IR 05000483/1979015
| ML19296C285 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 01/14/1980 |
| From: | Cordero Z, Danielson D, Livermore H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19296C283 | List: |
| References | |
| 50-483-79-15, NUDOCS 8002250510 | |
| Download: ML19296C285 (4) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No.
50-483/79-15 Docket No.
50-483 License No. CPPR-139 Licensee: Union Electric P.O. Box 149 St. Louis, MO 63166 Facility Name:
Callaway, Unit 1 Inspection At:
Callaway, County, M0 Inspection Conducted: December 17-20, 1979 sbWas W
Inspectors:
H. Livermore
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dt Z. Cordero basip
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Approved by:
D. H. Danielson, Chief
'// d[fo Engineering Support Section 2 Inspection Summary Inspection on December 17-20, 1979 (Report No. 50-483/79-15)
Areas Inspected:
Surveillance inspection of the reactor vessel (internally and externally), the lower internals assembly, and some twenty safety-related components, (pumps, motors, heat exchangers, and tanks). The inspec-tion involved 40 inspector-hours on site by two hTC inspectors.
Results: No items of noncompliance or deviations were identified.
510 8003250
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DETAILS Persons Contacted Union Electric Company (UE)
- W. H. Weber, Manager, Nuclear Construction
- R. L. Powers, Supervising Engineer, QA
- R. Veatch, QA Assistant Engineer
- J. V. Laux, QA Assistant Engineer M. I. Doyne, General Superintendent J. Gearhart, Quality Assurance Engineer Other Personnel
- J. A. Holland, PQAM, Daniel Construction
- W. L. Sykora, APM, Daniel Construction
- J. R. Cook, QC Manager, Daniel Construction
- C. R. Gardner, PPE, Daniel Construction
- H.
J. Potter, Authorized Nuclear Inspector
- W. Hansen, USNRC, Resident Inspector E. D. Mc Farland, CEM, Daniel Construction C. Kiehn, Area Superintendent, Daniel Construction 0. Olsen, Preventative Maintenance, Daniel Construction R. Roarke, Maintenance Technician, Daniel Construction The inspectors also contacted and interviewed other licensee and contractor personnel.
- Denotes those attending the exit interview.
Functional or Program Areas Inspected 1.
Observation of Reactor Vessel and Lower I,ternals The inspectors performed a walk through surveillance of the Lower Internals Assembly. The diffuser and core support plates were clean and free of tools and debris. The core plate pins were protective capped and the general area was clean. Personnel control in the area was adequate and was in the process of improvement.
The inspectors performed a surveillance of the inside of the Reactor Vessel. Entrance control appeared to be adequate with the use of an entry log and a confined spaces permit. The vessel side wall had some
" chewing tobacco like" brown stains in two places. The substance appeared to have originated from a previous bolt-hole cleaning opera-tion. The licensee took action to identify the substance and clean it off the vessel. With the exception of one pipe, all reactor coolant-2-
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loop piping had been welded to the vessel. QC Inspection had not been completed on all welds.
One pipe-to-vessel weld with rust, metal discoloration and a pronounced edge lip was brought to the licensee's attention. Action for QC followup inspection was initiated by the licensee.
On a general nature, the inspectors noted some nozzle sur-face rust streaks and an accumulation of grinding dust and debris in one coolant loop. The licensee took action to clean up the rust and clean out the coolant loops.
The inspectors performed a surveillance of the underside (outside) of the Reactor Vessel. The instrumentation thimble tubes were covered and the outside vessel surface was free and clean of any oil or residue.
A visual rust was prevalent over a wide area, some was surface and some appeared to be breaking through from underneath the black surface coating on the bottom of the vessel. The inspectors recommended that the licensee perform further investigation into the extent of the rusting. The licensee took action with a Quality Memo requesting an engineering evaluation to determiae extent and effect.
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Observation of Safety Related Component Installation The inspectors executed a surveillance of the installation of eleven pumps (and motors), seven heat exchangers, and two boric acid tanks of the CVCS, RHR, CCW, Containment Spray, and Safety Injection Systems.
The operation of electrical heaters was verified on three pump motors.
Maintenance operation appeared to be satisfactory. A general inspec-tion was performed on the component installation enclosures and sur-rounding area. Most enclosures were damaged and in disarray. The licensee took immediate corrective action the same day. The inspectors noted the presence of open containers of dustable desiccant in and out of the component enclosures. The material is poison and of a low flash point. The licensee took immediate short range action by moving all desiccant inside the enclosures and by re-enclosing the assemblies with new plastic sheeting. Long range action has been instigated to obtain desiccant enclosed in bags. The licensee also followed recom-mended inspector action and will investigate the constituents of the desiccant to insure there are no elements present that might harm stainless steel. Guidelines of Regulatory Guide 1.38 will be followed and the results coordinated with the NRC resident inspector.
The inspector questioned licensee representatives regarding the conduct of audits performed during the year pertaining to Safety Related components. The inspector reviewed the reports of two audits conducted during the period pertaining to material control up to and including receipt inspections; material storage up to and including maintenance and identification of material and issuance. The report indicated that the licensee had identified one item which required corrective action. The audit reports appeared to be satisfactory.
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Unresolved Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items, items of noncompliance, or deviations. There were no unresolved items disclosed during this inspection.
Exit Interview The inspectors met with licensee representatives (denoted in the Persons Contacted paragraph) at the conclusion of the inspection of December 20, 1979. The inspectors summarized the scope and the licensee acknowledged the statements by the inspectors noted in previous paragraphs.
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