IR 05000275/1983012
| ML20023C447 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 04/05/1983 |
| From: | Carlson J, Kirsch D, Mendonca M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| Shared Package | |
| ML20023C436 | List: |
| References | |
| TASK-2.E.1.1, TASK-TM 50-275-83-12, 50-323-83-09, 50-323-83-9, NUDOCS 8305170339 | |
| Download: ML20023C447 (6) | |
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U. S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
REGION V
Report Nos. 50-275/83-12 and 50-323/83-09 Docket Nos. 50-275 and 50-323 License Nos. DPR-76 and CFPR-69 Licensee: Pacific Gas and Electric Company P. O. Box 7442 San Francisco, California 94120 Facility Name:
Diablo Canyon Units 1 and 2 Inspection at: Diablo Canyon Site, San Luis Obispo County, California Inspection conducted: March 6, 1983 through April 2, 1983 Inspectors:
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///f/ff g7/J. D. Ca rlson
'Da'te Signed Sr. Resident Inspector WYKN
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g M'.~ il. Kendonca 6 ate Signed Resident Inspector
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/,/ /S-/)fh Approved by:
D. F. ' Kirsch, Chief
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Reactor Projects Section No. 3 l
l Summary:
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Inspection from March 6, 1983 through April 2, 1983 (Report Nos. 50-275/83-12
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and 50-323/83-09)
Areas Inspected: Unit. No. 1: Routine, resident inspection of plant operations, surveillance testing, maintenance, and TMI task action plan items. The inspection involved 92 inspector-hours by two inspectors.
Unit No. 2: Routine, resident inspection of preoperational testing and results, plant tours, operator training and procedure reviews. The inspection involved 112 inspector-hours by two inspectors. The total inspection time involved 204 inspector-hours.
Results: No items of noncompliance or deviations were identified.
8305170339 830408 PDR ADOCK 05000275 G
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j DETAILS 1.
Persons Contacted
- R.
C. Thornberry, Plant Manager
- R.
Patterson, Plant Superintendent
- J.
M. Gisclon, Power Plant Engineer
- D.
B. Miklush, Supervisor of Maintenance
- J.
A. Sexton, Supervisor of Operations
- J.
V. Boots, Supervisor of Chemistry and Radiation Protection
- W.
B. Kaefer, Technical Assistant to the Plant Manager
- R.
G. Todaro, Security Supervisor
- R. T. Twiddy, Supervisor of Quality Assurance
- R. M. Luckett, Regulatory Compliance Engineer
- M. N. Norem, Lead Startup Engineer The inspectors also interviewed several other licensee employees including shift supervisors, reactor and auxiliary operators, maintenance personnel, plant technicians and engineers, quality assurance personnel and members of General Construction.
- Denotes those attending the exit interview on April 1, 1983.
2.
Operational Safety Verification During the inspection period, the inspectors observed and examined activities to verify the operational safety of the licensee's facility.
The observations and examinations of those activities were conducted on a daily, weekly or monthly basis.
On a daily basis, the inspectors observed control room activities to verify compliance with limiting conditions for operation as prescribed in the fa.cility Technical Specifications.
Logs, instrumentation, recorder traces, and other operational records were examined to obtain information on plant conditions, trends, and compliance with regulations.
Shift turnovers were observed on a sample basis to verify that all pertinent information on plant status was relayed.
During each week, the inspectors toured the accessible areas of the facility to observe the following:
a.
General plant and equipment conditions.
b.
Maintenance activities and repairs (See Paragraph 3).
c.
Fire hazards and fire fighting equipment.
d.
Ignition sources and flammable material control.
Conduct of selected activities for compliance with the licensee's e.
administrative controls and approved procedures.
f.
Interiors of electrical and control panels.
g.
Implementation of selected portions of the licensea's physical security plan, h.
Plant housekeeping and cleanliness.
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The inspectors talked with operators in the control room,and other plant personnel. The discussions centered on pertinent topics of general plant conditions, procedures, security, training, and other aspects of
the involved work activities.
No items of noncompliance or deviations were identified.
3.
Maintenance Maintenance activities on the AFW Turbine Steam Supply Valve Operator and the 480V breaker for pressurizer heaters were reviewed by the inspectors during the month. Observations by the inspectors verified that proper approvals were obtained, system clearance and tests of
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redundant equipment were performed, as appropriate, prior to conducting maintenance on safety related systems or components. The inspectors verified that qualified personnel performed the maintenance and used properly reviewed and approved maintenance procedures. Replacement parts were examined to verify the proper certification of materials, workmanship and tests.
During the actual performance of maintenance activities, the inspectors verified proper fire protection controls and housekeeping. Upon completion of the maintenance activity, the inspectors verified the component was tested prior to return-to-service.
No items of noncompliance or deviations were identified.
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4.
Surveillance i
Surveillance testing of containment pressure instrumentation was reviewed by the inspectors. Observations by the inspectors included
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verification that proper procedures were used, test instrumentation was calibrated, and that the tested system or component was properly removed l
from service, as required, by the test procedure. Upon completion of i
the surveillance tests, the inspectors verified that the test results j
met the acceptance criteria of the Technical Specifications and were i
reviewed by cognizant licensee personnel. Also, the inspectors verified that corrective action was initiated, if. required, to determine the cause for any unacceptable test results and to restore the' system or
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component to an operable status consistent with the technical
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specification requirements.
No items of noncompliance or deviations were identified.
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5.
Nonconformance Reports and' Design Changes The inspectors examined several of the licensee's nonconformance reports l
and design change requests. This inspection examined a change in the zero reference gas used for hydrogen monitors (DCl-0M-lal & DC2-0M-la2). The inspectors confirmed that the identified deficiencies were tracked by
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the licensee's system and that identified nonconformances were followed
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to the completion of corrective action.
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No items of noncompliance or deviations were identified.
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6.
Preoperational Testing and Results - Unit 2 Portions of the following tests were witnessed by the inspectors:
TP 28.11 Manual and Automatic Transfer Preoperational Test.
This test demonstrated that electrical loads would be transferred from Unit to Startup power supply and vice-versa on manual and automatic demand signals and to diesel generators on loss of startup and unit power supplies.
TP 33.1 Containment Isolation and Spray Initiation.
This procedure tested the manual schemes which initiate Containment Isolation Phases A and B, Containment Ventilation Isolation, and Containment Spray Actuation.
In addition, the two out of four (2/4) Hi-Hi Containment Pressure logic scheme, which automatically initiated Main Steam Isolation, Containment Spray Actuation, and Containment Isolation Phase B, was tested. Protection trains A & B were verified separately.
TP 33.2 Integrated Safety Injection Preoperational Test.
The purpose this test was to verify operation of safety related equipment upon initiation of a Safety Inj 2ction (SI)
signal.
Protection trains A & B were verified separately.
The test included:
1)
Manual SI initiation from the control room with off-site power available and verified reactor trip. main turbine and feedwater pump turbine trip, feedwater isolation, diesel generators auto-start, transfer to startup power, containment phase A and ventilation isolation, and correct operation of SI valves and equipment.
2)
Manual SI initiation without off-site power and, in addition to verification of the above, verification of vital bus transfer to diesel generators and sequenced loading of SI related equipment.
TP 33.3 Preoperational Test of Safeguards Buses and their Load Groups.
Safety injection was initiated three separate times with a different diesel generator and the associated vital bus out-of-service for each of the three sis. Electrical loading and equipment operation was verified for each SI.
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TP 33.4 Emergency Core Cooling Systems Preoperational Test.
This included testing of Containment Spray and high and low head Safety Injection Systems at ambient conditions with the Reactor Vessel open. This test verified the functioning of ECCS as described in the FSAR. The test includes verification of high head Safety Injection operation, during-hot functional testing, and of the intermediate head pump and accumulators during cooldown from hot.functionals. The hot functional portion of the test will be witnessed later.
TP 33.5 Safety Injection to Recirculation Mode Sequence of Manual Changeover Timing Check.
This test timed the changeover from ECCS injection to cold leg recirculation.
While witnessing the above testing, the inspector verified that the procedures were technically adequate, the latest revisions were available and properly approved, the overall crew performance was adequate and, in the case of completed tests, specified acceptance criteria were met.
Administrative controls for test deficiencies and documentation were followed.
No items of noncompliance or deviations were identified.
7.
Maintenance Program The licensee's maintenance program has been inspected for compliance with regulatory requirements and commitments. Several open items will be carried from this inspection:
1)
The licensee is preparing the following procedures that will be verified on completion (50-275/83-12-01):
a.
ASME Code Section XI implementing procedures.
b.
Lifting and rigging implementing procedures; and c.
Maintenance personnel training procedures.
2)
The licensee plans to establish a formal trending program within 90 days. The program will use the current system plus some additional use of equipment history cards. Eventually, the licensee plans to have a computerized tracking system for equipment history and the related trending program (50-275/83-12-02).
3)
The licensee plans to consider methods to improve control of Vendor Tech Manuals to assure up-to-date manuals for maintenance. This function is mainly from the general office and will be followed-up on a subsequent inspection (50-275/83-12-03).
No items of noncompliance or deviations were identifie,+
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TMI Task Action Item II.E.1.1 GL3'
Vital DC power supplies have been provided for the steam supply valve to the AFW Turbine and associated AFW instrumentation. This completes the item.
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No items of noncompliance or deviations were identified.
9.
. Licensee Event Report (LER) Followup,,
The circumstances and correct.ive actions described in LER No. 82-06-were examined by the inspectors. The, inspectors found that'the LER had been reviewed by the licensee and reported.to the NRC within the proper reporting intervals. The inspectors verified that appropriate corrective actions'were taken. This LER is considered, closed.
No items of noncompliance or deviations.were identified.
10.
Exit Interview The inspectors met with licensee representatives (denoted in paragraph 1) on April 1,1983 and discussed the scope and-findings of the inspection.