ML20268A753

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5 to Updated Final Safety Analysis Report, Chapter 3, Drawing 515213, Rev. 6, Sheet 1, Architectural Safety Related Masonry Walls Turbine Building Elev. 85-0, 107-0, 119-0, 140-0
ML20268A753
Person / Time
Site: Diablo Canyon  
Issue date: 06/30/2020
From:
Pacific Gas & Electric Co
To:
Office of Nuclear Reactor Regulation
Shared Package
ML20268B299 List: ... further results
References
DCL-20-075
Download: ML20268A753 (1)


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9 10 NOTES I. CONCRETE MASONRY WALL DIMENSIONS AND DETAIL REFERENCES ARE SHOWN ON ARCHITECTURAL DRAWINGS 59532, 59533, 59534, 59535, 59536, 5954 I, 59544, 59545, 59554, 59557, 59558 AND 59571.

2. FOR UNIT ONE CONCRETE MASONRY WALL STRUCTURAL MODIFICATIONS, KEY PLAN AND SCHEDULE OF RECORD DRAWINGS, SEE DRAWINGS 515194, 4010616 AND 4010617.
3. FOR DESIGN BASIS OF SAFETY RELATED MASONRY WALLS AND SEISMICALLY QUALIFIED NON-SAFETY RELATED MASONRY WALLS, REFER TO DCM T-31.
4. ANY MODIFICATION OF SAFETY RELATED MASONRY WALLS AND SEISMICALLY QUALIFIED NON-SAFETY RELATED MASONRY WALLS, REFER TO DCM T-31.
5. SAFETY RELATED EQUIPMENT AND SYSTEMS SHALL NOT BE LOCATED IN THE VICINITY <WITHIN A DISTANCE EQUAL TO THE WALL HEIGHT) OF EXISTING NON-SAFETY RELATED MASONRY WALLS UNLESS APPROVED BY CIVIL ENGINEERING.
6. SEISMICALLY QUALIFIED NON-SAFETY RELATED MASONRY WALLS ARE RELIED UPON TO SUPPORT SAFETY RELATED MASONRY WALLS.

QUALITY REQUIREMENTS FOR MODIFICATION OF THESE WALLS, INCLUDING STEEL SUPPORTING MEMBERS, SHALL BE THE SAME AS FOR DESIGN CLASS I

STRUCTURES.

7. SEISMICALLY QUALIFIED CEILING STRUCTURES, INCLUDING CONCRETE SLABS, METAL DECKS AND SUPPORTING FRAMING ARE RELIED UPON TO LATERALLY SUPPORT SAFETY RELATED MASONRY WALLS AND ARE SEISMICALLY QUALIFIED TO THE REQUIREMENTS OF DCM T-31.

QUALITY REQUIREMENTS FOR MODIFICATION OF THESE STRUCTURES SHALL BE THE SAME AS FOR DESIGN CLASS I STRUCTURES.

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