ML16161B254
| ML16161B254 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Mcguire, Catawba, McGuire  |
| Issue date: | 10/31/1980 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Parker W DUKE POWER CO. |
| References | |
| NUDOCS 8012170571 | |
| Download: ML16161B254 (7) | |
Text
tpjR REG&J 05 UNITED STATES NUCLEAR REGULATORY COMMISSION REGION II 101 MARIETTA ST., N.W., SUITE 3100 ATLANTA, GEORGIA 30303 OCT 3 1 1980 In Reply Refer To:
RII:JPO 50-369, 50-370 cQIjj 4
2 50-413 Duke Power Company ATTN:
W. 0. Parker, Jr.
Vice President, Steam Production P. 0. Box 2178 Charlotte, NC 28242 Gentlemen:
The enclosed Information Notice provides early notification of an event that may have safety significance. Accordingly, you should review the Information Notice for possible applicability to your facility.
No specific action or response is requested at this time; however, contingent upon the results of further staff evaluation, a Bulletin of Circular recom mending or requesting specific licensee actions may be issued.
If you have questions regarding this matter, please contact me.
Sincerely, James P. O'Reilly Director
Enclosures:
- 1.
IE Information Notice No. 80-39 w/Enclosure
- 2.
List of Recently Issued IE Information Notices cc w/encl:
M. D. McIntosh, Plant Manager J. C. Rogers, Project Manager J. E. Smith, Station Manager D. G. Beam, Project Manager J. W. Hampton, Station Manager SR 431217 "5R7g
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D. C. 20555 October 31, 1980 IE INFORMATION NOTICE NO. 80-39 MALFUNCTION OF SOLENOID VALVES MANUFACTURED BY VALCOR ENGINEERING CORPORATION PURPOSE:
The intent of this Information Notice is to alert holders of construction permits and operating licenses for nuclear power plants of a potentially generic problem involving the malfunctioning of certain solenoid valves manu factured by the Valcor Engineering Corporation (Valcor). The solenoid valves so involved are designated as Valcor Valve Model No. V52600-554-1. Valcor has informed us that these valves have only been supplied to the McGuire facility; however, since these valves were substituted for solenoid valves of another manufacturer that did not meet the requirements of IE Bulletin No. 79-01 and its amendments, licensees and holders of construction permits should take into account the problem identified in this Information Notice prior to making any similar substitution.
BACKGROUND:
By TWX dated June 27, 1980, Valcor submitted a preliminary 10 CFR Part 21 Report addressing the malfunctioning of Valcor solenoid valves at the McGuire facility. The malfunctioning valves have been identified as Valcor Valve Model No. 52600-554-1. This TWX was subsequently followed by a letter dated July 3, 1980, transmitting a more detailed Part 21 Report entitled,"Quality Assurance Report", a copy of which is attached hereto as Enclosure No. 1.
In brief, the malfunction appears to be an intermittent type wherein the valve fails to cycle from OPEN to CLOSE to OPEN immediately after a sustained period of operation in the energized (OPEN) mode. Although the valves are rated for "continuous operation", Valcor contends that the valves were not designed to meet the operating conditions requiring the immediate cycling from OPEN to CLOSE to OPEN after a sustained period of continuous energization. A major source of the problem, therefore, may be a misunderstanding of the term Vcontinuous operation".
By letter dated July 14, 1980 to Duke Power Company, Valcor transmitted its recommendations in this matter entitled, "Outline Suggested Modification Procedures", a copy of which is attached hereto as Enclosure No. 2.
Enclosures:
- 1. Quality Assurance Report
- 2. Outline - Suggested Modification Procedures.
ENCLOSURE NO. I VALCOR VALCOR ENGINEERING CORPORATIIN 2 LAWRENCE ROAD.SPRINGFELD NEM JERSEY 07081. U.S.A.* (20)j 467,800 TWX 7iQ*965975* CABLE VALCOR QUALITY ASSURANCE REPORT
SUBJECT:
NRC 10CFR21 Reporting
Reference:
Valcor TW. to NRC dated 6/27/80
- 1.
On June 27, 1980, the Duke Power Company advised that a failure to actuate valve Part No. V52600-554-affects a safety-related system.
It was reported that this valve failed to cycle immediately following a sustained period of continuous energization.
Valcor advised Duke.that the'valve was not designed to meet this operating condition.
- 2.
The Duke Power Company indicated that the above part was installed in McGuire Nuclear Station Nos.
I and 2 as part of -the Diesel Generator Control Air Solenoid Valve System providing instrument air to the Diesel System.. Eight valves are involved, reference 3b below.
Valve failure to actuate could impair function of the Diesel Generator which provides power to safety-related electrical components.
- 3.
valcor has reviewed its records and determined that this potential problen is isolated to the following valves shipped to the Duke Power Company for McGuire Nuclear Station Nos.
1 and 2:
Customer Customer P.O. No.
List Part No.
Quantity Serial No.
Date Completed
- a.
C45389 04D-050 (N12145)
(V52600-570-1) 22 1 to 22 10-76
- b.
C45389 04D-052 (N12145)
(V52600-554-1) 8 1 to 8 10-76 C.
C45389 04D-053 (i13163D)
(V52600-555-2) 3 10, 11, 12 5-78
- d.
C45389 04D-053 (N12145)
(VS2600-55S-2) 8 1 to 8 10-76
- e.
C5389 04D-054 (N13163)
(V52600-5542-1) 6 1 to 6 2-78
- f.
C45389 04D-055 (N13163C)
(V52600-5542-2) 4 1 to 4 3-78 go C4J319 94 62D-0
_1 (XI 313C)
(vS 60 51-1) 6 1,7,8#12,13 5-79
<Effic) evs9 9
t 120-l>
s17 1 to 17 5-79
VALCOR INGINEERING Coqp AIity Assr ance 1eport Page 2
- 4.
Subject to a requirement for imediate cycling following continuous energization, Valcor recomends that valves be upgraded by replacement of internal bonnet asembly parts.
Installed valves will require pressure shutdown.
Valcor has coimenced preparation of modification instructions and will report to Duke Power by July 14, 1980.
ENCLOSURE NO. 2--"'
. o.
ALCOR VA.LCOR ENGINEERING CORPORAION 2 LAWRENCE ROAD. SPR*IGOELD, NEW JERSEY 07061. U.S.A * (201) 467-400 TWX 710-M-5976
- CABLE: VAd.COR*
OUTLINE -
SUGGESTED MODITICATION PROCEDURES EFERENCE: Valcor NRC 10CFR21 Report dated 7-3-80.
NOTE: A new Solenoid Assembly that will meet the new criteria without affecting the valve Cv is not readily available.
SAll valves noted in the above referenced report can bi, neodified in the field or at Valcor, by replacement of the Bonnet Assembly.
The valves are to be re-identified by adding a revision letter to Valtor valve Part No. on nameplate. The modification to be coordinated with the Authorized Nuclear Inspveotor.
- Installed valves will require pressure shutdown.
'Modification by list Part Numbers as noted in the referenced
-report.
- a. List P/N 04D-050 (V52600-570-1).
Dis-assemble valve.
Replace Bonnet Ass'y with Bonnet Ass'y P/N V52661-570-1-1.
Re-assemble valve and perform Hydro & Operational tests.
Estimated valve Cv change from 25 to 18.
- b.
List P/N 04D-052 (V52600-554-1).
Dis-assemble valve.
Replace Bonnet Ass'y with Bonnet Assly P/N V52661-554-1-1.
Re-assemble valve and perform Hydro 2 Operational tests.
Valve Cv will change from 2.5 to 1.2.
- c. List P/N 04D-053 (V52600-555-2).
Dis-assemble valve.
Replace Bonnet Ass'y with Bonnet Ass'y P/N V52661-5551-1-1.
Re-assemble valve and perform Hydro 6 Operational tests.
Valve Cv will change from 3 to 2.
Valve similar to 04D-222.
Con't
OUTLINE -SUGGESTED MODIrICATION PROCEDURES
- d. List P/N 04D-053 (V52600-555-2).
Dis-assemble valve.
Replace Sonnet Ass'y with Bonnet ASS'y P/N V52661-5551-1-1.
Re-assemble valve and perform Hydro 6 Operational tests.
Valve Cv will change from 3 to 2.
Valve will be similar to 04D-222.
- e.
List P/N 04D-054 (V52600-5542-1).
Dis-assemble valve.
Realace Bonnet Ass'y with Bonnet Ass'y P/N V52661-554-1-1, Re-assemble valve and perform Hydro & Operational tests.
Valve Cv will change from 3 to 2.
List P/N 04D-055 (VS2600-5542-1).
Dis-assemble valve.
Replace Bonnet Ass'y with Bonnet Ass'y P/N V52661-554-1-1.
Re-assemble valve and perform Hydro 4 Operational tests.
Valve Cv will change from 3 to 2.
g, List P/N 04D-056 (V52600-5551-1).
Dis-assemble valve.
Replace Bonnet Ass'y with Bonnet Ass'y P/N V52661-5551-1-1.
Re-assemble valve and perform Hydro & Operational tests.
Valve Cv will change from 3 to 2.
Valve will be similar to 04D-222.
- h.
List P/N 04D-057 (V57300-5220-1).
Dis-assemble valve.
Replace Sonnet Ass'y with Bonnet Ass'y P/N V573661-5220-1-1.
Re-assemble valve and perform Hydro & Operational tests.
Valve Cv will change from 3 to 2.
Valve-will be similar to 04D-223.
p
IN 80-39 October 31, 1980 RECENTLY ISSUED IE INFORMATION NOTICES Information Date of Notice No.
Subject Issue Issued to 80-39 Malfunction of Solenoid 10-31-80 All nuclear power Valves Manufactured of facilities holding Valcor Engineering power reactor OLs Corporation or CPs 80-38 Cracking in Charging Pump 10-30-80 All PWR facilities Casing Cladding with an OL or CP 80-37 Containment cooler leaks 10/24/80 All nuclear power and reactor cavity facilities holding flooding at Indian Point power reactor OLs Unit 2 or CPs 80-36 Failure of Steam 10/10/80 All nuclear power Generator Support Bolting reactor facilities holding power reactor OLs or CPs 80-35 Leaking and dislodged 10/10/80 All categories G and Iodine-124 implant seeds GI medical licensees 80-34 Boron dilution of reactor 9/26/80 All pressurized water coolant during steam reactor facilities generator decontamination holding power reactor OLs 80-33 Determination of teletherapy 9/15/80 All teletherapy timer accuracy (G3) licensees 80-32 Clarification of certain 8/12/80 All NRC and agreement requirements for Exclu-state licensees sive-use shipments of radioactive materials 80-31 Maloperation of Gould-8/27/80 All light water reactor Brown Boveri Type 480 facilities holding OLs volt type K-600S and or CPs K-DON 600S circuit.
breakers 80-30 Potential for unaccept-8/19/80 All boiling water reactor able interaction between facilities holding power the control rod drive scram reactor OLs or CPs.
function and non-essential control air at certain GE BWR facilities 80-29 Broken studs on Terry 8/7/80 All light water reactor turbine steam inlet facilities holding flange power reactor OLs or CPs*
- Operating Licenses or Construction Permits