ML14051A107
| ML14051A107 | |
| Person / Time | |
|---|---|
| Site: | Ginna  (DPR-018) |
| Issue date: | 02/12/2014 |
| From: | Korsnick M Constellation Energy Nuclear Group, EDF Group, Ginna |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML14051A107 (7) | |
Text
Mary G. Korsnick Acting Chief Executive Officer Chief Nuclear Officer CENG.
a joint venture of o
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,-"-eDF Office 410-470-5133 Fax 443-213-6739 E-mail: Maria.Korsnick@cengllc.com February 12, 2014 U.S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852 ATTENTION:
SUBJECT:
Document Control Desk RIE. Ginna Nuclear Power Plant Renewed Facility Operating License No. DPR-18 Docket No. 50-244 Update to Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident -
1.5 Year Response for CEUS Sites (a) Letter from J. A. Spina (CENG) to the Document Control Desk (NRC),
Response to NRC Request for Information Pursuant to 10 CFR 50.54(f)
Regarding the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident -
1.5 Year
Response
for CEUS
- Sites, dated September 12, 2013 (ML13259A044)
(b) Site Evaluation Study, Proposed Brookwood Nuclear Power Plant, Ontario, New York, Rochester Gas and Electric Corporation, dated June 14, 1965 (c)
Ginna Condition Report CR-2013-006524, Potential Error in Site Preliminary Geotechnical Report (Shear Wave Velocity)
REFERENCES:
On September 12, 2013 (Reference a), Constellation Energy Nuclear Generation, LLC submitted a description of the R. E. Ginna Nuclear Power Plant, LLC (Ginna) base case velocity profile and supporting subsurface materials and properties. Since Reference (a) was submitted, ongoing discussions with the contractor developing the ground motion response spectra for Ginna identified that the calculated shear wave velocity of one rock layer was incorrectly computed in the original site evaluation study (Reference b). In Reference (b), the shear wave velocity for the Queenston Siltstone, Sandstones and Shales layer, from a depth of 40 to 1040 feet, was provided as a calculated value of 7200 feet per second (fps). Based on the measured compression wave velocity and assumed Poisson's Ratio, the calculated shear wave velocity should have been 8200 fps. Ginna entered this condition into the station's corrective action program for resolution (Reference c).
Constellation Energy Nuclear Group, LLC 100 Constellation Way, Suite 200C, Baltimore, MD 21202
Document Control Desk February 12, 2014 Page 2 Attachment (1) contains the revised base case velocity profile and supporting subsurface materials and properties currently utilized by Ginna for preparation of the March 2014 seismic hazard and screening report submittal.
There are no new regulatory commitments included within this correspondence.
If there are any questions regarding this submittal, please contact Bruce Montgomery, Manager-Nuclear Safety and Security, at 443-532-6533.
I declare under penalty of perjury that the foregoing is true and correct. Executed on February 12, 2014.
Sincerely, Mary G. korsnick MGK/STD/EMT
Attachment:
(1)
Ginna - Revised Base Case Velocity Profile and Supporting Subsurface Materials and Properties cc:
NRC Project Manager, CCNPP NRC Project Manager, Ginna NRC Project Manager, NMPNS W. M. Dean, NRC Resident Inspector, Ginna
ATTACHMENT (1)
GINNA - REVISED BASE CASE VELOCITY PROFILE AND SUPPORTING SUBSURFACE MATERIALS AND PROPERTIES Constellation Energy Nuclear Group, LLC February 12, 2014
ATTACHMENT (1)
GINNA - REVISED BASE CASE VELOCITY PROFILE AND SUPPORTING SUBSURFACE MATERIALS AND PROPERTIES The information provided in this attachment provides the revised base case velocity profile and supporting subsurface materials and properties for the R. E. Ginna Nuclear Power Plant, LLC (Ginna) to satisfy the U.S. Nuclear Regulatory Commission's expectation established in Reference 1.
The information provided in the attachments to this letter is considered an interim product of seismic hazard development efforts being performed for the industry by the Electric Power Research Institute.
The basic information used to create the site geologic profile at Ginna is shown in Table 1.
Table 1 Summary of Geotechnical Profile Data for Ginna SOIL/ROCK EL.
DEPTH (1) y Vp Vs DESCRIPTION I ft I
[ft
[pcf I fps ]
fps]
Ground Surface Elevation 275' 0
During Initial Site Borings Current Ground Surface 270' 5
Elevation Deepest Structure Foundation Elevation:
23 '-8" 231'-8" Soil 0-40 130 (6) 4400 (21 2000 (5) 0.4 (7)
Queenston Siltstone, 40-1040 158 12800 (2) 8200 (")(8) 0.15 17)
Sandstones and Shales Oswego Sandstone 1040-1120 165 (6) 14000 (3) 9000 (5) 0.15 (7)
Lorraine Siltstone and Shales 1120-1720 165 (7) 16000 (31 9300 ()
0.25 (7)
Trenton Limestone 1720-2670 160 (7) 16000 (7) 9300 0.25 15000 (4)
Potsdam Sandstone 2670-2700 165 (7) 16000 (7) 10250 (5) 0.15 (7)
Pre-Cambrian Basement 2700+
Notes:
(1) Depth as measured from pre-construction, sub-surface investigations, with ground surface elevation of approximately 275' MSL (2) Measured at site (3) Measured at outcrop at Oswego, NY (4) Measured at outcrop near Prospect, NY (5) Calculated (6) Measured (7) Assumed (8) Previously identified as 7200 fps. This value was determined to have been computed incorrectly during seismic hazard report preparation (Reference 2).
1 of4
ATTACHMENT (1)
GINNA - REVISED BASE CASE VELOCITY PROFILE AND SUPPORTING SUBSURFACE MATERIALS AND PROPERTIES The revised three base-case shear-wave velocity profiles used to model amplification at the site are shown in Figure 1. Profiles 1, 2, and 3 are weighted 0.4, 0.3, and 0.3, respectively. Thicknesses, depths, and revised shear-wave velocities (Vs) corresponding to each profile are shown in Table 2.
Vs profiles for GIN NA Site Vs (ft/sec) 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 0
200 400 600 800 1000
-Profile 1
1200 Profile 2 1400 Profile 3 C.
1600 1800 2000 2200 2400 2600 2800 Figure 1 - Revised Vs profiles for Ginna Site 2 of 4
ATTACHMENT (1)
GINNA - REVISED BASE CASE VELOCITY PROFILE AND SUPPORTING SUBSURFACE MATERIALS AND PROPERTIES Table 2 Layer thicknesses, depths, and revised Vs for three profiles, Ginna Site Profile 1 Profile 2 Profile 3 thickness(ft) depth (ft)
Vs (ft/s) thickness(ft) depth (ft)
Vs (ft/s) thickness(ft) depth (ft)
Vs (ft/s) 0 8200 0
6560 0
9285 5.5 5.5 8200 5.5 5.5 6560 5.5 5.5 9285 8.5 14.0 8200 8.5 14.0 6560 8.5 14.0 9285 6.0 20.0 8200 6.0 20.0 6560 6.0 20.0 9285 9.0 29.0 8200 9.0 29.0 6560 9.0 29.0 9285 15.0 44.0 8200 15.0 44.0 6560 15.0 44.0 9285 6.0 50.0 8200 6.0 50.0 6560 6.0 50.0 9285 8.0 58.0 8200 8.0 58.0 6560 8.0 58.0 9285 14.0 72.0 8200 14.0 72.0 6560 14.0 72.0 9285 14.0 86.1 8200 14.0 86.1 6560 14.0 86.1 9285 14.0 100.1 8200 14.0 100.1 6560 14.0 100.1 9285 14.0 114.1 8200 14.0 114.1 6560 14.0 114.1 9285 6.0 120.1 8200 6.0 120.1 6560 6.0 120.1 9285 10.2 130.3 8200 10.2 130.3 6560 10.2 130.3 9285 16.2 146.6 8200 16.2 146.6 6560 16.2 146.6 9285 16.2 162.8 8200 16.2 162.8 6560 16.2 162.8 9285 16.2 179.0 8200 16.2 179.0 6560 16.2 179.0 9285 16.2 195.3 8200 16.2 195.3 6560 16.2 195.3 9285 16.2 211.5 8200 16.2 211.5 6560 16.2 211.5 9285 16.2 227.8 8200 16.2 227.8 6560 16.2 227.8 9285 16.2 244.0 8200 16.2 244.0 6560 16.2 244.0 9285 6.0 250.0 8200 6.0 250.0 6560 6.0 250.0 9285 10.7 260.7 8200 10.7 260.7 6560 10.7 260.7 9285 16.7 277.3 8200 16.7 277.3 6560 16.7 277.3 9285 16.7 294.0 8200 16.7 294.0 6560 16.7 294.0 9285 16.7 310.7 8200 16.7 310.7 6560 16.7 310.7 9285 16.7 327.3 8200 16.7 327.3 6560 16.7 327.3 9285 16.7 344.0 8200 16.7 344.0 6560 16.7 344.0 9285 16.7 360.7 8200 16.7 360.7 6560 16.7 360.7 9285 16.7 377.3 8200 16.7 377.3 6560 16.7 377.3 9285 16.7 394.0 8200 16.7 394.0 6560 16.7 394.0 9285 16.7 410.7 8200 16.7 410.7 6560 16.7 410.7 9285 16.7 427.3 8200 16.7 427.3 6560 16.7 427.3 9285 16.7 444.0 8200 16.7 444.0 6560 16.7 444.0 9285 16.7 460.7 8200 16.7 460.7 6560 16.7 460.7 9285 16.7 477.3 8200 16.7 477.3 6560 16.7 477.3 9285 16.7 494.0 8200 16.7 494.0 6560 16.7 494.0 9285 3 of 4
ATTACHMENT (1)
GINNA - REVISED BASE CASE VELOCITY PROFILE AND SUPPORTING SUBSURFACE MATERIALS AND PROPERTIES Table 2 Layer thicknesses, depths, and revised Vs for three profiles, Ginna Site Profile 1 Profile 2 Profile 3 thickness(ft) depth (ft)
Vs (ft/s) thickness(ft) depth (ft)
Vs (ft/s) thickness(ft) depth (ft)
Vs (ft/s) 6.0 500.0 8200 6.0 500.0 6560 6.0 500.0 9285 44.3 544.3 8200 44.3 544.3 6560 44.3 544.3 9285 50.3 594.6 8200 50.3 594.6 6560 50.3 594.6 9285 50.3 644.9 8200 50.3 644.9 6560 50.3 644.9 9285 50.3 695.2 8200 50.3 695.2 6560 50.3 695.2 9285 50.3 745.5 8200 50.3 745.5 6560 50.3 745.5 9285 50.3 795.8 8200 50.3 795.8 6560 50.3 795.8 9285 50.3 846.1 8200 50.3 846.1 6560 50.3 846.1 9285 50.3 896.4 8200 50.3 896.4 6560 50.3 896.4 9285 50.3 946.7 8200 50.3 946.7 6560 50.3 946.7 9285 50.3 996.9 8200 50.3 996.9 6560 50.3 996.9 9285 167.1 1164.1 9285 167.1 1164.1 6560 167.1 1164.1 9285 167.1 1331.2 9285 167.1 1331.2 6560 167.1 1331.2 9285 167.1 1498.3 9285 167.1 1498.3 6560 167.1 1498.3 9285 167.1 1665.4 9285 167.1 1665.4 6560 167.1 1665.4 9285 167.1 1832.6 9285 167.1 1832.6 6560 167.1 1832.6 9285 167.1 1999.7 9285 167.1 1999.7 6560 167.1 1999.7 9285 167.1 2166.8 9285 167.1 2166.8 6560 167.1 2166.8 9285 167.1 2334.0 9285 167.1 2334.0 6560 167.1 2334.0 9285 167.1 2501.1 9285 167.1 2501.1 6560 167.1 2501.1 9285 173.1 2674.2 9285 173.1 2674.2 6560 173.1 2674.2 9285 3280.8 5955.0 9285 3280.8 5955.0 9285 3280.8 5955.0 9285
References:
- 1. Memorandum from L. M. Regner (NRC) to M. A. Mitchell (NRC), Summary of the August 6, 2013, Public Teleconference to Discuss the Electric Power Research Institute Ground Motion Model Update Project, dated August 16, 2013 (ML1327A019)
- 2. Ginna Condition Report CR-2013-006524, Potential Error in Site Preliminary Geotechnical Report (Shear Wave Velocity) 4 of 4