ML042990025
| ML042990025 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 10/01/2002 |
| From: | - No Known Affiliation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2003-0187, NOP-LP-2001-01 02-07059 | |
| Download: ML042990025 (2) | |
Text
NOP-LP-2001-01 DAvl>.ESestco COONDITION REORT t Itfy umber o R t
02-02f7052 TITLE: PRELIMAINARY RESULTS FROM ANALYSI5SOF INCOPe NOZ7LE SAMPLES_
913012002 N/A 93012002 NIA 08-t-2 NIA EQUIPMENT'DESCRIPTION Incore Guldc Tube~s DiESCI1P'T-ION'OF CO0N"DITION and PROBABtLE CAUSE (If known)n Summarize atny attachrnonts. Idetntify what. when, whert. why, how.'
OCondition Report 02^02552 documented the res ults; from the Extent of Condition InSpection of the 52 R
Incore Instnrmentatlon Guide Tubes performed under procedure EN-OP-01500 (previousl Inspection Plan IP-MMOU0.AS documented In CR 02-02552, a number of th 7Gor Geuide Tube X
penetrations had boric acid residue and rust/corrosion stains around the anulus area. Following thl G
inspection, and discussions t1h Framatome, samples were tasen from the rust/corrosion stain and a N
Cboric acid residue tin Ihe side of the reactor vessel and from 12 select tubes. These samples A
were sent to Framatome for analysis to determine if the source of the material around the incore A
nozzles could be Identified as either runoff from cleaning of the head or pote~ntil leakage from the T
incore nozzle itself.
I The preliminary results of this analysis (Draft Framatome report 51-5020797-00) "provide conflicting Indications regarding whether or not the flow traIl and IMI nozzle deposits could have been from a N
common source. Given these conflicting indications, it is not possible to definitively conclude with the available Information that the flow trail and nozzle deposits had a common source." Some analysis results presented In the report indicate different origins for the now trail and nozzle deposits n 1 oore nozzle Icak. Discussions with Framatome and Davis-Besse personnel
-'indicate these results may also e ue to sampling uncertainties. Framatome has been requested to determine If these results will change the recommended actions for the incore nozzles contained in Framatome report 51-5019705-00 (which appears to still be a draft report).
IMMEDIATE ACTIONS TAKEN ISUPV COMMENTS IDiscu6s CORRECTIVE ACTIONS completed, basis ior closure.)
N/A QUALITY ORGANIZATION USE ONLY IDENTIFIED B}Y (Ch-ck -one) l-l Su.Revoald ATTACHMENTS Cuality Org. Infilawed t.i Yes li 1ndividuauWoxk Group Iniemal Oversight Quality Otg. Follow-up V. Yes Ntic 0 Suporvislon/Manasoornt 0 External OvrsWgt C Yest No ORIGINATOR ORGANtZATION DATE SUPERVISOR f DATE
'PHONE EXT.
HENGGE.C PE 101112002, CUNNINGS. J
, 1011)2002,
8251 Page 1 of 2 oIda~jaa IS909686717 It':LT ZOO Z/L 0 /O T
NOP-LP-2001-01 DavlsBcesao CONDITION REPZRTCR Number 02-07059 TITLE: PRELIMAINARY RESULTS FROM ANALYSIS OF INCOPf NOZZLE SAPLFS DISCOVERY DATE I TIME EVENT DATE TIME -SsTEM I AS8ET#
9/30/2002 N/A
,/3012002 N/A 08.1-02 NIA EQUIPMENT DESCRIPTION Incore Guide Tubes DESCRIPTION OF CONDITION and PROBABLE CAUSE (if known) Summarize any attachmant3. Identify what, when, where, why, how.
Condition Report 02-02552 documented the results from the Extent of Condition Inspection of the 52 Incore Instrumentation Guide Tubes performed under procedure EN-DP-01500 (previously R
Inspection Plan IP-M-030). As documented In CR 02-02552. a number of th6Jrcore Guide Tube j,
penetrations had boric acid residue and rust/corrosion stains around the anulus area. Following this G
inspection, and discussions w1thFrarnatome, samples were taken from the rustlcorrosion Ctain and a IN (i&
acid residue trn the side of the reactor vessel and from 12 select tubes. These samples A
were sent to Framalome for analysis to determine if the source of the material around the incore A
nozzles could be Identified as either runoff from cleaning of the heed or potential leakage from the T
mncore nozzle itself.
I The preliminary results of this analysis (Draft Framatome report 51-5020797-00) "provide conflicting 0
Indications regarding whether or not the flow traIl and IMI nozzle deposits could have been from a common source. Given these conflicting indications, it is not possible lo definitively conclude with the available Information that the flow trail and nozzle deposits had a common source.' Some analysis results presented In the report indicate different origins for the flow trail and nozzle deposits ln a
aI in-core nozzle leak,; Discussions with Framatome end Davis-Besse personnel
-'indicate these results may lso be cue to sampling uncertainties. Framatome has been requested to determine If these results will change the recommended actions for the incore nozzles contained in Framatome report 51-5019705-00 (which appears to still be a draft report).
IMMEDIATE ACTIONS TAKEN I SUPV COMMENTS (Discuss CORRECTIVE ACTIONS completed, basis for closure.)
NIA QUALITY ORGANIZATION USE ONLY IDENTIFIED BY (Check one) i Self-Roviod ATTACHMENTS Ouality Org. Initiated lni Yes U lndividuat/Work Group X Internal Oversight Quality Org. Follow-up I I Yes Aid 0 Suporvislon/Managornent 0 External Ovreigh.
C Yes Y
No ORIGINATOR oRGANZATION DATE SUPERVISOR DATE PHONE EXT.
HENGGE. C PE 10/1/2002 CUNNINGS. J 10/1/2002 a251 Page 1 of 2 Z9 39Vd 4I'd~1 3
1S0868E.T' V:L1i Z0ez/LO/01