ML20126F808

Part 21 Rept Re Possible Condition of Gag Plug in Cap of Valves That Cause Valves Not to Lift to Requirement for Providing Full Capacity.Affected Customers Notified.Removal of Caps &/Or Gag Plugs Recommended

ML20126F808
Person / Time
Site:	Arkansas Nuclear, North Anna, Cook, Zion  File:ZionSolutions icon.png
Issue date:	12/22/1992
From:	Cooper J DRESSER INDUSTRIES, INC.
To:	NRC
References
REF-PT21-92 NUDOCS 9212310145
Download: ML20126F808 (24)

Text

_. . _ .. ._ . _ _ . _ __ _ ___ __ __ . _ _ _

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' Industrial Valves @# ESSER) )

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Industrial Valve Operation QUALITY SYSTEMS DEPARTMENT

Dresser industries.Inc. PHONE: 318'640-6112 P.O. Box 1430 . Alexandria. Louisiana 71309-1430 FAX: 318/640-6325 "CERTIFICA rE oF CoMPUANCE/CoNFoRMANCE" li December 22,1992 Page 1 of 2 The Director, Office of Inspection & Enforcement-U.S. Nuclear Regulatory Comrnission

Washington, DC 20555 a

Subject:

Industrial Valve Operations, Dresser Ind., Inc.

j 10 CFR Part 21 Notification, Dresser File No. 92-02, i l Reportable Defect as follows:

j Possible condition of gag plug in the cap of valves that cause valves not to l lif t to requirement for providing full flow capacity. This condition is j considered a possible safety hazard.

Gentlemen:

f The result of our 10CFR Part 21 investigation, under file number 92 02, is that a j reportable defect does exist in the valves involved and delivered to nuclear power plants j- in the United States, i

I The investigation regards a condition in Consolidated valves, delivered for use in nuclear power plants, that may cause the valves not to open or flow at full capacity upon

opening. The valve types are Dresser, Industrial Valve Operations, type 1990 and 3990 j- Safety Relief, i

! The condition that may cause the improper functioning of the valves is as follows:

i The valves contain " gag plugs" in the top of the caps of the valves to close the threaded

. hole when the gag screw is not installed. These gag plugs may be longer than required by

Dresser and the result is restriction of the lift of the valve.

This condition was first reported by Commonwealth Edison, Zion Nuclear Plant, to-Dresser Product Engineering, on 12/21/92.

} Dresser notified the affected customers / power plant personnel on 12/22/92, l' recommending they investigate this condition and determine the location of the valves.

We have recommended that where valves are installed in a system,- that the caps and/or gag plugs be removed immediately to allow the valve to function in a fail safe condition,

providing full capacity and overpressure protection.

1 a

9212310145 921222 hl PDR ADOCK 05000295

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The Director, Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Page2 of 2 December 22,1992 We have submitted with the notifications, instruction TR92-60, Revision 0, which allows either replacing the gag plug or machining the gag plug currently installed in the valve and reinstalling it.

The order number that the valves were purchased on and the serial numbers of the valves involved were furnished to each customer / utility notified.

Please do not hesitate to call upon us if you should have any questions.

, Sincerely, J. M. Cooper Executive Vice-President & General Manager Attachments

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industrial valves CDMESSEh Industrial Valve Operation OUAUT SYSTEMS DEPARTMENT  !

Dresser Industries,Inc. PHONE: 318/6404112 P.O. Box 1430

• Alexandria. Louisiana 71309-1430 FAX: 318/640-6325

• CERTIFICATE OF CoMPUANCE/coNFORMANCE" i This is a cony of the notification sent to the involved customer or utility. Each notification had tho annlicable information filled in.

(Customer / Power Plant)

(Address)

, (See copies of Notifications sent)

Subject:

10 CFR Part 21 Notification. Possible condition of gag plug in cap of valves causing valve not to lift to requiremont for providing full flow capacity.

Immediate Corrective Action Should Be Taken On This Condition This notification is to inform you of a possible condition in Consolidated valves delivered to your facility that may cause the valve not to open or flow at full capacity upon opening. The valve types are Dresser, industrial Valve Operations, type 1990 and 3990 Safety Rellef.

The condition that may cause the improper functioning of the valves is as follows:

The valves contain " gag plugs" in the top of the caps of the valves to close the threaded hole when the gag screw is not installed. These gag plugs may be longer by Dresser and the result is restriction of the lift of the valve.

4 This condition was first reported by Commonwealth Edison, Zion Nuclear Plant, to Dresser Product t:ngineering.

Dresser is recommendina vou determine the location of env valves that have been furnished to vour facilitv. and if thev are installed in a svstem, that the caos and/or aaa olua be removedimmediatelv to allow the valve to function in a fait safe condition orovidino full canacitv and overoressure orotection.

Valves not currently in service should be checked and corrective action on the gag l plug be performed prior to valve installation or bench testing with the cap installed. l l

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• l 10 CFR Part 21 Notification industrial Valve Operations, Dresser Ind., Inc., Alexandria, Loulslana _

4

Enclosed with this notification is a set of instructions, instruction TR92 60, Revision 0, for either replacing the gag plug or machining the gag plug currently Installed in the valve and reinstalling it, i

Valves were furnished on your order number (Insert customer order number valves were purchased on)

Valve serial numbers are: (list valve serial numbers involved)

Upon completion of the corrective action on the listed valves, please provide Dresser Field Service, Terry Barnes, with a written report listing the valves and the action taken for our records, if you have any questions, please contact one of the following Dresser personnel:

Terry Barnes, Field Service 318-640 6057 Rolland Huffman, Product Engineering ' 318-640-6202 Respectfully, i

J.P. Watz Principal Quality Assurance Engineer cc: Terry Barnes Dresser 10CFR Part 21 File No. 92-02 Rolland Huffman T.R. Bordelon B.G. Brunson l

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' DRESSER INDUSTRIES Industrial Valve Operations P. O. Box 1430 1 Alexandria, La. 71309-1430 TR92-60 Revision 0

Page 1 of 1 INSTRUCTION FOR-REPLACING GAG PLUG IN 1996 / 3996 SERIES SAFETY RELIEF VALVES

1. Option 11 Replace Gag Plug with new part, Dresser part no. 2150368.

Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and scrap Gag Plug.

Step 3 -- Install new Gag Plug with gasket.

4 Step 4 -- Torque to 8 - 12 ft-lbs 1

2. Ootion 21 Remachine Gag Plug to proper length.

4 Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and issue Gag Plug for rework.

Step 3 -- Remachine Gag Plug to length shown in Figure 1.

Step 3 -- Install reworked Gag Plug with gasket..

Step 4 -- Torque to 8 - 12 ft-lbs J

5 /16" --*

450 Chamfer 1st Thread I

9/16 Hex (

! / 11liffill:IlNllM i ___Ji!Mhg i 3/8-16UNC-2B Thread FIGURE 1

! Tolerance: 1 1/64 l

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R. S. Huffman~ Date-Sr. Product Engineer l Product Engineering Dept.

l- Application Group i

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a it DRESSER INDUSTRIES Industrial valve Operations P. O. Bor=1430

! Alexandria, La. 71309-1430 ,

1. -

22-92 TECHNICAL REVIEW- 0S536-92-61 Date: l l

Revision 0 Page 1 of:2- ,

l- '

j' Customer: Commonwealth--Edison Company 4

Zion Nuclear Plant l Customer Purchase Order No.: 4H1129  ;

4 j Dresser Order No.: 18-65341-0 Subiect: Gag Plugs Being Too Long j Valve Type: 3996 ,

e Valve S/N.TJ-53456 thru TJ-53461 ,

Reference:

1. Dresser drawing 3Nc3114-(Master Control Document).

i. 2. -Telecon of: 12-21-92:from Jim Ashley, Com. led.

4

. 1.0 Verification -

! 1.1 The preliminary review'has been performed and:we are'in agreement that the subject valves 1have-the wrong--Gag Plug. On? drawing g 3NC3114, sheets 5 & SC. Ref. No. 27, the:part number shown is

, 2150316. 11t'should have been-2150368.-- For,part number 2150316,. -

l the body length is 1/2 inch. For part number.2150368,' the body j length-is 5/16 inch. .

2.0 Corrective Action f-

2.1 The Gag Plug-can be replaced or reworked.- 3se Instruction TR92-60 .

i- -which is attached.

, 2.2 It isLDresser's understanding _that=CommonwealthLEdison has-already machined the' Gag Plugs in the subject. valves to aLshorter I- length. . This is the correct ~ approach. A' body. length greater than 5/16 inch;is acceptable provided clearance between the end:Lof the Gag Plug and the' top.of the Spindle has been verified to be

j. greater thanl0.155 inch.

i i

3.0 10CFR21

, - 3.1 This is a safety: concern because.the longerxGag Plug may-prevent' .

the valveLfrom opening to full lift. 'Thus, capacity and over -

pressure protection;are not-assured. 1 Amount liftLwill vary with-tolerance buildup.

3.21--Dresser has: opened-a 10CFR21 file and is:acceptingLthe^ responsible

_ of notifying other nuclear plants concerning<these= valves.- -

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, l DRESSER INDUSTRIES TECHNICAL REVIEWt 08536-92-61 ,

Revision l0 Industrial Valve Operations Page 2 of:2 a 3.0 10CFR21, continued i

3.3 Valve S/N TJ-67060 thru TJ-67065 and TJ-67156.thru TJ-67158'(9 valves) for Commonwealth Edison purchase orders 4H4526 and 4K0881 are in-housn. Dresser will install the correct c-eg Plug in these ,

valves. Also, drawing 3NC3114 is being revised to show the

correct part number for the Gag P.,10 J

J

! R. S. Huffman Date i Sr. Product Engineer

Product Engineering Dept.

j Application Group i

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DRES8ER INDUSTRIES Industrial valve Operations P. O. Box 1430 Alexandria, La. 71309-1430 TR92-60 Revision 0 Page 1 of 1 INSTRUCTION FOR REPLACING GAG PLUG IN 1996 / 3996 SERIES SAFETY RELIEF VALVES

1. Ootion 11 Replace Gag Plug with new part, Dresser part no. 2150368.

l Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and scrap Gag Plug.

Step 3 -- Install new Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

2. Option 21 Remachine Gag Plug to proper length.

Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and issue Gag-Plug for rework.

Step 3 -- Remachine Gag Plug to length shown in Figure 1.

Step 3 -- Install reworked Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

- 5/16" ~

45 0 Chamfer 1st Thread 9/16 Hex (

/ hNihI!IlfliidlN

')  !@f$dRQ l 3/8-16UNC-2B Thread 2

FIGURE 1 Tolerance

1 1/64 fM R. S. Huffman

>kl7Q Date l Sr. Product Engineer i Product Engineering Dept.

Application Group 4

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1 INDUSTRIAL VALVE OPERATIONS QUAUTY SYSTEMS DEPARTMENT 3

Dresser Industries, Inc. Phone:318-640-6112 P.O. Box 1430 Fax:318-640-6325 Alexandria, Louisiana 71309-1430 ftAPIEAX MESSAGE wpwin\ document \faxtormt -

To: Viginia Power Company, North Anna Power Station Attention: Marty L. Bowing Phone: 804-273-2699 Date: December 22,1992

Fax No.:804-273-3582 From: John P. Watz Principal Quality Assurance Engineer Attachedis a 10CFR Part 21 Notification. Please take immeadiate action as outlinedin the attached notice. It concerns a possible safety hazard,if the valves involved have been installed on an operating system, f

4 4

I Regards, i

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l J.P. Watz

industrial Valves COMESSE[ }

Industrial Valve Operation OUAUTY SYSTEMS DEPARTMENT DresserIndustries,Inc. PHONE: 318540-6112 P.O. Box 1430 Alexandria, Louisiana 713091430 FAX: 318/640-6325

' CERTIFICATE OF CoMPuANCE/coNFORMANCE*

f Virginia Electric & Power North Anna Nuclear Power Station Innsbrook Technical Center 5000 Dominion Blvd.

Glen Allen, VA 23060

Subject:

10 CFR Part 21 Notification. Possible condition of gag plug in cap of valves causing valve not to lift to requirement for providing full flow capacity, immediate Corrective Action Should Be Taken On This Condition This notification is to inform you of a possible condition in Consolidated valves delivered to your facility that may cause the valve not to open or flow at full capacity upon opening. The valve types are Dresser, Industrial Valve Operations, type 1990 and 3990 Safety Relief.

The condition that may cause the improper functioning of the valves is as follows:

The valves contain _" gag plugs" in the top of the caps of the valves to close the threaded hole when the gag screw is not installed. These gag plugs may be longer l by Dresser and the result is restriction of the lift of the valve.

This condition was first reported by_ Commonwealth Edison, Zion Nuclear Plant, to Dresser Product Engineering.

Dresser is recommendina vou determine the location of anv valves that have been l

furnished to vour facilitv. andif thev are installed in a svstem. that the caos and/or aac 01u0 be removedimmediatelv to allow the valve to function in a failsafe condition orovidino full caoacitv and overoressure orotection.

Valves not currently in service should be checked and corrective action on the gag l plug be performed prior to valve installation or bench testing with the cap installed, l

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4 . .

j 10 CFR Part 21 Notification Industr:al Valve Operations, Dresser Ind., Inc., Alexandria, Louisiana

]t Enclosed with this notification is a sot of instructions, Instruction TR92-60, Revision 0, for either replacing the gag plug or machining the gag plug currently g

installed in the valve and reinstalling it. <

3 Valves were furnished on your order number CNT374029 Valve serial number is: TJ-65576 Upon completion of the corrective action on the listed valves, please provide j Dresser Field Service, Terry Barnes, with a written report listing the valves and the action taken for our records.

If you have any questions, please contact one of the following Dresser personnel:

Terry Barnes, Field Service 318-640-6057 Rolland Huffman, Product Engineering 318 640-6202 l Respectfully, i /

/J.P. Watz Principal Quality Assurance Engineer cc: Terry Barnes Dresser 10CFR Part 21 File No.- 92-02 Rolland Huffman T.R. Bordelon

!- B.G. Brunson 1

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DRESSER INDUSTRICO Industrial valve Operations-P. O. Box 1430 Alexandria, La. 71309-1430 TR92-60 Revision 0 Patje 1 of 1 INSTRUCTION FOR REPLACING GAG PLUG IN 1996 / 3996 SERIES SAFETY RELIEF VALVES

1. Option 11 Replace Gag Plug with new part, Dresser part no. 2150368.

Step 1 -- Remove Gag Plug with gasket.

l Step 2 -- Save gasket and scrap Gag Plug.

1 Step 3 -- Install new Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

2. Option 21 Remachine Gag Plug to proper length.

Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and issue Gag Plug for rework.

Step 3 -- Remachine Gag Plug to length shown in Figure-1.

Step 3 -- Install reworked Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

- 5 /16 " --*

45 0 Chamfer 1st Thread 9/16 Hex (

/ hitIdlithlflillII#

I i

(

M!ltEg -

3/8-16UNC-2B Thread FIGURE 1 Tolerance: 1 1/64 f

R. S. Huffman Date Sr.-Product Engineer Product Engineering' Dept.

Application Group

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1 INDUSTRIAL VALVE OPERATIONS QUAUTY SYSTEMS DEPARTMENT Dresser Industries, Inc. Phone:318-640 6112 4 P.O. Box 1430 Fax:318-640-6325 '

Alexandria, Louisiana 71309-1430 RAMFAX MESSAGE i wpwin\ document \fatformt To: Indiana & Michigan Power Co., Donald C. Cook Nuclear Power Plant i

Attention: Mike Barfelz Phone: 616 44MF4484-

%5'- 19 o I c<T. 1424 l

Date:Decensber 22,1992 i

Fax No.:6 t S-466 2905 From: John P. Watz Principal Quality Assurance Engineer

)

, Attachedis a 10CFR Part 21 Notification. Please take immeadiate l action as outijnedin the attached notice. It concerns a possible safety hazard,if the valves involved have been installed on an_ operating system.

l Regards, i

l l

l J.P. Watz i 1 l

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Industrial Valves COM55@ .

2 Industrial Valve Operation OUAUTY SYSTEMS DEPARTMENT Dresser Industries,Inc. PHONE: 318/640-6112 P.O. Box 1430 Alexandria. Louisiana 71309-1430 FAX: 318/640-6325

' CERTIFICATE OF coMPUANCE/CoNFoRMANCE" l

i indiana & Michigan Light Co.

Donald C. Cook Nuclear Plant 1 Cook Place Bridgmen, Michigan 49106

Subject:

10 CFR Part 21 Notification. Possible condition of gag plug in cap of valves causing valve not to lift to requirement for providing full flow capacity.

Immediate._ Corrective Action Should Be Taken On This Condition This notification is to inform you of a possible condition in Consolidated valves delivered to your facility that may cause the valve not to open or flow at full capacity upon opening. The valve types are Dresser, Industrial Valve Operations, type 1990 and 3990 Safety Relief.

4 The condition that may cause the improper functioning of the valves is as follows:

The valves contain " gag plugs" in the top of the caps of the valves to close the threaded hole when the gag screw is not installed. These gag plugs may be longer

! by Dresser and the result is restriction of the lift of the valve.

This condition was first reported by Commonwealth Edison, Zion Nuclear Plant, to Dresser Product Engineering.

Dresser is recommendino vou determine the location of env valves that have been

furnished to vour facilitv. and if thev are installed in a svstem. that the caos and/or osa Diva be removed immediateiv to allow the valve to function in a fait safe condition orovidina full caoacitv and overoressure orotection.

Valves not currently in service should be checked and corrective action on the gag

, plug be performed prior to valve installation or bench testing with the cap installed.

l r

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10 CFR Part 21 Notification Industrial Valve Operationis, Dresser ind., Inc., Alexandria, Loulslana Enclosed with this notification is a set of instructions, Instruction TR92 60, Revision 0, for either replacing the gag plug or machining the gag plug currently installed in the valve and reinsta' ling it.

Valves were furnished on your order number 01838-041-1X Valve serial numbers are: TJ 50202 through TJ 50252 TJ 81963 TJ-81964 Upon completion of the corrective action on the listed valves, please provide

. Dresser Field Service, Terry Barnes, with a written report listing the valves and the action taken for our records, if you have any questions, please contact one of the' following Dresser personnel:

, Terry Barnes, Field Service 318-640-6057 i Rolland Huffman, Product Engineering 318-640-6202 t

Respectfully,

, J.P. Watz Principal Quality Assurance Engineer cc: Terry Barnes Dresser 10CFR Part 21- File No. 92-02 Rolland Huffman T.R. Bordelon B.G. Brunsco d

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DRESSER INDUSTRIES Industrial Valve operations P. O. Box 1430 Alexandria, La. 71309-1430 TR92-60 ,

Revision 0 Page 1 of 1 INSTRUCTION FOR REPLACING GAG PLUG IN 1996 / 3996 SERIES SAFETY RELIEF VALVES

1. Ootion h Replace Gag Plug with new part, Dresser part no. 2150368.

Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and scrap Gag Plug.

Step 3 -- Install-new Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

8. Dotion h Remachine Gag Plug to proper length.

Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and issue Gag Plug for rework.

Step 3 -- Remachine Gag Plug to length shown in Figure 1.

Step 3 -- Install reworked Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs t'

--- 5/16" -

450 chamfer 1st Thread 9/16 Hex (

/ MI@in7dl@

) ___J@l!!$3g

( ,

3/8-16UNC-2B Thread FIGURE 1 Tolerances i 1/64 ,

fQ R. S. Huffman' Date Sr. Product Engineer Product Engineering Dept.

Application Group

- _ . _ . - . - . ~ - ..-_. _ _ . . - - .

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1 INDUSTRIAL VALVE OPERATIONS QUAUTY SYSTEMS DEPARTMENT Dresser Industries, Inc. Phone:318-640-6112 P.O. Box 1430 Fax:318-640-6325 Alexandria, Loulslana 713091430 RAMFAX MESSAGE sywinhunwnnfatformi To: Entergy Operations Inc., ANO Attention: Dick Schelde (Phone:501964 8618)

Date:Docember 22,1992 Fax No.:501964 8685 4

From: John P. Watz Principal Quality Assurance Engineer Attached is a 10CFR Part 21 Notification. Please take immeadiabit g_QRon as outlinedin the attached not/GL. lt concerns a possible safety hazard,if the valves involved have been installed on an operating system.

, Flogards, J.P. Watz

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Indust'rlei velves ConsstD Industrial Valve Operation OUALITY SYSTEMS DEPARTMENT Dresser industries,Inc. PHONE: 318'640 6112 I P.O. Box 1430

• Alexandria. Louisiana 713091430 FAX: 31&'640-6325

• CERTIFICATE oF COMPLIANCE /CoNFORMANCE" I

j l December 22,1992 Revised 12/23/1992 j I Arkansas Power & Light Co.

Arkansas Nuclear One 4 Rt. 3 Box 137G Russellville, AR 72801

Subject:

10 CFR Part 21 Notification. Possible condition of gag plug In cap of

valves causing valve not to lift to requirement for providing full flow capacity.

I immediate Corrective Action Should Be Taken On This Condition This notification is to Inform you of a possible condition in Consolidated valves delivered to your facility that may cause the valve not to open or flow at full _

capacity upon opening. The valve types are Dresser, Industrial Valve Operations,

type 1990 and 3990 Safety Relief. '

, The condition that may cause the improper functioning of the valves is as follows:

The valves contain " gag plugs"in the top of the caps of the valves to close the threaded hole when the gag screw is not installed. These gag plugs may be longer by Dressor and the result is restriction of the lift of the valve.

l This condition was first reported by Commonwealth Ediscn, Zion Nuclear Plant to Dresser Product Engineering.

Dresser is recommendina vou determine the location of anv valves that have been furnished to vour facilltv. and if thev are Installed in a svstem. that the cans and/or gag cluo be removed immediatelv to allow the valve to function In a fallsafe condition orovidino full caoacitv and overoresstire orotection.

Valves not currently in service should be checked and corrective action on the gag plug be performed prior to valve Installation or bench testing with the cap installed. <

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10 CFR Part 21 Notification Industrial Valvo Operations, Dressor Ind., Inc., Alexandria, Loulslana Enclosed with this notification is a set of instructions, instruction TR92 60, Revision 0, for olther replacing the gag plug or machining the gag plug currently Installed in the valvo and reinstalling it.

Valves woro furnished on your Entorgy Operations, Inc. order number 07757.

Volvo serial numbers are: TH 19051 Valvos woro furnished on your Entergy Operations, Inc. order number 205888.

Valvo serial numbers are: TH-78654 TH 78655 Upon completion of the correctivo action on the listed valves, please provide Drosser Field Service, Terry Barnes, with a written report listing the valvos and the action taken for our records.

If you have any questions, please contact one of the following Dressor personnol:

Terry Barnos, Floid Service 318 640 6057 Rolland Huffman, Product Engineering 318 640 6202 Respectfully, kf J. . Watz Principal Quality Assuranco Engineer cc: Terry Barnos Dressor 10CFR Part 21 File No. 92 02 Rolland Huffman T.R. Bordelon B.G. Brunson

4 1 $' .

DRESSER INDUSTRIES Industrini Valve operations P. O. Box 1430 '

Alexandria, La. 71309-1430 TR92-60 .

Revision 0 Page 1 of 1 INSTRUCTION FOR REPLACING GAG PLUG IN 1996 / 3996 SERIES SAFETY RELIEF VALVES

1. Ootion 11 Replace Gag Plug with new part, Dresser part no. 2150368.

4 Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and scrap Gag Plug.

, Step 3 -- Install new Gag Plug with gasket, j Step 4 ~~ Torque to 8 - 12 ft-lbs l

3. Oution 21 Ramachine Gag Plug to proper length.

Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and issue Gag Plug for rework.

Step 3 -- Ramachine Gag Plug to length shown in Figure 1.

, Step 3 -- Insta31 reworked Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

, 45 0 Chamfer ist Thread

! 9/16 Hex (

/ hld@lf0t@

j L

Ml!I@MQ 3/8-16UNC-2B Thread FIGURE 1 1

Tolerance: 1/64 A g R. S. Huffman Data Sr. Product Engineer Product Engineering Dept.

Application Group

_ _ _ _ _ _ _ _ . . __ __ ~ . _ _ .-

1 INDUSTRIAL VALVE OPERATIONS QUALITY SYSTEMS DEPARTMENT Dresser Industries, Inc. Phone:318-640-6112 P.O. Box 1430 Fax:318 640-6325 Alexandria, Loulslana 713091430 BSBEAX MESSAGE

.r. m um nu.arw.t i To:Clare Horan, Dresser Canada, Burlington Date:Docember 22,1992 From: John P. Watz Principal Quality Assurance Engineer cc:

i Ro: 10CFR Part 21 Notification attached.

Attached is a 10CFR Part 21 Notification. Please take immendiate_ action with vour customer on thlt It concerns a possible safety hazard,if the valves involved have been Installed on the customers system.

Regards,

< /

J.P. Watz l

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, 'twustrial Velves CD# ESSE 3

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industrial Valve Operation OVALITY SYSTEMS DEPARTMENT Drosser IndustriOS,Inc. PHONE: 318Ta40 6112 P.O. Dor 1430

• Alexandria Louisiana 713091430 FAX: 31240-6325

' CERTIFICATE OF CoMPuANcE/CoNFoRMANCE*

j c/o Dresser Canada Inc./ Valve & Controls Canadian Operations 5010 Service Road Burlington, Ontario, Canada L7L5R5 l for: Roman Ergo Nuclear Power Enterprize, Cern Avoda Project

Subject:

10 CFR Part 21 Notification. Possible condition of gag plug in cap of 1

valves causing valve not to lift to requirement for providing full flow capacity.

Immediate Corrective Action Should Be Taken On This Condition This notification is to inform you of a possible condition in Consolidated valves delivered to your facility that may cause the valve not to open or flow at full 4 capacity upon opening. The valve types are Dresser, Industrial Valve Operations, type 1990 and 3990 Safety Rollef.

The condition that may cause the Ir$1 proper functioning of the valves is as follows:

The valves contain " gag plugs" in the top of the caps of the valves to close the threaded hole when the gag screw is not installed. These gag plugs may be longer by Dresser and the result is restriction of the lift of the valve.

This condition was first reported by Commonwealth Edison, Zion Nuclear Plant, USA, to Dresser Product Engineering. 1 QLesseris recommendino vou determine the location of anv valves that have been furnished to vour facilltv. and if thev are Installed in a svstem. that the caos and/or oso 0100 be removedimmediatelv to allow the valve to function in a fall safe. l condition orovidino full caoacitv and overoressure orotection. I Valves not currently in service should be checked and corrective action on the gag plug be performed prior to valve installation or bench testing with the cap installed.

• j 10 CFR Part 21 Notification Industrial Valve Operations, Dresser ind., Inc., Alexandria, Loulslana Enclosed with this notification is a set of Instructions, Instruction TR92 60, Revision 0, for either replacing the gag plug or rnachining the gag plug currently installed in the valve and reinstalling it.

Valves were furnished on your order number 4H1129:

Valve serial numbers are: TH 38428 through TH 38431 Upon completion of the corrective action on the listed valves, please provide Dresser Field Service, Terry Barnes, with a written report listing the valves and the action taken for our records, if you have any questions, please contact one of the following Dresser personnel:

Terry Barnes, Field Service 318-640-6057 Rolland Huffman, Product Engineering 318-640-6202 Respectfully, 0i,

, .P. W z Principal Quality Assurance Engineer cc: Terry Barnes Dresser 10CFR Part 21 File No. 92 02 Rolland Huffman T.R. Bordelon B.G. Brunson

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DRESSER INDUSTRIES l

l Industrial Valve Operations P. O. Box 1430 Alexandria, La. 71309-1430 TR92-60 Revision 0 Page 1 of 1 INSTRUCTION FOR REPLACING GAG PLUG IN 1996 / 3996 SERIES SAFETY RELIEF YALVES

1. Ontion 11 Ruplace Gag Plug with new part, Dresser part no. 2150368.

Step 1 -- Remove Gag Plug with gasket.

Stop 2 -- Save gasket and scrap Gag Plug.

Step 3 -- Install new Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

2. potion 21 Remachine Gag Plug to proper length.

Step 1 -- Remove Gag Plug with gasket.

Step 2 -- Save gasket and issue Gag Plug for rework.

Step 3 -- Remachine Gag Plug to length shown in Figure 1.

Step 3 -- Install reworked Gag Plug with gasket.

Step 4 -- Torque to 8 - 12 ft-lbs

- 5 /16 " --*

45 0 chamfer ist Thread 9/16 Hex (

/ hl1Ifhl0lfiD$

i <!$1!1&Ag L .

3/8-16UNC-2B Thread FIGURE 1 Tolerance: 1 1/64 A g R. S. Huffman~ Date Sr. Product Engineer Product Engineering Dept.

Application Group

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