Transportation Routing Analysis Geographic Information System (TRAGIS) User's Manual

Johnson, P.E.

doi:10.2172/885562

Cited by 7 publications

(5 citation statements)

References 3 publications

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“…The maps are adapted from the output of the routing code WebTRAGIS. 9 RADTRAN calculated the collective doses (personSv) to residents along the route segments for one spent fuel shipment using route segment lengths and population densities.…”

Section: Radtran Model Of Routine Incident-free Transportationmentioning

confidence: 99%

Spent fuel transportation risk assessment: routine transportation

Weiner

2013

Packaging, Transport, Storage & Security of Radioactive Mat

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The RADTRAN model for calculating radiation doses is based on the well understood behaviour of ionising radiation. Absorption of ionising radiation depends on the energy and type of radiation and on the absorbing material. The casks that are used to transport spent nuclear fuel have walls that absorb most of the emitted ionising radiation and thereby shield the public and the workers. For routine transportation, RADTRAN models the cask as a sphere and assumes that the longest dimension of the trailer or railcar carrying the cask is the same as that of the cask. The dose rate in Sv/h at one metre from the cask is modelled as a virtual source at the centre of a sphere whose diameter is the longest dimension of the actual spent fuel cask. People who live along the cask's route and the people in vehicles that share the route are exposed to external radiation from the cask. The dose to workers and the public from a cask during routine transportation depends on the time that the workers or public are exposed to the cask, the distance from the cask, and the cask's external radiation. When the vehicle carrying the cask is travelling along the route, the faster the vehicle goes, the less exposure to anyone along the vehicle's route. Therefore, an individual member of the public receives the largest dose from a moving vehicle when he or she is as close as possible to the vehicle, and the vehicle is travelling as slowly as possible. In the present analysis, these doses are in the range of four to seven nanosieverts. Collective doses along the route depend on the size of the exposed population. In this study, such doses were of the order of 0?1 person-millisieverts. The appropriate comparison between the collective dose from a shipment of spent fuel is not a comparison between the radiation dose from the shipment and zero dose, but between the background radiation dose in the presence and absence of a shipment, e.g. 8?810096 person-Sv if there is a shipment and 8?81000 person-Sv if there is no shipment.

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Section: Radtran Model Of Routine Incident-free Transportationmentioning

confidence: 99%

Spent fuel transportation risk assessment: routine transportation

Weiner

2013

Packaging, Transport, Storage & Security of Radioactive Mat

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“…To solve the SRM model we used software developed at the ORNL. This computer model is called the Railroad Routing and Visualization Analysis (RRVA) module (Johnson 2006), which is an extension of the Transportation Routing Analysis Geographic Information System (TRAGIS) program (Johnson and Michelhaugh 2003). RRVA is a rail‐specific extension to TRAGIS and uses a 1:100,000‐scale railroad network developed by the Federal Railroad Administration (FRA).…”

Section: Application Of Modeling Framework For Freight Routing To Andmentioning

confidence: 99%

A Framework for Modeling Rail Transport Vulnerability

Peterson

Church

2008

Growth and Change

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Railroads represent one of the most efficient methods of long-haul transport for bulk commodities, from coal to agricultural products. Over the past 50 years, the rail network has contracted while tonnage has increased. Service, geographically, has been abandoned along short-haul routes and increased along major long-haul routes, resulting in a network that is more streamlined. The current rail network may be very vulnerable to disruptions, like the failure of a trestle. This paper proposes a framework to model rail network vulnerability and gives an application of this modeling framework in analyzing rail network vulnerability for the State of Washington. It concludes with a number of policy-related issues that need to be addressed in order to identify, plan, and mitigate the risks associated with the sudden loss of a bridge or trestle. Copyright (c) 2008 Copyright the Authors. Journal compilation (c) 2008 Wiley Periodicals, Inc..

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“…Examples of accident-severity category development include the work of Wilmot (1981), Fischer et al (1987), andSprung et al (1998;2000).…”

Section: Risk and Risk Assessmentmentioning

confidence: 99%

“…Methods for developing these population data with a GIS (Graphical Information System) have been developed at SNL (Mills, Neuhauser, and Kanipe, 1995). ORNL also has updated its previous routing codes (HIGHWAY and INTERLINE) with a GIS platform, TRAGIS, that also includes 2000 U. S. Census figures (Johnson et al, 2000).…”

Section: Population Densitymentioning

confidence: 99%

RADTRAN 5 user guide.

Kanipe¹,

Neuhauser²

2003

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This User Guide for the RADTRAN 5 computer code for transportation risk analysis describes basic risk concepts and provides the user with step-by-step directions for creating input files by means of either the RADDOG input file generator software or a text editor. It also contains information on how to interpret RADTRAN 5 output, how to obtain and use several types of important input data, and how to select appropriate analysis methods. Appendices include a glossary of terms, a listing of error messages, data-plotting information, images of RADDOG screens, and a table of all data in the internal radionuclide library. 4 AcknowledgmentThe authors thank Timothy Wheeler and Scott Mills for their thorough technical reviews and advice. We also wish to acknowledge the editorial and word processing support of Faith Puffer and Debra Rivard at Tech Reps, a division of Ktech Corporation.5

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Transportation Routing Analysis Geographic Information System (TRAGIS) User's Manual

Cited by 7 publications

References 3 publications

Spent fuel transportation risk assessment: routine transportation

Spent fuel transportation risk assessment: routine transportation

A Framework for Modeling Rail Transport Vulnerability

RADTRAN 5 user guide.

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