ML20236R900
| ML20236R900 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 11/12/1987 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| PY-CEI-OIE-0290, PY-CEI-OIE-290, NUDOCS 8711240094 | |
| Download: ML20236R900 (3) | |
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'T il E. C ll V E L A N D E l. E C i r,l C I L L U !L l i: l. ;
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BOX 97-a PERRY, OHIO 44o81 m TELEPHONE (216) 259-3737 s
ADDRESS-1o CENTER ROAD
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Serving The Best Location in the Nation I
Murrmy:R. Edelman PERRY NUCLEAR POWER PLANT j
, SR. Yl3 PRESIDENT '
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' NUQ. EAR d3 gou1U!.G November 12, 1987 9#
se PY-CEI/01E-0290 L 1
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IN le Mr. A...Bert Davis 9
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Regional Administrator, Region III p
D U.S. Nuclear Regulatory Commission ggt 799 Roosevelt Road r
Glen Ellyn, Illinois 60137 v
Perry Nuclear Power Plant Docke t No. 50-440 Environmental Qualification Inspection Followup Information
Dear Mr. Davis:
This letter is a follow up to the meeting conducted in your office on November 10, 1987.
It was requested that we supply additional information for qualification of ITT actuators and shipping caps installed on Limitorque grease relief valves.
Attached 'is additional inf ormation on the requested topics, g
L with a report to follow on the ITT actuator.
t Very truly yours; j
e Murray R. Edelman Senior Vice President Nuclear Group MRE:nje Attachments cc:
K. Connaughton T. Colburn Document Control Desk t 0V 19 Y 8711240094 871112
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IInitialConcerns:
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r During.the NRC' Audit,-Limitorque.MotorL0perated. Valve IP51F0652,.." Service Air
. y QQ~ce, M j*.', ' :iSystem Dryvell Isolation"1vas found with a shipping cap'on th
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?A* complete walkdown vas' conducted'of alllLimitorque operators-(safety and fs inon2 safety) located in a harsh environment. The results of'the walkdown These Limitorque identifiedithirty-one?(31) additional ~ shipping caps.
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- operators! vere located in containment.- All caps were removed. No caps were
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jfoundfonioperators in.any.other harsh zones.
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1,0perability:
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- TheTgrease relief. valve isiinstalled to' provide for the relief of grease and g
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..m ' "Allitheaffected Limitorque' operators were located in the containment. The P
~environmentaliconditions-(vorst case)lwithin the containment are profiled on ithe=B-22: Series; drawings.';The environmental conditions'for zone CT-5 has the
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[j'L highest 4 temperature profile of all'.the other zones which is only 240 degrees.
l$ J F.s The Limitorque' Qualification Report B0003 successfully' tested an actuator
-i withoutLa grease. relief l valve'to a peak temperature of 250. degrees F vithout
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. thermal! expansion of the grease.-to. affect the operability of the actuator.
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. Conclusions
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, Based"on the. statements above, this eliminates any' concern for operability of any.-Limitorque~ operated. valves.
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ITT ACTUATORS i
I Initial Concern:
Ddring.the NRC. Audit, it vas identified that the LOCA containment peak pressure environment was not enveloped by the qualification package test report.for the ITT Actuators.
lImmediate Action:
A.r'eview of pressure requirements and the auditable file package vas
. performed.
It was' determined that the finding was valid and the auditor was 1
. informed that, in the'vorst case, consequences of failure were that.the ITT actuator would fail closed following an electrical short (safe condition).
.This was accepted ~and the test data for the fail safe condition was added to the ITT test report and auditable file.
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Operability:
On August 11:the NRC requested further information on the operability of other
. equipment on.the same electrical bus as the ITT actuator. As requested
~further. review was performed. The review results concluded that no other equipment operability was impacted due to circuit design (double fuse) and this information was provided to the NRC.
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Conclusion:==
Initial review concluded that the actuator'could fail with no safety consequences however,'PNPP has reviewed data from an ITT qualification report 730.1>.140. (Rev. 4) which provides'for qualification of the actuator. The report tested the actuator.vith an unsealed conduit configuration in' addition i
-to applying.a'6 psig pressure. : The design rating (NEMA 4) of the actuator, in j
addition to being a completely " sealed" configuration at Perry, adequately protects the equipment during a LOCA.- The PNPP environmental conditions are
-enveloped by the 730.1.140 report with the exception of 3 seconds, (peak pressure of 8 8 psig) during the LOCA. This 3 second period would not J
increase the relative volume of environment that could have entered the 1
1 unsealed' configuration. Therefore, it is our position that the PNPP J
environmental configuration is less severe than an unsealed configuration.
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