SYSTEM LESIGN, CR UNKNOWN CAUSE.
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b 0PERATING REACTORS EVENTS BRIEFING 89-39 EVENTS ASSESSMENT BRANCH LOCATION:
16B-11, WHITE FLINT WEDNESDAY, NOVEMBER 8, 1989, 11:00 A.M.
k DRESDEN 2 a 3 IN0PERABLE HPCI SYSTEMS r
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89-39
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r1 DRESDEN 2 AND 3 INOPERABLE HPCI' SYSTEMS ff OCTOBER 23, 1989 PROBLEM H0T FEEDWATER LEAKED INTO THE INJECTION PIPE OF THE HPCI SYSTEM CREATING STEAM VOIDS, PROBABLE WATER HAMMERS, AND POSSIBLE
CAUSE HOT FEEDWATER LEAKAGE PAST THE INJECTION CHECK VALVE, THE E
INJECTION VALVE, AND AT LEAST ONE OTHER VALVE TO THE CST.
SAFETY SIGNIFICANCE THE POTENTIAL EXISTS FOR FAILURE OF HPCI PIPING, STEAM BINDING 0F THE HPCI PUMP, AND LOSS OF ONE OF TWO FEEDWATER LINES, DISCUSSION AT UNIT 2, ON 2/21/89, THE TEMPERATURE IN THE HPCI PUMP AND TURBINE CUBICLE WAS HIGHER THAN NORMAL, ON 5/11/89, AN AXIAL TEMPERATURE GRADlENT WAS FOUND IN THE HPCI
- SYSTEM, ON 10/23/89 WITH THE UNIT AT 100% POWER, THE TEMPERATURE AT A POINT BETWEEN THE INJECTION AND ISOLATION VALVES WAS 275* F AND PRESSURE WAS 47 PSIA, A STEAM P0CKET HAD PROBABLY FORMED ON THE UPSTREAM SIDE OF THE INJECTION VALVE, LOOSE PIPE SUPPORTS AND DAMAGE TO CONCRETE SURFACES INDICATE
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THAT WATER HAMMERS HAVE PROBABLY OCCURRED, THERMAL FATIGUE MAY HAVE CAUSED DAMAGE TO THE PIPE WALL,
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CONTACTS:
ERIC W. WEISS AND SIG EVENT YES R0GER W. WOODRUFF
REFERENCES:
50,72 #16920, 16978, 16983; MORNING REPORTS 10/24/89, 11/1/89, 11/3/89, 11/6/89; PN0 111-89-71
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DRESDEN 2 AND 3 89-39 UNDER SIMILAR CIRCUMSTANCES, THROUGH WALL PIPE CRACKS OCCURRED AT FARLEY AND TWO FOREIGN REACTORS.
THE LICENSEE HAS NOT INSPECTED HPCI PIPING IN THE VICINITY OF THE INJECTION VALVES AND THE FEEDWATER PIPING.
THE ISOLATION VALVE HAS BEEN CLOSED, THE INJECTION VALVE HAS BEEN OPENED AND UNIT 2 CONTINUES TO OPERATE.
A SIMILAR BUT LESS SIGNIFICANT PROBLEM WAS FOUND IN UNIT 3 AND THE SYSTEM WAS DECLARED INOPERABLE.
QUAD CITIES DESIGN IS SIMILAR AND IT'S PERFORMANCE IS-BEING REVIEWED.
FOLLOWUP AN AIT WAS DISPATCHED AND HAS COMPLETED THEIR INSPECTION.
THE LICENSEE WILL:
REEVALUATE THE PIPE HANGER INSPECTION PROGRAM.
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DEVISE A MONITORING PROGRAM FOR INJECTION VALVE LEAKAGE.
DETERMINE THE ROOT CAUSE OF VALVE LEAKAGE.
ULTRASONICALLY INSPECT PIPING WALLS IN THE VICINITY OF'THE INJECTION VALVES AND FEEDWATER PIPING.
NRR WILL PREPARE AN INFORMATION NOTICE.
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