ML20058E087
| ML20058E087 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 10/29/1990 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML18057A550 | List: |
| References | |
| IEB-79-15, NUDOCS 9011070019 | |
| Download: ML20058E087 (4) | |
Text
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jo UNITED STATES
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NUCLEAR REGULATORY COMMISSION 6l WASHINGTON, D. C. 20555
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SAFE 1Y EVALUATION BY 1HE OFFICE OF NUCLEAR REACTOR REGULATION REGARDING,CLOSEpul,.plJE,ByLLETjN,L9;j5 DEEP DRAFT PUMP DEFICIENCIES CONSUPERS POWER COMPANY h
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O'n July 11, 1979, the NRC issued IE Dulletin No. 79-15 inforn.ing all licensees that Connonwealth Edison Con.pany had identified nanufactuting deficiencies in L
high pessure core spray,1cy pressure core sprey, and residual test recioval punps nerufactured by Ingersoll-Rand (1-R) Correr.y. Caraeron Pun.F Division. The bulletin asked liter. sees to deterr.ine if pun.ps of sinii16r construction were
~ used in their facilities, 6nd, if, so, whether the sane dificiencies could exist.
In NUREG/CR-3049: "Closecut of IE Bulletin 79-15: Deep Draft purp Deficiencies,"
the NFC staff and-its ccr.tractcr sunnarized the industry effort and closed out the issut with the exception of following facilities and types of punps:
1.- Beaver Valley Unit 1: Two Johnston auxiliary river water putr.ps.
- 2. Indian Point Units 2 and 3: Two 1-R containnitnt recircolation punps in each plant.
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- 3. Maine Yankec: Three. Byron-Jackson contaire.er.t spray punps..
4.'Nine Mile Point Unit 1:
Four Worthington core spray and two Worthington emergency: servict water pun.ps.
- 5. 0yster Creek Unit 1:
Four Byron-Jackson en.ergency service water pumps and c
two Layne-Bowler diesel driven fire protection punips.
- 6. Three F'ile Island Unit 1:
Fourteen Peerless purps.used for river water and fire protection purposes.
- 7. Hatch Unit 2: Two 1-R core spray pumps.-
- 8. Big Rock Point: Two Wot thington pun:ps used for fire protection purposes.
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9.. Palisades: Three Worthington punps used foi fire protection purposes.
',DJSCUSSION Based on the staff's review of related NRC inspection reports, the issue was closed for Beaver Valley Unit 1, Oyster Creen Unit 1, and Hatch Unit 2.
For the ren.ainir.g. facilities listed above, the st6ff requested additional inferination.needed to conplete its review. The required additicral infortnation
. requested froni the above n.cntiontd facilities included the following:
1.
The' type and application of the pun:ps in question.
1 2.
Drawings, sectior.61 assen.blies and parts list of the punips in question.
9011070019 901029 PDR ADOCK 05000255 Q
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o 2-3.
Applic6 bit p810s of the pumps in question.
4 Detailed n'aintenente history of the pupps in questioti.
5.
Testing requiroents, prendures and rtsults for both hydreulic and vibration pararneters in rtctnt years for the punps in question.
The manufecturing deficiencies identified by lE Bulletin 79-15 can be sunmarind tinto three arees:' esstably error, out of specific 6 tion clearance, and deneged parts. Althoust c11 three deficiencies will eventually cause detr6dation in Junp perforni6nce, degradation sufficient to influence punip performidnce night oct ae detected terly in the servict life of the punip, f L' REG /CR-3049 proposed e lorg running tine (48 to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />) on a seltcted sorple punip in each plant to detertrine whether deficiencies of the types identified in Eulletin 79-15 existed in those pun.ps. However, beceuse no two purps are ider tial, thtst ser.ple runs niight ntit identify deficitricies it, til pun ps.
The n.ethod proposed in f UREG/CR-3049 rnight detect sone dificier.cies urly.
In Scot ceses, these runs can ct.13 be perforn.ed in nini-flow conditions which iright ause oore don.ege 1o ihe punps etbei thor, thet or15119 fron potential deficitt.cies.
Revitw of the subo.itted infoto.otion leads tie Steff to conclude that periodic surveilltrces, such as those required by inservice testing of technical sptifiution survtillance nquittoents, provide the'nost effective nuns to dettet the Eu11etin 79-15 deficiencies. An exercination of test tuults fron. petiodic surveillances provides en edtquote n'ethod to detect sericrrence degredatior. and to idertify 6hy detricier,tel offects idtt.tified it.
Culletin 79-1E.- If tht records from the past fivt ye6rs do nct reveal arr sign cf perforr.ionte degredatier., it un be concluded that tht punt will not operiuite cry edverst (ffects frone these types of deficiencies, fer the follnir g facilities, the litet. sees havt tehn tht' torrectivt actiot 5 ducribed below to ensure that the deficiencies identified in Bulletin 79-15 do not edvusely inrect the punts in their fat.ilities.
1.
Indi6n poir.t l' nit 2: The two conteiricient tecirculetion I-R pun:ps are tested regularly in accordance with the ASME Section XI it service testing re quiren ert s.
Test results collected fron 1981 to.1989 show no sign of perfot ni6nte degr edation. Maintenance records' sinu 1974 indicate both nurips needtd litt1t neintenance.
On the besis of these results, the staff aos concluded that the two I-R puinps are not adversely effected by the Eullttin 79-15 deficiencies. The issue is n solved for Indian point Unit'2.
2.
Indien point Unit 3: The two contairinier.t recirculation I-R pun;ps are tested regularly in accordarice with the ASME Sectics: XI inservice testin9-nquironents. M61nter.ance records inditete thet one of these puitps wes itbuilt extensively after it failed one of these tests. Othei test.
results collected froni 1978 to 1989 show no sign of perforn.ance degredation.
l-On thi tv.,1s of these results, the staff has concluded that the two I-R pun.ps are no _ lor.ger adversely effected by the Bulletin 79-15 deficiencies.
l The is',ue is u solved for Indian Point Unit 3.
E 3.
Maine Yankee: The three Byron-Jackson punps were periodicelly surve111u.ct testol ir. 6ccord6r to with the ASME Section XI inserviu ttsting nquireinents.
Test lieic (elletted betwcen 1984 end 1989 indiate no perforn.cnct I
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degradation in those pumps. On the basis of these results, the staff concluc'ed that the Bulletin 79-15 deficiencies do not adversely in. pact these purps. Tbt issue is resolved for Maine Yankee.
4.
Nine Mile Point Unit 1: The six Wctthington purrps were tested regularly in accordance with the ASME Section XI inservice testing requirements.
Mainter.ar.ce records show that two core spray punips, 111 (05-1985, 03-19F6),
tr.c112(05-85,08-85,03-87) were rebuilt several times. The surveillerce requiren:ents were able to detect the deficiencies en a tin,ely basis. Recent test results show rio sign of perforcience deterioration. The staff has concluded that the Bulletin 79-15 deficiencies have been adequate.ly addressed for these punps. This issue is resolved for Nine Mile point Unit 1..
5.
Three Mile Islanct Unit 1: The issut was closed out in NRC Inspection Percrt 80-29. Hcwever, due to scoe r.isccnnonication, it was erroneously r(opened.in NURE0/CP-30t.9. A recer.1 discussion. detern;ined that til 14 purlut punts were tested regularly, anc' a typical surveilltrce example of thru nuclear se.tvict risen-water rurps wert exanined by the NRC staff.
Fuefit t'st tesults show no indication of perforriance.degtedation is ery e
of these turnps. On the besis of these results, th staff concluded that the Eu11etin 79-15 deficiencies do not adversely irnpact these punps.
The issue is resolved for Three Mile Islanc' Unit 1.
6.
P.19 Rock Point:. Technical specification surveillerce requirenents require periodic.testirig on these two fire 5ttvice puros te verify their oper6bility.
Test date collected fron< the past five Stars slow no sigi.s of perforniance degradation. On the betis of these results, the steff concludes thet the Bu11(tin 79-15 deficiencies do not adversely inpact these purps. The issue ist resolved for Cig Rock Point.
E 7.
ft.lisades: ~ Since the thru fire protectiot,'punps do not fall vithin the scope of ASME Secticr. XI inservice testing requirenents, their operebility j
was verifitc' by technical srecification surveillerce requiretrents.
1 Fuults fror, the pest five years shcw no noticeable degradation in r e rforr.ar.ce. On the basis of these results, the staff concluded that the l
Bulletin 79-15 deficiencies do not adversely inpact these pornps..The i
issue is' resolved for Palisedes.
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,C,0NCLUSION y
One of the cione inportent furictions for surve-l11er.ce testing is to detect
. deficiencies early, so that proper corrective ection can be taken before a con;ponent beton es. inoperable.. Periodic surveillerce is especially effective when a slow deteriorating process is tekirg plice.. For the types of deficiencies ider.tified by Bulletin 79-15, all affected pun as have bun tested n4ary tiraes silice the issue was identified. Sorre purps we re found with deficienciet requirirg utensive npairs of the pun.ps. Ma nier.ance records indicate that all it'entified c'eficier cies were adequetely carrected. Other punps have undergone periodic surveilltrces with'no detritier.tal effects being identified.
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Because purp survtillence ',s a continuous requirenetit that applies to all offtcted pupps, the staff believes that the types of deficier.cies identified in Eulletin 79-15 which could result in potential pupp feilures have been heretofoie detected. Therefore, the staff colicludes that eri adequate basis exists to resolve the safety concerns identified in Eu11etin 79-15 and thusBulletin 79-15 is considered closed.
Dated: October 29,1990 Principal Contributor:
H. Shaw 2
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