A Study to Reduce the Hazards of Tank Car Transportation

Bullerdiek, W. A.; Vassallo, F. A.; Adams, D. E.; Matheis, C. W.; Cornell Aeronautical Laboratory

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A Study to Reduce the Hazards of Tank Car Transportation

1970-11-01
By Bullerdiek, W. A. ; Vassallo, F. A. ; Adams, D. E. ; ...

[PDF-1.84 MB]

English

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Creators:

Bullerdiek, W. A. ; Vassallo, F. A. ; Adams, D. E. ; Matheis, C. W.

Bullerdiek, W. A. ; Vassallo, F. A. ; Adams, D. E. ; Matheis, C. W. Less -
Corporate Creators:

Cornell Aeronautical Laboratory
Corporate Contributors:

United States. Federal Railroad Administration
Subject/TRT Terms:

[+]

Expenses Fire Prevention Fires Hazardous Materials Heat Flux Liquefied Gases Pressure Relief Valves Safety Safety Equipment Tank Cars Transportation (General)
Publication/ Report Number:

FRA-RT-71-74
Resource Type:

Tech Report
Geographical Coverage:

United States
TRIS Online Accession Number:

00039269
Edition:

Final Report
Corporate Publisher:

United States. Federal Railroad Administration
Abstract:

The report details the findings of a 4-month study contract directed at reducing the hazards of tank car transportation. A number of shortcomings with existing safety-relief specifications were indicated. A key finding was that the controlling condition in sizing for propane relief should be the liquid feed, or 'upset' car condition, and not vapor feed per the current criterion. The net result is a significant undersizing of relief area considering the existing heat flux criterion to be accurate. Analytical studies and review of test data indicate the existing heat flux criterion to be significantly low--further increasing the possibilities of overpressure. A staged safety relief system was recommended for cars with liquefied compressed gas ladings. The primary relief element would be a pressure-maintaining system sized for handling abnormal operating conditions other than severe fire exposure. The secondary relief system would be a 'dump' type to drop system pressures to levels preventing catastrophic rupture and 'rocketing' under severe fire exposure conditions. Both model and full scale test programs are recommended. (Author)
Format:

PDF
Funding:

DOT-FR-00028
Collection(s):

Federal Railroad Administration US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:a7f4d7fae65d855d5fc1078aace96f8234257cc9d16675034e3422afe8f6fd11
Download URL:

https://rosap.ntl.bts.gov/view/dot/40503/dot_40503_DS1.pdf
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A Study to Reduce the Hazards of Tank Car Transportation

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