ML20150B978
| ML20150B978 | |
| Person / Time | |
|---|---|
| Issue date: | 03/11/1988 |
| From: | Vissing G Office of Nuclear Reactor Regulation |
| To: | Scherer A ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY |
| References | |
| PROJECT-675A NUDOCS 8803170224 | |
| Download: ML20150B978 (4) | |
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,8 %, UNITED STATES y g NUCLEAR REGULATORY COMMISSION
)3 WASHINGTON, D. C. 20555 "l
p# March 11, 1988
%; .'O Project No. 675 Mr. A. E. Scherer, Director Nuclear Licensing Combustion Engineering 1000 Prospect Hill Road Post Office Box 500 Windsor, Connecticut 06095-CE00
Dear Mr. Sch?rer:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION CONCERNING CHAPTER 1 AND 10, CESSAR-DC, MATERIALS ENGINEERING BRANCH Our Materials Engineering Branch has reviewed the Amendment 12, Chapters 1 and 10 of the System 80+ CESSAR-DC, transmitted by your letter dated November 30, 1987, and has identified the need for additional information in order to continue the review. The enclosed Request For Additional Information describes the needed information. Our schedule calls for the information to be received within 90 days from the date of this letter.
Sincerely, y
Guy S. Vissing, P ect Manager Standardization and Non-Power Reactor Project Directorate Division of Reactor Projects III, IV, Y and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
As stated cc: See next page p
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. 1 ENCLOSURE 1 REQUEST FOR ADDITIONAL INFORMATION COMBUSTION ENGINEERING (CE) SYSTEM I 80+ AND CESSAR - DC DOCKET NO. 50-470F AND PROJECT NUMBER 675 MATERIALS ENGINEERING BRANCH DIVISION OF ENGINEERING AND SYSTEMS TECHNOLOGY 250.1. Amendment 12 to Chapter 1 contains Table 1.8-1 which lists all applicable Regulatory guides addressed in the Systen 80 design.
Documents published after Regulatory Guide 1.87 are not referenced in CESSAR.
Table 1.8-1 should be revised to include all published Regulatory guides. CE should describe the specific applicability of each published Regulatory Guide to the System 80+ design.
250.2. Amendment 12 to Chapter 10 deletes all information in SAR Section 10.2 "Turbine Generator." CE has incorporated the statenent "Later-pending completion of EPRI Chapter 13."
The topic of "Turbine Disc Integrity" is reviewed based on Standard Review Plan section 10.2.3. Stress corrosion cracking in some low pressure turbine discs has been reported in turbines supplied by the Westinghouse and General Electric companies.
The staff has reviewed this issue based on topicul reports submitted by these two vendors.
The Systen 80+ design could i-ude low pressure turbines from other vendors or newer designs that a not included in the topical reports submitted by the Westinghouse ar~ General Electric companies.
Therefore, SAR Section 10.2 should describe the specific type of material property data, the scope of the fracture mechanics evaluation and the inservice inspection program that will be provided to assure the integrity of the turbine disc.
250.3. Amendment 12 to the SAR describes the mechanical and thermodynamic design recomendations to avoid erosion damage in the feedwater and l condensate system piping. CESSAR-DC should describe the criteria for material selection and inservice inspection that will be used to minimize erosion-corrosion of components in the steam and power conversion system.
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March 11,1988 Project No. 675 Mr. A. E. Scherer, Director Nuclear Licensing Combustion Engineering 1000 Prospect Hill Road Post Office Box 500 Windsor, Connecticut 06095-0500-
Dear Mr. Scherer:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION CONCERNING CHAPTER 1 AND 10,.
CESSAR-DC, MATERIALS ENGINEERING BRANCH Our Materials Engineering Branch has reviewed the Amendment 12, Chapters 1 end 10 of the System 80+ CESSAR-DC, transmitted by your letter dated November 30, 1987, and has identified the need for additional information in order to continus the review. .The enclosed Request For Additional Information describes the needed information. Our schedule calls for the information to be received within 90 days from the date of~this letter.
Sincerely,
' Original Signed By:
Guy S. Vissing, Project Manager Standardi ation and Non-Fower Reactor Project Directorate Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
As stated cc: See next page Distribution:
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DEC :PD5NP :PDSN : : : : :
- NAME :GVi g :L nstein : : : : :
DATE :03/4 /88 :03/w /88 : : : : :
0FFICIAL RECORD COPY
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