ML16321A450
| ML16321A450 | |
| Person / Time | |
|---|---|
| Site: | Monticello, Davis Besse, Kewaunee, Susquehanna, Brunswick, Ginna, Diablo Canyon  |
| Issue date: | 08/31/2016 |
| From: | Shephard W Flowserve US |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML16321A450 (6) | |
Text
0813112016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR)
Event#
52212 Rep Org: FLOWSERVE Notification Date I Time: 08/31/2016 16:00 (EDT)
Supplier: FLOWSERVE Event Date I Time: 08/31/2016 (EDT)
Last Modification: 08/31/2016 Region: 1 Docket#:
City: RALEIGH Agreement State:
Yes County:
License#:
State: NC NRC Notified by: WADE SHEPHARD Notifications: RAY POWELL R1DO HQ Ops Officer: MARK ABRAMOVITZ JONATHAN BARTLEY R2DO Emergency Class: NON EMERGENCY BILLY DICKSON R3DO 10 CFR Section:
GREG WARNICK R4DO 21.21 (d)(3)(i)
DEFECTS AND NONCOMPLIANCE PART 21/50.55 REACTORS EMAIL PART 21 NOTIFICATION - FLOWSERVE SWING CHECK VALVES The following is an excerpt of the part-21 notification:
"Susquehanna Nuclear reported two size 3 class 900 Anchor Darling swing check valves were not passing LLRT
[local leak rate tests]. After disassembly there appeared to be wear between the hinge arm and seat ring of the valve body apparent on the hinge. The interference was not severe enough to stop hinge arm motion of the disk, but did affect ability of the valve to seal during LLRT."
Affected Serial Numbers: BQ752, BQ753, and B0809 Affected Sites: Ginna, Diablo Canyon, Brunswick, Davis Besse, Kewaunee, Conn Yankee, Monticello, Susquehanna, Framatome, Chin Shan, and Kuosheng Engineering Evaluation 10CFR21 No. 91 POC: Wade Shephard: 919-832-0525
9198313369 August 31 51, 2016 US Nuclear Regulatory Commission Document Control Desk 11545 Rockville Pike Rockville, MD 20852-2746 04:26:50 p.m.
08-31-2016 Flow Control Division Anchor/Darling Valves BWllP Valves Edward Valves Va/tek Control Products Worcester Valves
Subject:
PPL Susquehanna Nuclear - 3" class 900 Swing Check Valve Serial Numbers 80752, BQ753, and 80809 (10CFR21-91)
This is to notify the US Nuclear Regulatory Commission that, in accordance with the provisions of 10CFR Part 21, we have identified a potential issue and are submitting our evaluation of the event.
DESCRIPTION: PPL - Susquehanna Nuclear reported two size 3 class 900 Anchor Darling swing check valves were not passing LLRT. After disassembly there appeared to be wear between the hinge arm and seat ring of the valve body apparent on the hinge. The interference was not severe enough to stop hinge arm motion of the disk, but did affect ability of the valve to seal during LLRT.
SCOPE: Size 3 class 900 Anchor Darling Swing Check valves supplied by Flowserve, as well as spare hinge arms for this valve design. See attached table included with the evaluation for a list of applicable valves and spare hinge arms.
PROPOSED ACTION: Flowserve will revise hinge arm drawing to update the radius/diameter at the location of wear to increase clearance between the hinge and seat ring to avoid recurrence. Flowserve will notify the customers who have been supplied spare hinge arms (noted in the table) of the attached evaluation of the defect and will request that the hinge am1s be returned to Flowserve for evaluation and/or replacement at no charge if they have not been installed, or verification by the customer that there has been no interference issue if the hinge arms are currently in service.
- Please do not hesitate to contact me if you have any questions or require additional information.
Sincerely, p,J#c-.&f.J.(l'.v.J Wade Shephard Engineering Manager Flowserve, Raleigh NC Operations Flowserve US Inc Flow Control Division Raleigh Operations PO Bo~ 1961 1900 South Saunders Street Raleigh, NC 27603 Toll Free:
1-800*225-6989 Phone:
1-919-832-0525 Facsimile: 1-919-831-3369 www.ffowserve.com 1 /5
9198313369 August 31 51, 2016 04:27: 19 p.m.
08-31-2016 Flow Control Division Anchor/Darling Valves BWllP Valves Edward Valves Valtek Control Products Won;ester Valves
SUBJECT:
PPL Susquehanna Nuclear-3" class 900 Swing Check Valve Serial Numbers 80752, BQ753, and 80809 DESCRIPTION: PPL - Susquehanna Nuclear reported two size 3 class 900 Anchor Darling swing check valves were not passing LLRT. After disassembly there appeared to be wear between the hinge arm and seat ring of the valve body apparent on the hinge. The interference was not severe enough to stop hinge arm motion of the disk, but did affect ability of the valve to seal during LLRT.
SCOPE: Size 3 class 900 Anchor Darling swing check valves supplied by Flowserve, as well as spare hinge arms for this valve design. See table below included with the evaluation for a list of applicable valves and spare hinge arms.
ROOT CAUSE: The Size 3 class 900 Anchor Darling swing check valve design has a tolerance stack-up issue wherein it is possible that a heavy cast hinge arm and a seat ring at the upper end of its diameter limit could have an interference through a portion of the hinge arm motion.
This issue does not affect other size or pressure class Anchor Darling swing check valves.
POTENTIAL EFFECT: An interference between the hinge arm and seat ring could affect the ability of the swing check valve to operate freely by gravity through its full stroke and cause the valve to fail seat leakage testing (especially at low pressures).
EVALUATION: Swing check valves normally operate automatically reacting to fluid flow and gravity to travel through its stroke. Normally these check valves swing freely and seal against reverse flow. Interference between the hinge arm and seat ring could impede free movement through the stroke and affect the ability to create a good seal against the body seat. The evaluation will include previously supplied check valves of this design along with spare hinge arm orders to verify order requirements in regards to valve operability, sealing requirements, and safety related function, if any.
CONCLUSION: A full review of previously supplied size 3 class 900 swing check valves has been done including a review of relevant PO and design specification requirements as to valve functionality. The table below shows the subject valve orders, the customer and site, and any relevant details required of the valves supplied to the customers. After the review it has been concluded that the possibility of the condition wherein there is a heavy cast surface on the hinge arm, causing possible interference with the seat ring and impeding the full sealing of the disk would not interfere with a safety related function or violate design specification requirements for any of these orders.
It has been determined that each valve was assembled and tested per relevant ASME code and specification requirements prior to leaving Flowserve's facility, including successfully passing seat leakage requirements of customer PO and/or design specification requirements. Since the valve pressure boundary is not in jeopardy, the valve would open as designed, and the valve Flowserve US Inc Flow Control Division Raleigh Operations PO Bex 1961 1900 South Saunders Street Raleigh, NC 27603 Toll Free:
1-B00*.225-6989 Phone:
1-919-832-0525 Fai:simile: 1-919-1131-3369 www.flowserve.com 2 /5
9198313369 04:27:59p.m.
08-31-2016 would close with reverse flow to stop flow (but possibly not fully isolate in an LLRT situation, which this valve design is not ideal for), meeting code and spec requirements, Flowserve does not view this as a 1 OCFR21 issue for supplied valve assemblies.
For hinges supplied as spare parts, a similar review was performed. Since Flowserve did not install and test each of these hinge arms in the valves in our facility as the components were supplied as spare parts, Flowserve cannot guarantee there would not be interference between the hinge arm and seat ring that would cause a valve to fail to fully open or close as required by design (nor can we say with complete certainty the system into which these arms were installed at the site). While the sites installing these hinge arms should be performing a functional test to open and close the hinge arm assembly after installation into a valve at which time any interference would be visually apparent, Flowserve does not have the individual sites installation procedures and cannot therefore guarantee that a functional check is occurring. It is for this reason that Flowserve's position Is that this is a reportable 1DCFR21 issue in the case of supplied spare hinge arm assemblies for previously supplied size 3 class 900 SVl(ing check valves.
. 41 MIN Flowserve U S Inc Flow Control Division Page 2 of4
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Fi.Ow Raleigh Operations P08ox1961 1900 Soufu Saunders Street Raleigh, NG 27603 Tall Free:
1-BOIJ.225-0989 Phone:
1-919-a32.0525 facsimile: 1-919-a31-3369 www.nawserve.com 3 /5
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5 2
2 4
1 1
5 2
1 1
2 4
2 6
23798/E794T 25745 43717 82611 103569 112699 116438 22525/E720T 47240 60394 62116 69207 90669 E9828 E6871 Flowserve U S Inc Flow Control Division DRAWING W0326084 W8722515 W8722515 12-82611-01 13-103569-01 15-112699-009 12-82611-01 WD226050 W0226050 W0226050 W0226050 03-90669-01 03-90669-01 W8221485 W8722515 CODE CL UTILITY 2
RG&E 2
PG&E 2
PG&E 2
Duke 2
PPL 3
First Energy 2
Duke 1 Less N Dominion 1 Less N Dominion 1 Less N Dominion 1 Less N Dominion 2 Less N TPC-Union Yield 2 Less N TPC-Union Yield 2
TPC 2
. PG&E Raleigh Operations PO Box 1961 1900 South Saunders Street Raleigh, NC 27603 SITE Ginna Diablo Canyon Diab lo Canyon Brunswick SSES Davis Besse Brunswick Kewaunee Kewaunee Kewaunee Kewaunee Chin Shan Chin Shan Kuosheng Diab lo Canyon Delive!Y Design Sgec Aug-'03
- See Note Nov-'03 8179 Rev. 2N Feb-'08 8179 Rev. ZN Mar-'15 248-005 Rev. 8 M-1371 Rl, TSC No.
Feb-'14 13 Dec-'15 M-212Q Rev. 5 Aug-'16 248-005 Rev. 8 KNPP 02-03 Rev. 1 May-08 KNPP 02-03 Rev. 1 Feb-11 KNPP 02-03 Rev. 1 Jul-11 KNPP 02-03 Rev. 1 Feb-13 Ebasco TPC-9891.103S R6 Sep-03 Ebasco TPC-9891.103S R6 Feb-82 9713-M-35 Add 6 Feb-87 8179 Rl Toll Free:
1-800-225-6989 Phone:
1-919-832-0525 FacslmITe: 1-919-831-3369
- 'NIW.floW~!fil'.QJ;Qffi SgecLOrder Reguirements
- No Spec per QAP/DWG/Des. Rpt. (Less NJ.
QAP: Air Test No operating requirements. 5.1.3(a2) specs safety related parts including seat, hinge and 10CFR21 applies.
QAP: Cycle test 3 times - no binding.
Above. QAP: Cycle test 3 times - no binding.
No operational requirements.
Spec 3.1.1, pass full rated flow and automatically close to prevent flow in the reverse direction, close by gravity alone test. 3.1.9.4 Fully open at flow rate specified.
QAP: Stroke 12 times.
No operational requirements.
See Above.
Prevent reverse flow. Request flow data for start, full open.
See Above.
See Above.
See Above.
No operation requirements.
See Above.
Add 7: No operating requirements. 4.12.8-B test for smooth operation.
No operating requirements. 5.1.3{2) specs safety related parts including seat, hinge and 10CFR21 applies.
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1 EA797 W8822862 10CFR21 NSP 1
EB738 W9023386 2
TPC 1
ET836 W9424199 10CFR21 NEU 2
E242A W9725010 2
PPL 2
E242A W9725010 2
PPL 1
E686A W9925212 3
PE526 W8722515 2
PG&E (Wmspt) 1 31722 W9725010 2
PPL 2
49047 W8722515 2
PG&E 1
103266 W9725010 2
PPL Prepared By: Wade Shephard Engineering Manager Flowserve, Raleigh NC Operations Flowserve U S Inc Flow Conlrol Division Paae 4 of4 Raleigh Operations PO Box 1961 1900 South Saunders Street Raleigh, NC 27603 Monticello Kuosheng Conn Yankee SSES SSES Technologies Diablo Canyon SSES Diablo Canyon SSES Aug-88 85-17-3 (816.34 valve)
Jan-91 9713-M-35 Add 7 Feb-94
- 816.34 valve, no spec listed on dwg M-1371, R/O W/SCN Nov-97
- 2, M1546 RO Jan-98 M-1371, R/O W/SCN
Mar-OS 13 Aug-08 8179 Rev. 2N M-1371 Rl, TSC No.
Nov-13 13 Toll Free:
1-800-225-6989 Phone:
1-919-832-0525 Facsimile: 1-919-831-3369 www.flowserve.com R2: Not Available See Above SOI: No spec Spec 3.1.3.3, pass flow with little resistance and prevent any reversal of flow, dose by gravity test.
M1546 not available.
SOI: Stroke 12 times, Air Seat Test.
See Above No operating requirements.
See Above.
See Above.
See Above.
See Above.
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