ML102870212

Fm 6.2 Exhibit 2, Crystal River, Unit 3, Design Basis Document, Wire Material

ML102870212
Person / Time
Site:	Crystal River
Issue date:	09/20/2010
From:	Progress Energy Co
To:	Office of Information Services
References
FOIA/PA-2010-0116
Download: ML102870212 (2)

Text

FM.,&2 Exhibit 2 Page 1 of 2 Progress Energy CRYSTAL RIVER UNIT 3 Page 5 of 44 Rev. 6 DESIGN BASIS DOCUMENT SYSTEM NAME: SYSTEM CODE:

CONTAINMENT - GENERAL N/A PARAMETER SOURCE REASON Flexible Conduit - Flexible conduit specified in Used around penetrations in order to permit economical and wall of containment. efficient field fabrication and

- Minimum 22 gauge fitting.

- 5 1/4" O.D.

- 5" I.D.

Schedule 40 Conduit See "Conduit (General)" on Page Structural design material to 5 for the Source of requirements ensure that dome conduit Used in foundation mat and cited on this page. system is capable of supporting containment dome. the dome liner under concrete placement loads. This conduit

- ASTM A53-70, Type E or S is, therefore, load carrying such Steel pipe that Grade B material (fy = 60 Grade A for mat ksi) is specified.

Grade B for dome In the base mat the schedule 40 conduit (pipe) is the transition material between the trumpet in the base mat and the rigid conduit in the cylindrical wall.

This pipe is not required to carry structural load, such that Grade A material (fy = 48 ksi) is considered adequate.

Tendon Wire Tendon wire is specified in G/C, Steel conforming to ASTM A421 Inc. Specification SP-5583 and is is the standard material specified ASTM A421-65 listed here for reference only. throughout the industry for use Type BA as a buttonheaded tendon wire.

The steel used for this project is the Japanese equivalent of that material.

fy = 240 ksi Exceptionally high strength is required in order to develop the required level of prestress.

- Relaxation = 4% See "Tendon Wire" on Page 6 for Relaxation is a loss of stress the Source of the requirement when a wire is prestressed and cited on this page. maintained at a constant strain for an extended time. The degree to which this happens varies with the steel and is, therefore, specified by the steel supplier. That value must be known in order to evaluate the effective prestress over the life of the plant.

Tab 1/1, Revision 6 P)e

FMI,.6,.2 Exhibit 2 Page 2 of 2 Progress Energy CRYSTAL RIVER UNIT 3 Page 6 of 44 Rev. 6 DESIGN BASIS DOCUMENT SYSTEM NAME: SYSTEM CODE:

CONTAINMENT - GENERAL N/A PARAMETER SOURCE REASON Tendons G/C, Inc. Specification SP-5583 The tendon comprised of 163 -

(for reference only). 7mm wires is approximately

- 163 wire 2 equivalent to the 170-0.25 in.

Area - 9.723 in wire tendons typically being utilized in the industry at the time of plant design.

See page 19 for a summary of prestress forces in each of the three tendon groups.

Anchorage Components Prescon Shop Drawings. Utilized on the basis of recommendations from Prescon Bearing plate Corp., the supplier of the

- ASTM A533 prestressing system.

- Grade B

- Class 2 Shims PEERE # 0987

- Modified Armco VNT or like material Stressing End Washer

- Alloy steel forging Tendon Grease G/C, Inc. Specification SP-5583 Visconorust 3001A was the (for reference only). state-of-the-art tendon grease for Shop application: the prevention of corrosion of Visconorust 3001 A prestressing wires. The 3001A Field application: material was used as a Visconorust 2090P shop-applied coating. The 2090P Visconorust 2090P-2 and 2090P-2 were used to field coat the inside of the conduit as well as to serve as a bulk filler after tendon installation.

Other Visconorust formulations compatible with those noted are used during outages when tendon surveillance is carried out.

Foundation Bearing Material *The basic source for all criteria relating to foundation design parameters is:

Woodward-Clyde &Assoc.,

"Summary of Foundation Investigation Evaluation and Construction for Crystal River Unit 3."

Tab 1/1, Revision 6

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