ML19261E832

Forwards Questions Re Environ Monitoring,Meteorology, Hydrology & Waste Disposal

ML19261E832
Person / Time
Site:	Crane
Issue date:	07/22/1970
From:	Howe P US ATOMIC ENERGY COMMISSION (AEC)
To:	Long C US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 7910170872
Download: ML19261E832 (4)

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.2-of Engineers. However, no data are included on water surface elevations resulting from the PMF.

Picase provide the Susquehanna River probable maximum flood discharge hydrograph and associated elevations (stage-discharge) at the plant site.

The stage discharge should be based on appropriate step backwater computations for preproject and project conditions. The proposed project conditions will probably result in a higher stage for the same discharges of extreme flood events than would have resulted prior to construction due tu greater restrictions in the flood flow area. The water surface profiles for applicable floods of record including discharges and high water marks, should be verified and presented as a basis for selecting the roughness coefficients ("n" values) for both the channel and over bank flow.

Waste Dispossi 1.

Section 1.3.2.16 refers to a design change providing a separate condenser off-gas vent pipe. This will apparently be monitored by. subsystem RM-A4 described in Section 11 (page 11-19). What are the criteria for selection of monitor sensitivity and alarm set point? If leakage occurs between primary and secondarv systems, how will the monitor detect and control possible iodine releases via this route?

2.

Based en estimated volumes, contained radioactivity, flow rates, and discharge ti=es for short ter= releases, provide an analysis of the concentration of radioactivity a a function of distance downstream of the plant for various river flow conditions.

1482 300

.f 3-3.

Please discuss your criteria for maintaining radioactive effluent releases to values as low as practicable.

Include information on anticipated minimum holdup times for liquid and gaseous wastes, and your criteria for minimum processing requirements.

4 Table 11-4 indicates that a number of waste processing system components are vented to the atmosphere.

P. :,ase discuss the possibility and relative magnitude of radioactive effluent releases via this ror.te.

5 Estimates of the annual discharge of nonfission oroduct radionuclides. Please include a tabulation similar to Tables 11-6 and 11-7 which relate to fission product radionuclides and your method of estimating quantities.

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