IR 05000250/1986048
| ML20210C809 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 01/09/1987 |
| From: | Blake J, Vias S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20210C749 | List: |
| References | |
| 50-250-86-48, 50-251-86-48, IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8702090461 | |
| Download: ML20210C809 (4) | |
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jp Etitj, UNITED STATES
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~ NUCLEAR REGULATORY COMMISSION
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101 MARIETTA STREET.N.W.
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ATLANTA. GEORGI A 30323
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. Report Nos.: 50-250/86-48 and 50-251/86-48 Licensee:
Florida Power _and Light Company 9250 West Flagler Street Miami, FL 33102
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Docket Nos.: 50-250 and 50-251 License Nos.: DPR-31 and DPR-41 Facility Name: Turkey Point 3 and 4 Inspection C e
c ber 15-19, 1986
/ f E7 Inspector
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e J. J.
ale, Section Chief Date Signed Eng n ring Branch Di is'on of Reactor Safety
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SUMMARY Scope: This routine, unannounced inspection on site was in the areas of licensee action on previous enforcement matters and seismic analysis for as built safety-related piping systems (IEB 79-14), safety-related pipe supports, base plate designs using concrete expansion anchor bolts (IEB 79-02).
Results:
No violations or deviations were identified.
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REPORT DETAILS 1.
Persons Contacted Licensee Employees
- C. Baker, Plant Manager
- 0. Grandage, Operation Superintendent
- R. Hart, Licensing Engineer
- J. M. Mowbray, Juno Plant Engineering (JPE)
- J. Ferrare, Quality Assurance Other licensee employees contacted included engineers, technicians, and office personnel.
Other Organizations
- J. Gnecco, Teledyne Engineering Services, Site Engineer (JPE)
NRC Resident Inspectors D. Brewer, Senior Resident Inspector
- K. VanDyne, Resident Inspector
- J. MacDonald, Resident Inspector
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on December 19, 1986, with those persons indicated in paragraph 1 above. The inspector described the areas inspected and discussed in detail the inspection findings.
No dissenting comments were received from the licensee.
The licensee did not identify as proprietary any of the materials provided to or reviewed by the inspector during this inspection.
3.
Licensee Action on Previous Enforcement Matters (25528, 25529, 50090)
(Closed) Violation 250, 251/86-13-02, Inadequately Supported Piping.
This matter concerns two examples of imprcperly supported piping.
a.
The first portion included three sections of piping for the auxiliary feedwater pump lube oil coolers that were not supported in accordance with the hanger spacing requirement e
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This inspector held discussions with responsible licensee representa-tives and evaluated their response and corrective action. An investi-gation by the licensee for the cause of th'e finding has determined the following: the root cause of this condition was the improper installa-tion of supports controlled to the existir.g specifications.
The improper installations were made during the replacement of the auxiliary feedwater pump turbines in 1983. A functionality review was performed to determine operability of the system as it existed. The licensee has concluded that the system would function as designed during a single seismic event. A Non-Conformance Report NCR 433-86 was written to return the system to the FSAR seismic requirements for pipe supports.
b The second portion concerned the Safety related/Non-Safety related interface section of the lube water piping to the main condenser circulating water pump which was not supported in a manner to preclude d' mage to safety related piping.
a The inspector held discussions with responsible licensee representa-tives and evaluated their response and corrective action. An investi-gation by the licensee into this matter has indicated that this condition is the original plant installation. Since the subject piping is 2 inch nominal diameter, in the safety related portion, it would not have been included in the scope of the IE Bulletin 79-14 analyzed piping.
Additionally, the analysis of the 30" Intake Cooling Water (ICW) header did not include the 2" pipe since the effects of the line would not have impacted the 30" ICW analysis.
A functionality analysis was performed on the "as found" piping.
It was determined that the system would functicn as designed during a single seismic event. To return the system to the FSAR specifications, a code boundary anchor was designed to be installed downstream of the code class change.
To er.sure that no other potentially unsupported conditions exist in the auxillary feedwater system and other safety systems, the licensee has initiated a program to walkdown and generate as built drawings for 2 inch and under piping and instrument tubing associated with the systems not evaluated under the IE Bulletin 79-14.
This item is considered closed.
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Unresolved Items Unresolved items were not identified during the inspection.
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(0 pen) IE Bulletin 79-14, Seismic Analysis for As-Built Safety-Related Piping Systems (25529)
a.
Licensees' 79-14 Assessment and Discrepancies Evaluation The inspector held discussions with responsible licensee personnel on the topic of this bulletin. The licensee stated that an assessment was performed and documented in a Bechtel Power Corporation letter dated
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October 31, 1986. A review was performed concentrating on the original walkdown packages, training, walkdown teams, audit reports, Teledyne Technical Reports, correspondence, and field walkdowns of some of the discrepancies.
Thirty-nine discrepancies were discovered out of the 1200 pipe supports from the total pipe support population of 3557. A breakdown of the discrepancies indicated that 17 of these items were not related to the 79-14 walkdown program and the remaining 22 items are 79-14 related.
The licensee concurred that this provides addi-tional confidence in the reliability of the progran. FPL and Teledyne have evaluated the walkdown discrepancies and no functionality problem were identified.
b.
NRC Assessment of IE Bulletin 79-14 The inspector met with the responsible engineering personnel to set up the proposed inspection that would be necessary to assess the design, construction, and verification of IE Bulletin 79-14. The licensee was given a list of five stress analysis problems which encompass 17 piping isometrics.
The piping is in the Component Cooling System for Unit 3.
The Engineering group has agreed to assemble all the documentation listed below to facilitate the NRC review of all the documentation related to the isometrics chosen and to arrange for the proper QC personnel to be familiar with the areas chosen and assist in the verification of the walkdown.
Documentation Requested:
Copies (for stress problems requested)
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Piping Isometrics
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Piping stress analysis package (to be made available only.)
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All pipe support drawings (for given isometrics)
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