United States Nuclear Regulatory Commission - Protecting People and the Environment

General Information or Other Event Number: 37576
REP ORG: HUNT VALVE COMPANY, INC. NOTIFICATION DATE: 12/07/2000
LICENSEE: HUNT VALVE COMPANY, INC. NOTIFICATION TIME: 19:19[EST]
CITY: SALEM REGION: 3 EVENT DATE: 12/06/2000
COUNTY: STATE: OH EVENT TIME: [EST]
LICENSE#: AGREEMENT: Y LAST UPDATE DATE: 12/07/2000
DOCKET: PERSON ORGANIZATION
MICHAEL PARKER R3
KEVIN RAMSEY (fax) NMSS
VERN HODGE (fax) NRR
NRC NOTIFIED BY: WAYNE ALDRICH (via fax)
HQ OPS OFFICER: LEIGH TROCINE
EMERGENCY CLASS: N/A
10 CFR SECTION:
CCCC 21.21 UNSPECIFIED PARAGRAPH

EVENT TEXT

10 CFR PART 21 REPORT OF A DEVIATION - IDENTIFICATION OF A DEFECT WITH A COMPONENT ON VALVE ASSEMBLIES SUPPLIED TO USEC

The following text is a portion of a facsimile received from Hunt Valve Company, Inc.:

"We have discovered a material failure within our manufacturing process for the 1" UF-6 valves manufactured in accordance with ANSI N14.1. During our normal visual inspection[,] a few packing nuts were noted to have cracks located on the hex flats. These cracked packing nuts have been isolated to heat codes AXP and AFD."

"These valves were manufactured and shipped against contract No. 566948 for USEC. Our records indicate that we have shipped Lot Serial [Nos.] 200027-36 through 200027-40 containing the heat code AXP packing nuts, and Lot Serial [Nos.] 200027-5 [and] 200027-19 through 200027-35 containing heat code AFD. The total number of valves included in these shipments is 2,300 of which 1,300 are known to be from the affected heat codes (see attached table). All other inventory has been accounted for and isolated. These valves have been located at USEC and are being returned to Hunt Valve for replacement nuts."

"We are currently undergoing an investigation to determine the source of the defect but feel compelled to inform you by this communication of our preliminary findings. [...]."


 "Heat Code                                                   Lot Serial      



 [No.]               Date Shipped             Quantity                        



 (Total Supplied)                                                             



                                                                              



 AXP (735 pcs)                                                   200027-36    



 11/22/00                     97                                              



 200027-37                     11/22/00                    100                



 (233 in stock 12/4/00)                                       200027-38       



 11/22/00                   100                                               



 (100 on a shipment in shipping)                        200027-39             



 11/22/00                    100                                              



 200027-40                     11/22/00                    100                



                                                                              



 AFD (972 pcs)                                                   200027-5     



 5/31/00                       10                                             



 200027-19                      8/14/00                         9             



 (294 in stock 12/4/00)                                       200027-20       



 8/14/00                         7                                            



 200027-21                      8/31/00                       30              



 200027-22                      8/31/00                       44              



 200027-23                      8/31/00                       39              



 200027-24                      8/31/00                       33              



 200027-25                      8/31/00                       29              



 200027-26                      10/5/00                       53              



 200027-27                      10/5/00                       52              



 200027-28                      10/5/00                       67              



 200027-29                      10/5/00                       54              



 200027-30                      10/5/00                       62              



 200027-31                      11/3/00                       58              



 200027-32                      11/3/00                       45              



 200027-33                      11/3/00                       23              



 200027-34                      11/3/00                       35              



 200027-35                      11/3/00                       28"             

(Call the NRC operations officer for contact information).

Page Last Reviewed/Updated Thursday, March 29, 2012