ML20009B420
| ML20009B420 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 06/30/1981 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| References | |
| NUDOCS 8107150411 | |
| Download: ML20009B420 (5) | |
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JUN 3 0 1981-ofeDocketFile-(2):
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LB#2 File NRC PDR Docket Nos. 50-440 Attorney, OELD Local PDR and 50-441 DE17enhut NSIC RPurple TERA RTedesco TIC ASchwencer ACRS (16)
Mr. Dalwyn h. Davidson MDHouston Vice Presideilt - Engineering MService Cleveland Electric Illuminating Company Ol&E(3)
P. O. Box 5000 Glear Cleveland, Ohio 44101 LHeller
Dear Mr. Davidson:
SUBJtCT: REQUEST FOR ADDITIONAL INFOR;tATION - GE0 TECHNICAL ENGINEERING In the performance of the Perry licensing review, the staff has identified concerns in regard to geotechnical engineering. The informatior. that we require is identified in the enclosure.
We request that you provide the information not later than August 15, 1981.
After the responses have been received, the geotechnical reviewer plans to visit the Perry site to discuss these responses with your staff and observe some specific geotechnical features.
If you require any clarification of this request, please contact M. D. Ilouston, Project Manager, (301-492-8593).
Sincerely,
'Odginal signed bW Robert L. Tedesco, Assistant Director for Licensing Division of Licensing
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page 8107150411 010630 PDR ADOCK 05000440 A
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s Mr. Da1wyn R. Davidson Vice President, Engineering The Cleveland Electric illuminating Company P. O. Box 5000 Cleveland, Ohio 44101 cc: Gerald Charnoff-Esq.
Shaw, Pittman, Potts & Trowbridge 1800 M Street, N. W.
Washington, D. C.
20036 Dons 1d H. Hauser, Esq.
Cleveland Electric Illuminating Company P. 0.~ Box 5000 Cleveland, Ohio 44101 1U. S. Nuclear Regulatory Commission Resident Inspector's Office Parmly at Center Road Perry, Ohio 44081 Donald T. Ezzone, Esq.
Assistant Prosecuting Attorney 105 Main Street Lake County Administration Center Painesville, Ohio 44077.
Tod J. Kenney 228 South College Apt. A Bowling Green, Ohio 43402 Daniel D. Wilt Wegman, Hesiler & Vanderberg 1
7301 Chippewa Road, Suite 102 Brecksv111e, Ohio 44141 Jeff Alexander 920 Wilimington Ave.
Dayton, Ohio 45420 Terry Lodge, Esq.
Attorney for Applicants 915 Spitzer Building Toledo, OH 43604 l
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s F.equest for Addi icr.al Ir.fcematic - C.:,uchriict.: R ;i r.c. :. r i r.;
Perry l.uclear Power F M.t. Ur its 1 ar :. 2 Docket flumber: 50-440 241.1 In Section 2.4.5.5.1.4, you have stated that widespread slumping of (2.4.5.5.1.4)
(2.5.5.2) the upper bluff materials (which includes the lacustrine deposits)
(RSP) is caused by groundwater seepage and frost action. Demonstrate how this fact has been incorporated in the stability analysis (Section 2.5.5.2) conducted to determine the amount of bluff recession which can occur before the emergency service water pumphouse becomes endangered. In this connection, indicate, in Figure 2.5-174, the location of the groun ater table used in the analysis. The staff requires that the stability of sliding wedges, for both the static and seismic case, within the f acustrine deposits, be investigated, utilizing methods such as the Morgenstern-Price method of analysis.
241.2 Figure 2.4-72 is purported to show piezometric devices installed (2.4.13.5.3.d) through each of the building aats of the auxiliary buildings, the control complex, the intennediate building and the radwaste building, to measure the hydrostatic uplift pressure acting under these structures. However, the tip of the only piezometer shown on the figure is founded in relatively impermeable Class B fill.
Is this an error in the figure? If not, discuss the function of the piezometer in the context of measuri-tb hydrostatic uplift pressures acting under the structures durie g the life of the plant, or otherwise define its purpose.
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241.3 Provide single grain size distribution plots for each of the fc'io ;ing (2.4.13.5.5.C 4.b) materials, showing the lower end upper bounds (range) of the (2.5.4.5.2) distribution.
a) Class A fill during construction (one plot each for construction materials from the Bestone and R. W. Sidly Quarries).
b) Class B fill during construction.
c) Upper till d) Lower till 241.4 You state in section 2.4.13.5.5.c.7.d that " Falling head pemeability (2.4.13.5.5 c.7.d) testing conducted at the Perry Site reported in Section 2.5.4, further shows that the velocity and transport capability of groundwater to erode either the Chagrin shale or lower till are negligible." However, you have not addressed this ~ aspect in the mentioned section, please do'so in quantitative detail. The Staff is concerned that possible erosion of, the till and shale by flowing water could contaminate and/or clog the Class A filter. This phenomenon could seriously impair the intended use of the filter.
241.5 Provide a sumary of field density and moistu e tests obtained for (2.5.4.5.2) quality control during construction of Class A and Class B fill. The results may be presented as a statistical distribution plot showing low, high and average values. This would help the staff to conclude l
that suitable compaction has been attained.
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i 241.6 In Section 2.5.4.10.4.1, justify the use of 0.54 as the value of (2.5.4.10.4.1) the coefficient of earth pressure at rest. Provide a plot of maximum earth pressure vs. depth used to design subsurface walls under static and dynamic loads.
Include and distinguish the added lateral pressures due to compaction of the backfill and the effect of compaction equipment.
241.7 Provide construction details of the settlement monitoring points.
(2.5.4.13.4)
Update the time vs. settlement plots for all Category 1 structures where settlements are being monitored. Discuss any deviations from anticipated settlements assumed in the analysis and design of these structures and components. Evaluate all deviations for their impact on the design and construction of these structures and components.
241.8 The Staff requires construction details of the remedial work done in connection with the installation of 15 double Class B fill' waterstop;, inadvertently omitted by the contractor (refer to letter from D. R. Davidson, Vice President, " istem Engineering and Construction, Cleveland Electric Illuminating Co., to Mr. James Keppler, Director, Region III, Office of I&E, USNRC, Glen Ellyn, Illinois, dated February 29,1980). Were there other similar omissions? If so, discuss any corrective measures undertaken to resolve the situation.
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