United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #: 9509210006

Nuclear Division of B&G Manufacturing Company, Inc.
3873 West Oquendo o Las Vegas, Nevada 89118-3098
     (703) 739-1966 o Fax (702) 739-1960

September 11, 1995                                     QAM-95-065

Document Control Desk
U.S. Nuclear Regulatory Commission
Washington, DC 20555

Reference: 10 CFR, Part 21 Notification 

To Whom It May Concern:

This letter clarifies certain matters discussed in our earlier
notification of defect to the Nuclear Regulatory Commission pursuant to 
10 CFR Part 21, paragraph 21.21, (4), which was set forth in our letter
of August 29, 1995.

B&G Manufacturing Co., Inc.'s Cardinal Industrial Products Division (CIP)
was informally contacted by Duquesne Light-Beaver Valley Power Station to
discuss mechanical failures that were discovered, when they conducted
supplemental testing on a Lot of 3/8 - 24 x 2 A-193 B7 HEX CAPSCREWS
identified by head markings (B7, C, TS9, S4).  These fasteners were
processed, sold, and supplied to Duquesne Light on purchase order D 
136646 by Cardinal Industrial Products, L.P., the entity from which B&G
earlier this year purchased certain assets, including the name.

The method of performing additional testing was discussed with Duquesne
Light and their subcontracted Testing Laboratory to assure that the
testing was performed in accordance with ASTM A-370.  It was decided that
Duquesne Light would provide CIP with a sample to be tested by CIP, with
a Duquesne representative present.

All four (4) samples supplied by Duquesne were tested at CIP, with one
(1) failure.  The failure exhibited an unusually low hardness and tensile
per the material specification.  It should be noted that ASTM A-193 B7
material does not have a hardness requirement.

U.S. Regulatory Commission                                       Page 2
September 11, 1995

CIP pulled additional product samples from the stock purchased from the
prior owner, and by conducting hardness evaluation, identified other
failures.  CIP sent one (1) sample that passed hardness and one (1)
sample that failed hardness out for metallurgical examination by an
approved testing laboratory.

The results of this examination indicated that the "Good" sample had.006
"decarburization, and a core hardness of 35 HRC, while the "Bad" sample
had no decarburization, and a core hardness of 95.5 HRB.  The low core
hardness, and more specifically, the lack of decarburization would
indicate that the "Bad" sample did not receive the full heat treatment. 
The decarburization is formed when alloy steel is heat treated in an air
atmosphere, but in order for it to form the parts must reach the
prescribed temperature.

CIP also performed hardness tests on ten (10) heat lot charges that were
processed before and after the suspect charge was heat treated.

Duquesne Light identified test failures with product lot (3/8 x 4 A-193
B7 lot # 12133 lot code S4).  CIP has identified two (2) additional heat
lot charges that exhibit the same failures in hardness as the heat lot
identified by Duquesne light.  Those lots are: 3/8 x 6 A-193 B7 Lot #
12134, Lot Code S5, and 5/8 - 11 x 2 1/2, A-193 B7 Lot # 11127, Lot Code
TU 1.

Attachment 1 to our report of August 29, 1995, identified all of the
customers who, based on the records CIP acquired from the prior owner,
received these suspect fasteners that could possibly create a safety
hazard.  All of these customers received these fasteners from the prior
owner, and we have notified the prior owner of this situation.  The
customers have been notified of this defect by CIP as a service to its
current customers and have been instructed to evaluate this condition in
accordance with 10 CFR Part 21 paragraph 21.21 (a) (1) (ii) and (b) (1).

CIP is in the process of conducting additional testing on all ASTMA-193,
B7 inventory that was heat treated by the prior owner.  A hold has been
placed on our A-193 B7 inventory to prevent distribution until completion
of our evaluation.  The above defective heat lots have been
noncomformanced and placed in our bonded noncomformance area. 
Additionally, our heat treatment facility has been dosed pending further

CIP will provide a complete investigation report to the NRC within sixty
(60) days.

U.S. Regulatory Commission                                       Page 3
September 11, 1995

Should you have any questions, concerning this issue, please contact
David Z. Hathcock, Quality Assurance Manager, at (702) 739-1966.


William A. Edmonds

cc: NRC file


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