ML093030454
| ML093030454 | |
| Person / Time | |
|---|---|
| Site: | Salem, Palo Verde, Hope Creek, Pilgrim, Brunswick, Waterford  |
| Issue date: | 10/23/2009 |
| From: | Schofield M Hilti |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Event 45458 | |
| Download: ML093030454 (6) | |
Text
'I 10/23/2009 U.S. Nuclear Regulatory Commission Operations Center Event Report Pa-e I General Information or Other (PAR)
Event#
45458 Rep Org: HILTI INC.
Notification Date / Time: 10/23/2009 14:18 (EDT)
Supplier: HILTI INC.
Event Date / Time: 10/23/2009 (CDT)
Last Modification: 10/23/2009 Region: 4 Docket #:
City: TULSA Agreement State:
Yes County:
License #:
State:
OK NRC Notified by: MARTIN SCHOFIELD Notifications: LAWRENCE DOERFLEIN R1DO HQ Ops Officer: VINCE KLCO JAY HENSON R2DO Emergency Class: NON EMERGENCY NEIL OKEEFE R4DO 10 CFR Section:
JOHN THORP (e-mail)
NRR 21.21 UNSPECIFIED PARAGRAPH
- 0. TABATABAI(e-mail)
NRO POTENTIAL DELIVERY OF NONCONFORMING WASHERS Hilti provided notification of a potential delivery of nonconforming washers supplied with expansion anchors type Hilti Kwik Bolt KB3 SS316, 1/4" and 3/8" diameters, all lengths. Chemical analysis of provided samples showed the nonconforming washers were made of grade SS430Ti stainless steel instead of the specified grade SS316.
Potentially affected utilities or plants are: PSE&G Nuclear; Pilgrim; Brunswick; Arizona Public Service; Waterford 3.
Cl'
Received at:,10/23/2009 15:06 6' 4*&
OCT-23-2009 14:18 FROM:
TO:US NRC P. 1'5 I:
IiEhz;~ I Facsimile Cover Sheet To: U.S. Nuclear Regulatory Commission Company:
Phone:
Fax:
301-816-5151 From: Martin P. Schofield Company: Hilti Inc.
Phone: 918-872-3379 Fax: 918-872-3520 Date:
Pages including this cover page:
10/23/09 5
Comments:
Re: Notification of a 10 CFR Part 21 relevant discovery for Hilti KB3 anchors IMPORTANT NOTICE The information contained in this facsimile transmission is protected by the attorney-client and/or the attorney work product privilege. It is strictly confidential and is intended solely for the use of the recipient identified above. If you are not the intended recipient you are hereby notified that reading, copying, or distributing this transmission is prohibited. The sender has not waived any applicable privilege by sending the accompanying transmission. If you have received this transmission in error, please notify the sender by telephone call, collect, and return this transmission in its entirety by mail. All postage will be reimbursed.
Thank you,
OCT-23-2009 14:18 FROM:
TO:US NRC P.2/5 Hilti, Inc.
5400 South 122d East Avenu1c Tulsa, OK 74146 (918) 252-6000 October 23, 2009 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Re:
Notification of a 10 CFR Part 21 relevant discovery for Hilti KB3 anchors
Subject:
Potential delivery of nonconforming washers supplied with expansion anchors type Hilti Kwik Bolt KB3 SS316, 1/4" and 3/8" diameters, all lengths, which may meet the definition of a "defect" within 10 CFR Part 21.
Products affected by this notification: Stainless steel Hilti Kwik Bolt 3 type KB3 SS316 Item A 282565 KB3 SS316 1/4" x 2 1/4" Lot # 10908397 Item # 282566 KB3 SS316 1/4" x 3 1/4" Lot # 10770600 Lot# 10893786 Item # 282567 K1B3 SS316 3/8" x 3" Lot# 10770517 Item # 282568 KB3 SS316 3/8" x 3 3/4" Lot # 10855730 Lot# 10893787 Lot # 1.0913214 Lot# 10992219 Description of nonconformance:
Hilti was informed by a non nuclear-related customer that stainless steel Kwik Bolt KB3 SS316 3/8" x 3 /" anchors, installed in a waste water treatment facility, showed rust stains on the washers approximately 18 months after installation. Subsequent chemical analysis of provided samples showed these washers were made of Grade SS430Ti stainless steel instead of the specified Grade SS316.
Our internal investigation enabled us to identify all stainless steel washers received for assembly since the stainless steel Grade SS316 KB3 anchor was introduced in 2005. As a result we have identified a specific receipt of nonconforming washers, sizes 1/4" and 3/8", in Notification: Page 1
OCT-23-2009 14:1e FROM:
TO:US NRC P.3/5 f-ilti, Inc, e
5400 South 122d East Avenue Tulsa, OK 74146 (918) 252-6000 the second half of 2007. We have identified all production lot numbers that were potentially affected, and an earliest potential date of delivery to end-user customers of October 1, 2007.
According to our sales records a total of 10 safety-related orders, to 5 facilities, covering a
-total quantity of 1300 anchors, have been placed by our nuclear customers, but none of them with a request for lot traceability. Therefore, we cannot rule out the possibility that some anchors of the affected lots were delivered in the above orders. A list of all potentially affected safety-related purchase orders with customer details is attached.
Analysis of potential concern:
Investigation indicates Grade SS430Ti has significantly lower corrosion resistance compared to Grade SS316, and is generally recommended for mildly corrosive environments.
In addition, when in contact with the SS316 nut, a galvanic cell may develop, resulting in accelerated deterioration of the washer. Depending on the environment, degradation of the washer may occur over time. While our preliminary analysis indicates there is no immediate safety hazard that would result in failure of an anchorage, the potential eventual deterioration of the washer could have two effects identified to-date: (1) reduction or loss of clamping force; and (2) reduction in the bearing surface area resisting the baseplate pulling over the nut.
Loss of clamping force is not expected to affect performance of the anchor itself. However, applications which rely on clamping force to maintain proper function of the attachment should be further evaluated. Since dynamic loading conditions (the most common potential clamping-critical application) are not one of the recommended applications for this anchor, coupled with the affected anchors being relatively small in diameter, clamping-critical applications would not generally be expected.
As to pullover, our preliminary analysis indicates it does not occur with a baseplate of typical thickness and a clearance hole diameter specified in HiIti technical literature.
However, use of a thin baseplate and/or a significantly oversized clearance hole would require further evaluation.
In summary, our preliminary analysis indicates the nonconformance would not, in ordinary and typical application, have any substantial adverse effect on performance of the anchorage.
The potential for an adverse effect would be associated with the specific application and corrosive conditions. Because we are not aware of specific conditions of use, we are unable to determine whether the nonconformance could or will result in a substantial safety hazard (i.e., a "defect", as defined in Part 21).
Required action:
Notification: Page 2
OCT-23-2009 14:18 FROM:
TO:US NRC P. 4/5 Hilti, Inc.
5400 South 122d East Avenue Tulsa, OK 74146 (918) 252-6000 ImS We recommend customers use the attached list of purchase orders, and item and lot numbers, to determine whether there is any evidence the affected product was received. Alternatively, identification of nonconforming washers on previously installed anchors can be accomplished by magnetic check.
Installations incorporating nonconforming products should be evaluated to determine the potential effect on the attachment.
If you have any questions or concerns, please contact:
Tom Horan Quality Manager, Hilti, Inc.
918.872.3606 Tom.horanc&hilti.com Sincerely, Hilti, Inc.
Martin Schofield VP, Product Safety/Liability 706.227.9218 Martv.schofield@hilti.com Cc: (attachment for below entitie.s contain only purchase information relevant to that entity)
PSE & G Nuclear LLC Regulatory Assurance Mail Stop: S05 P.O. Box 236 Hancocks Bridge, NJ 08038 Progress Energy Site Vice President Brunswick Nuclear Plant N.C. Hwy, 87 Box 10429 Southport, NC 28461 cc: Progress Energy Site SUPV-Lic/Reg Prog Brunswick Nuclear Plant N.C. Hwy, 87 Box 10429 Southport, NC 28461 Entergy Operations, Inc.
P.O. Box 31995 Jackson, MS 39286-1995 Attn: Manager, Operating Experience M-ECH-595 Arizona Public Service Co.
P.O. Box 52034, Mail Station 7990 Phoenix, AZ 85072 Attn: Procurement Engineering Section Leader Entergy Operations, Inc P.O. Box 31995 Jackson, MS 39286-1995 Attn: Manager, Operating Experience M-ECH-595 Notification: Page 3
OCT-23-2009 14:19 FROM:
a0 TO:US NRC P.5/5 Hilti, Inc.
5400 South 122Dd East Avenuc Tulsa, OK 74146 (918) 252-6000 L
I Pr (Li (I-(2~
'v Re:
Notification of a 10 CFR Part 21 relevant discovery for Hiiti KB3 anchors Attachment - NRC Potentially Affected Safety-Related Purchase Orders October 23, 2009 Customer Date of Shipment Customer Quantity Item Name P.O. #
P S E & G November 1, 2007 4500428782 1 box @ 100/box
- 282565 Nuclear 141/4" x 2-1/4" P S E & G August 21, 2008 4500475069 2 boxes @ 100/box It 282565 Nuclear 1/4V" x 2-1/4" Entergy December 18, 2008 10219662 1 box @ 100/box
- 282565 Nuclear /
1/4" x 2-1/4/4" Pilgrim Progress October 24, 2007 346032 1 box @ 100/box
- 282566 Energy /
1/4" x 3-4" Brunswick Progress January 24, 2008 359508 1 box @ 100/box
- 252566 Energy /
1/4" x 3-1/4/"
Brunswick Progress February 27, 2008 365403 1 box @ 50/box
- 282568 Energy /
3/8" x 3-/4" Brunswick Progress March 13, 2008 367162 1 box @ 50/box
- 282568 Energy /
March 14, 2008 3 boxes @ 50/box
- 282568 Brunswick 3/8" x 3-Y4" Progress March 13, 2009 428764 4 boxes @ 50/box
- 282568 Energy /
3/8" x 3-3/
Brunswick Arizona October 16, 2008 500525800 4 boxes @ 50/box
- 282567 Public 3/8" x 3" Service Co, Entergy /
September 24, 2009 10252405 1 box @ 50/box
- 282568 Waterford 3 3/8" x 3-34"
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