United States Nuclear Regulatory Commission - Protecting People and the Environment

General Information or Other Event Number: 37116
REP ORG: INGERSOLL-DRESSER PUMP COMPANY NOTIFICATION DATE: 06/26/2000
LICENSEE: INGERSOLL-DRESSER PUMP COMPANY NOTIFICATION TIME: 16:30[EDT]
CITY: HUNTINGTON PARK REGION: 4 EVENT DATE: 06/26/2000
COUNTY: STATE: CA EVENT TIME: [PDT]
LICENSE#: AGREEMENT: Y LAST UPDATE DATE: 06/26/2000
DOCKET: PERSON ORGANIZATION
GAIL GOOD R4
VERN HODGE NRR
NRC NOTIFIED BY: BILL SHAFER
HQ OPS OFFICER: STEVE SANDIN
EMERGENCY CLASS: N/A
10 CFR SECTION:
CCCC 21.21 UNSPECIFIED PARAGRAPH

EVENT TEXT

PART 21 REPORT INVOLVING A DESIGN DEFECT IN A SPLIT RING RETAINER (DRAWING B65573)

"This report is written to satisfy the requirements of paragraph 21.21.4. The numbering of the information given here correlates with the numbering in 21.21.4: (i) Bill Shaffer

Director of Operations

Ingersoll-Dresser Pump

5715 Bickett Street

Huntington Park, CA 90255

(ii) Split Ring Retainer

Drawing B65573 Rev.

(iii) Ingersoll-Dresser Pump

5715 Bickett Street

Huntington Park, CA 90255

(iv) The Split Ring Retainer (Drawing B65573 Rev. 0) specifies a drilled and counter bored bolt hole diameter too large to allow the bolting to secure this retainer in its intended position. Based on an evaluation of this condition, it has been determined that this design defect could allow the subject Split Ring Retainer and other adjacent parts including the Split Ring Retainer bolting, split ring and pressure reducing sleeve to move out of position. This could result in a seal failure or a catastrophic pump failure.

(v) IDP Huntington Park was informed of this defect on 6-22-00.

(vi) Three defective split ring retainers were manufactured. The location of all three are known to IDP-HP. Three were shipped to STP Nuclear Operating Co. One of the defective split ring retainers was installed and put into service at STP.

(vii) On June 23rd Dennis Stark of STP was notified of the defective split ring retainer and that it could result in a catastrophic failure. Replacement split ring retainers with corrected design will be shipped by June 30, 2000.

(viii) IDP-HP advised Dennis Stark of STP that the pump with the installed defective split ring retainer should be taken out of service."

Page Last Reviewed/Updated Thursday, March 29, 2012