ML110600900

Official Exhibit - PWA000018-00-BD01 - NRC Staff'S Response in Opposition to State of New York'S Motion for Partial Summary Disposition of NYS Contention 16/16A

ML110600900
Person / Time
Site:	Indian Point, Pilgrim
Issue date:	01/03/2011
From:	NRC/OGC
To:	Atomic Safety and Licensing Board Panel
SECY RAS
Shared Package
ML110030897	List: ML110030898 ML110030901 ML110030903 ML110030907 ML110030908 ML110030909 ML110030910 ML110030911 ML110600894 ML110600896 ML110600897 ML110600899 ML110600900
References
50-247-LR, 50-286-LR, 50-293-LR, ASLBP 06-848-02-LR, PWA 00018, RAS 19369
Download: ML110600900 (2)

Text

Nuclear Regulatory Commission Exhibit # - PWA000018-00-BD01 Docket # - 05000247l 05000286l 05000293 Identified: 02/22/2011 Admitted: 02/22/2011 Withdrawn:

Rejected: Stricken:

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Indian Point Nuclear Generatina Units 2 and 3 Docket Nos. 50-247/50-286-LR NRC Staff's Response in Opposition to State of New York's Motion for Partial Summary Disposition of NYS Contention 16/16A Exhibit 3

7. We understand that the Board admitted and consolidated NYS' Contention 16A with NYS' Contention 16 on June 16, 2009.

8. (NEB) The MELCOR Accident Consequence Code System Version 2

("MACCS2 code") was developed to evaluate the potential impacts of severe accidents at nuclear power plants on the surrounding public. The MACCS2 code considers, among other things, phenomena related to atmospheric transport and deposition under time variant meteorology, short- and long-term mitigative actions, potential exposure pathways, deterministic and stochastic health effects, and economic costs. See NUREG/CR-6613, Volume I, Code Manual for MACCS2: User's Guide ("MACCS2 User Guide") at iii (1998) (attached as Ex. K).

9. (NEB) The MACCS2 code consists of a number of modules that perform various functions including the modeling of atmospheric dispersion, exposure pathways, short- and long-term mitigation, economic costs, and deterministic and stochastic health effects. Id. at iii.

10. (NEB) The ATMOS module of the MACCS2 code performs all of the calculations for atmospheric transport, dispersion, and deposition as well as the radioactive decay that occurs prior to release and during transport through the atmosphere. Id. at 2-2.

11. (NEB) ATMOS is an integral module of the MACCS2 code and interacts with other modules of the code to predict costs and doses. Id.

12. Atmospheric transport and dispersion models similar to ATMOS attempt to predict and evaluate the concentration, deposition, and path of contaminants, utilizing mass balance principles. Atmospheric transport and dispersion models alone are not able to calculate radiological consequences or economic costs of an event. including severe accidents.