ML20071L749
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UNITED STATES NUCLEAR REGULATORY COMMISSION g
p WASHINGTON, D. C. 20555 e,,s September 13, 1990 MEMORANDUM FOR:
Comissioner Curtiss Harold R. Denton, Director FROM:
OfficeofGovernmentaland/
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Public Affairs
SUBJECT:
LEVEL OF DETAIL FOR REVIEW 0F CONVOY PLANTS In response to your request for information about the level of detail provided to German regulators for the review of the Standard German
" Convoy" plant, we contacted the plant's designer / constructor Siemens/KWU in Erlangen, FRG. To facilitate the discussion, we had faxed to them the table " Completeness of Design" sent to us in the August 31, 1990 letter from DOE Assistant Secretary W. Young.
An item by item comparison between 00E's proposal and the level of detail prepared by Siemens to obtain BMU certification for the Convoy design is attached. The two columns track fairly closely, but in safety related areas Siemens provided more detailed information.
In the conventional part of the plant, less detail was available.
It was noted by Siemens that while piping and cable routing was well fixed, there were minor details completed during the course of construction. They indicated that construction times were reduced from 60 months for the first Convoy unit to 55 months for the third.
Attachment:
Completeness of Design cc: Chairman Carr Comissioner Rogers Commissioner Remick SECY EDO OGC l
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l 940B030244 940629 PDR COMMS NRCC l
CORRESPONDENCE PDR l
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COMPLETENESS OF DESIGN Basis for Safety Mechanical and Piping Certification Convoy A.
Systems 1.
Reactor & Reactor Coolant Systems RFD1 same 2.
Safety Feature Systems RFD1 same 3.
HVAC o
Safety RFD1 same o
Non-Safety RF same 4.
Cooling Water Systems o
Safety RFD1 same o
Non-Safety RFD2 RF only 5.
Fuel Storage and Handling RfD2 RFD1 6.
Radioactive Waste Systems RFD2 RFD1 7.
Turbine Generator Systems RFD2 RF 8.
Main Steam, Condensate, & Feed RFD1 same 9.
BOP Auxiliary Systems R/RF same l
B.
Ccmponents
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Major Reactor Coolant System RFD1 same l
2.
Major Safety Feature RFD1 same 3.
Other Nuclear RF02 RFD1 4
Ma.iar Balance-of-Plant RF02 same 5.
Other Balance-of-Plant R/RF same ilectricai and Instrumentation and Control A.
Systems 1.
Safety and Major RFD1 same 2.
Other R/RF02 RF B.
Components 1.
Safety and Major RFD1 same 2.
Other R/RF02 RF l
Structures A.
Containment RFD1 same B.
Reactor / Auxiliary / Control Buildings RFD2/01 same C.
Diesel Generator Building RFD2/01 same 3.
Turbine Generator Building RFD2 RF only Service Building (s)
RF same l
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Key:
R:= Requirements:
' Design Criteria and Bases, Functional Descriptions, and Performance Requirements F = Functional Design:
Functional design including Piping and Instrument Diagrams, Process Flow Diagrams, Logic Diagrams, General Arrangement and Equipment Location Drawings, Component Descriptions and Design Parameters and 1
Characteristics l
D = Detailed Design:
DI = Detailed design of major plant systems and structures important to safety, plant reliabla operation and construction.
Includes structural design and structural and seismic analyses of buildings, detailed building general arrangements and structural drawings, pipe and cable routing, major equipment design specifications.
f D2 - A lesser degree of detailed design than the above for other plant systems (e.g., equipment functional specifications).
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