ML14213A010

Notification of Potential Part 21 Report - Defects on 2 Inch Bonnets

ML14213A010
Person / Time
Site:	Comanche Peak, 99900061
Issue date:	07/28/2014
From:	Andrewsky C, Apostolescu V Velan
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
50284, 8943-014
Download: ML14213A010 (4)

Text

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07/28/2014 U.S. Nuclear Regulatory Commission OperationsCenterEvet Repeo p I Part 21 (PAR) Event # 50284 Rep Org: VELAN INC. Notification Date / Time: 07/18/2014 08:28 (EDT)

Supplier: VELAN INC. Event Date I Time: 07/17/2014 (EDT)

Last Modification: 07/28/2014 Region: Docket #:

City: MONTREAL, CANADA Agreement State: No County: License #:

State:

NRC Notified by: VICTOR APOSTOLESCU Notifications: THOMAS FARNHOLTZ R4DO HQ Ops Officer: VINCE KLCO PART 21 GROUP EMAIL Emergency Class: NON EMERGENCY 10 CFR Section:

21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE PART 21 REPORT - NOTIFICATION OF DEFECTS ON 2 INCH BONNETS The following information was received from Velan Inc by facsimile:

"SUBJECT NOTIFICATION: 2 INCH BONNETS, VELAN PART NUMBER 8943-014 "On May 16, 2014 [Velan] received notification from Westinghouse Electric Co. (WES) that 2 bonnets supplied by Velan to WES in early 2013 for installation at Comanche Peak exhibited the following issues:

- The bonnets were intended to be exact replacements for the bonnets built to drawing E73-020 Rev E (OEM is Velan) except for material change to SA-182 FXM-19. Bonnets were visually inspected when received at site. No issues were noted; both bonnets appeared to be identical.

- In April 2013, Unit 1 bonnet was installed in valve 1-8109. No issues were noted with the installation. The new bonnet was put into service.

-In April 2014, Unit 2 installation was scheduled to begin. After the disassembly of the valve, the old and new bonnets were compared. It was noted that the backseat dimensions are different between the 2 bonnets. The increase in backseat diameter on the new bonnet would cause the stem to not backseat. The decision was made to re-install the old bonnet and send the new bonnet back to the OEM, Velan.

"On June 10, 2014 the bonnet, identified in the last bullet above, arrived at Velan Plant 2.

"The review by the [Velan] Evaluation Committee was finalized on July 17 and concluded that:

-Four similar bonnets were delivered to WES on three different occasions in 1988 and early 90's

-The stem head diameter is 01.312 [inches] so, when opening, the stem may pass through the stem bore of the bonnet and not seat on the backseat.

-On opening, if the limit switches on the actuator do not function, the stem may enter the packing chamber. The

"-_I

@77/W8/W714 US. NuclearRegulatory Commission OperationsCenter Event Report Page2 packing may be deformed and a leak may develop. Stem travel is limited by the disc contacting the bonnet and/or the end of the stem thread stopping on the actuator drive nut.

-If the actuator and packing flange nuts are removed, there is the potential for the stem to blow out of the valve.

-The packing chamber depth will result in more packing being installed in the valve. This may result in a higher packing friction load on the actuator when operating and reduce the actuator margin.

-The smaller packing chamber will not affect safety. A different diameter packing may be required. The gland bushing diameter (01.744 inches) is less than the packing chamber diameter and will work correctly.

"These bonnets were fabricated against ASME Sec. III for installation in Class 2 systems. Not knowing exactly the nature of the application we cannot determine if the [above identified] potential issues may pose a significant safety hazard and therefore we have informed WES by way of a similar letter."

• *

• UPDATE PROVIDED FROM VICTOR APOSTOLESCU TO JEFF ROTTON AT 1435 EDT ON 07/28/2014 ***

Reporting Organization/Supplier who made the original event report on 07/18/2014 reported to the NRC Operations Center that the Event Notification posted has a typographical error regarding the Velan, Inc part number described in the report. The original documentation provided was concerning Velan Part Number 8943-014 which was mistakenly transcribed as 6943-014 in the original report. This error has been corrected in this updated report.

Notified R4DO (Okeefe) and Part 21 Group via email.

" JUL.' 18. 2014 8:28AM VELAN INC 514:342-2311 N9767 P. 1 V VEL&N 550 McArthur, Wile St-Laurent Quebec, Canada H4T 1X8 DATE; July 18, 2014 PAGE: 1 of 2 FROM: Cathy Andrewsky FAX: (301) 816-5151 PHONE: (514) 748-7748 ext 2203 TO: U.S. Nuclear Regulatory Commission FAX: (514) 342-2311 ATTN.: Document Control Desk

SUBJECT:

Notification 2 inch bonnets, Velan Part Number 8943-014 Gentlemen, Please see attached notification from Victor Apostolescu.

Regards, Cathy Andrewsky Vdlo Inf= Velan Valve Corporation 7700 Cote de Liesse CERTIFIED TO ISO 9001 18 Avenue "C" Montreal Quebec QUALM STANDARDS GriswoldIndustrialPark CANADA H4T 1G2 Williston, Vermont US.A- 05495-9798

0 JtL,18.2014 8:28AM VELAN INC 514-342-2311 N2 767 P. 2

,AN Velan Inc.

Plant 550 MoArthur Street, Montreal, QC H4T IX8 Canada vr a Tel: +1 514 748 7743 Fax: ÷ 514 341 3032 www.velan.com July 18, 2014 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555-0001 Aftention: Document Control Desk, via fax 301-816-5151

Subject:

NOTIFICATION 2 INCH BONNETS, VELAN PART NUMBER 8943-014 Gentlemen, On May 16 2014 we received notification from Westinghouse Electric Co. (WEB) that 2 bonnets supplied by Velan to WES in ealry 2013 for installation at Comanche Peak exhibited the following issues:

• The bonnets were intended to be exact replacements for the bonnets (item 2) built to drawing E73-020 Rev E (OEM is Velan) except for material change to SA-182 FXM-19. Bonnets were visually inspected when received at site. No issues were noted; both bonnets appeared to be identical.

a In April 2013, unit 1 bonnet was installed in valve 1-8109. No issues were noted with the installation. The new bonnet was put into service.

• In April 2014, Unit 2 installation was scheduled to begin. After the disassembly of the valve, the old and new bonnets were compared. It was noted that the backseat dimensions are different between the 2 bonnets.

The increase in backseat diameter on the new bonnet would cause the stem to not bacloseat. The decision was made to re-install the old bonnet and send the new bonnet back to the OEM, Velan.

On June 10, 2014 the bonnet identified in the last bullet above arrived at Velan Plant 2.

The review by the Evaluation Committee was finalized on July 17 and concluded that:

- Four similar bonnets were delivered to WES on three different occasions in 1988 and early 90's

- The stem head diameter is 01.312 so, when open.no the stem may pess through the stem bo-ore of the bonnet and not s$ on the backseat.

- On onning.,if the limit switcheson theactuetor do not f(cncton. the stem ma e-nter the panckng chamber. The packiny may be deformed and a leakmayv develop- Stem travelis limited by the disrtcontactin) the &onnetand/or the end of the stem threadstonninRojltheactuatordrive nut.

- If the actuatorandpackino flange nuts are removed, there is the potenI altfo the stem to blow out of the valve.

- The packlng chamber depth wJillruitin more packing being installed in hMevae This may result in a hiaher neckinq friction load on the actuatorwben oep0!tinVrri and reduce the actuatormarnin.

- The smaller packing chamber will not affect safety. A different diameter packing may be required. The gland bushing diameter (01.744") is less than the packing chamber diameter and will work correctly.

These bonnets were fabricated against ASME Sec. III for installation in Class 2 systems. Not knowing exactly the nature of the application we cannot determine if the potential issues in italics and underlined above may pose a significant safety hazard and therefore we have informed WES by way of a similar letter.

For any additional information on this matter please contact me at 514-748-7748 x 2134 or at victor.apotolescu@velan.com.

Sincerely yours, Velan Inc.

Victor Apostolescu, Eng.

Vice President Quality Assurance cc: Velan - T. Velan, I. Velan, G. Perez, Z. Palko Velan. Ouality that lasts.