IR 05000352/1982014
| ML20028D284 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 12/07/1982 |
| From: | Bettenhausen L, Finkel A, Plisco L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20028D282 | List: |
| References | |
| 50-352-82-14, NUDOCS 8301170287 | |
| Download: ML20028D284 (7) | |
Text
{{#Wiki_filter:.- _ _ - ___.
. . - - - - _ _ _ . _ -. _ - = _ - _ _. . _ _ _
. . '
. , ! U. S. NUCLEAR REGULATORY COMMISSION , !
REGION I
Report No. 50-352/82-14 Docket No. 50-352 , License No. CPPR-106 Priority -- Category B ' Licensee: P_hiladelphia Electric Company 2301 Market Street I Philadelphia, Pennsylvania 19108 Facility Name Limerick Generating Station, Unit 1 I Inspection At: Limerick, Pennsylvania Inspection Conducted: November 1 - 5, 1982 i Inspectors: /.'2,.- 7 - P 2 - . AT. Finkel, Reactor Engineering Inspector date j
I kEt, ~ 1dk~- /2 7 S2-- ' . ] L lisco, Reactor Inspector ' d'..e i gM[[ W7!D Approved by: _L. H. Bettenhausen, Acting Chief, Plant cate , i Systems Section, DETP
Inspection Summary: Unit 1 Inspection on November 1 - 5, 1982 (Report No. 50-352/82-14) i Area Inspected: A routine, unannounced irispecticn of activities associated with
the installation of electrical cables; raceway, motor, motor control centers;
quality record review; and inspector follow-up of previously identified items.
The inspection involved 72 hours on site by two region-based inspectors and eight hours of in-office review by one inspector.
! Results: No violations were identified.
. ! - 8301170287 830103 PDR ADOCK 05000352 ' O PDR _ - _ . - - - .. . . . . _. . .. .. _ _.-- - -.. -
. _. - _.. . - _.
. __ - ._. __ -.- _ _. - . . . I Details 1.
Persons Contacted Philadelphia Electric Company D. T. Clohecy, Quality Assurance Engineer
, J. M. Corcoran, Field Quality Assurance Branch Head
' J. R. Goodbred, Quality Assurance Engineer
P. Naugle, Construction Engineer
P. K. Panlides, Quality Assurance Manager
! Bechtel Power Corporation , J. H. Colker, Assistant Project Field Engineer
R. A. Lanemann, Project Electrical Superintendent
J. L. Martin, Lead Systems Quality Assurance Engineer
K. Powers, Project Field Engineer
K. L. Quinter, Assistant Project Field Quality Control Engineer
,
M. Schlage, Mechanical Engineer
D. Shaw, Assistant Project Field Engineer
j K. G. Stout, Project Field Quality Control Engineer
D. C. Thompson, Assistant Project Field Quality Control Engineer
United States Nuclear Regulatory Commission ! S. K. Chaudhary, Senior Resident Inspector
- Denotes those present at exit meeting 2.
Status of Previously Identified Items (CDR-82-00-06) Limitorque Valve Motor Operator Deficiencies.
The inspector witnes-
l sed the replacement of wires, parts, and lubricant on the Limitorque i Type SMB-0 and SMB-4 Valve Motor Operators as described in the i Limitorque Rework Program Procedure 8031-FM-4, Revision 3, dated ) October 28, 1982. This procedure (8031-FM-4) outlines the work , ! practice and cleanliness control that the licensee is using during ) the rework program for all safety-related Limitorque Motor Operators
at the Limerick Generating Station. The inspector expressed his l concern to the licensee regarding the quality of workmanship and the unqualified parts found during the licensee rework program on the Limitorque Valve Motor Operators types SMB-0,00,000 and 1, 2, 3, 4.
The inspector verified that the deficiencies identified in the licensee's letter to the NRC dated December 29, 1981, were common in nature and did occur in all types of Limitorque Valve Motor Operators
at the Limerick Generating Station.
Common types of deficiencies identified by the licensee in the Limitorques were: -. - - - - - _ .- . - - - - -. - -. - - . - -
.. .. . .
J
-- Cracked or overdrilled limit switch rotors, -- Loose contact screws on torque switches, Improper attachment of terminal lugs to wires, -- -- Disconnected and improperly routed wires, and -- Unqualified splices in wiring.
The above are just a few of the deficiencies identified with the Limitor-ques.
The modification program that the licensee is performing should correct ! the conditions that have been identified.
No violations were identified.
3.
Facility Tour The inspector observed work activities in progress, completed work, and plant status in several areas of the plant during the general inspection of Unit 1.
The inspector observed the proper in place storage of motor control centers, switchgear, electrical penetrations, raceways, and the diesel generators and support equipment. Quality Control inspectors were
observed performing instrumentation tubing inspections, as well as megger testing of 600 volt power cables.
Particular note was taken regarding the rework program of the Limitorque Valve Motor Operators that was being performed by the licensee at the Unit 1 site. The replacement of unquali-fied components in the motor operators was inspected by the inspector j during the rework program the licensee was performing. The inspector determined that the assembly techniques used by the technicians appeared to comply with acceptable methods used in industry and followed the established procedures.
(Reference: procedure FM-4 entitled, "Limitorque l Rework Program and Supplemental Technical and Maintenance Instruction").
No violations were identified.
4.
Instrument Installation The inspector examined the installation of instrument sensing lines throughout the plant to verify that the instrument lines were being , l installed in accordance with Drawing No. M-830, " Instrument Installation l Details." The inspector found that the sensing lines had the approp-l riate, continuous slope to be kept full or free of liquid.
Physical l separation and seismic supports were also examined for compliance with drawing requirements.
No violations were identified.
I
I . - _. .- -. - - .. - - - -- . - -. _ _ _ _, _ _ - - - -
. .
5.
Containment Penetrations , During inspection of the containment electrical penetrations, the inspec-tor observed that penetration JX 103A on elevation 283 had zero reading on its pressure gauge.
The licensee's NCR 4418 identified the problem as a broken " tube to the gauge.
The Conax penetration has been qualified with or without pressure; the loss of pressure will not affect the pene-tration. The l'censee has a letter from the supplier (Conax) stating that pressure loss will not affect the quality of the penetration.
The inspec-tor verified that the design of the Conax penetration does not require inert, pressurized gas.
(Reference: IEB79-01 report).
No violations were identified.
6.
Electrical Installation Testing The inspector witnessed the megger testing of power cables No. 1ABZ0133 phase A, B, and C.
These cables are from the 480 volt switchgear 0114LC which supplies power to Spray Pord Area Motor Control Center (MCC), Reactor Area MCC, Diesel Generator Area MCC, and other loads.
The megger testing of 1000 volts for one minute indicated a short on the A phase cable between the 480 volt switchgear and the 1A diesel generator room.
The licensee suspected test equipment problems and planned to re-test the cable.
The inspector stated that the NRC Resident Inspector would review this test when performed.
No violations were identified.
7.
Electrical Cable and Termination Records Review The inspector reviewed pertinent work and quality records for safety-related cables, raceways, and equipment to determine whether the records reflect work accomplishments consistent with NRC requirements and licensee commitments in the area of inspection, termination, and testing.
Documents reviewed for this determination include: -- Job Rule (JR)-E-1, Revision 13, " Insulation Resistance Testing."
-- Job Rule (JR)-E-10, Revision 11, " Permanent Plant Cable Installation and Termination" -- Wire and Cable Notes and Details, Drawing No. E-1412.
-- Conduit and Cable Tray Notes, Symbols and Details, Drawing No.
E-1406.
-- EE11.2, Revision 4, " Procedure to Inspect and Test 480 VAC Load Centers."
. - I
,
EE11.1, Revision 4, " Procedure to Inspect and Test Medium Voltage, -- Metal Clad Switchgear.
EE11.4, Revision 3, " Procedure to Inspect and Test Medium Voltage -- Motor Circuits."
No violations were identified.
8.
Electrical Components Review of Quality Records The inspector reviewed quality records relative to electrical components and systems to ascertain whether these records reflect work accomplishment consistent with NRC requirements and licensee commitments.
The following records were reviewed: . - Quality Control Inspection Record (QCIR) ICA11710A1, #1CA11710AZ,
- 1CB51719A-2, #1CB51721A-2, #1CB51723A-2, #1CA117038-2 and #1BQ067A-2 Quality Control Instruction Job No. 8031, PQCI 8031/E-5.0 Rev. 6,
- " Cable Terminations."
- Open Non-Conformance Status Report - Supplier Document Review Packages 4" HBC-GT-M0-11-107, 6" HBC-GT-M0-11-132C, and 6" HBC-GT-M0-11-134C ' Receipt Inspection Documents QCIR P10ZCC-SF-3378 and QCIR P10ZCC- - SF-2779 These records were in conformance with established procedures and reflect-ed work accomplishment consistent with the applicable requirements. The receipt inspection documents confirmed that the required material charac-teristics, performance tests, and environmental qualifications were met.
The cable termination and cable pull recoros and quality control inspec-tion records reviewed confirmed that specified components were installed as specified, and the required inspections were performed.
No violations were identified.
9.
Non-Conformance Records The inspector randomly selected five nonconformance reports (NCR) relative to cables, terminations, and raceways to ascertain whether records are current, legible, complete, reviewed, and readily retrievable. Also, the records were reviewed to ensure the conformances were adequately describ-ed, included the status of corrective actions, and reflected that approp-riate action taken.
, -- -.. -. - - - - .. _..
. _. -- - - - -_ _ . , .
The following documents were reviewed: Project Special Provisions Notice SF/ PSP G-3.1, Rey, 8, Job No. 8031, - " Control of Non-Conforming Items."
Open Non-Conformance Status Report (Biweekly) - t l - NCR 5795, " Raceway - Separation Violation."
l - NCR 5785, " Conduit - Separation Conflict."
- NCR 5796, " Raceway - Separation Violation."
- NCR 5931, "RPS Cable - Bend Radius Violation" - NCR 6021, "ESS Cable - FCCR Not Incorporated."
The above separation items are part of the construction phase of the program.
The inspector did not find a generic separation problem in this review.
No violations were identified.
10. Quality Assurance Aedit Reports The inspector randomly selected Quality Assurance audit reports associated ' with electrical and instrumentation installation to ascertain whether the records confirmed that the required audits were being performed and that deficiencies identified during the audits were corrected and documented.
The following audits were reviewed: - I-005, " Storage of Instrumentation."
' - I-006, " Instrumentation Inspection and Surveillances."
- I-011, "HVAC Instrumentation Controls" - E-142, "RHR Pump Motors - Receiving Inspection."
- E-148, " Cable Installation."
, - E-157, " Raceway Cable Protection."
The audits reviewed were of adequate scope and corrective action for ' identified deficiencies was being completed in a timely manner and such that repetition of the deficiency and similar deficiencies would be , precluded. The inspector sampled several corrective action completions with no deficiencies noted.
No violations were identified.
_ _ _ _ - - - _ -_ ____ . - -. . . , _ _. - - __ -
.
11.
Exit Interview The inspector met with the licensee representatives denoted in Details (paragraph 1) at the site on November 5, 1982, and summarized the purpose and scope of the inspection findings.
The inspector also stated his concern that the configuration of the delivered Limitorque Valve Motor Operators did not appear to meet the drawings that were supplied by the vendor.
(Reference paragraph 2 of this report). }}