ML20235E779

Advises That Tech Spec Pages 9,23 & 34 to Licenses DPR-29 & DPR-30 Revised to Accommodate Request to Reduce Frequency of Spurious Scrams Occurring from Sensor While Manipulating Turbine Controls During Startup

ML20235E779
Person / Time
Site:	Quad Cities, 05000000
Issue date:	04/19/1972
From:	Riesland J US ATOMIC ENERGY COMMISSION (AEC)
To:	US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20235B311	List: IA-87-111, Submits Rept on Plant,As Discussed in ACRS 150th Meeting on 721012-14.Listed Items Can Be Resolved During Const & Facility Can Be Constructed W/Reasonable Assurance for Operation W/O Undue Risk to Public Safety IR 05000254/1972009 IR 05000358/1972003 IR 05000358/1973001 IR 05000358/1973002 IR 05000358/1973003 IR 05000358/1973005 IR 05000358/1973006 IR 05000358/1973007 IR 05000358/1974001 IR 05000358/1974002 IR 05000358/1974003 IR 05000358/1975004 ML20235B308 ML20235B364 ML20235B401 ML20235B405 ML20235B424 ML20235B456 ML20235B461 ML20235B465 ML20235B477 ML20235B488 ML20235B507 ML20235B552 ML20235B582 ML20235B585 ML20235B588 ML20235B605 ML20235B618 ML20235B623 ML20235B649 ML20235B656 ML20235B662 ML20235B670 ML20235B679 ML20235B683 ML20235B687 ML20235B702 ML20235B708 ML20235B713 ML20235B714 ML20235B718 ML20235B720 ML20235B730 ML20235B734 ML20235B748 ML20235B754 ML20235B762 ML20235B764 ... further results
References
FOIA-87-111 NUDOCS 8709280265
Download: ML20235E779 (1)

Text

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UNITED STATES

,L ATOMIC ENERGY COMMISSION

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APR 191972

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Files (Docket Nos. ~ 50-254 & 50-265)

THRU . Ziemann, Chief, ORB #2, DRL QUAD CITIES TS 1 & 2 - TECHNICAL SPECIFICATION CHANGE NO. 1 In a letter dated April 7,1972, Commonwealth Edison Company proposed a change in the Technical Specifications of Facility License Nos. DPR-29 and DPR-30 for Quad Cities Units 1 and 2. The proposed change is to lower the set point of the ' turbine electro-hydraulic-control (EHC)- .

system pressure scram from 1100 psig to 900 psig. The lower set' point is requested to reduce the frequency of spurious scrams occurring {

from this sensor while manipulating the turbine controls during startup.

]

1 An identical change was proposed, evaluated and approved for Dresden Units 2 and 3. Quad Cities Units 1 and 2 have comparabic turbines, EHC systems and RPS for equally rated BWRs. The results of the Dresden evaluation as shown in the enclosed letter to Files by G. Lainas, DRL, )

dated October 26, 1971, is equally-applicable to the Quad Cities reactors. l l On this basis and because of the anticipatory nature of this scram, i l we have concluded that the proposed change does not present significant hazards considerations not described or implicit in the Safety Analysis Report and that there is reasonable assurance that the health and saf ety of the public will not be endangered. Consequently, pages 9, 23 and 34 of the Technical Specifications of Licenses DPR-29 and DPR-30 are revised to accommodate this request.

LA- [

. I. % esland'

. Operating Reactors Branch #2 Division of Reactor Licensing Enclosures Memo to Files dtd 10/26/71 cc w/ enclosure:

DJSkovholt, DRL TJCarter, DRL DLZiemann, DRL JIRiesland, DRL RMDiggo, DRL Compliance (3)

MJinks, DR (2) 8709280265 870921 0 PDR FOIA MENZ87-111 PDR