ML042940222

Condition Report No. 02-02552

ML042940222
Person / Time
Site:	Davis Besse
Issue date:	06/12/2002
From:	- No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2003-0187, NOP-LP-2001-01 02-02552
Download: ML042940222 (2)

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Ad as VW PAGE 0A2 NOP LP-2001-01 Davis Bosse CONDITION REPORT

] 02-02552 TITLE: INSPECTION PLAN!P-M-030 REACTOR VESSEL EXTENT OF CONDITION DISCOVERY DATE' TIME EVENT DATE TIME SYSTEM IASSET 8/92002 NIA

/9102 NIA 084-02 NWA EQUiPENT DESC RiPTION Incore Guide Tubes DESCRIPTION OF CONDITION and PROBABLE CAUSE (it known) Sumnnarrie any attachments. Identify what, when.

whore, why. how.

0 This Condition Report is generated based on Inspection of the Incore Instrumentation Guide Tubes R

performed under Inspection Plan IP-M-030. The requirements of NG-EN-00324 need to be considered in the evaluation of this CR.

G The below observations were made from the Inspections of the 52 incore Instrumentation guide N

tubes performed using the magnetic wheeled crawlor.

A

1. Remnants from what appears to be tape were found on tubes 22, 33, 38, 49, and 51. A tape-like l

residue was found on several other tubes and on the adjacent reactor vessel surface.

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2. Tubes 1. 12, 13. 14, 42, 43, 44, and 45 are in the path of the rust/corroslon stain down the side of N

the reactor vessel between approximately 270 to 305 degrees (CR's 02-01690 and 02-02498). On several of these tubes, the penetration annulus at the vessel was completely covered by this stain.

3. A small trails of boric acid residue were found on the bottom of the reactor vessel. Tubes 1. 3, 27,

28. and 32 are In the path of this trail and have boric acid residue around the penetration annulus and tube surfaoe.

4. Light corrosion was noticed around numerous tube penetrations. This corrosion was similar to that noticed on other areas on the surface of the reactor vessel with chipped or peeled paint.

There were no 'popcorn boron crystals, that were indicative of CRDM nozzle leakage, found around any of the incore nozzles. Details of the inspection results for each tube will be documented in the inspection report data sheets.

Following review of the initial Inspection results and discussions with Framatome, the inspection plan was revised to direct obtaining samples from select areas. Samples were taken from the rust/corrosion stain and a boric acid residue trail on the side of the vessel and from 12 select tubes.

The tube sampling included removing all material around the tube penetration annulus down to bare metal. Following this sampling, the penetration annulus around 9 tubes was visually Inspected. No degradation of the surface metal was Identified around any of the tubes Inspected.

IMMEDIATE ACTIONS TAKiEN I SUPV COMMENTS (Discuss CORRECTIVE ACTIONS completed, basis for closure.)

NIA QUALITY ORGANIZATION UsE ONLY IDENTIFIED BY(Ch~eck one)

Q Self-Reyealed ATTACHMENTS Qu31lty Org. Initleted Jyet

] IrndhIduuVtWo& Group 1 Internal Oversioht Quality Org. Follow-up Ci Y*L 9 No R SupervIslon/Managernnt Ci External Oversight Yes DUO ORIGINATOR ORGANZATIONuPERVOR DATE I PHONE EXT.

HENGGE.C PE 8/1212002 CUNNINGS, J 1 6t1212002 8251 Pace I of 2 tY)

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B PAGE 03 NOP-LP-2001-01 Davlz*Bosse CONDITION RE PORT 02-02552 TITLE:

INSPECTION PLAN IP-M-030 REACTOR VESSEL EXTENT OF CONDITION SRO i EQUIPMENT EVALUATION IMMEDIATE

'ORGANIZATION MODE CHANGE REVIEW OPERABLE I REQUIRED INVESTIGATION REQUIRED NOTIFIED RESTRAINT L E_

Yo J No N:i Ye t6 No N/A

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Yes 9 No NWA 0Z Yes C No A

MODE! ASSOCIATED TECH SPEC NUMBER(S).

ASSOCIATED LCO ACTION STATEMENT(S)

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DECLARED INOPERABLE j REPORTABLE?

One Hour NJA APPLICABLE UNIT(S)

P (Dato I Tim) ln)e8 2No E

6/12/021511

,Eight Hour j

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~~EOE Required___

A COMMENTS T

This issue will be tracked as a Mode 4 restraint against T.S. 3.4.6.2, RCS Leakage, pending an I..

evaluation of the aforementioned issues per NG-EN-00324.

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U SRO -UNIT 1 iSRO - UNIT2 DATE Horvath. E Sternbergen. C 6/1212002 CATEGORY IEVAL ASSIGNED ORGANIZATIONi DUE DATE i R J REPORTABLE?

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CH 10/31/2002

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CRPA TREND CODE8 CompTyp./IDLCuu u

REPORTABILITY REVIEWER I

Process I Actlvty I Caut Code(s)

(If Cause Tor W)

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MRB 71 06/13/02 INVESTIGATION OPTIONS CLOSED BY

!DATE

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