ML15217A309
| ML15217A309 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 08/01/2015 |
| From: | Sutherby K Namco Controls |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML15217A309 (10) | |
Text
08/01/2015 U.S. Nuclear Reoulatorv Commi.*sion Oneration.* Center Event R*nort Pn*O Part 21 (PAR) Event# 51280 Rep Org: NAMCO CONTROLS Notification Date / Time: 07/31/2015 14:27 (EDT)
Supplier: NAMCO CONTROLS Event Date I Time: 05/19/2015 (EDT)
Last Modification: 07/31/2015 Region: 1 Docket #:
City: ELIZABETHTOWN Agreement State: Yes County: License #:
State: NC NRC Notified by: KEVIN SUTHERBY Notifications: RAY MCKINLEY RIDO HQ Ops Officer: STEVE SAN DIN GEORGE HOPPER R2DO Emergency Class: NON EMERGENCY CHRISTINE LIPA R3DO 10 CFR Section: GREG WARN ICK R4DO 21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE PART 21/50.55 REACTORS EMAIL PART 21 REPORT INVOLVING LIMIT SWITCHES EA180 AND EA170 MANUFACTURED IN A SPECIFIC DATE RANGE The following information is an excerpt from a Namco Controls fax:
Subject:
Notification of Product Anomaly Namco Controls Division of Dynapar Corp EA1 80 & EA1 70 Limit Switches Manufactured March 25th 2014 through December 30th 2014.
Dear Sir(s) / Madam(s),
"The purpose of this letter is to notify you of our resolution for the subject anomaly that was brought to our attention by the Nebraska Public Power District, Cooper Nuclear Station in Brownville, NE via our rep network (Mr.
Curt Duphill) on May 19th 2015. On May 30th our senior engineer, Mr. Troy Kloss, visited the plant site during a plant shutdown to investigate the issue and determined that a Part 21 investigation was warranted. Dynapar's Namco Controls business sent out an early indication notice to customers as part of the investigation on 6/3/15 which included switches of date codes 1214 and 1314 (week-year). As a result of this initial notice, a second reported potential anomaly was identified by Salem Nuclear Power in Hancocks Bridge, NJ. However these switches at Salem were replaced previously and no root cause analysis was performed prior to the switches being discarded.
"Because of this anomaly the nuclear limit switch may not reliably state the condition of the device (in this case a main steam isolation valve) that the switch is measuring and could be a potential safety hazard depending on the
-nuclear power plant control logic.
"As a result of our internal investigation, we isolated the switch performance degradation to a compression spring
08/01/2015 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2
'in the limit switch assembly. We have validated lot control traceability of the compression spring in question, which contained 1100 suspect springs, to shipments within the subject date range and have determined 417 Namco limit switches were shipped to US customers with this potential anomaly. We are notifying the affected customers- see included list. In addition, Namco Controls has changed our inspection criteria as of 07/31/2015 for this item in order to prevent future occurrences.
"At this time, we have generated a Technical Bulletin (TB1501) summarizing the conclusions and recommendations. We will notify all customers, both domestic and foreign, by August 7th 2015.
"If you have any questions or concerns, please direct them to Quincy Hill, Quality Manager at qhill@dancon.com.
"Thank you.
"Kevin Sutherby "Vice President & General Manager "Namco Controls Division of Dynapar Corporation "ksutherby@dancon.com "910.862.5411 (office)
"2100 West Broad Street, Elizabethtown, NC 28337" The part numbers impacted are:
EA170-1 1302,- 12302,-21302,-31302,-32302,-41302,-42302-,51302, and EA1 80-11302,-il1307,-I11309,-I11402,-12302,-12307,-12309,-1 2402,-21 302,-21 309,-21402,-22302 ,-22309,-31302,-
31 309 ,-31402,-32302,-32309,-32402 at the following facilities:
Farley Nuclear Plant, Callaway Energy Center, Palo Verde Nuclear Generation Station, Fermi 2 Nuclear Power Plant, Millstone Nuclear Power Station, North Anna Power Station, Catawba Nuclear Station, McGuire Nuclear Station, Robinson Nuclear Plant, Harris Nuclear Plant, Columbia Generation Station , Arkansas Nuclear One, River Bend Nuclear Station, Waterford 3 Nuclear, Clinton Nuclear Station, LaSalle County Generating Station, Braidwood Generating Station, Limerick Generating Station, Byron Generating Station, Quad Cities Generating Station, Perry Nuclear Plant, Plant Hatch, Cook Nuclear Plant, Cooper Nuclear Station, Seabrook Station, Duane Arnold Energy Center, Salem/Hope Creek Nuclear Generation Station, South Texas Nuclear Project Electric
- Generating Station, Watts Bar Nuclear Plant, Wolf Creek Nuclear Operating Corporation, Prairie Island Nuclear.
Jul. 31. 2015 2:27PM No, 5947 P.1
_Dyvnapar Corporation TO:
United States Nuclear FROM: Kevin Sutherby, Regu latory Com mission Vice President and General Manager Namco Controls Division of Dynapar Corporation FAX: (301) 816-5151 FAX:
SuaiEcr: Part 21 Notification DATE: July 311 2-015 COMMENTS:
,See attached letter for Part 21 notification, 2100 West Broad Street- Elizabethtown, NC 28337 800.390.6405 803060
Jul. 31. 2315 2:27PM No, 5947 P.2 Dvnapar Corporation July 31, 2015 Document Control Desk United States Nuclear Regulatory Commnission Washington, D.C. 20553
Subject:
Notification of Product Anomaly Namnco Controls Division of Dynapar Corp EAl80 & EA17O Limit Switches Manufactured March Q5t*i 2014 through December 3011 2014
Dear Sir(s) / Madam(s),
The purpose of this letter is to notify you of our resolution for the subject anomaly that was brought to our attention by the Nebraska Public Power District, Cooper Nuclear Station in Browaville, NE via our rep network (Mr. Curt Duphull) on May 19th 2015. On May 30th our senior engineer, Mr. Troy Mloss, visited the plant site during a plant shutdown to investigate the issue and determined that a Part 21 investigation was warranted. Dlynapar's Namco Controls business sent out a~n early indication notice to customers as part of the investigation on 6/3/15 which included switches of date codes 1214 and 1314 (week-year). As a result of this initial notice, a second reported potential anomaly Was identified by Salem Nuclear Power in Hancocks Bridge, NJ. However these switches at Salem were replaced previously and no root cause analysis was performed prior to the switches being discarded.
Because of this anomaly the nuclear limit switch may not reliably state the condition of the device (in this case a m~ain steam isolation valve) that the switch is measuring arnd could be a potential safety hazard depending on the nuclear power plant control logic.
As a result of our internal investigation, we isolated the switch performance degradation to a compression spring in the limit switch assembly. We have validated lot control traceabilit of the compression spring in question which contained 1100 suspect springs to shipm~ents within the subject date range and have determined 417 Narnco limit switches were shipped to US customers with this potential anom~aly. We are notilying the affected customers 7- see included list. In addition, Namco Controls has changed our inspection criteria as of 07/317/2015 for this item in order to prevent future occurrences.
At this time, we have generated a Technical Bulletin (TBl1501l) summarizing the conclusions and recommendations. We will notify all customers, both domestic and foreign, by August 7th 2015. I have attached a copy of this Technical Bulletin for your reference.
If you have any questions or concerns, please direct them to Quincy Hill, Quality Manager at ohill*,ldancon.com.
Thank you.
Sincerely, Kevin Sutherby Vice President & General Manager Navaco Controls Division of Dynapar Corporation ksutherby(,dancon. corn 91I0.862.5411 (office) 2l00 West Broad Street- Elizabethiown.. NC 28337 800.390.6405 803060
Jul. 31. 2615 2:28PM No, 5947 P.,
Dynapar Corporation CUSTOMER NAME FACILITY NAME PRODUCT ID QTY. ADDRESS EAI8O-12302 2 EA180-l1302 738NRHSAEHY9 ALABAMA POWER CO PARLEY NUCLEAR PLANT EAI7O-32302 2 - COLUMBIATH TALE36319 EA1S0-11302 4 EA170-11302 1 ______________
AMEREN GENERATION CALLAWAY ENERGY EAI7O-32302 1 JCT HWY CC AND HWY O CO CENTER EA17O-3 1302 1 FULTON, MO 6,5251 ARIZONA PUBLIC PALO VERDE NUCLEAR 5801 SOUTH WINTERSBURG SERVICE N' GENERATION STATION EAI8O-21302 I ROAD TONOPAH, AZ 86354 DETROIT EDISON FERMI 2 NUCLEAR 6400 N. DIXIE HWY COMPANY POWER PLANT EA1SO-31402 2 NEWPORT, MI 48166 DOMINION NUCLEAR MILLSTONE EAI80-31302 5 ROPE FERRY RD (RTE 156)
CONNECTICUT NUCLEAR PWR STA EAIS0-11302 i WATERFORD, CT 06355 DOMINION VIRGINIA NORTH ANNA 1022 HALEY DRIVE POWER POWER STATION EAI8O-32302 1MINERALI VA 23117 DRESSER - 85 BODWELL STREET MAS.ONEILAN DIV EA1 80-1 2402 2 AVON, MA 02322 CATAWBA EIO302 24800 CONCORD ROAD DUKE ENERGY NUCLEAR STATION EA17C-32302 9 YORK, SC 29745 CAROLINA LLC ____________ EA1BO-31302 4 ______________
MCGUIRE EAI8O-11302 4 13225 HAGERS FERRY RD. HWY NUCLEAR STATION EAIAO-12302 1 73 HUNTERSVlLLE, NC 28078 EA180-11302 1 EAI8O-32302 2 ROBINSON E,,I,1O-32302 1 3581 W. ENTRANCE RD.
DUKE ENERGY NUCLEAR PLANT EA180-1 2302 5 HARSTVILLE, SC 29550 PROGRESS, INC. EAI80-11302 4
____________________ EA1SO-31302 2 _ _____________
EA170-12302 1 5413 SHEARON HARRIS RD.,
HARI UCEA LAT EAI8O-31302 3 NEW HILL, NO 27562 EMERSON PROCESS EA1 80-32302 2 19200 NW. FREEW*AY MANAGEMENT EA18O-31302 4 HOUSTON, TX 77065 COLUMBIA76 NORTH POWERPLANT LOOP ENERGY NORTHWEST GENERATION STATION EA180-32402 IRICHLAND, WA 99354 SOUTH OF JCT HWY 64W AND ARKANSAS NUCLEAR ONE EAI8O-31302 2 333SREUSSELLVILLE, AR 72802 RIVER BEND EA1 80-31 302 1 6485 US HwY 61 ST.
ENTERGY ACCOUNTS NUCLEAR STATION EA1SU-31302 5 FRANCZSVILLE, LA 70775 PAYABLE DEPT _A180-12302 WAEROR 3NU(*LER EA17O-31302 2 17265.RIVER RD. HWY 18 WAEFOD3 dLER EAI7O-4.2302 2 HAHNVILLE, LA 70057
___________________ ____ ___ ___ ____ ___ ___ EA1 70.41302 1 _______________
/
800.390.6405
Jul1,31. 2015 2:28PM No, 5947 P.4 Dynanar Corporation 1 1 r I EAI 80-31302 .7 EA1 80-31302 4 EXELON BUSINESS CLI NTON 8401 POWER ROAD SERVICES NUCLEAR STATION EA1 80-31302 5 CLINTON, IL 61727 EA170-51302 6 LASALLE COUNTY EA180-22302 4 2601 N. 21ST RD.
GENERATING STATION EAl170-51302 2 MARSEILLES, IL81341 BRAIDWOOD EI-302 IEAST OF IL RT 53 GENERATING STATION EA1BO-32302 S RIWOI 00
_____________________ EA1850-323 02 1 _ ______________
EXELON GENERATION LIMERICK 3146 SANATOGA ROAD CO.; LLC GENERATING STATION EAl 70-51 302 2 POTTSTOWN, PA 19464 BYRON _EA18O-12302 3 4450 N. GERMAN CHURCH RD.
GENERATING STATION EAI8O-32302 1 BYRON, IL 61010 QUAD CITIES 22710 206TH AVE N.
GENERATING STATION .4 fflIIlfl\VA II RI9t9 FAI RA-91iar2 FIRSTENERGY CORP, EAI80-31302 10 10 CENTER ROAD PERRY NUCLEAR PLANT EA1 80-31302 NORTH PERRY. OH 44081 4 ~ -~ ......... T . ... . --
EA17 0-32302 EAI180-32309 2 EA170-31302 5 EA1 80-3 1309 2 EA1 80-3 1302 2 EA17O-32302- 5 EA1 70-31 302 5 EAI170-32302 4 EM180-32309 2 1900 S. SOUNDERS ST.
FLOWSERVE US INC EA17O-31302 RALEIGH, NC 27603 4
EA1 80-31309 2 EA180-32309 2 EAI8O-31309 2 EAI180-1 2309 12 EA18O-1 1309 12 EA1 80-1 2302 1 EA1 70-32302 3 EAI170-31302 3 2A180-31302 6 7821 RIVER ROAD EA1 80-1 2302 2 WAYNESBORO, GA 30830 GEORGIA POWER PLANT HATCH EA180-31302 6
~11028ECIMPANY2 HATCH PARKWAY
___________EAI7O-32302 2 NORTH BAXLEY, GA 31513 INDIANA MICHIGAN COOK NUCLEAR PLANT EAI170-31 302 4 9970 RED ARROW HIGHWAY POWER CO __________ EA1BO-11302 3 - BRIDGMAN, MI 49106 NEBRASKA PUBLIC COOPER 72676 648A AVE, POWER DISTRICT NUCLEAR STATION EAI8O-32402 8 BROWNSVILLE, NE 66321 2100 West Broad Street- Eliza'bethtown, NC 28337 09.65 800.390.6405
Jul,.31. 2Q15 2:28PM No. 5947 P.5 Dvrnapar Cor~oration 626 LAFAYETTE ROAD SEABROOK STATION EA1 70-11302 1 SEABROOK, NH 03874 DUANE ARNOLD 3277 DALEC ROAD NEXTERA ENERGY ENERGY CENTER EAISO-31402 1 PALO, IA 52324 PENTAIR VALVES & 65 CABOT BOULEVARD CONTROLS 2,4180-32309 88 MANSFIELD, MA 02045 EA18O-31402 5 EA18O-12302 1 EA180-11302 3 PBISEVCELC SALEMIHOPE CREEK( 2,180-32302 4~- ALLOWAY CREEK NECK ROAD ANDLI GSERNCPEGE NUCLEAR GENERATION 2A180-t2402 1 HANCOCKS BRIDGE, NJ 08038 AN ASNPSGSTATION EAI8O-1 1402 1 EA4180-32402 3 EAI80-31402 3 EA18O-12402 2
_____________EAISO-1.1402 2 SPX FLOW EA1 70-32302 2,52WETRA TECHNOLOGY 5620KEST, ROAD12 SYSTEMS, INC. EA4170-31302 2MKAP 62 SOUTH TEXAS NUCLEAR STP NUCLE.AR PROJECT EAI80-31302 14 12090 FM 521 OPERATING CO. ELECTRIC GENERATING -- WADSWORT, TX 77483 STATION EA18O-21302 1 EA1 70-1 2302 1 TENNESSEE VALLEY WATTS BAR EA180-22302 1 HWY 68, FSB-IG
,AUTHORITY NUCLEAR PLANT EAI80-11302 2 SPRING CITY, TN 37381 EA1 80-1 2302 3 WEIR VALVES & EA180-22302 1 29 OLD RIGHT ROAD CONTROLS "EAI8O-21302 i IPSWICH, MA 01938 WOLF CREEK NUCLEAR WOLF CREEK NUCLEAR15,OELAE..
OPR CORP OPERATING CORPORATION EA180-113032 5 BRINGTOXN, LAN N.E.
__________________EA18O-1 2302 2 BRIGOK 63
~1 EM180-12302 7 1717 WAKONADE DRIVE EAST XCEL ENERGY PRAIRIE ISLAND NUCLEAR EA1 80.31 302 4 WELCH, MN 55089 EA1T70-12302 4 2100 West Broad Street *Elizabeth~tow'n: NC 28337 800.,*90,6405 8039.40
Jul. 31. 2015 2:29PM N'o, 594? P, 6 Dynapar Corporation
- JULY 2015 TECHNICAL BULLETIN TBI 501 NOTIFICATION OF POSSIBLE OPERATIONAL ANOMALIES FOR NUCLEAR QUALIFIED EAI 7011S0 STANDARD LIMIT SWITCHES PURPOSE:
The purpose of this Notice is to inform Nuclear Power Plant Operators and others involved in the operation and maintenance of Nanco Controls EAt 80 and EA1 70 Standard Series Nuclear Qualified Limit Switches (with a spring returned operating lever) that when the switches are used in a normally actuated state or are exposed to a temperature above 123VF, a potential anomaly may occur.
DESCRIPTION:
During operation of MSIV valves, at the Cooper Nuclear Power Station - a Nebraska Public Power District (NPPD) operated facility located in Brownsville, Nebraska, three (3) Namco EAISO-32402 Limit Switches failed to function properly in a 1730 F maximum field temperature.
It was found, after actuating the switch, the normally closed contacts did not consistently return to their initial position which could result in an incorrect signal on the position of the valve being monitored.
NAMCO CONTROLS INVESTIGATION:
A comprehensive Program of Engineering/Quality Assurance Studies, Laboratory Analysis, and Testing were performed on the subject Namco Controls' Limit Switcl. These studies and analyses determined that a single lot of 1100 springs, that may have been inadequately stress relieved, were shipped inside EAI80 and FAI7O limit switches to nuclear customers. The switches in question were manufactured between March 25"' 20i4 and December 3 0m 2014 and may contain inadequately stress-relieved return springs (See the part numbers at the end of this Technical Bulletin).
Although the laboratory analysis shows that the material is conforming,, the analysis of the returned springs from NPPD displayed the return springs' corresponding forces were below the Namco Controls drawing force specifications. Itwas further determined that the inadequate stress relief was the cause of the decreased return spring force in these units.
Engineering reviewed samples of return springs from seven additional lots. The ehgineering review determined that the corresponding forces of the spring lot in question were varied and out of specification when exposed to heat. No issues were found in the seven additional lots tested.
2100 West Broad Street' Elizabethtown, NC 28337 800.390,6405 803060
JuL 31. 2615.2:29PM N05947 P. 7 Dynanar Corporation POTENTIAL RISK:
Because of this anomaly the nuclear limit switch may not reliably state the condition of the device (in this case a main steam isolation valve) that the switch is measuring and could be a potential safety hazard depending on the nuclear power plant control logic.
CONCLUSION:
Based on the Engineering review, it has been determined that switches used in a normally actuated .state or exposed to a temperature above 123 0 F may fail to function properly due to decreased spring forcer which is caused by inadequate stress relief.
Namco Controls has changed the Inspection Criteria for this item as of 07131/2015 to prevent further occurrences.
RECOMMENDATION:
For customers who have EA1 80 and EAI 70 switches that were shipped between March 25th 2014 and December 30th 2014:
Namoo Controls recommends that all standard EAI80 Nuclear Qualified Limit Switches be reworked with a new spring to replace the potentially defective spring.
Namoo Controls recommends standard EAI7O Series Nuclear Qualified Limit Switches which are operated in a normally actuated state or are exposed to a temperature above 1 236 F be reworked with a new spring to replace the potentially defective spring.
2100 West Broad Street
- Elizabethtown, NC 28337 803050 800.390.6405
.- JuL, 31. 2Q15... 2:29PM No, 5947 P.8 Dynapar Corporation PART NUMBERS IMPACTED:
PART NUMBERS IMPACTED EA1 70-11302 EA1 70-12302 EA17O-21 302 LA17O-31302 EA1 70-323 02 RAl170-41302 EAl170-42302 EAI170-51302 2A180-11302 EA1 80-11307 EA180-i11309 EA180-i11402 EM180-12302 EA1 80-1 2307 2A180-12309
_..1 80-12402 EAI180-21302 EA1 80-21309
£A1 80-2 1402 EA180-22302 EA1 80-223 09 EA1 80-31302 FA180-31309
£41850-31402 EAI8O-32302 EAI8O-32309 EAI 80-32402 2100 West Broad Street- Elizabethtown, NC 28337 803060 800,390,6405