ML19331C002
| ML19331C002 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 07/18/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Berry G POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| References | |
| 800714, NUDOCS 8008130696 | |
| Download: ML19331C002 (6) | |
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UNITED STATES v
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July 18,1980 Docket No. 50-333 Mr. George T. Berry President and Chief Operating Officer Power Authority of the State of New York 10 Columbus Circle New York, New York 10019
Dear Mr. Berry:
By letter dated May 6,1980, you provided the Fisher Controls Company analysis results regarding Containment Vent and Purge System isolation valve operability. This information was subnitted in accordance with NRC letter of October 22, 1979.
We have reviewed your May sutrnittal as well as information previously docketed. The result is a need for additional information (Enclosures 1 and 2) so that our evaluation may proceed. Therefore, the Power Authority of the State of New York is requested either to forward this information or to schedule a meeting in Bethesda to discuss the areas of NRC concern.
Your time and efforts are appreciated.
If we can be of assistance, please contact the FitzPatrick project manager.
Sincerely, Thomas A. Ippolito, Chief Operating Reactors Branch #2 Division of Licensing
Enclosure:
Request for Additional In forma tion cc w/ enclosure:
See next page 8008130[7g 0
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1 Mr. George T. Berry July 18,1980 j
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Mr. Charles M. Pratt Assistant General Counsel Power Authority of the State of New York 10 Columbus Circle New York, New York 10019
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Mr. J. Phillip Bayne Senior Vice President -
f Nuclear Generation Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Mr. Raymond J. Pasternak Resident Manager James A. FitzPatrick Nuclear Power Plant P. O. Box 41 Lycoming, New York 13093 Director, Technical Development Programs State of New York Energy Office Agency Building 2 Empire State Plaza Albany, New York 12223 George M. Wilverding Manager-Nuclear Licensing 10 Columbus Circle i
New York, New York 10019 State University College at Oswego Penfield Library - Documents y
Oswego, New York 13126 4,
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-a REQUE FOR ADDITIONAL INFORMATION JAMES A. FITZPATRICK NUCLEAR POWER STATION.
' CONTAINMENT PURGING DURING NORMAL PLANT OPERATIONS ELECTRICAL OVERRIDE CRITERIA 1.
The NRC position that the override of one type of safety actuation signal must not cause the blocking of any other type of safety actuation signal to isolation valvesa is not met.
Your response to-question 5b states "in the current design, bypasses of multiple safety actuation signals can be initiated by a single override action." ' Describe how you will modify these circuits to eliminate this design deficiency.
Provide your schedule for completion of this modification.
2.
The NRC position that sufficient physical features need to be provided to facilitate adequate administrative controlsa is satisfied where you have provided keylock bypass switches. Howgver for the reset of other ESF actuation signals, your responses
,c do not indicate that the position is satisfied. Describe the physical features that prevent unintentional reset of the ESF actuation signals, or describe how you will modify the reset function to eliminate this design deficiency.
Provide your schedule for completion of each such modification.
Re ferences a.
NRC/DL letter (A. Schwencer) to all BWR and PWR licensees, "Contain-ment Purging During Normal Plant Operation," November 28, 1978 b.
PASNY letter, Paul J. Early, to Director of Nuclear Reactor Regulation,
" Response to NRC Regeust for Additional Information for the Contain-ment Purge. and Vent System," March 19,1980, JPN-80-16.
c.
PANSY letter, Paul J. Early, the Director of Nuclear Reactor Regulation, " Justification for Continued Containment Purging During Normal Plant Operation," August 15,1979, JPN-79-50.
REQUEST FOR ADDITIONAL INFORMATION JAYES A. FITZPATRICK NUCLEAR POWER STATION
' CONTAINMENT PURGlNG DURING NORMAL PLANT OPERATION MECHANICAL 00ERABILITY DEMONSTRATION 1.
Provide the following information for the Purge / Vent System butterfly valves that are under review.
Inside/0utside Serial Size Containment Manufacturer Part Number Number Serial Operator Unit Type Manu facturer Part Number Num ber (eg,- Air Cylinder, etc.)
Serial Solenoid Valve Type Manufacturer Part Number hmber (eg Three Way, etc.)
2.
Provide schematics of the valve assembly air circuits showing solenoid valve (s), regulators, pressure switches, etc.
3.
Has each of the butterfly valve assemblies been reviewed to assure that the basis--for qualification has oeen established for each valve assembly,
. based on the following:
a.
Valve designs may differ.
b.- Valve assemblies may differ, i.e., different operator / valve
. combinations used.
4.
Were the dynamic torque coefficients used-for the determination of torques developed, based on data resulting from actual flow tests conducted on the particular disc shape / design / size?. What was the basis used to predict torques developed in valve sizes different (especially larger valves) than the sizes known to have undergone flow tests?
=r e 5 Were installation effects accounted for in the determination of dynamic torques developed? Dynamic torques are known to be affected for example, by flow direction through valves with off-set discs, by downstream piping backpressere, by shaft orientation relative to elbows, etc. What was the basis (test data or other) used to predict dynamic torques for the
-particular valve installation?
6.
What Code, standards, or other criteria, was the valve designed to? What are the stress allowables (tension, shear, torsion, etc.) used for critical elements such as disc, pins, shaft yoke, etc. in the valve assembly?
7.
Where air operated valve assemblies use accumulators as the fail-safe feature, describe the accumulator air system configuration and its opera-tion.
Provide necessary information to show the adequacy of the accumu-lator to stroke the valve i.e., sizing and operation starting from lower limits of initial air pressure charge. Discuss active electrical com-ponents in the accumulator system, and the basis used to determine their qualification for the eavironmental condi', ions experienced.
Is the accumulator system seismically designed?
8.
For valve assemblies requiring a seal pressurization system (inflatable main seal) describe the air pressurization system configuration and oper-ation including means used to determine that valve closure and seal pres-surization have taken place. Discuss active electrical components in this ' system, and'the basis used to determine their qualification for the environmental condition experienced.
Is this system seismically designed?
For this type valve, has it been determined that the " valve travel stops" (closed position) are capable of withstanding the loads imposed at closure during the DBA-LOCA conditions?
9.
Describe-the tests and/or analysis performed to establish the qualifica-tion of the valve to perfom its intended function under the environ-mental conditions exposed to during the DBA following its long-term exposure to the normal plant envirorment.
Wha t basis i s used to establish the qualification of the valve, operators, solenoids, valves? How was the valve assembly (valve / operators) seismica!1y qualified (test, analysis, etc.)?
Where testing was accomplished, describe the type tests performed, conditions used, etc. Tests (where applicable) such as flow tests, aging simulation (thermal, radiation, wear, vibration endurance, seismic) LOCA envirorment (radiation, steam, chemicals) should be pointed out.
Where analysis was used, provide the rationale used to reach the decision that analysis could be used in lieu of testing.
Discuss conditions, assecptions, other test data, handbook data, and classical problems as they may apply.
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3-10;.Have the preventive maintenance instructions (part replacement, lubrica-tion, periodic cycling, etc.) established by the manufacturer been reviewed, and are they being followed? Consideration-should especially
.be.given to elastomeric components in valve body, operators, solencias, etc. where this hardware is installed inside containment.
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