IR 05000400/1982027
| ML20027A932 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 08/23/1982 |
| From: | Conlon T, Merriweather N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20027A931 | List: |
| References | |
| 50-400-82-27, 50-401-82-27, NUDOCS 8209160168 | |
| Download: ML20027A932 (5) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION y~
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REGION 11
.. g 101 MARIETTA S f., N W., SUITE 3100
ATLANTA GEORGIA 30303
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Report Hos. 50-400/82-27 and 50-401/82-27 Licensee: Carolina Power and Light Company 411 Fayetteville Street
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Raleigh, NC 27602 Facility Name:
Shearon Harris Docket Nos. 50-400 and 50-401 License Nos. CPPR-158 and CPPR-159 Inspection at Shearon Harris site near Raleigh, North Carolina Inspector: j. [ M w d e I~~d 8-M N. Merrideather
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Date Signed CW!W S--23-72-Approved by T. E. Con ~1on, Section Chief Date Signed Engineering Inspection Branch Division of Engineering and Technical Programs SUMMARY
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Inspection on August 3-6, 1982 l
Areas Inspected
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This routine, unannounceo inspection involved 25 inspector-hours on site in the areas of electrical components and systems work and work activities, review of QA implementing procedures for cable tray installation, and followup on previous inspection item.
Results i
Of the three areas inspected, no violations or deviations were identified.
8209160168 820826 PDR ADOCK 05000400 G
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REPORT DETAILS 1.
Persons Contacted Licensee Employees
- S. Smith, Vice President, Nuclear Plant Construction
- R. M. Parsons, Project General Manager
- G. L. Forehand, Director QA/QC
- G. M. Simpson, Principal Construction Specialist
- E. E. Willett, Resident Engineer, Mechanical
- A. Cockerill, Principal Electrical Engineer
- D. C. Whitehead, QA Supervisor
- L. T. King, Senior Engineer
- C. R. Osman, Principal QA/QC Specialist Other licensee employees contacted included construction craftsmen and QA/QC inspectors.
NRC Resident Inspector
- G. Maxwell
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on August 6,1982, with those persons indicated in paragraph 1 above. The licensee was informed of the inspection findings listed below. The licensee acknowledged the inspec-tion findings with no dissenting comments.
Inspector Followup Item 400/82-27-01, Review the licensee's program /proce-dures for onsite modification of equipment, paragraph 5.
Inspector Followup Item, 400/82-27-02 and 401/82-27-01, Inspection of cable tray splice plate bolts, paragraph 6.
3.
Licensee Action on Previous Enforcement Matters (0 pen) Unresolved Item (400/82-15-01): Verify that process control cabinets are seismically qualified as installed. Field Change Request No. M-485, R1 was issued to provide continuous support for the base of the process control cabinets by adding more shims and grouting between the shims. However, this did not address the inspector's concern as to whether or not the equipment, as initially installed, met the seismic requirements.
The licensee is working with Ebasco and Westinghouse to develop a model of the process cabinets to analyze what effect the downward forces will have in deforming the cabinets during a seismic event. Therefore, this item remains open.
Within the area inspected, no violations or deviations were identifie,
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4.
Unresolved Items Unresolved items were not identified during this inspection.
5.
Electrical (Components and Systems I) - Observation of Work and Work Activities (51053B) - Unit I a.
Documents Examined (1) Deficiency and Disposition Report (DDR) No. 1017, Modification of Vendor Equipment (2) Discrepancy Report No. M-288, Sill-Channel "J" Bolts and Nuts (3) Procedure No. TP-28, Inspection of Equipment Installation (4) Procedure No. WP-105, Installation and Inspection of Equipment (5) Drawing No. 2166-B-60, Sheet 17E (6) Drawing No. SD/B-B-0615, Sheet 1, R2 (7) DDR No.1031 (8) DDR No. 827 (9) Letter from Siemens-Allis to CP&L's Mr. V. Cox dated June 1,1982 b.
Field Inspection The inspector observed the craf t performing work on 6.9kv switchgear IB-SB.
The inspector observed 4 inch diameter holes being drilled through the tops of the 6.9kv switchgear panels for the installation of conduit fittings and, inside the cubicles some terminal blocks and internal wiring had been disconnected. Through discussions with field
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engineering the inspector determined that these modifications were not
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in accordance with the approved 0A program in that no engineering change notice or field change request had been issued for modifying the l
switchgear.
The licensee stated that the switchgear was designed for
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cable entry from the top but the vendor mounted some of the internal wiring in the way. The licensee was performing this modification based i
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on a letter from Siemens-Allis which allowed CP&L to move some of the
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cable bundles. While the NRC inspector was pursuing this matter, he later determined that the licensee was also pursuing this matter as a result of a routine QA surveillance which identified this problem. The licensee issued Deficiency and Disposition Report (DDR) No. 1017 on l
August 5,1982, stopping work on the panels until program / procedures l
were established for onsite modification of vendor supplied equipment, j
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The inspector identified this item to the licensee as followup item 400/82-27-01, Review the licensee's program / procedures for onsite modification of equipment.
Within the areas examined, no violations or deviations were identified.
6.
Review of Quality Assurance Implementing Procedures for Cable Tray Instal-lation (51061B) - Units 1 and 2 Documents Examined:
a.
Procedure TP-42, R3 Installation of Safety Related or Seismically Installed Electrical Raceways and Components b.
Procedure WP-203, Installation of Seismic Class I Electrical Cable Tray, Tray Supports, Conduit, Conduit Supports, Boxes, and Box Supports c.
Permanent Waiver (PW) No. AS-1673, Installation of Safety and Non-Safety Cable Tray d.
DR No. E-016, Torquing of Splice Bolts e.
DR No. E-017, Torquing of Splice Bolts The inspector reviewed the documents identified above to ascertain whether quality assurance plans, instructions, and procedures for cable tray instal-lation have been established; and whether the documents conform to the approved QA program and NRC requirements in the areas of handling and installation, inspection and testing, identification, and design changes.
The licensee issued PW No. AS-1673 in response to DR No. E-016 and E-017 concerning overtorquing of cable tray splice bolts. The problem is that the cable tray splice bolts were being overtorqued while trying to seat the bolts. The bolts have a larger diameter ribbed section to keep them from turning. PW-AS-1673 was dispositioned by site engineering to. allow existing splice bolts to be loosened and retorqued to design values of 25 foot-pounds.
In future installations, bolts can be overtorqued to 35 foot-pounds for seating the bolts, and then released and the bolt retorqued to design values.
The inspector interviewed engineers in the Harris Plant Engineering Section to review the justification for allowing bolts to be overtorqued. The inspector reviewed the " Stress and Strain" curves for the bolts used on cable tray splices and agreed with the recommended disposi-tion of PW-AS-1673 as being acceptable.
Later during this inspection the inspector was notified that QA/QC had observed the electrical craft torquing cable tray splice bolts with a cheater bar and a ratchet wrench. This was in violation of PW-AS-1673 because the torque being applied to the bolts was not known. Subsequently, the QA/QC Unit issued a stop work on all safety related cable tray installations.
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During review of procedure TP-42, R3 the inspector questioned the licensee concerning the design basis for sampling bolt torquing.
The procedure requires 10 percent or at least two fasteners for each connection be checked for torquing. The licensee has committed to issue a revision to the proce-dure to clarify the sampling program.
This item was identified to the licensee as inspector followup item 400/82-27-02 and 401/82-27-01, Inspec-tion of Cable Tray Splice Plate Bolts. This item will remain open pending further review by Region II.
Within the area inspected, no violations or deviations were identified.
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