ML16188A374
| ML16188A374 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Hatch, Dresden, Peach Bottom, Browns Ferry, Perry, Harris, Grand Gulf, Sequoyah, Pilgrim, Arkansas Nuclear, Brunswick, Limerick, South Texas, Quad Cities  |
| Issue date: | 06/30/2016 |
| From: | Wright C Curtiss-Wright Flow Control Corp |
| To: | Office of Nuclear Reactor Regulation, NRC Region 1 |
| References | |
| 52055, NID 16310 | |
| Download: ML16188A374 (5) | |
Text
0613012016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 52055 Rep Org: CURTISS WRIGHT Notification Date I Time: 06/30/2016 16:52 (EDT)
Supplier: TARGET ROCK, CURTISS-WRIGHT FLOW CO Event Date I Time: 05/02/2016 (EDT)
Last Modification: 06/30/2016 Region: 1 Docket#:
City: FARMINGDALE Agreement State: Yes County: License #:
State: NY NRC Notified by: JOHN DEBONIS Notifications: HAROLD GRAY R1DO HQ Ops Officer: JEFF HERRERA OMAR LOPEZ R2DO Emergency Class: NON EMERGENCY MICHAEL KUNOWSKI R3DO 10 CFR Section: THOMAS HIPSCHMAN R4DO 21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE PART 21/50.55 REACTORS EMAIL PART 21 - INADEQUATE SWAGING AND ADHERENCE OF SILICONE 0-RING AND SILICONE PAD IN SOFT.
SEAT MAIN DISC AND PILOT DISC ASSEMBLIES The following is a summary of the information from the email provided:
"[The] soft seat main disc and pilot disc assemblies are installed in certain process solenoid operated valves, some of which perform safety related functions such as containment isolation. These designs include a soft seat insert in the main and/or pilot disc that could loosen and potentially result in excessive leakage or failure of the valve to operate properly.
"Supplier:
Target Rock, Business Unit of Curtiss-Wright Flow Control Corporation 1966E Broadhollow Road, East Farmingdale, NY 11735 "Should you have any questions regarding this matter, please contact Michael Cinque, General Manager at (631) 293-3800.
"Plant Site Locations:
Arkansas Nuclear One, Grand Gulf, Peach Bottom, Sequoyah, Browns Ferry, Hatch, Perry, Shearon Harris, Brunswick, Limerick, Pilgrim, South Texas, Dresden, Millstone, Quad Cities, Susquehanna, Duane Arnold, Nine Mile Point, River Bend, Three Mile Island, Fermi, Palo Verde, Saint Lucie, Watts Bar."
Valve Group - Target Rock CURTISS-- Industrial Division WRIGHT 1966E Broadhollow Road E Farmingdale, NY 11735, USA T: +1.631.293.3800 I F: +1.631.293.4949 www.cw-industrial.com NID#16310 June 30, 2016 Attn: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-001
Subject:
10 CFR Part 21 Report Notification of a Defect, Inadequate Swaging and Adherence of Silicone C-ring and Silicone Pad in Soft Seat Main Disc and Pilot Disc Assemblies
Dear Sir or Madam:
This letter provides notification of a defect in soft seated main disc and pilot disc assemblies provided in valves and as spare parts supplied by Target Rock (TR).
(i) Name and address of the individual or individuals informing the Commission.
John DeBonis Director of Quality Assurance (Acting)
Michael Cinque General Manager Target Rock, Business Unit of Curtiss-Wright Flow Control Corporation 1966E Broadhollow Road ,
East Farmingdale, NY 11735 (ii) Identification of the basic component supplied for such facility or such activity within the United States which may fail to comply or contains a potential defect.
See Attachment (1) for the identification of main disc and pilot disc assembly part numbers.
Valve model numbers which contain the main disc or pilot disc assembly part numbers are also included therein.
(iii) Identification of the firm supplying* the basic component which fails to comply or contains a defect.
Target Rock, Business Unit of Curtiss-Wright Flow Control Corporation 1966E Broadhollow Road East Farmingdale, NY 11735 (iv) Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
Soft seat main disc and pilot disc assemblies are installed in certain process solenoid operated valves, some of which perform safety related functions such as containment isolation. These designs include a soft seat insert in the main and/or pilot disc that could loosen and potentially result in excessive leakage or failure of the valve to operate properly. -- *- /..
NID# 16310 Page 2 (v) The date on which the information of such defect or failure to comply was obtained.
On May 2, 2016, EDF Sizewell B notified TR that valve disassembly, performed as part of a root cause investigation of failure of a local leak rate test, identified a soft seat insert had loosened in the main disc assembly and a silicone pad had become partially dislodged in the pilot disc assembly.
(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for, being supplied for, or may be supplied
- for, manufactured, or being manufactured for one or more facilities or activities subject to the regulations in this part.
The plant site locations identified in attachment (1) were supplied with valves or spare parts containing these and similar soft seat main disc or pilot disc assemblies.
(vii) The corrective action which has been, is being, or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action.
Upon Sizewell B notification, TR reviewed inventory of the main disc and pilot disc assemblies.
TR confirmed main disc assemblies from stock had a similar defect to that reported by Sizewell B, inadequate swaging, insufficient sealant and/or sharp pilot seat. The non-conforming main disc assemblies were removed from stock. All pilot disc assemblies from stock were inspected and found to be acceptable. However, some stock/un-installed silicone pads were found to be miss-shaped ori the outside diameter. This condition may cause the pad to become partially dislodged from the pilot disc assembly's swaged construction. This condition can worsen when used in conjunction with a main disc assembly containing a sharp pilot seat.
TR investigated Work in Process,. witnessing operations required to fabricate the main disc assembly, and identified inconsistencies between the manufacturing method and the requirements of the disc detail design drawing. TR also identified excessive wear of the assembly tooling.
TR has revised the operations traveler for the component, providing additional clarity to the technician and adding enhanced inspection requirements for the main disc assembly and for the assembly tooling. In addition, all existing tooling was inspected and replaced as required.
Several new main disc assemblies were processed in accordance with the revised operations traveler and new tooling under Engineering, Assembly & Test, and Quality Control, supervision.
The disc assemblies yielded results in accordance with TR's design requirements.
TR has also performed cycle tests ranging from 1,200 to 12,000 cycles on five main disc assemblies having varying degrees of incomplete swaging, insufficient sealant and sharpness of the pilot seat in an attempt to replicate worst case assembly. Two pilot disc assemblies were used for the five test runs. The five main disc and two pilot disc assemblies passed all operational and leak tests. Testing did not create any loosened soft seat inserts in the main disc assembly or any loosened or damaged pads in the pilot disc assembly.
(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licensees.
All un-installed parts should be returned to TR for re-inspection.
Any installed valves containing these parts should be reviewed and evaluated for history of leakage or operational testing anomalies. Many of these installed valves are subject to regular plant testing, such as 10CFR50 Appendix J. Good performance in this testing can provide reasonable assurance of an acceptable disc condition. Disc assembly condition can also be verified by inspection of the valve internals.
NID#16310 Page 3 (ix) In the case of an early site permit, the entities to whom an _early site permit was transferred.
Not applicable.
Should you have any questions regarding this matter, please contact Michael Cinque, General Manager at (631) 293-3800 Very Truly Yours, 6!:'27 General Manager Target Rock, Business Unit of Curtiss-Wright Flow Control Corporation cc: James White John DeBonis Steve Pauly Ed Bradshaw Nick Campanelli Joseph Simonetti Attachment( s):
- 1. Attachment 1: List of Locations, Models, Main & Pilot Discs
NID# 16310 Page4 Attachment # 1 Plant Site Locations ARKANSAS NUCLEAR ONE GRAND GULF PEACH BOTTOM SEQUOYAH BROWNS' FERRY HATCH PERRY SHEARON HARRIS BRUNSWICK LIMERICK PILGRIM SOUTH TEXAS DRESDEN MILLSTONE QUAD CITIES SUSQUEHANNA DUANE ARNOLD NINE MILE POINT RIVER BEND THREE MILE ISLAND FERMI PALO VERDE SAINT LUCIE WATTS BAR NOTE: Plants not subject to NRC regulation will be notified via separate correspondence Valve Model Numbers 05A-005 75KK-213 76P-042 79BB-002 83AB.:.002 89K-010BB 05A-006 75KK-214 77GG-002 79Q-014BB 83AG-001 97BB-001 05A-007 75KK-216 77GG-007 79QQ-008 83AP-002 97BB-002 05A-008 76HH-001BB 77GG-008 79TT-001 83AU-001 98Z503-001 05Z541-001 76HH-007 77GG-010 80F-001 83AU-002 98Z503-002 07Z510-001 76HH-007BB 77GG-011 80N-001 83TT-001 07Z535-001 76HH-011 77J-001BB 80Z-14-009 84DD-004BB 12D-001 76HH-012 77J-001-SQN-1 81CC-201 84U-001 72V-001 76HH-013 77JJ-002 81K-001 85U-001 72V-002 76HH-013-1 77JJ-004 81MM-002 85U-003 72V-003 76HH-021 77KK-002 81MM-005 85U-005 73AA-001 76HH-023 77KK-003 81P-006. 85U-006 73FF-005 76L-001-3 77KK-004 82EE-001 85U-007 75E-001 76P-001 77KK-005 82MM-002-1 86Z545-001 BB 75E-002 76P-002 77KK-006 82PP-001 87K-001 75F-005 76P-026 77KK-011 82R-002 89K-003 75F-008 76P-031 78E-008 82R-003 89K-003BB 75F-010 76P-035 79AB-009 82W-003BB 89K-004 75KK-211 76P-036 79B-014 82W-004BB 89K-004BB 75KK-212 76P-037 79BB-001 83AB-001 89K-010 Main Disc Assembly Part Numbers 102271-1 102271-1 202337-4 303200-1 I 100721-1 200391-1 203247-1 304051-1 I 100875-1 200425-1 204540-1 100875-1 202336-1 204729-1 100960-1 202337-1 300953-1 Pilot Disc Assembly Part Numbers 100663-1 102231-1 102231-1 203054-1