ENS 48745
ENS Event | |
|---|---|
05:00 Feb 1, 2013 | |
| Title | Part 21 Report - Defective Raw Material Used to Manufacture Valve Stems |
| Event Description | Dresser-Rand is reporting that one of its vendors supplied annealed material instead of the specified heat-treated material. Dresser-Rand used the defective raw material to manufacture valve stems for Terry Type Emergency Feedwater pump drive turbines. Dresser-Rand has verified that the annealed material is not acceptable for the finished product.
The two customers (Wolf Creek Nuclear Plant and Callaway Nuclear Plant) that received the affected parts have been notified of this issue and have confirmed that the components in question are not in service at their facilities. The remaining material and affected parts have been quarantined at the Dresser-Rand plant in Wellsville, NY. All questions should be addressed to: Joe Menichino Manager, Navy/Nuclear Product Engineering 37 Coat Street Wellsville, New York, 14895 Phone: (585) 596-3406 jamenichino@dresser-rand.com
The following was excerpted from a facsimile received from Dresser-Rand: DESCRIPTION OF DEFECT OR NON-COMPLIANCE Specific designs of steam turbine control valve stems are made from heat treated ASM 5663M Inconel Bar raw material. Certifications associated with heat numbers of certain inventory of this material indicate that the material vendor incorrectly supplied material in an annealed condition (AMS 5662M). POTENTIAL SAFETY HAZARD OR NON-COMPLIANCE Valve stems are used to control steam turbine speed and power. The valve stems must be free to move within the guiding assembly during operation. Stems are made using materials that have the correct material properties to reduce the risk of failure. The use of inconel raw stock in an annealed condition is unacceptable for steam turbine valve stems due to the risk of unacceptable wear and strength characteristics which could lead to sticking or tensile failure in the mating guide bushings within the valve assembly. ADVICE TO EFFECTED CLIENT RELATED TO THIS REPORT For those affected sites identified, locate and return the material to Dresser-Rand immediately. Affected facilities include Point Beach, Clinton, Wolf Creek, Cooper, Callaway, San Onofre, and Prairie Island. Notified R1DO (Dentel), R3DO (Dickson), R4DO (Powers), and the Part 21 Group via email.
The following was excerpted from a facsimile received from Dresser-Rand: DESCRIPTION OF DEFECT: This is an addendum to Part 21 Reports Log# 2013-008-00 and Log# 2013-008-01. Another Vendor certification has been discovered for valve stem material that indicates the annealed condition-lnconel was supplied in lieu of the heat treated that is specified. ENGINEERING EVALUATION & RECOMMENDATIONS: 1- Complete review of all Vendor certification for this material to make certain no more. Discrepant material was used in the manufacture of these stems. 2- Identify all DR part numbers that were made using the affected heat numbers. 3- Notify affected customers and recall non-compliant parts. Potential Affected Part Numbers: 800777-001 Rev. NA 800768-701 Rev. A 800768-702 Rev. A 800858-001 Rev. E 800740-701 Rev. A 800746-001 Rev. B 800739-001 Rev. NA 800743-001 Rev. A 801061-701 Rev. A 800741-701 Rev. B 800744-001 Rev. NA 800745-001 Rev. NA 800748-001 Rev. A 800742-001 Rev. B Notified R1DO (DeFrancisco), R3DO (Kunowski), R4DO (Hagar), and the Part 21 Group via email.
The following information is excepted from a facsimile provided by Dresser-Rand: Specifications for valve stems provided to Palo Verde (Part Number W800743-001), Tihange 2 (Part Number W800746-001), Catawba (Part Number W800746-001), and Davis Besse (Part Number (W800746-001) call for the material to be heat treated AMS 5663M Inconel Bar. Certifications associated with another heat number of material indicate that the vendor supplied material in an annealed condition (AMS 5662M). The lower mechanical properties of the AMS 5662M could lead to shorter operating life for these stems. The material certification for all Inconel valve stems has been reviewed back to the first Inconel stem made by Dresser-Rand. No new corrective actions were deemed necessary. The four sites listed above should locate and return the valve stems immediately to Dresser-Rand for evaluation. Notified R2DO (Vias), R3DO (Passehl), R4DO (Gepford), and the 10CFR Part 21 Group via email. |
| Where | |
|---|---|
| Dresser-Rand Wellsville, New York (NRC Region 1) | |
| Organization: | Dresser-Rand |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+275.87 h11.495 days <br />1.642 weeks <br />0.378 months <br />) | |
| Opened: | D. G. Martin 16:52 Feb 12, 2013 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Apr 1, 2014 |
| 48745 - NRC Website | |
Dresser-Rand with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 541022019-06-05T04:00:0005 June 2019 04:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect, 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component En Revision Imported Date 10/14/2019 ENS 487452013-02-01T05:00:0001 February 2013 05:00:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 Report - Defective Raw Material Used to Manufacture Valve Stems 2019-06-05T04:00:00 | |