ML20134F226
| ML20134F226 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 10/29/1996 |
| From: | Donnelly P CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GL-96-06, GL-96-6, NUDOCS 9611050078 | |
| Download: ML20134F226 (3) | |
Text
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-a e-i Consumem i
Power Patrick M Donnel!y MENSM Plant Manager MKNEAN5 PROGRE55 Big Rock Point Nuclear Plant,10269 US-31 North, Charlevoin. MI 49720 October 29, 1996 Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT - REPLY TO GENERIC LETTER 96-06: ASSURANCE OF EQUIPNENT OPERABILITY AND CONTAINNENT INTEGRITY DURING DESIGN-BASIS ACCIDENT CONDITIONS.
On October 3,1996, Consumers Power Company received U.S. Nuclear Regulatory Commission (USNRC) Generic Letter 96-06: Assurance of Equipment Operability and Containment Integrity During Design-Basis Accident Conditions dated September 30, 1996.
Reauested Actions (s)
Addressees have been requested to determine:
(1) if containment air cooler cooling watcr systems are susceptible to either waterhammer or two-phase flow conditions during postulated j
Mcident conditions; i
(2) if piping systems that penetrate the containment are susceptible to thermal expansion of fluid so that overpressurization of piping could occur.
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If systems are found to be susceptible to the conditions discussed in the generic letter, addressees are expected to assess the operability of affected i
1 systems and take corrective action as appropriate in accordance the i
requirements stated in 10 CFR Part 50 Appendix B and as required by the plant i
Technical Specifications.
Reauested Information 1
Within 120 days of the date of this generic letter, addressees are requested
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to submit a written summary report stating actions taken in response to the
-/00 %< i requested actions noted above, conclusions that were reached relative to i
susceptibility for waterhammer and two-phase flow in the containment air cooler cooling water system and overpressurization of piping that penetrates 9611050078 961029 '
'15 ENERGYCOMPANY PDR ADOCK 05000155 P
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i NUCLEAR REGULATORY COMMISSION 2
BIG ROCK P0 INT PLANT l
REPLY TO GENERIC LETTER 96-06 October 19, 1996 l
containment, the basis for continued operability of affected systems and components as applicable, and corrective actions that were implemented or are planned to be implemented. If systems were found to be susceptible to the conditions that are discussed in this generic letter, identify the systems affected and describe the specific circumstances involved.
Reautred Response Within 30 days of this generic letter, addressees are required to submit a written response indicating (1) whether or not the requested actions will be completed, (2) whether or not the requested information will be submitted and (3) whether or not the requested information will be submitted within the requested time period.
Licensee Response The Big Rock Point Containment heat removal systems include the containment spray system, a containment ventilation system, and an emergency (isolation) l condenser. The containment ventilation cooling system is supplied from the non l
safety-related service water system, and is not considered essential equipment l
in order to achieve safe shutdown, and therefore is classified as functionally non safety-related with regard to containment cooling. No credit is taken for the Service Water System for mitigating the consequences of a loss-of-coolant-accident.
The Big Rock Point Staff will provide a response to the requested actions wl thin 120 days of the date of the generic letter. This letter therefore meets the 30 day required response I
tbo h drzuc Patrick M Donnelly
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Plant Manager CC: Administrator, Region III, USNRC NRC Resident Inspector - Big Rock Point Attachment i
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CONSUMERS POWh....c:PANY Big Rock Point Plant Docket 50-155 License DPR-06 Response to Generic Letter No 96-06 dated October 29, 1996 At the request of the Commission and pursuant to the Atomic Energy Act of 1954 and the Energy Reorganization Act of 1974, as amended, and the Commission's Rules and Regulations thereunder, Consumers Power Company submits our response to NRC letter dated September 30, 1996, entitled, " Assurance of Equipment Operability and Containment Integrity During Design-Basis Accident Conditions".
Consumers Power Company's response is dated October 29, 1996.
CONSUMERS POWER COMPANY To the best of my knowledge, information and belief, the contents of this submittal are truthful and r.omplete.
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By r
Patrick M Donnelly Q
Plant Manager Sworn and subscribed to before me this 29th day of October 1996.
OrmLh, nYn $ cAnu) nifelk Lynn Helms, Notary Public Cha$ evoix County, Michigan My commission expires August 29, 1999.
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(SEAL)