EXPANSION JOINT FAILURE AT GRAND GULF

  February 21st 1999

  It has recently been brought to our attention through an event report furnished by a

concerned customer, of another “Dogbone” expansion joint failure at the Grand Gulf

Nuclear Station. For those unfamiliar with the application, this expansion joint, also

known as a Belt Type, is located between the low pressure turbine and the surface

condenser. The failure of this product and the subsequent loss of vacuum will cause

the plant to shut down, resulting in significant monetary losses and potential damage to

plant equipment. This event report has generated many calls from our customers

inquiring as to LaFavorites’ knowledge of this recent event.

 

  Please be advised that LaFavorite Industries, its’ products or

services, were NOT involved in this incident.

 

  As a leading manufacturer of the “Dogbone” expansion joint we are always

concerned whenever a premature failure occurs, since this reflects negatively on the

product as a whole. While others may choose to compromise quality in the interest of

supplying a cheap product, LaFavorite takes pride in the many improvements we have made to

“Dogbone” expansion joints.

  We would like to take this opportunity to assure our customers that they have

received the highest quality products and splicing service available. Since 1986 when

our nylon reinforced “Dogbone” was introduced, we have received no reports of product

or splicing failures. As a matter of fact the splicing procedure employed by LaFavorite

was developed specifically for this product and is not simply an adaptation of a

conveyor belt splice, as performed by other vendors. To our knowledge, no other

vender uses the same method of splicing as LaFavorite.

  The “Dogbone” expansion joint has proven to be a very effective product when

properly manufactured, installed and spliced by experienced technicians. While

“Dogbones” of different makers may look similar, many differences can exist in the

component materials, that can effect product life and performance. LaFavorite was the

first company to manufacture this product using nylon reinforcement and continues to

do so, while other suppliers are still offering products using materials long ago proven

to be inferior.

  LaFavorite is committed to providing the very best products and services to the

entire power generation industry, as demonstrated by our exemplary record. If you

have any questions or concerns about your “Dogbone” expansion joints or are planning

a replacement, please contact LaFavorite and let our many years of experience and

integrity work for you.

 

  Sincerely,

  Thomas B Mastin, President

  Eric C Hague, Vice-President

 

 

 

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La Favorite Industries, Inc.

33 Shady Street, Paterson, New Jersey 07524