ML110840037

Notification of Potential Part 21 Report Concerning Valve Plunger Guide Malfunction

ML110840037
Person / Time
Site:	Limerick, Farley
Issue date:	03/23/2011
From:	Kenneth Armstrong Automatic Valve
To:	Office of Nuclear Reactor Regulation
References
Download: ML110840037 (5)

Text

0312312011 U.S. Nuclear Regulatory Commission Operations Center Event Report PagLI Part 21 (PAR)Event# 46692 Rep Org: AUTOMATIC VALVE Notification Date / Time: 03/23/2011 16:24 (EDT)Supplier:

AUTOMATIC VALVE Event Date / Time: 03/22/2011 (EDT)Last Modification:

03/23/2011 Region: 3 Docket #: City: NOVI Agreement State: No County: License #: State: MI NRC Notified by: KEVIN ARMSTRONG Notifications:

JOHN ROGGE R1 DO HQ Ops Officer: PETE SNYDER DANIEL RICH R2DO Emergency Class: NON EMERGENCY PART 21 GROUP EMAIL 10 CFR Section: 21.21 UNSPECIFIED PARAGRAPH VALVE PLUNGER GUIDE MALFUNCTION"Initial Concern: Valve, serial number 73386, does not consistently return to the closed position.""Nature of the Defect: A dent in the plunger guide may prevent the valve from changing state."Number and Location of Components: "Model: U0204GBBR-AA Quantity:

32"Model: U0204GBBR-DEEL Quantity:

3("Model: U0204GBBR-DE Quantity:

4"Model: U0204FBBR-DE Quantity:

8"Model: U0204GBBR-DEL Quantity:

4"Model: U0204GBBR-DEP Quantity:

3 Customer:

EXELON LIMERICK, 0 Customer:

ALABAMA POWER FARLEY Customer:

ALABAMA POWER FARLEY Customer:

RALPH A. HILLER Customer:

DRESSER MASONEILAN Customer:

DRESSER MASONEILAN"Advice to Purchasers: "Any of the valves identified above may be inspected by removing the coil and checking the plunger guide for any defects. A dent which will prevent plunger movement is noticeable without magnification.

It typically occurs approximately 0.10 inches from the base of the valve. Any valves thought to contain defects will be rebuilt or replaced by Automatic Valve." 6(9 Received at: 03/23/2011 16:53 MAR/23/2011/WED 04:53 PM AUTOMATIC VALVE CORP FAX No. 12484746732 P. 001 NRC Operations Center 301-816-5151 (FAX)10 CFR PART 21 Notification:

Automatic Valve Company 41444 Vincenti Court, Novi MI 48375 Contact: Kevin Armstrong, President, 248-474-6700 ext. 170 Basic Component Model Numbers: U0204GBBR-AA, U0204GBBR-DEEL, U0204GBBR-DE, U0204FBBR-DE, U0204GBBR-DEP, U0204GBBR-DEL, Nature of the Defect: A dent in the plunger guide may prevent the valve from changing state.Number and Location of Components:

Valve Model-U0204GBBR-AA U0204GBBR-DEEL

-,-U0204GBBR-DE

--U0204FBBR-DE cU0204GBBR-DEL-U0204GBBR-DEP Quantitjy 32 30 4 8 4 3 Customer EXELON LIMERICK ALABAMA POWER FARLEY ALABAMA POWER FARLEY RALPH A. HILLER DRESSER MASONEILAN DRESSER MASONEILAN Corrective Action to Be Taken: Please see attached report.Advice to Purchasers:

Any of the valves identified above may be inspected by removing the coil and checking the plunger guide for any defects. A dent which will prevent plunger movement is noticeable without magnification.

It typically occurs approximately 0.10 inches from the base of the valve. Any valves thought to contain defects will be rebuilt or replaced by Automatic Valve.Date the Evaluation of the Defect was Complete:

03/2212011 MAR/23/201i!WED 04:53 PM AUTOMATIC VALVE CORP FAX No, 12484746732 P. 002 AUTOMATIC VALVE NUMBER: D7174-003 Page 1 of 3 TITLE: CORRECTIVE ACTION LOCN: h:\WORD\DOCUMENT\D7174003.DOC DATE: 10-21-1999 SUBJ: CORRECTIVE ACTION TYPE: FORM DEPT RESP: DQA REV: F-CN8020 REQUIREMENTS:

NUMBER: 522 Type of Problem: Part U0204GBBR-AA Procedure Date: 03-14-2011 Who found Problem: Supplier Distributor rI-Customer Company: Exelon Limerick Station Contact Name: Kevin Borek Address: 3146 Sanatoga Rd. Pottstown PA kevinborek@exeloncorp.com

1. Team Working on Problem: Leader: Tom Troy Members: Brian Blelat. Kelly Morris, Kevin Armstrong 2. Describe Problem (initial Concern and.Symptoms):.

Valve, serial number 73386, does not consistently return to the closed position.Contain Symptom (Action): Return rebuilt unit to the customer.

Notify affected customers of the problem and inspection required.

See Illustration 1 and Photograph 1.Approved by: .Title: President Date: c-!. g -!.* //4. Root Causeis of Problem: 1D CFR Part 21 Report Required:

YES U0204GBBR-AA is a valve constructed with 3/8 inch NPT adaptors inserted into % Inch NPTF ports.The adaptors are installed after the basic unit is built andtested.

The adaptors are then leak checked;.but the valve Is not functionally re-tested after the Installation of the adaptor.The solenoid plunger guide was accidentally crimped when the adaptor fitting was installed.

The crimp in the plunger guide may Interfere with the movement of the plunger. If the interference prevents the plunger from completing Its full stroke, the. valve will not return to Its closed position.

If this occurs, the valve will fail to close.The failure was noted when Exelon staff tested the valve, prior to Installation.

Approved by: Title President Date: dg* zs. ,, 5. Corrective Action: Install all fittings in the valve body prior to the Installation of the plunger guide into the body.Approved by: Title: President Date: 6. Implementation:

CN 9780 specifies the assembly order of the fittings into the valve body and plunger guide. This is done prior to assembly of the plunger guide into the body.Approved by: Title: President Date: r.?. //7. Corrective Action to System to .Prevent Recurrence:

Action, as taken, is systematic.

Approved by: Title: President Date: , //B. Verification (Describe):

It was not possible to re-create the dent in the plunger guide.when the fittings were installed prior to assembly of the plunger guide Into the valve body.Approved by7 --Title: President Date: a 3.2 .11//

MAR/23/2011/WED

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