ML20195H094
| ML20195H094 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 06/22/1988 |
| From: | Shafer W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Kaplan A CLEVELAND ELECTRIC ILLUMINATING CO. |
| Shared Package | |
| ML20195H099 | List: |
| References | |
| NUDOCS 8806280217 | |
| Download: ML20195H094 (4) | |
See also: IR 05000440/1988006
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JUN 221988
Docket No. 50-440
Docket No. 50-441
The Cleveland Electric Illuminating
Company
ATTN:
Mr. Alvin Kaplan
Vice President
Nuclear Group
10 Center Road
Perry, OH 44081
Gentlemen:
This refers to the special safety inspection conducted by Mr. J. Foster and
other representatives of this office on May 2-5, 1988, of activities at the
Perry Nuclear Power Plant, Units 1 and 2, authorized by NRC Facility Operating
License No. NPF-45 and Construction Permit No. CPPR-149, and to the discussion
of our findings with Mr. D. Hulbert and others of your staff at the conclusion
of the inspection.
The enclosed copy of our inspection report identifies areas examined during
the inspection.
Within these areas, the inspection consisted of a selective
exart.ination of procedures and representative records, observations of Emergency
Response Facilities and related equipment, observation of the 1988 Emergency
Exercise, and interviews with personnel.
No violations of NRC requirer.ients were identified during the course of this
inspection.
However, there were areas identified as requiring further review
and evaluation.
These items are identified as Open Items in the Appendix to
this letter, and are also discussed in the enclosed appraisal report.
Your review of the observed problems in the TSC and E0F Heating, Ventilating,
and Air Conditioning (iVAC) systems should include an evaluation of the
ability of these systems to meet the commitments contained in your March 31,
1983 submittal (Sections 2.6 and 4.2) to the NRC (NRR). We will examine your
findings for these and other Open Items identified in the Appendix to this
letter during a future inspection.
In accordance with 10 CFR 2.790 of the Commission's regulations, a copy of
this letter, and the enclosures, will be placed in the NRC Public Document
Room.
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8806280217 880622
ADOCK 05000440
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The Cleveland Electric Illuminating
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We will gladly discuss any questions you have concerning this inspection.
Sincerely,
"Original signed by W. Snell"
W. D. Shafer, Chief
Radiological Protection Branch
Enclosures:
1.
Appendix - Appraisal
Open Items
2.
Inspection Reports
No. 50-440/88006(DRSS); and
No. 50-441/88003(DRSS)
cc w/ enclosure:
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F. R. Stead, Director, Perry
Plant Technical Department
M. D. Lyster, General Manager,
Perry Plant Operations Depar Ment
Ms. E. M. Buzzelli, Manager,
Licensing and Compliance Section
DCD/DCB (RIDS)
Licensing Fee Management Branch
Resident Inspector, RIII
Terry J. Lodge, Esq.
James W. Harris, State of Ohio
Robert M. Quillin, Ohio
Department of Health
State of Ohio, Public
Utilities Commission
Murray R. Edelman
W. Travers, NRR, EPB
W. Weaver, FEMA V
E. Williams, NRR, EPB
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APPENDIX
APPRAISAL OPEN ITEMS
1.
Open Item 440/88006-01:
Problems were observed in the TSC ventilation
system.
During the appraisal, the system was placed in the emergency
mode and the following problems were noted:
The position indication for damper DM4 (return air to suction end
of HEPA filter train) was inoperative.
The position indication lamps for damper DM3 (outside air to the
mechanical equipment room) were inoperative.-
The current initiation logic for the TSC HVAC system does not open
the damper for outside air inlet to the HEPA/ Charcoal filter train,
but does leave open the damper for outside air to the mechanical
equipment room, (not filtered).
Either one or both of the two
mechanical equipment room exhaust fans continue to run to exhaust
room air to outside.
This lineup, or any imbalance in the ventilation
system, will cause air from the mechanical equipment room to be
exhausted from the TSC envelope.
Outside air which makes up the air
volume exhausted in this manner is brought into the TSC envelope via
an unfiltered path.
Only recirculated air in the TSC envelope passes
through the emergency filter train.
Ns overall system operability or functional testing to check items
such as proper positioning of dampers and maintenance of specified
air flows and differential pressures was performed.
2.
Open Item 440/88006-02:
Computer system usage was observed for the
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computer that was running the Real Time Analysis and Display (RTAD)
process.
The minimum duty cycle observed was more than 80 percent.
Section B of the generic safety evaluation report defines the design
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goal maximum duty cycle to be 30 percent.
On requesting a random series
of screen formats from four CRT's concurrently, unused processor capability
ranged from 15 to 0 percent.
Under heavy loading (e.g., during an
accident) computer processing capability could possibly be degraded.
Some additional free capacity should be available so I. hat the system
can respond to the additional load during a severe plant transient.
3.
Open Item 440/88006-03:
The E0F HVAC System was tested in the
emergency mode during the appraisal and the following problems
noted:
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The outside air damper (F-11) on one of the two roof mounted supply
fan housings (Fan "A") failed to close.
The damper appeared to
remain about 30% open.
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Appendix
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The damper (F-5) which bypasses the HEPA filter train with return
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air (in emergency mode) and with outside makeup air (in_the
emergency mode with outside makeup air being supplied.via
Damper F-1) failed to shut completely.
The. damper. appeared
to remain about 40% open.
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Manual Damper 10-1 is located above a hallway ' acoustic ceiling tile.
Operation of the damper.is manual and is performed by a person
standing on a ladder.
The damper position cannot be seen, and
it must be operated by feel.
Proper positioning of the damper
is dependent on it being in the proper position at the beginning
of the emergency mode lineup.
As a minimum, an observable
position indicator should be added to this_ damper.
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Manual Damper 10-3 is similar to Damper 10-1 described above.
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The operating lever for 10-3 can be seen, but no position indication
is annotated on the duct or operator.
Isolation Doors 107 and 109 (in the emergency lineup checklist) are
labelled Doors "B" and "A" respectively.
No formal overall system operability testing procedures were in use
for the E0F HVAC System.
4.
Open Item 440/88006-04:
On one of the ERIS terminals in the E0F it was
noted that an occasional hardware failure causes one of the displays to
overwrite old displays, thus rendering the information unreadable.
This overwrite problem would be worse during a transient than during
the steady state power operations under which the system was evaluated.
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