Technical Reports

Thermal Boundary Conditions from Engulfing Fires

  • 01
  • Sep
  • 1994
AUTHOR: Koski, Brown, Gianoulakis, Nicolette, Baibbridge, Keltner, Nakos and Sobolik
OFFICE: RPD
REPORT NUMBER: DOT/FRA/ORD-94/23
SUBJECT: Hazardous Materials
KEYWORDS: heat flux; fire; thermal boundary conditions, large pool fire
ABSTRACT: Determination of a realistic fire boundary condition provides cask designers with a tool to predict accurately the response of a cask in a fire. In one approach to determining this thermal input, data were analyzed from previous engulfing fire experiments on cask-like objects. In another approach an analytical model was developed to investigate the influence of test objects on the fire. As has long been suspected, the cask and the fire environment strongly interact. The response of a cask in a fire is highly dependent on the physical and thermal characteristics of the cask; in fact, a very massive cask can alter the early fire environment. Therefore, it appears unlikely that a simple fire boundary condition can be derived that will accurately describe the response of a cask in a fire.

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