ML20098F882
| ML20098F882 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 09/05/1984 |
| From: | Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| CON-#484-735 157, OL, NUDOCS 8410030494 | |
| Download: ML20098F882 (8) | |
Text
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2840811790 SEP Ob lco' c7 -
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00CKETED USNPC Dr. Thanas E. Murley, Director Office of Inspection and Enforcernent - Regi@F10 N122 U. 3. Nuclear Regulatory Cm mission 631 Park Avenue King of Prussia, PA 19406
Subject:
Limerick Generating Station, Units 1 & 2 Significant Deficiency Report No.157 (Attachment 1)
ASCO Solenoid Valves Installed on Velan Air Operated Valves NRC Construction Permit Nos. CPPR-106 and 107
Reference:
Telecon - J. P. Evans (PECo) to Jane Grant (USNRC),
dated 9/4/84 File:
QUAL 2-10-2 (SDR No.157)
Dear Dr. Murley:
In ccrnpliance with 10CFR50.55 (e), we are subnitting our Significant Deficiency Report concerning ASCO solenoid valves installed on Velan air operated valve assernblies.
We trust that this satisfactorily resolves the iten.
Please do not hesitate to contact us if further information is required.
Sincerely,
$SNy Copy to: Director of Inspection and EnforoEinent United States Nuclear Regulatory Comnission Washington, DC 20555 S. Chaudhary, Resident NRC Inspector (Limerick)
JNM/pdO9048403y Attachnent S
cc: Judge Lawrence Brenner (w/ enclosure)
Judge Peter A. Morris (w/ enclosure)
Judge Richard F. Cole (w/ enclosure)
Judge Christine M. Kohl (w/ enclosure)
Judge Gary J. Edles (w/ enclosure)
Judge Reginald L. Gotchy (w/ enclosure)
Troy B. Conner, Jr., Esq.
(w/ enclosure)
Ann P. Hodgdon, Esq.
(w/ enclosure)
Mr. Frank R. Romano (w/ enclosure)
Mr. Robert L. Anthony (w/ enclosure)
Ms. Maureen Mulligan (w/ enclosure)
Charles W. Elliott, Esq.
(w/ enclosure)
Zori G. Ferkin, Esq.
(w/ enclosure)
Mr. Thomas Gerusky (w/ enclosure)
Director, Penna. Emergency (w/ enclosure)
Management Agency Angus Iove, Esq.
(w/ enclosure)
David Wersan, Esq.
(w/ enclosure)
Robert J. Sugarman, Esq.
(w/ enclosure)
Martha W. Bush, Esq.
(w/ enclosure)
Spence W. Perry, Esq.
(w/ enclosure)
Jay M. Gutierrez, Esq.
(w/ enclosure)
Atomic Safety & Licensing Appeal Board (w/ enclosure)
Atomic Safety & Licensing Board Panel (w/ enclosure)
Docket & Service Section (u/ enclosure - 3 copies))
James Wiggins (w/ enclosure)
Timothy R. S. Campbell (w/ enclosure)
2840811790 Limerick Generating Station, Units 1 & 2 Significant Deficiency Report No. 157 Concerning Misapplication of ASCO Solenoid Valves 1.0 Introduction This report concerns the improper application.of ASCO Solenoid valves controlling air supply to Velan air operated valves in the Limerick Emergency Service Water System.
2.0 Description of Problem The existing pilot solenoid valves (ASCO Model NP344A71E) are four way valves incorporating a design that provides the capability to control double acting valve operators (i.e. - ones not provided with cpring return to a designated position). The air supply to these pilot solenoids does not ensure ocznplete travel of the solenoid valve piston thus permitting partial venting to the atnesphere of the air supply to the valve operator. As a result, the subject valves occasionally do not stroke when called upon to do so, as was discovered during pre-operational testing.
3.0 Corrective Action to be Taken The four way solenoid valves on all Dnergency Service Water valves are being replaced by three way solenoid valves which will not be subject to the condition 'escribed above. The manual shutoff valves upstream of the pilot solenoid valves are also being replaced to increase air supply flow. The affected ESW valves will be tested to verify proper operation after the work is emplete. This work will be ccnplete by September 15, 1984.
4.0 Safety Inplications Failure of pilot solenoid valves to stroke the ESW valves could result in loss of emergency service water inventory and/or loss of the required cooling water to safety related ECCS heat exchangers.
JM4/pdO9048404
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PHILADELPHIA ELECTRIC COMPANY p
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ENGINEERING & RESEARCH DEPARTMENT.
USNBC REPORTABILITY EVALUATION Rev. 0 11/14/80 Rev. 1 12/15/80 Project:
h LGS
{PBAPS Evaluation No. d ( (( 7 Reference':
LGS QA Plan, Yolume I, Appendix 5 and Exhibits
-III and IIII I.
Description of Potential Def
,NoncomplianceorSfgnificant Deficiency: EC W ol( opete el n/ure-Ja/
A4 Not
~Laedb.aww a es.,,w.
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%o II. Reference Documents (Attach As Appropriate) :
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III.10CFR50.55fe) Evaluation 1.
L The problem represents a:
Ies No Breakdown in the QA Program C
Deficiency in Final Design L.
Deficiency in construction Deviation from Perfaraance b
j Specifications C
nationale:
'INC VelWS Ed MY *D*/Ok OS r
Inh /e2 i C
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7, 19 L
Revisiin 10
. E C.
We consicler the j?roblem wi7% Nbkb n I -way ASco Solet)0k/ wlues fo be Sf/?/Ncon Y.
t We w/// ref c e c,// /Ae.s e solene.W va/ues w~ff h
Hew gua//fied ASCo 3 - kny s oledoid volues.
The byp.ss leokay c is the raw < 0 fera tors was corrected by repbcisg the casthy safs end gekets. This pr.blem is wot reporMle suce tsen adesijn, eueke14o er extessie repe<h was so regutred. De problem. ~ils the disks suckup 4
- lbe. clo.sdAudifion it.heing. corte_cfed..by...qd' vsfoients oE 7
... +he:4 tem htfdi t& spriny. pre-Ioad...Thisfesblem..-
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m J 2840811790 Page 2 cf k If above are all "Ro stop.
This is not reportable under f
If any of above are "res", proceed to III.B.
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B.
The problem could, if uncorrected, adversely affect the safety plant operation sometime during its life.
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hres No Bationale:
'The We blesy> ee<t/e) fesu/f
'A lc9.C e> 5. C h W w n e s N/' WC e Mlc/~.
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If above is'*Eo", stop. This is not reportable under 10CFR50.55 (e). If "Yes", proceed to III.C.
l, c.
The problen is considered significant (vill require extensive evaluation, redesign or repair to meet the requirements of the s1R or construction permit or to otherwise establish the adequacy of e ites to perform its intended safety function)-
Yes No C
Eationale:
[Se e Du e e.2 A Set' re fionele C
IY. 10CFR21 Evaluation 1.
The problem represents a deviation in a component, facility or activity relating to:
Yes No Assuring coolant boundary
]
L integrity The ability to' shut down D
the reactor and maintain b
it shut down b..
The ability to. prevent or mitigate an accident-Rationale: _WC b$f1n revbl NSG'lb in SOSf Cf GroMW Soc >rvire WWff L.
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2840811790
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Page 3 cf k If above are all "No" stop.
This is not reportable under 10CFB21.
If any of above are "Yes".., proceed to IV.B..
B.
The Problem Relates to a:
Yes No
.euve e4 co.-en.
El 0 Camponent that has been installed, used or operated
~
b Facility offerei for acceptance U
Condition that could contribute to exceeding a safety limit nationale: TbeY n/Mc wr/* SW/ h W1e! O 'bb4 kjf/A e aft-er $PSO4
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. C, If above are all *Bo" stop. This is not reportable under 10CFR21.. If any of above are'".Yes"_, proceed to IY.C.
C.
The probles could have created _a substant_ial.safet?
hazard
- i..
Yes No I
nationale: TLp usr/tys wefc Scand +e.
creth : e ~
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I itnDroDerlv durin4 D/t' - OA Y$/?G - Du ** $ $
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Ah4fe 65 /bb Nblt;f/>7 s' dh cro rould A/c/ At s'e
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If Above is "No', stop., This 's not reportable under 10CT321.
i If "Yes, a verbal report to the ERC is required within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> -
a i
(per QAP) and a written report within 5 days, unless there is information that the ERC has already' been adeguately informed.
Is such information available?
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]Yes]No_
i If "Yesa, record pertinent data concerning this prior
,4 BBC report (from, to, date):
g
. 7,-21 Eevision ~10
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2b40811790 Page h cf k s.
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Conclusion Yes No 4
Reportable under 10CNRSO.SS(e) h'
~
Reportable under 10CPR21 TI.'Beport (When Reg' ired) u Telecon to be made to NBC by:
(Date)
Responsibility for Telecon:
Report to be sent to ERC by:
(Date)
Responsibi-lity for Report:
TII. Approvals Evaluator: M )J 1r /8/I 7 /!P" Date:
y
<s Approved By:
sanager, QA 8M,4/uIbh9M. avlbPJ 9!# 8N Date:
' LGS Project Ranager Date: f!8[8#
~
Others 8 4 N /
/ /
CDPy to:
QA office Br. Head / Local File QUAL 2-10-2 (Eval. No.b
~
LGS Site QA Br. Read LGS Prof. Egr.
Others" 7 Meikow// r t*
Project Pile QUAL 2-10-2 J
l Z.- 2 2 Revision 10
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