ML17272A896

Final Deficiency Rept Re Pipe Whip Restraint QA Records & Fabrication Deficiencies.Documentation Deficiencies Have Been Identified.All Restraints Will Be Reinspected by Ultrasonic Magnetic Particle & Visual Methods

ML17272A896
Person / Time
Site:	Columbia
Issue date:	03/21/1980
From:	WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
Shared Package
ML17272A895	List: ML17272A894 ML17272A896
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8004020305
Download: ML17272A896 (2)

Text

RH Engelken Nuclear Regulatory ission March ATTACHMENT Paqe l of 2 Washington Public Power Supply System Nuclear Project No. 2 Docket Number 50-397, CPPR-93 REPORTABLE DEFICIENCY AND CORRECTIVE ACTION FOR PIPE WHIP RESTRAINTS OA RECORDS AND FABRICATION DEFICIENCIES of Deficienc

'ature Deficiencies discovered in Pipe Whip Restraint documentation have been previously ident'ified in detail. Some of the more significant were:

l. Improper welder qualification

2. Weld procedures not properly qualified

3. Incomplete and/or conflicting NDE records

4. Use of filler metal other than that specified in the weld procedures In addition, visual, ultrasonic, and magnetic particle reinspection of the Pipe Whip Restraints shows that weld deficiencies, such as lack of penetration, undercut, inclusions, linear defects, cold lap and lack of fusion, do exist.

Safet Im lications If the defects were left uncorrected and were subjected to design loads, as a result of a pipe rupture, the weld defects could propagate causing the Pipe Whip Restraints to fail. The failure of the Pipe Whip Restraints could allow the ruptured pipe to whip and damage surroundinq safety related components and equipment. This, in turn, would adversely affect the safety of the nuclear power plant.

Corrective Action Corrective action has proceeded as planned, and consists of the following basic steps:

80oe.0s0 ~~

~H Engel ken Nuclear Regulatory ission

, Narch ATTACHMENT Page 2 of 2

l. A comprehensive review of existing data packages for the individual Pipe 'Whip Restraints has been conducted.

Documentation deficiencies have been identified.

2. A field sample of Pipe Whip Restraints have been reinspected per original inspection criteria. This reinspection has affirmed that prior inspection documentation is unreliable and that unacceptable Pipe Whip Restraint weld deficiencies exist.

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3. A program has been developed to completely reinspect all Pipe Whio Restraints by ultrasonic, magnetic particle, and visual methods.

4. The gA records produced during this reinspection will become the NDE documentation of record on the Pipe Whip Restraints.

5. Weld deficiencies noted during this reinspection are being documented on Nonconformance Reports (NCRs) for evaluation and disposition in accord with established gA procedures.

I

6. Discrepancies of a documentary nature which can affect Pipe

'Whip Restraint design or structural characteristics (e.g.,

use of weld rod type other than required by procedure) are also being documented on NCRs for evaluation and disposition.

7. Pipe Whip Restraints will be reworked or replaced and other appropriate actions taken, as required by NCR, to assure structurally adequate restraints.

8. An approved procedure has been issued to govern the Pipe Whip Restraint reinspection and rework program.

Corrective action is ongoing at the site and is available for NRC Region V inspection review.