Letter Sequence Other |
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Results
Other: A820016, Forwards Revised Tech Specs Updating 800805 Submittal Re Single Loop Operation, ML19331C219, ML19331C220, ML20052G189, ML20052G192, ML20071K553, ML20078C302, ML20082Q313, ML20090A754, ML20091K497, ML20132C457, ML20132H028, ML20137S773, NLS8500061, Advises That Util Commits to Incorporate GE SIL-380,Rev 1 Into Tech Spec by End of Current Outage Scheduled for End of June 1985.Tech Spec Changes for Dual & Single Loop Will Be Submitted within 2 Months of End of Outage
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MONTHYEARML19331C2201980-05-31031 May 1980
Single-Loop Operation
Project stage: Other
ML19331C2171980-08-0505 August 1980
Application for Amend of License DPR-46,requesting Change to App a Tech Specs 1.1 & 2.1 Re Fuel Cladding Integrity,To Allow for single-loop Operation.Fee Encl
Project stage: Request
ML19331C2191980-08-0505 August 1980
Proposed Tech Specs 1.1 & 2.1 Re Fuel Cladding Integrity to Allow for single-loop Operation
Project stage: Other
ML20090A7541980-09-30030 September 1980
Forwards Questions Re GE single-loop Operation Rept, NEDO-24258
Project stage: Other
A810016, Forwards Response to NRC Request for Addl Info Re Util 800805 Proposed Tech Spec Change to Allow Operation of Facility W/One Recirculation Loop Inoperable.Summarizes Results for Transients Analyzed1981-04-24024 April 1981
Forwards Response to NRC Request for Addl Info Re Util 800805 Proposed Tech Spec Change to Allow Operation of Facility W/One Recirculation Loop Inoperable.Summarizes Results for Transients Analyzed
Project stage: Request
ML20091K7911981-06-0808 June 1981
Draft Application for Amend to License DPR-46,revising Tech Spec 3.6.F.3 Re Single Loop Operation
Project stage: Draft Request
ML20009A3721981-07-0202 July 1981
Submits 810727-0908 Date Range for Proposed Meeting to Discuss Concerns Re Single Loop Operation for BWRs Above 50% Rated Power,In Response to 810512 Application.Proposed Agenda Encl
Project stage: Meeting
ML20090B2441981-12-10010 December 1981
Forwards Safety Evaluation Re Plant Operation on Single Loop W/Power Limited to 50%.Evalution Completes One Action Under Multi Plant Item E-04
Project stage: Approval
ML20052G1891982-05-0606 May 1982
Forwards Response to Four NRC Questions Re 800805 Proposed Tech Specs for Single Loop Operation & Updated Tech Spec Pages
Project stage: Other
ML20052G1921982-05-0606 May 1982
Updated Proposed Tech Spec Pages,Incorporating All Recent License Amends & NRC Requests Re Single Loop Operation
Project stage: Other
A820016, Forwards Revised Tech Specs Updating 800805 Submittal Re Single Loop Operation1982-07-28028 July 1982
Forwards Revised Tech Specs Updating 800805 Submittal Re Single Loop Operation
Project stage: Other
ML20071K5531982-07-28028 July 1982
Revised Tech Specs Re Single Loop Operation
Project stage: Other
ML20091K4971983-05-31031 May 1983
Technical Evaluation of Electrical,Instrumentation & Control Design Aspects of Proposed License Amend for Single Loop Operation of Cooper Nuclear Station
Project stage: Other
ML20078C3021983-09-0707 September 1983
Notice of Consideration of Issuance of Amend to License DPR-46 & Opportunity for Prior Hearing Revising Tech Spec to Permit Operation Up to 50% Rated Power W/One Recirculation Loop Out of Svc
Project stage: Other
ML20082Q3131983-12-0202 December 1983
Proposed Tech Spec Change 9 Re Single Loop Operation
Project stage: Other
ML20082Q2891983-12-0202 December 1983
Application for Amend to License DPR-46,consisting of Proposed Change 9 to Tech Specs Re Single Loop Operation. Encl Updates 800805 Submittal Which Incorporated All Recent License Amends Through Amend 83
Project stage: Request
NLS8500061, Advises That Util Commits to Incorporate GE SIL-380,Rev 1 Into Tech Spec by End of Current Outage Scheduled for End of June 1985.Tech Spec Changes for Dual & Single Loop Will Be Submitted within 2 Months of End of Outage1985-04-0404 April 1985
Advises That Util Commits to Incorporate GE SIL-380,Rev 1 Into Tech Spec by End of Current Outage Scheduled for End of June 1985.Tech Spec Changes for Dual & Single Loop Will Be Submitted within 2 Months of End of Outage
Project stage: Other
NLS8500260, Application for Amend to License DPR-46,revising Tech Specs to Allow Operation W/One Recirculation Loop Out of Svc Greater than 24 H.Fee Paid1985-09-20020 September 1985
Application for Amend to License DPR-46,revising Tech Specs to Allow Operation W/One Recirculation Loop Out of Svc Greater than 24 H.Fee Paid
Project stage: Request
ML20132C4571985-09-20020 September 1985
Proposed Tech Specs Allowing Operation W/One Recirculation Loop Out of Svc Greater than 24 H
Project stage: Other
NLS8500261, Revised Application for Expedited Amend to License DPR-46, Revising 850920 Tech Spec Changes Re Single Loop Operation. Revs Incorporate All Amends to OL Up to & Including Amend 93 Issued on 8306031985-09-23023 September 1985
Revised Application for Expedited Amend to License DPR-46, Revising 850920 Tech Spec Changes Re Single Loop Operation. Revs Incorporate All Amends to OL Up to & Including Amend 93 Issued on 830603
Project stage: Request
ML20132H0281985-09-23023 September 1985
Proposed Tech Specs,Revising 850920 Tech Spec Change Request Re Single Loop Operation
Project stage: Other
ML20137S7731985-09-24024 September 1985
Amend 94 to License DPR-46,permitting Reactor Operation W/One Recirculation Loop Out of Svc,Allowing Detection of thermal-hydraulic Instabilities,Updating Refs & Deleting Blank Pages
Project stage: Other
ML20137S7991985-09-24024 September 1985
Safety Evaluation Supporting Amend 94 to License DPR-46
Project stage: Approval
NLS8500266, Requests Withdrawal of Single Loop Operation Tech Spec Changes Requested in 800805,820506 & 28 & 831202 Submittals. Proposed Changes Superseded by 850923 & 25 Requests1985-09-27027 September 1985
Requests Withdrawal of Single Loop Operation Tech Spec Changes Requested in 800805,820506 & 28 & 831202 Submittals. Proposed Changes Superseded by 850923 & 25 Requests
Project stage: Withdrawal
ML20138H1791985-10-18018 October 1985
Notice of Withdrawal of Application for Amend to License DPR-46
Project stage: Withdrawal
1982-07-28
[Table View] |
Text
GENERAL OFFICE Nebraska Public Power District
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LQA8200144-May 6, 1982
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U.S. Nuclear Regulatory Commission y
Attention:
Mr. Domenic B. Vassallo, Chief k
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Operating Reactors Branch No. 2 is N j
Division of Licensing V
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Washington, DC 20555 co
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Subject:
Single Loop Operation -
Response to NRC Questions g_
Dear Mr. Vassallo:
Reference:
- 1) Letter from J. M. Pilant to T. A. Ippolito dated August 5, 1980, " Change to Appendix A Technical Specifications - Single Loop Operation" The District submitted Proposed Technical Specifications for Single Loop Operation with Reference 1.
Since that time, there have been numerous discussions on this issue at the request of the Staff.
Per the Staff's request, attached are responses to four questions relating to Single Loop Operation.
Also enclosed are updated Technical Specification pages from our August 5, 1980 submittal which incorporate all recent license amend-ments and Staff requests.
The District once again respectfully requests expeditious resolution of this issue so that future Emergency Technical Specification changes will not be necassary.
Sincerely, h
I. Pilant Division Manager of Licensing and Quality Assurance
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Enclosure I /
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c NRC QUESTIONS REGARDING COOPER NUCLEAR STATION TECHNICAL SPECIFICATION CHANGE FOR SINGLE LOOP OPERATION Question 1 Describe how the change from normal two recirculation cooling loop operation to one loop operations would be accomplished, with what physical and administrative controls, and while complying with branch technical position EICSB 12 regarding multiple setpoints and their control, and with IEEE STD. 279-4.15.
Response to Question 1 The change from two loop operation to one loop operation is accomplished by one pump either tripping automatically or by tripping it manually.
If a pump is tripped manually, the following steps are performed:
a.
Place the controls of both pumps on local manual.
b.
Reduce the speed of the operating pump to be removed to minimum and increase the speed of the other pump as required to hold the desired power level (less than 50 percent power when the NRC approves Technical Specifications).
c.
Close the pump discharge valve.
~
d.
Trip the pump.
When the MG set field breaker opens, close the pump discharge e.
bypass valve.
f.
Leave the reactor equipment cooling (REC) water outlet valve on the motor bearing and mechanical seal coolers throttled open.
Throttle or close the REC to the MG set fluid drive oil cooler g.
l to maintain at least 1100F oil temperature.
Leave the oil pump l'
running.
If a pump trips automatically, steps 1.b, 1.c, l.e, l.f and 1.g would be accomplished as appropriate.
The procedures encompassing the above steps have been utilized at CNS since plant startup in 1974.
Operations personnel have utilized these procedures a number of times.
Thus, there are no new unfamiliar procedures that must be utilized to change from I
two loop operation to one loop operation.
l The District is unsure what the staff's concerns are regarding multiple setpoints; however, there are no setpoints that must be changed to go from two loop operation to one loop operation. The capability is designed into the BWR and does net require any temporary system changes to accomplish.
I I
n.
n Question 2 Describe changes made to the flow computer to automatically account for magnitude and sense change for reverse flow in the idle loop jet pumps during single loop operations.
Response to Question 2 Since there is not a flow computer per se, it is not clear what the staff is seeking regarding the request for a description of the changes that must be made to that flow computer to automatically account for magnitude and sense changa for reverse flow in the idle loop jet pumps during single loop operations.
The flow hardware installed at CNS does, however, accomplish this function automatically.
If one pump trips, all flow through the jet pumps in that loop is assumed to be reverse. flow and is subtracted from the flow that is measured through the active jet pumps. This is accomplished automatically by the flow hardware and requires no changes by plant personnel.
Thus, the total core flow indication available in the control room is automatically correct for both one and two loop operation without any changes.
Question 3 Is there a requirement for the recirculation flow equalizer valves to be closed.and tagged prior to commencing single recirculation loop operation as stated in NEDO-24258 Page 1-1/1-2 and how is this require-ment ensured in the technical specification change?
Response to Question 3 CNS does not have flow equalizer valves.
Question 4 Where set point adjustments for single loop operation are required, is sufficient range available on the adjustment mechanisms to keep the new settings within the stable operating portion of the adjusting device?
Response to Question 4 There are no setpoint adjustments required at CNS for single loop operation.
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