ARAC's radiological support of the Cassini Launch Metadata

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Title

  • Main Title ARAC's radiological support of the Cassini Launch

Creator

  • Author: Baskett, R. L.
    Creator Type: Personal
  • Author: Pace, J. C.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of the Assistant Secretary for Defense Programs.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Defense Programs (DP)

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Laboratory, Livermore, CA

Date

  • Creation: 1998-10-01

Language

  • English

Description

  • Content Description: The Atmospheric Release Advisory Capability (ARAC) program at the Lawrence Livermore National Laboratory (LLNL) was the U.S. Department of Energy atmospheric modeling resource used for the contingency of potential radiological releases during the launch of the Cassini mission. Having the ARAC system up and running was one of the launch criteria during the countdown. The ARAC Center at LLNL forecasted detailed weather conditions and delivered consequence assessments for potential accident scenarios to NASA before and during launch operations. A key aspect of ARAC's support was to acquire a variety of meteorological data for use in both forecast and real-time model calculations. ARAC acquired electronically two types of real-time observed meteorological data: 1) the set of on-site tower and profiler data via the Cape Canaveral Air Station (CCAS) Meteorological Interactive Data Display System (MIDDS), and 2) routine regional airport observations delivered to the ARAC Center from the Air Force Weather Agency. We also used two forecasted data sources: 1) the U.S. Air Force 45th Weather Squadron at CCAS forecasted soundings for launch time, and 2) the Navy Operational Regional Atmospheric Prediction System (NORAPS) prognostic model which ARAC ran over the Cape. The NORAPS runs produced detailed 24-hr forecasts of 3-D wind fields. ARAC used default radiological accident source terms involving the potential destruction of Cassini�s Radioisotope Thermoelectric Generators (RTGs) during 3 phases: 1) before the launch, 2) during the first 5 sec after ignition, and 3) from 5 to 143 sec after ignition. ARAC successfully developed and delivered dose and deposition plots at 24 hours, 3 hours, and 30 minutes before each of the launch windows.
  • Physical Description: 233 Kilobytes

Subject

  • Keyword: Nesdps Office Of Nuclear Energy Space And Defense Power Systems
  • Keyword: Aircraft
  • STI Subject Categories: 54 Environmental Sciences
  • Keyword: Radiations
  • Keyword: Earth Atmosphere
  • Keyword: Aircraft Nesdps Office Of Nuclear Energy Space And Defense Power Systems

Source

  • Conference: Health Physics Society 32nd Midyear Topical Meeting, Albuquerque, NM, January 24-27, 1999

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE00003418
  • Report No.: UCRL-JC-131723
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 3418
  • Archival Resource Key: ark:/67531/metadc681774
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