IR 05000373/1982032
| ML20055C114 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 07/16/1982 |
| From: | Jackiw I, Lanksbury R, Maura F, Robinson D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20055C110 | List: |
| References | |
| 50-373-82-32, NUDOCS 8208100244 | |
| Download: ML20055C114 (7) | |
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U.S. NUCLEAR REGULATORY COMMISSION i
REGION III
Report No. 50-373/82-32(DETP)
Docket No. 50-373 License No. NPF-11 Licensee: Commonwealth Edison Company Post Office Box 767 Chicago, IL 60690 Facility Name: LaSalle County Nuclear Station, Unit 1 Inspection At: LaSalle Site, Marseilles, IL Inspection Conducted: June 3, 7-11, 17, 18, 23-25, July 1 and 2, 1982 Inspectors:
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Approved By:
I. N. Jackiw, Chief 7-16-ft Test Program Section
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Inspection Summary l
l Inspection on June 3, 7-11, 17, 18, 23-25, July 1 and 2, 1982 (Report l
No. 50-373/82-32(DETP))
l Areas Inspected: Routine, unannounced inspection to complete the review of l
the startup test procedures, start review of startup test results, complete review of preoperational test results, and review previously opened items.
The inspection involved 104 inspector-hours onsite by three NRC inspectors including 13 inspector-hours during offshifts.
Results: No items of noncompliance or deviations were identified.
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8208100244 820729 I
PDR ADOCK 05000373 O
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DETAILS L.
Persons Contacted
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Holyoak, Station Superintendent
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Bishop, Assistant Superintendent J. Renwick, Technical Staff Supervisor E. Pfister, Technical Staff Supervisor
- W.
Huntington, Assistant Technical Staff Supervisor
- P.
Manning, Assistant Technical Staff Supervisor
- R.
Kyrouac, QA Supervisor The inspector also interviewed other licensee employees including members of the technical staff.
- Denotes persons attending the exit interview of July 2,1982.
2.
Licensee Action on Previous Inspection Findings (Closed) Noncompliance (373/82-10-02):
Deficiency reports found to be closed but deficiencies had not been corrected. The inspector deter-mined that the licensee has taken the corrective action specified in his letter (L. O. De1 George to J. G. Keppler) dated April 28~, 1982.
(Closed) Open Item (373/81-20-17): Diesel generators capability to accelerate and carry the desiga loads within the voltage and frequency limits of Regulatory Guide 1.9.
The NRC, as stated in NUREG-0519 Supplement No. 3, modified the licensee's technical specifications to require periodic verification that an undervoltage trip signal is not generated when a 40 percent voltage drop exists for three seconds.
(Closed) Unresolved Item (373/80-15-12): Measure response time from receipt of turbine control valve fast closure signal or turbine stop valve closure signal to complete suppression of the electric arc be-tween the fully opened contacts of the recirculation pump motor circuit breakers. The inspector reviewed the licensee's results based on surveillance tests LIS-RP-05 and LIS-RR-03 and results from STP-34 and has determined that the response time is 125.5 m.sec in the case of the turbine stop valve closure signal, and 163.5 m.sec in the case of the control valve fast closure signal. The time is within the maximum allowable of 190 m.sec as noted in FSAR Chapter 15.
However, Appendix G to the FSAR states the limit is 140 m.sec.
The licensee will correct Appendix G in Amendment No. 62 and is presently tracking the change through AIR 1-82-323.
(Closed) Open Item (373/82-02-02): Unresolved deficiencies in SD-FW-101.
This open item should have been closed by Inspection Report No. 50-373/82-18, Paragraph 6, but was erroneously omitted.
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(Closed) Open Item (373/81-00-81):
Licensee must assure that the General Electric review of the power-ascension test procedures has been completed and the General Electric recommendations have been incorporated.
The inspectors have verified that the General Electric Company has reviewed all Startup Test Procedures and that its-recommendations have been incorporated.
(Closed) Open Item (373/82-25-02): Comments on STP-30.
The inspector reviewed STP-30 and verified that all of his comments had been incor-porated. The licensee presented the inspector with a letter from G.E.
Indicating that they had reviewed Revision 1 and all of their previous comments had been satisfactorily resolved and they had no further comments.
(Closed) Open Item (373/81-43-03): Counting room HVAC subsystem does not meet the required design criteria (positive pressure between the counting room and surrounding areas). The inspector reviewed a letter from Sargent and Lundy, dated June 18, 1982, that stated that they had reviewed the new data taken after completion of a modification to the Laboratory HVAC System and that the system now meets the design criteria, including positive pressure in the counting room.
(Closed) Unresolved Item (373/81-43-06). Turbine stop and control valves fast closure times do not meet the required acceptance criteria. The inspector witnessed a retest of the turbine stop and control valves and reviewed the data obtained. Control valves are required to fast close in 2 0.15 sec. and the stop valves in 2 0.10 sec.
The fastest control valve closure time was 0.31 sec. and the fastest stop valve was 0.28 sec., therefore, the inspector considers that the fast closure times of the turbine stop and control valves are acceptable.
(Closed) Open Item (373/82-25-01): Comments on STP-27.
The inspector reviewed STP-27 and verified that all of his comments had been incor-porated. The licensee presented the inspector with a letter from G.E.
Indicating that they had reviewed Revision 1 and all of their previous comments had been satisfactorily resolved and they had no further comments.
3.
Preoperational Test Results Review The inspectors reviewed the results of the following preoperational test procedures against the FSAR; the SER; Regulatory Guides 1.9, l
1.68, 1.80 and 1.108; 10 CFR 50, Appendix J, as applicable and found the results adequate unless otherwise noted:
a.
PT-IN-101, Primary Containment Instrument Air b.
PT-PC-101, Primary Containment Integrated Leak Rate Test c.
PT-DG-201A, Diesel Generator 2A.
The following tests could not be performed at this time and the licensee plans to incorporate them into PT-DG-201B.
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(1) diesel generator 2A margin load test, and (2) independence functioning of diesel generators 0, 2A and 2B This is an open item (373/82-32-01) pending review of PT-DG-201B.
In addition, the licensee was unable to demonstrate that feed breakers 2413 and 2423 can not be operated from the remote station when the transfer switch is in " local" position, and that they can not be operated from the local control station when the transfer switch is in the " remote"' position. The licbnsee is tracking this item with AIR 1-82-200.
This is an open item (373/82-32-02) pending completion of testing and review of results by SNED.
Presently the refrigerated dryers in the diesel generators' starting air system start at the same time as the air compressors. Since the-latter operate for only a short time, by the time the refrigerated dryers are ready to perform their function the air compressors have shut down. As a result, the dryers are not performing their intended function. The licensee has written FCR L1068 and L1069 to modify the present design so that the dryers are continuously ~cnergized-(cycle on temperature).
In the meantime the air receivers are blown periodically to remove accumulated water. NUREG/CR 0660, " Enhancement of On-Site Emergency Diesel Generator Reliability".=tates that the most frequent malfunction in diesel generators has been engine start failures, with water in the starting air being the root cause of most of the trouble.
NUREG/CR 0660 recommends the use of refrigerated type air dryers and further states that periodic draining of water condensate from the air
receivers has been only partially effective.
The licensee is expediting the resolution of both FCRs and expects to receive the design change from S&L by late July 1982.
If at that time it is determined that to perform the modification will require additional weeks the licensee will inform NRR of their plans to conform i
with the NUREG recommendations. This is an open item (373/82-32-03)
l pending satisfactory resolution of the problem.
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No items of noncompliance or deviations were identified.
4.
Preoperational rest Results Verification The inspectors reviewed the results of the following preoperational test procedures against the acceptance criteria.
In addition, the licensee's test evaluation was reviewed for adequacy, a.
PT-CM-101, Containment Monitoring.
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PT-0G-101, Off-Gas c.
PT-NR-102, TIP j
No items of noncompliance or deviations were identified.
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5.
Review of Startup Program Test Procedures The following startup test procedures were reviewed and found to meet the requirements of the FSAR; SER; Regulatory Guide 1.68, Revision 0; the licensee's QA Manual; and have incorporated all the. General Electric Company recommendations, unless otherwise noted:
a.
STP-29, Recirc Flow Control b.
STP-31, Loss of Turbine Generator and Offsite Power In addition, the following startup test procedures were reviewed and verified to have incorporated all General Electric recommendations:
a.
STP-1, Chemical and Radiological o'
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STP-4,' Full Core Shutdown Margin
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STP-8, Control Rod Sequence Exchange d.
STP-9[WaterLevelMeasurements-e.>
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- FTP-11, LPRM ation d
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STP-12,APRMCal;ib$ation-g.
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STP-13, Process Computer
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STP-16, Selected Process Temperatures k.
STP-17, System Expansion 1.
STP-18, Core Power Distribution s
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STP-19, Core Performance n.
STP-20, Steam Production STP-21, Core Power Void' Mode Response
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STP-22, Pressure Regulator
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STP-23A, Feedwater - Water Level Flow Change,s-ti r.
STP-23B, Loss of Feedwater Heater
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STP-23C, Feedwater Pump Trip t.
STP-23D, Max Feedwater Runout Capability
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STP-24, Turbine Valve Surveillance v.
STP-26, Safety Relief Valves j
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STP-27, Turbine Trip
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STP-30, Recire. System j
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STP-33, Drywell ?Iping Vibration z.
STP-34, Reactor Internals Vibration Measurements
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STP-35, Recirc. Flow Calibration j,,
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STP-70, RWCU ac.
STP-71, RHR
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STP-74, Off-Gas System
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STP-2, Radiation Measurements
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No items of noncompliance or deviations were idestified.
6.
Review of Startup Test Results The inspector reviewed the results of STP-5, CRD, obtained during test condition "open sessel", and has determined that:
a.
All test chaages were processed in accordanc e with Startup Manual and Technical Specification requireme nts.
b.
Test deficiencies have been processed and coerected as required.
c.
Data sheets were c.omplete and deficiencies nited.
d.
Results were ovaluated und met the acceptance criteria except for rod No. 10-11 which did not meet the Level 2 c.iteria of <15 psid during continuous insert. The rod was then single notch tested and again failed to meet the 30 psid criteria for no;ches 28 through 14.
The lowest reading being 25 psid for ne tches 22 to 18.
A review of all the friction test data showed ; hat rod No. 10-11 experienced an increase in the water prer sure required to insert the rod betweer. notches 28 to 14, with a peak of pressure of approximately 90 psi between notenes 24 and 22.
Except for the above noted notches, the nominal water pressure required to insert the rod was ~75 psi.
It should be noted that a pressure of 90 psi is still well below the value at which operational difficulties were encountered during thin control rod prototype tests. The General Electric Company has reviewed the data and has detcr ir.ed that the rod is acceptable. Rod #10-11 will be monitored throughout the
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startup program.
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the results were reviewed and approved by station management in 9.
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accordance with the Startup Manual.
No items of noncompliance or deviations were identified.
7, Exit Interview The inspector met with licensee representatives (denoted in Paragraph 1)
on July 2, 1982. Thc inspector summarized the scope and findings of the
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