ML20137K960
| ML20137K960 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, Catawba, South Texas, McGuire, 05000000 |
| Issue date: | 12/10/1985 |
| From: | Miller H, Topping R, Villalva E AFFILIATION NOT ASSIGNED, CONTROL COMPONENTS, INC. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| References | |
| REF-PT21-85, REF-PT21-86, REF-PT21-86-030-000, REF-QA-99900262 PT21-86-030-000, PT21-86-30, NUDOCS 8601240296 | |
| Download: ML20137K960 (3) | |
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%fNy i 'S WC) Wdle la[fo/ 6 ptSS 12/M338 18 DEC SS IRVINE CA USA DC TOs DIRECTOR OFFICE OF INS #ECTION AND ENFORCEMENT U.S. NL'*AEAR MSULATORY COMMISSION SUBJs 18CFR21 REPORTABLE DEFICIENCY IN COMPLIANCE WITH THE REQUIREMENT OF 10CFR21 AND OUR QUALITY ASSURANCE MOSRAM M AM NOTIFYING YOU OF A DEVI ATION WHICH COULD MSULT IN A REDUCTION OF THE INTESRITY OF THE REACTOR COOLANT SOUNDRY. THE FOLLOWING INFORMATION IS PROVIDED AS MOUIMD SY THE NOTIFICATION MOUIMMENTS OF 10CFR21.
1.
MhfE Ace ADDMSS CONTROL CO.4pONENTS INCORPORATED 2567 S.E. MAIN STREET IRVINE, CALIFORNIA 92714 ATTENTION:
H.L. MILLER VICE PMS! DENT, ENGINEERING 2.
FACILITY AND COMPONENTS DUKE POWER COMPANY l
CATAWBA UNIT 2 MESSURIZER DOWER OPERATED RELIEF VALVES I
l 3.
FIRM SUPPLYING CONTROL COMPONENT INCORPORATED 4
I ADDRESS PER ITEM 1 4.
NATURE OF DEFICIENCY DUKE POWER RECENTLY DISASM MBLED THE VALVE ACTUATORS ON THE UNIT 2 CATAWBA PRESSURI2ER POWER O#ERATED MLIEF VALVES. FOR VALVE SERIAL NUMBER 18789-9-1 THE ACTURTOR WAS DISCOVE KD TO HAVE ONLY ONE OF THE REQUIRED TWO SPRINGS i
INSTALLED. THE VALVE WILL NOT FAIL CLOSED ON LOSS OF AIR SUPPLY UNLESS SOTH S# RINGS ARE INSTALLED.
IDENTICAL VALVE ACTURTORS WERE Suppl!ED ON MCSU!RE NUCLEAM STATION UNITS 1 AND 2 AND CATAWSA NUCLEAR STATION = UNIT 1 AND 2.
EACH NUCLEAR STATION HAS l
THREE VALVES, TWS 12 ACTUATORS TOTAL HAVE MEN SUPPLIED. WE ARE CERTAIN THAT THE MCSUIRE UNIT 1 AND CATAWBA UNIT 2 VALVES HAVE SOTH SSRINGS INSTALLED, SERIAL NUMSER 18789-9-1 ON CATAWSA UNIT TWO HAS MEN CORRECTED.
l ON THE OTMR ACTUATORS OUR RECORDS INDICATE SMINGS WEK ISSUED TO ASMMBLY AND TERE IS NOTHINS TO IMICATE THAT TMY MM NOT ASSEMSLED INTO THE UNITS.
I THE OMISSION OF A SPRINS FROM TM 18789-9-1 ACTUATOR APPEARS TO M A i
SINGLE ISOLATED EVENT. WE HAVE NEVER ENCOUNTE ND A MISSING SPRINS IN AN ACTUATOR IN DISASSEMBLY OF ACTUATORS SY OUR FIELD K RVICE PERSONNEL NOR HAVE ANY MEN REPORTED MISSINS PRIOR TO THE DUKE EXPERIENCE.
THE DLME DOWER COM9ANY SHIPMENTS AM THE ONLY CLASS 1 SHIPMENTS WITH DUAL SPRING ACTUATORS.
5.
DUKE ADVIMD VERSALLY SMINS MISSING AT DISASSEMBLY NOVEfeER 18, 1985.
DUKE ADVIM D THEY WERE ALSO DEVIEWINS WHETHER M PORTASLE!
6.
NUMBER AND LOCATION-SEE ITEN 4 7.
CORRECTIVE ACTION: A SDRINS HAS MEN SUPPLIED TO DUKE POWER FOR M RIAL NUMSER 18789-9-1 ACTUATOR.
8.
ADV!M PURCHASERS l
DUKE POWER HAS BEEN ADVISED VIA THIS TELEX.
MSARDS H.L. AILLER j
,,V.P.
ENGINEERING,
1 CCs R.E. TOpp!NS 1
N. SEAUMONT E. VILLALVA CCs OSTEEN-DUKE POWER, CHMLOTTE N.C.
PRINTED AT 1816 PST 12/10/85 f( 09 3
0601240296 851210 i
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POTENTIAL SIGNIFICANT DEFICIENCY REPORT INSTRUCTIONS: Originator - 1. Include as much information as possible on this form and review or9nal with your supervisor.
- 2. Expedite Submittal - Do not wait for resolution. decisions on recommended repair, etc.
Recipients: Refer to N
0 ORIGIN ATOR:
Date SUPERVISOR'S SIGNATbE b ff 4/ os1-Date I7 /dW h
REFERENCES PROCEDURE Identification of Affected item Type of Deficiency (Check) 921101010 Part Number Design O
Testing O
Serial Number 187R9-9-1 Materials O
Q.A. Program O
Location Catawba Naclear Station / Unit 2 Assembly W
Damage O
ltem Description Pressurizar Power Operated Workmanship D Other O
(Explain)
Relief Yalve Description and Extent of Deficiency (Use additional pages if required)
See Attached Page 2 of 2 Disposition by PSDR Review Board q
Datd l u^. M C Nb-Reportable Not Reportable
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DIS,MIBU110N: SEE OA PROCEDURE 1718 03 CA. 4 71 RE V. 4/06
P$tcntialSignificantDeficicncyReport-12/7/85 Page 2 cf 2 Duke Power recently disassembled the three (3) actuators on the Catawba Unit 2 Pressurizer Power Operated Relief Valves.
During disassembly of the actuator for valve Serial Number 18789-9-1 it was discovered that only one of the required two springs was installed in the actuator.
Valve fait close on loss of air is a safety related function for this valve.
Under design conditions, testing at Duke's Marshall Station has shown that valve will not fall close with only one spring.
Note that other two actuators which were disassembled had two springs each.
Duke Engineering records and Maintenance records indicate that discrepant actuator had not been disassembled at the site. CCI Field Service records agree with this.
This would indicate that the valve was shipped from CCI with only one spring.
Valve originally shipped from CCI around September,1981.
Prior to this time CCI drawings were revised to require two springs in the actuator.
Manufacturing Dis-position on the Engineering Order for any parts in progress was " rework".
Manu-facturing records for the valve in question indicate that both required springs were issued at the time of assembly.
No extra spring of the missing type are cu tuntly in stock.
Note that valve was tested for and successfully passed air failure mode during assembly testing at CCI.
This was, however, with no hydraulic loading on the plug.
Nike Osteen of Duke Power advised me of this discovery by telephone on 18 November 1983.
We have since provided the proper spring to Duke Power.
Duke Power has reported this deficiency to the NRC and reconnends that CCI do so under 10 CFR 21.
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