VEANInc. -yox 7007Crote de Liesse Tel: (514) 748-7743

Montreal, Quebec Fax: (514) 748-8635

Canada H4T 1G2 Web: www.velan.com

jebruary 04, 2000

Ref. No.: BNLOO0202-02

United States Nuclear Regulatory Commission 475 Allendale Road .,,

King of Prussia, PA 19406 -M

Attn: Mr. Jim Wiggins

Subject: 3" P.S. Yoke Failure co

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the

Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation

#111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.

Mgr. Nuclear Div.

Celebrating 50 Years of Valve Manufacturing

VELAN Inc. 7007 C6te de Liesse Tel: (514) 748-7743 Montreal, Quebec Fax: (514) 748-8635 Canada H4T 1 G2 Web: www.velan.com

February 04, 2000Ref. No.: BNLOO0202-01

Southern Nuclear Operating Co. 42 Inverness Parkway Birmingham, AL 35242

Attn: Mr. W. Smallwood Mail Code: BIN 016

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.

ilsson Mgr. Nuclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

0j . eI

VELAN Inc. ;ýw' 7007 C6te de Liesse Tel: (514) 748-7743 Montreal, Quebec Fax: (514) 748-8635 Canada H4T 1G2 Web: www.velan.com

February 04, 2000Ref. No.: BNLOO0202-12

Southern Nuclear 40 Inveress Parkway P.O. Box 1295 Birmingham, Alabama 35242

Attn: Mr. L. Robertson

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp. .

.H. ilsson Mgr. Nuclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

v ie

/ý,L

Celebrating 50 Years of Valve Manufacturing

VELAN Inc. 7007 Cbte de Liesse Tel: (514) 748-7743 Montreal, Quebec Fax: (514) 748-8635 Canada H4T 1G2 Web: www.velan.com Ferar

February 04, Zuuu

Ref. No.: BNL000202-03

Tennessee Valley Authority Browns Ferry Nuclear P.O. Box 2000 Decatur, AL 35609-2000

Attn: Mr. C. Alan Looney

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.

tR-Nilsson Mgr. Nuclear Div. c.c. US NRC

VELAN Inc. 7007 C6te de Liesse Tel: (514) 748-7743 Montreal, Quebec Fax: (514) 748-8635 Canada H4T 1G2 Web: www.velan.com

F'ebruary 04, 2000Ref. No.: BNLOO0202-04

Niagara Mohawk Power Corp. Nine Mile Point P.O. Box 63 Lycoming, N.Y. 13093

Attn: Mr. Richard Appa, Procurement Eng.

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.

iB. sson Mgr. Nuclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

weit,

oSV�

Mgr. Nuclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

VELAN Inc. 7007 C~fe dle Liesse Tel: (514) 748-7743 5 Montreal, Quebec Fax: (514) 748-8635 V E LA N Canada H4T 1G2 Web: www.velan.com

February 047M00

Ref. No.: BNL000202-05

Entergy Operations Pilgrim Station - Support Building 600 Rock Hill Road Plymouth, MA 02360

Attn: Mr. Raymond Pace, Mechanical Systems Mgr

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.

0 ,c

Velan Valve Corp.

Mgr. Nuclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

VELAN Inc. 7007 C6te dle Liesse Tel: (514) 748-774350 Mont real, Quebec Fax: (514) 748-8635 V EA Canada H4T IG2 Web: www.velan.com eEL Ar 4

Febru-ary 0, 2

Ref. No.: BNLOO0202-06

Northeast Nuclear Millstone Nuclear Power Station P.O. Box 128 Waterford, CT 06385-0128

Attn: Mr. Steve Sheehan

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

VELAN Inc. 7007 C6te de Liesse Tel: (514) 748-7743 Montreal, Quebec Fax: (514) 748-8635 Canada H4T 1G2 Web: www.velan.com

February 04, 2000Ref. No.: BNLOO0202-07

New York Power Authority J.A. Fitzpatrick Nuclear Plant P.O. Box 41 Lycoming, N.Y. 13093

Attn: Mr. Michael Colomb

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.

B. N1lsson 1, Mgr. Nuclear Div.

c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

01"e

VELAN Inc. 7007 C6te de Liesse Tel: (514) 748-7743 50 Montreal, Quebec Fax: (514) 748-8635 Canada H4T 1G2 Web: www.velan.com

February 04, 2MU(Ref. No.: BNLOO0202-08

Duke Energy Company Oconee Power Station P.O. Box 219 Seneca, SC 29679

Attn: Mr. Phillip Bowers

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.,

/ii Uss oN 4(gr. Nuclear Div.

c.c. US NCR & SNM Inc.

Celebrating 50 Years of Valve Manufacturing

0 � ce

VELAN Inc. 7007 C~te de Liesse Tel: (514) 748-7743 MnraQuebec Fax: (514) 748-8635 V EA

Caada H4T 1G2 Web: www~velan.com T EA February 04, 2000

Ref. No.: BNLOO0202-09

Florida Power & Light (Turkey Point) 6453 South Ocean Drive Jensen Beach, Florida 34957

Attn: Mr. B.W. Lynch

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp.

ilsson Mgr. Nuclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

VELAN Inc. 7007 G6te de Liesse Tel: (514) 748-7743 5 Montreal. Quebec Fax: (514) 748-8635 VV EA Canada H-4T 1G2 Web: www.velan.comn T FebrAry0,20

February 04, 2000

Ref. No.: BNLOO0202-10

Consumers Energy Palisades Plant 27780 Blue Star Memorial Highway Covert, Michigan 49043

Attn: Mr. Tom Saarela

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve

'Mgr. Nuclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

VELAN Inc. 7007 C6te de Liesse Tel: (514) 748-7743 50 Montreal, Quebec Fax: (514) 748-8635 V VE L A N Canada H-4T 1 G2 Web: www.velan.com V tebrAryULU

Ref. No.: BNLOO0202-11

Niagara Mohawk Nine Mile Point, Unit 2 P.O. Box 63 Lycoming, N.Y. 13093

Attn: Mr. Dennis Weaver, Mechanical Eng.

Subject: 3" P.S. Yoke Failure

Gentlemen,

Alabama Power, Farley Plant, experienced a problem with a 3" Air Operated Pressure Seal Gate valve, using the Bayonet style Yoke. The Yoke arms on this particular valve broke in the top section of the arms.

Yoke was returned to Velan for examination of the cracked area. An MT was performed together with a full visual inspection. No linear indications were found in the area of the break, nor anywhere else on the Casting. Since this valve is equipped with an Air Operator, we believe that the break may have occurred as a result of metal fatigue due to weight of the Actuator as well as systems vibrations.

Additionally, valves using the Bayonet style Yoke were designed and manufactured during the period when Codes and standards did not define this part as being pressure retaining. The Code Interpretation #111-1-86-58, which clarified this, was issued in 1986. As a result MT was not performed nor were CMTR provided for the Yoke. We discontinued production of Nuclear valves, using this design around 1974.

Our record indicates that we may have furnished Pressure Seal valves, which have the Bayonet style Yoke, to your facility. As a precaution, we recommend that Pressure Seal valves using this style of Yoke be inspected at your convenience. Should you detect any cracks anywhere on the Yoke, we request you pass your finding on to us for further action.

We trust this meets with your acceptance. Should additional assistance be required, please do not hesitate to contact us, we remain

Sincerely yours,

Velan Valve Corp

isson Mg. Nuiclear Div. c.c. US NRC

Celebrating 50 Years of Valve Manufacturing

0 Wce