ML20148P697
| ML20148P697 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 03/31/1988 |
| From: | Quay T Office of Nuclear Reactor Regulation |
| To: | Sylvia B DETROIT EDISON CO. |
| References | |
| TAC-59094, NUDOCS 8804120058 | |
| Download: ML20148P697 (5) | |
Text
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6 March 31, 1988 Docket No. 50-341 Mr. B. Ralph Sylvia Group Vice President Nuclear Operations Detroit Edison Company 6400 North Dixie Highway Newport, Michigan 48166
Dear Mr. Sylvia:
SUBJECT:
Your letter dated February 27, 1987, provided information concerning the implementation of the ATWS Rule (10 CFR 50.62) for Fermi-2.
The information provided in this submittal, however, is not sufficient to determine compliance with the Commission's regulations.
In order to complete our review, please respond to the enclosed request for additional information on the recirculation pump trip (RPT) and the alternate rod injection (ARI) system by April 20, 1988.
t The request in this letter affects fewer than 10 respondents; therefore OMB clearance is not required under PL 96-511.
Sincerely, n k h.
Y.
Theodore R.. Quay, Project Manager Project Directorate III-1 Division of Reactor Projects - III, IV, V
& Special Projects
Enclosure:
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March 31, 1988 Docket No. 50-341 Mr. B. Ralph Sylvia Group Vice President Nuclear Operations Detroit Edison Company 6400 North Dixie Highway Newport, Michigan 48166
Dear Mr. Sylvia:
SUBJECT:
FERMI-2 ATWS (TAC NO. 59094)
Your letter dated February 27, 1987, provided information concerning the implementation of the ATWS Rule (10 CFR 50.62) for Fermi-2.
The information provided in this submittal, however, is not sufficient to determine compliance with the Commission's regulations.
In order to complete our review, please respond to the enclosed request for additional information on the recirculation pump trip (RPT) and the alternate rod injection (ARI) system by April 20, 1988.
The request in this letter affects fewer than 10 respondents; therefore OH8 clearance is not required under PL 96-511.
Sincerely, Nh
}
Theodore R. Quay, Project Manager ProjectDirectorateIII-1 Division of Reactor Projects - III, IV, V
& Special Projects
Enclosure:
As stated 1
Mr. B. Ralph Sylvia Detroit Edison Company Fermi-2 Facility cc:
Mr. Ronald C. Callen Ms. Lynn Goodman Adv. Planning Review Section Supervisor - Licensing Michigan Public Service Commission Detroit Edison Company 6545 Mercantile Way Fermi Unit 2 P. O. Box 30221 6400 North Dixie Highway Lansing, Michigan 48909 Newport, Michigan 48166 John Flynn, Esq.
Senior Attorney Detroit Edison Company 2000 Second Avenue Detroit, Michigan 48226 Nuclear Facilities and Environmental Monitoring Section Office Division of Radiological Health P. O. Box 30035 Lansing, Michigan 48909 Mr. Thomas Randazzo Director, Regulatory Affairs Detroit Edison Company Fermi Unit 2 6400 North Dixie Highway Newport, Michigan 48166 Mr. Walt Rogers U.S. Nuclear Regulatory Commission Resident Inspector's Office 6450 W. Dixie Highway Newpnrt, Michigan 48166 Monroe County Office of Civil Preparedness 963 South Raisinville Monroe, Michigan 48161 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
i Enclosure REQUEST FOR ADDITIONAL INFORMATION ON ATWS REVIEW RELATED TO ALTERNATE R00 INJECTION (ARI) AND RECIRCULATION PUMP TRIP (RPT) SYSTEMS FERMI-2 NRC DOCKET N0. 50-341 Please provide the following design-information as supporting documentation of your method of compliance with 10 CFR 50.62:
1.
Provide the electrical functional diagrams for the ARI and RPT systems from the sensors to the final actuated devices.
2.
Please identify, by number in the NEDE-31096-P Appendix A checklist, any items which the station will not be in full conformance with the ARI SER.
3.
Please identify the rod motion start and completion times after ATWS event detection.
4.
Identify the interfaces if any to the safety related components / systems and the use of isolators (include isolator application description and NEDE-31096-A Appendix 8 information).
5.
Verify the diversity of all components utilized for ARI; identify by Manufacturer and model both ATVS and RPS trip related components.
6.
Verify ARI and RPT electrical independence from the existing RTS.
7.
Identify and describe the physical independence of the ARI system from the existing RTS.
8.
Identify the quality assurance provisions for the ARI/RPT equipment.
Verify compliance with Generic Letter 85-06.
9.
Identify the power connections for the ARI system, verify independence from the RTS and the ability to perform its function with a loss-of-offsite power.
10.
Identify and describe ARI testability at power and the bypass criteria employed for the testing.
11.
Verify coincident logic design is employed for ARI design and identify the ATWS actuation setpoint utilized to avoid the challenge to the RTS scram.
j 12.
Identify and describe the manual API /RPT initiation capability.
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Provide a listing / description of ARI/RPT readouts in the control room.
- 14. Verify the ARI system has the ability to complete its protective action once it is initiated.
15.
Describe the RPT system and identify the separation, independence, power source, testability at power, environmental qualification and compare the design with NRC previously approved generic designs.
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