0
Research Papers: Design and Analysis

Thermal Protection Provided by Impact Limiters to a Containment Seal Within a Truck Package

[+] Author and Article Information
Miles Greiner

Mechanical Engineering Department, University of Nevada, Reno NV 89557greiner@unr.edu

Narayana Rao Chalasani

Mechanical Engineering Department, University of Nevada, Reno NV 89557

Ahti Suo-Anttila

 Alion Science and Technology, Inc., Albuquerque, NM 87110suoanttila@comcast.com

J. Pressure Vessel Technol 130(1), 011209 (Jan 23, 2008) (7 pages) doi:10.1115/1.2826439 History: Received April 07, 2006; Revised October 10, 2006; Published January 23, 2008

The Container Analysis Fire Environment (CAFE ) computer code is used to simulate the response of a generic legal-weight-truck package to 3h fires. Simulations are performed with the package centered 1m above a 7.2m-diameter JP-8 fuel pool. They are also performed with the package horizontally offset from that location by 1m and 2.5m. Simulations without impact limiters are performed to quantify the level of thermal protection they provide. The minimum fire duration that causes the seal to reach its temperature of concern is determined for each configuration. When the center of the no-impact limiter package is within 2.5m of the pool center, 0.7h fires are capable of causing the seal to reach its temperature of concern. By contrast, the intact package protects the seal in fires that last more than 2h. These results help risk analysts understand the effect of package position and the role of impact limiters on accident consequences.

FIGURES IN THIS ARTICLE
<>
Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Test facility: (a) calorimeter, fuel pool, and wind fences before fire test and (b) plan view showing wind fences, anemometer location, compass direction, and wind direction coordinate system (16).

Grahic Jump Location
Figure 2

Wind conditions versus time measured by two anemometers that are 3.1m and 6.0m above the ground during the 30min burn: (a) wind direction (indicates direction to which the wind blew, see Fig. 1) and (b) wind speed (16).

Grahic Jump Location
Figure 3

Isis-3D computational domain used to benchmark simulations against experimental data

Grahic Jump Location
Figure 4

Three-dimensional package FE models: (a) intact package and (b) no-impact-limiter package

Grahic Jump Location
Figure 5

(a) Axial and (b) cross-sectional slice views of the intact package models. All dimensions are in centimeters.

Grahic Jump Location
Figure 6

Typical simulated fire surface snapshots for Configurations 1, 3, 4, and 6

Grahic Jump Location
Figure 7

Mid plane component temperatures for Configuration 1 (intact package Yoff=0) during and after a 3hCAFE fire

Grahic Jump Location
Figure 8

Maximum seal temperature for Configuration 1 (intact package Yoff=0) during and after 3h and duration-of-concern fires

Grahic Jump Location
Figure 9

Seal response to 3h fire∕postfire simulations for intact (triangle) and no-impact-limiter (square) packages. CAFE results are presented with solid symbols, and 10CFR71 results are reported with open symbols. (a) Maximum temperature excess ΔTE=TM,seal−TC,seal. (b) Excess time (total time seal spends above its temperature of concern during and after fire).

Grahic Jump Location
Figure 10

Duration of concern of the seal versus offset distance for intact (triangle) and no-impact-limiter (square) packages. CAFE simulations results are presented with solid symbols, and 10CFR71 calculation results are reported with open symbols.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In