ML17138B677
| ML17138B677 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 12/09/1980 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| References | |
| NUDOCS 8012310037 | |
| Download: ML17138B677 (13) | |
Text
NRR Rdg DEisenhut RPurple JYoungblood RStark MRushbrook PCheck LRubenstein JMiller ASchwencer
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, RVollmer TMurely PEC 9
1980 Docket Nos.: '0-387
'nd 50-388 Nr. Norman W. Curtis Vice President - Engineering and Construction Pennsylvania Power and Light Company Two North Ninth Street Al1 ento>m, Pennsylvania 13101
Dear Nr. Curtis:
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Subject:
Susquehanna Steam Electric Station,,Units Nos.
1 and 2 ; Request for Additional Information As a result of our review of your application for operatiyg licenses for the Susquehanna Steam Electric Plant, we find that,we, need additional information in the area of hydrologic engiqeering apd geotechnical enginjjering.
Tge specific information required is.listed in,the Enclosure.
If you 'desire any discussion or clarification of the information requested, please contact R. H. Stark, Licensing Project Manager, (301-492-7238).
Sincerely,
Enclosure:
As stated cc w/encl.:
See next page grIHInal signed by RObert L, TedeSCO Robert L. Tedesco, Assistant Director for Licensing Division of Licensing
~88~3l. 83 X~~q OFFICE/
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/80 NRC FORM 318 (9.76) NRCM 0240 4U.S. GOVERNMENT PRINTING OFFICE: 1979.289 369,
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Mr. Norman W. Curtis Vice Pres'ident
- Engineering and Construction Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsyl vani a 18101 CC:
Mr. Earle M. Mead Project Engineering Manager Pennsylvania Power 5 Light Company 2 North. Ninth Street Allentown, Pennsyl vani a 18101 Jay Silberg, Esq.
Shaw, Pittman, Potts 8
Trowbridge 1800 M Street, N.
W.
Washington, D.
C.
20036 Mr. William E. Barberich, Nuclear Licensing Group Supervisor Pennsylvania Power 5 Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Edward M. Nagel, Esquire General Counsel and Secretary Pennsylvania Power 8 Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Bryan Snapp, Esq.
Pennsyl vani a Power 5 Light Company 2 North Ninth Street Al 1 entown, Pennsyl vani a 18101 Robert M. Gallo Resident Inspector P.
0.
Box 52 Shickshinny, Pennsylvania 18655 John L.; Anderson Oak Ridge 'National Laboratory Union Carbide Corporation Bldg. 3500, P. 0.
Box X
Oak Ridge, Tennessee 37830 Gerald R..Schultz, Esq.
Susquehanna Environmental Advocates P. 0.
Box 1560 Wikes-Barre, Pennsylvania 18703 Mr. E.B. Poser Project Engineer Bechtel Power Corporation P.
0.
Box 3965 San Francisco, California 94119 Matias F. Travieso-Diaz,.Esq.
Shaw, Pittman, Potts 5
Trowbridge 1800 M Street, N.
W; Washington, D.
C.
20036 Dr. Judith H. Johnsrud Co-Di rector Envi ronmenta 1 Coal ition on Nuclear Power 433 Orlando Avenue State College, Pa 16801 Mr. Thomas M. Gerusky, Director Bureau of Radiation Protection Department of Environmental Resources Comnonwealth of Pennsylvania P. 0.
Box 2063 Harrisburg, Pa 17120 Ms. Colleen Marsh Box 538A, RD¹4 Mountain Top, PA 18707 Mrs. Irene Lemanowicz, Chairperson The Citizens Against Nuclear Danager s P. 0.
Box 377 RD¹1
- Berwick, PA 18503 Mr. J.W. Millard Project MAnager Mail Code 394 Genera'I Electric Company 175 Curtner Avenue San Jose, California 95125
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Plant Name:
Susquehanna SES Docket Numbers:
50-387/388
Subject:
Request for Additional Information-Round Two Geotechnical Engineering (}uestions Prepared By:
- 0. Thompson, Hydrologic and Geotechnical Engineeering Branch, Division of Engineering, NRR 362.19 (Section 2.5.4.5.3)
Provide a summary of the field tests which show that the properties of the sand-cement-flyash backfill met specifications given in Section 2.5.4.5.3 of the FSAR.
In your response, list the field tests per-
- formed, describe the frequency of testing and provide a statistical analysis of strength test resultsf using a format similar to Figure 2.5-60.
362.20 (Section 2.5.4.5.3)
Provide a description of the bedding requirements for seismic Category I pipelines and conduits.
Provide a description of the quality control procedures adopted to ensur e that these requirements were met.
Summar ize relevant field test results using a format similar to Figure 2.5-60.
362.21 (Section'.5.4.'6, 2.5.4.10, and, 2.5.5.1)
FSAR Figure 2.5-38 shows rock and groundwater contours for the spray pond.
On the west side of the pond, at rock contour El 650 the estimated groundwater contour is El 670.
Explain the apparent discrepancy between the design groundwater level of El 665 and the
'predicted ground water level of El 670 in an area where the pond base is supported on about 17 ft. of granular, glacial soils.
Provide an additional liquefaction analysis for this part of the spray pond.
Revise the relevant sections of the FSAR, including 2.5.4.10.2 (third.last paragraph) as necessary, based on your response to this item.
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I 362.22 (Section 2.5.4.13)
RSP Update Table 2.5-8 of the FSAR to include settlement readings on the ESSW pumphouse from October 1978 to the present.
Also, provide a list of unusual occurrences, such as the occurrence of the OBE or raprid lowering of the groundwater level, which have the potential for causing settlement of the pumphouse.
We require that settlement monitoring of the pumphouse continue on at least an annual frequency.
for a period of at least four years, and after an unusual occurrence that has the potenti'al for causing settlement of the pumphouse.
Discuss the technical speciftcations for settlement monitoring, including limits of acceptable settlement and action plans if these limits should be exceeded.
362.23 (Section 2.5.4.14)
Provide a discussion of the cracking of the spray pond liner that occurred during liner construction.
Describe the location, depth and length of typical and extreme cracks.
Describe the corrective measures that were adopted.
Provide your evaluation of the cause(s) of cracking, including your opinion regarding the influence of hydrostatic uplift or soil settlement as contributing factors.
362.24 (Section 2.5.5.4)
Excavated material reportedly was temporarily stored at the spray pond location during construction.
Provide a brief descr'iption of material handling procedures which shows that there are no safety-related cut slopes or embankments comprised of dumped material.
Alternatively, show that compaction criteria were met for such dumped soil materials.
362.25 We understand from your submittals and response to 0.362.8 that (Q.362.8) the backfill against seismic Category I structures is lean concrete
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- Thus, we conclude that all seismic Category I pipes and conduits 'are supported on lean concrete where they enter or leave structures, and therefore there should be no concern with differential settlement at the interface between structure-supported and ground-supported parts of pipelines or conduits.
Please confirm that this is correct.
Hydrologic Engiheerin'g question and Position (g-2)
Susquehanna Steam Electric Station Units 1
and 2
Docket Numbers 50-387/388 371.29 Determine if a groundwater dewatering system is installed, being"constructed (2.4.13) or planned at the site.
Responses to items (1) through (3) are necessary only if a dewatering system is, or will be, built.
(1)
Provide a description of the dewatering
- system, including as-built drawings showing the locations of structures, components and features of the system.
Provide available information related to the-=design of all system components such as pumps, lateral interceptors, drainage blankets, and pervious fills.
(2) Determine the extent that the dewatering system is relied upon to'educe inleakage into safety-related buildings.
Document the internal water levels that cause failure of safety-related equipment.
(3) Determine if credit is given to the system for reduction of active and/or passive loads on safety-related structures or components, or on any non-safety component whose failure could affect safety-related features.
371.30-(2.4.13 and 2.5.5.2)
You state on page 2.5-120 that seepage from the spray pond will be
'onitored using observation wells and refer to subsection 2.4.13.4.
That subsection,
- however, does not contain the referenced discussion.
It is our position that the possibility of groundwater levels above r
your design elevation of 665 feet HSL be addressed by a monitoring program and technical specifications.
Therefore, provide the following information:
l.
Provide a description of your proposed monitoring program., including maps and cross-sections showing the locations and depths of the observation wells in relation to the spray pond.
Discuss the data collection program you propose, including methods of collection, schedules, and documentation.
Provide details of your proposed program (described in FSAR Section
- 2. 5. 5. 2. 2. 1) to measure actual seepage by measuring pond levels, precipitation and evaporation.
2.
Discuss technical specifications and limiting conditions of operation P
necessary to ensure that the general health and safety of the public is not endangered if the design groundwater level below the spray pond is exceeded.
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