ML070670323

(Westinghouse AP1000)

ML070670323
Person / Time
Site:	Summer, Bellefonte, 05200006, PROJ0740
Issue date:	03/01/2007
From:	South Carolina Electric & Gas Co
To:	Office of New Reactors
References
+reviewedjms3, AP1000
Download: ML070670323 (13)

Text

Virgil C. Summer Nuclear Station Units 2 & 3 (Westinghouse AP1000)

LEE SUMMER VOGTLE

MONTICELLO RESERVOIR FAIRFIELD PUMPED STORAGE FACILITY VCSNS UNIT 1 N

Aerial Photo PARR RESERVOIR

• Shortcut to 8991G-OVERVIEW-D-(BROAD RIVER) 8x11.jpg VCSNS UNITS 2&3 NEW NUCLEAR PARR DEPLOYMENT OFFICE PARR SHOALS DAM

Geotechnical Boring Layout Geotechnical Boring Layout Geotechnical Investigation Summary Soil & Rock Borings 111 Observation Wells 31 Cone Penetrometer Tests 36 Test Pits 4 Suspension Velocity Logging 8

Existing Subsurface Profile (Typical)

Residual Soils - Reddish Soils, Typically Sandy Silts (ML) and Silty 0 - 20 Sands (SM) with Variable Clay Content Saprolite - Completely Weathered Rock Degraded to a Soil Consistency; 20 - 40 Soil retains relict rock structure Partially Weathered Rock -

Transition Zone from Residual Soil / 40 - 45 Saprolite to Rock Competent Rock 45 - 65

Sound Rock Surface View B-312 B 334 B-335 B-308 B-320 B-317 380 Unit 3 B-307(DH) B-233 B-318 B-232 B-321 B-333 B-323 B-319B-316 B-231 B-230 B-305 B-309 B-314 B-315B-322 B-303 B-332 B-325 B-306(DH) B-301A B-330 B-301(DH) B-207(DH)

B-304 B-311(DH) B-302 B-324 B-328 B-310 B-336 B-211(DH) B-216 B-329 B-331 B-313 B-229 B-215 360 B-214 B-203 B-326 Elevation B-222 B-217 B-201(DH)

(ft) B-202 B-205 B-219 B-225 B-218 340 B-228 B-220 B-208A B-206(DH) B-224 B-221A B-204 B-223 320 1902400 B-226 B-210 B-209 B-212A N B-213 B-235 Unit 2 1903000 892000 B-236A Easting Northing 893000 380 375 370 Unit 3 Unit 2 365 360 Elevation 355 (ft) 350 345 1902400 340 335 N 330 325 1903000 892000 320 Northing Easting 315 310 305 SCEG COL Project 893000 300 Note: All coordinates are in South Carolina State Plane NAD83 and elevations use NAVD 88.

3-D View of Sound Rock Surface 295

Rock Shear Wave Velocity Unit 3 Power Block Shear Wave Velocity (ft/sec) 0 2000 4000 6000 8000 10000 12000 14000 450 400 350 300 Elevation (ft) 250 200 150 B-301 100 B-306 B-307 50 B-311 0

Rock Shear Wave Velocity Unit 2 Power Block Shear Wave Velocity (ft/sec) 0 2000 4000 6000 8000 10000 12000 14000 450 400 350 300 Elevation (ft) 250 200 B-201 150 B-206 100 B-207 50 B-211 0

Average Rock Shear Wave Velocity Unit 2 V.C. Summer Proposed Unit 2 Shear Wave Velocity (ft/sec) 0 2000 4000 6000 8000 10000 12000 14000 450 400 350 300 Elevation (ft) 250 200 150 Unit 2 Boreholes Mean + 1 Sigma 5-foot Average 100 Mean - 1 Sigma 9,200 ft/s SSE Horizon 50

Borings B-201 and B-206 Construction / Backfill Plans

• Establish Plant Grade at Elevation ~ 400

• Excavate Power Block to Competent Rock at Elevation ~ 360

• Nuclear Island: Place Fill Concrete Leveling Mat

• Other Structures: Install Engineered Backfill to Structure Foundation Level