IR 05000370/1980009
| ML19338D972 | |
| Person / Time | |
|---|---|
| Site: | Mcguire |
| Issue date: | 07/25/1980 |
| From: | Conlon T, Gibbons T, Merriweather N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19338D955 | List: |
| References | |
| 50-370-80-09, 50-370-80-9, NUDOCS 8009240276 | |
| Download: ML19338D972 (4) | |
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION o
.E REGION 11
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e 101 MARlETTA sT., N.W., SUITE 3100 o
ATLANTA, GEORGIA 30303
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Report No. 50-370/80-9-Licensee: Duke Power Company 422 South church Street
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Charlotte, NC 28242 Facility Name: McGuire License No. CPPR-84 InspectionatMcfuiresitenearCharlotte,NorthCarolina
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Inspectors:
T. D. Gibbons Ddte Signed
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. !Ierriweather
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Date Signed Approved by:
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T. E. Conlon7Section ' Chief, RCES Branch Date Sign'ed SUMMARY Inspection on June 24-27, 1980 Areas Inspected This routine, unannounced inspection involved 54 inspector-hours onsite in the areas of electrical cables and terminations work and work activities; instru-mentation cables and terminations work and work activities.
Results Of the two areas inspected, three items of noncompliance were found in two areas (infraction - inadequate procedures for the inspection of safety-related cable terminations - paragraph 6; infraction - electrical test program paragraph 6; infraction - failure to follow procedures for cable installation paragraph 6).
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DETAILS 1.
Persons Contacted
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Licensee Employees
- R. H. Ledford, Quality Assurance Engineer
- J. M. Hoover, Electrical Engineer
- T. E. Touchstone, Senior Construction Engineer H. K. Burriss, General Superintendent
- E. B. Miller, Senior QA Engineer
- M. S. Starnes, Senior QC Engineer
- Attended exit interview 2.
Exit Interview The inspection scope and. findings we'e punmarized on June 27, 1980 with those persons indicated in Paragraph 1 3bove. The items of noncompliance
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identified in paragraph 6 were discussed in depth.
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Licensee Action on Previous Inspection Findings Not inspected.
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Unresolved Items Unresolved items are matters about which more information is required to determine whether they are acceptable or may involve noncompliance or I
deviations.
New unresolved items identified during this inspection are i
discussed in paragraph 5.
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Independent Inspection Effort
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The inspector noted a bus intertie between the 125V DC bus powering safety channels 1 and 3; Channels 2 and 4.
The inspector questioned the control of the breakers during normal operation to assure independance of each battery as required by Safety Guide 6.
The licensee could not identify the control which would prevent inadvertot paralleling of the batteries. This item is identified as unresolved item 80-09-04, Control of the 125V DC bus intertie.
The inspector questioned the calibration of crimping tools. The licensee stated that there is no formal program.
The craft have Go-No-Go gages which are used to check the tools. This etecking of tools is not verified.
by QC. This is identified as inspector followup item 80-09-06 " Crimping Tool Verification".
-Within the areas examined, there were no items of noncompliance identified.
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6.
Electrical (Cables and Terminations I) - Observation of Work and Work
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Activities (Unit 2)
The inspectors selected the following safety-related cables for examination:
2*W502, 2*W503, 2*NV528, 2*NM510, 2*NM504, 2*NV527, 2 RN681 and 2*NV538 The above cables were examined to assure that the requirements of the PSAR and QAM were complied with in the areas of cable identification, type, terminations, location, routing, protection, separation, raceway supports, loading, construction procedures, inspection, nondestructive tests and nonconformance control.
The as-built configuration was compared to the latest app -ved cable ins'.allation specifications, termination drawings and work records.
The inspectors examined cable terminations in motor operated valves 2*NV141A, 2*NV142B, 2*W1A, 2*W33A, 2*NM191B and 2*NM201A. The inspector observed that one conductor on terminal no.
9 in motor operated valve (MV) 2*NV142B was loose and that 6 conductors terminated in MOV 2*NM191B could be moved easily by hand. The licensee's inspection procedure M41B
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Serial Fo. 15 Rev. 4 " Cable Termination" does not require inspection of terminations and connections for remote devices having one or two cables terminated inside the device. The inspection procedure does not require removal of termination box covers, therefore only a visual check can be made of external attributes which is inadequate.
Duke Power Company's Topical Report 1A, Table 17.0-1 commits McGuire Nuclear Plant to conform to Regulatory Guide 1.30 which endorses ANSI N45.2.4.
Paragraph 5.1.1 of ANSI N45.1.4 st'ates in part, " inspections shall include... verification of:
(1) tightness of connections and fastenings (2) termination This is an infraction and is identified as 370/80-09-01, Inadequate proce-dures for the inspection of safety-related cable terminations. During the examination of cable terminations in the MOVs listed above, the inspectors observed tha' the MOV operator housings for valves 2*NV141A and 2*NV142B had 6 inches horizontal seperation; and the horizontal distance between valves. 2*W1A and 2*W33A was approximately 6-8 inches. The electrical separation requirements for the redundant train cables were maintained up to the motor operator termination boxes. The inspectors questioned the licensee about the separation requirements for redundant MOV operator l
housings.
The licensee is reviewing the separation requirements for redundant MOV operator housings This item will be identified as inspector followup item 370/80-09-03, Separation requirements for redundant safety-related valve operator housings. While examining the terminations in MOVs, i
the inspectors observed that construction was using three different methods to terminate electrical conductors inside Rotork valve operators.
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l conductors were terminated using long barrel nuts, short barrel nuts and hex nuts. The licensee stated that the termination methods were approved
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by the vendor.
The inspectors requested the vendor documentation that
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identified the three termination methods as acceptable.
This item is identified as inspector followup item 370/80-09-02, Rotork terminations.
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The inspectors questioned the licensee concerning electrical tests performed during construction. The licensee stated that prior to energization the electrical craft make a circuit test and red line a drawing. This test is not covered by any procedure, is not documented and ther,e is no QC inspection.
ANSI N45.2.4, paragraph 5.2 states:
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construction activities
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shall include test performed in accordance with written test procedures".
This is an infraction and is identified as 370/80-09-05, Electrical test program.
While verifying the routing of the cables identified above, the inspector observed a 1 inch diameter yellow train cable at junction point 8935 which violated the minimum bending radius. Inspection Instruction M41B, Serial 14 requires a minimum bending radius of 8 times the outside diameter in inches.
The cable bending radius was measured at 10 inches by the QC inspector. The cable had been inspected during installation. This is an infraction and is identified as 370/80-09-07, Failure to follow procedures for cable installation.
Within the areas examir.
three items of noncompliance were identified.
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Instrumentation (Cable id Terminations) Observation of Work and Work Activities The inspector selected the following nine instrumentation cables 2*EIA 517, 2*EIA 518, 2*EIA 519, 2*EIA 520, 2*EIA 521, 2*EIA 522, 2*FW 542, 2*FW 543, and 2*FW 544. The cables were examined to assure that the requirements of the PSAR,and QAM were complied with in the areas of storage, handling,
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identification, nonconformance control, specified material, inspection, procedures, size, and type of cable, wireway seals, termination components, location, routing, separation, cableway identification, physical loading
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and terminations.
The noncompliances discussed in Paragraph 6 " Electrical Cables and Termina-tions are also applicable to this paragraph.