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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>CARGO TANK OVERPRESSURIZATION AND PROCEDURES FOR VENT SYSTEM EVALUATION AND DESIGN</title>
      <link>https://trid.trb.org/View/152170</link>
      <description><![CDATA[Venting systems are employed on marine vessels to relieve pressure differences which arise between the cargo tank and atmospheric pressure.  In the case of closed gauging or a vapor recovery system, there will be a pressure rise in the tank which depends upon the cargo pumping rate and the vapor relief capacity of the vent system.  If the system does not have the proper capacity, or if there is an accidental overfill, tank failure may occur.  Analytical methods determining the pressure rise in marine cargo tanks during cargo transfer were developed and confirmed by scale-model experiments.  A study of typical vent systems in use today shows that these systems have more than adequate capacity for gas venting, but inadequate capacity for liquid overfill.  Cargo volatility has a relatively small effect on hazard evaluation, but many cargo transfer operations currently equal or exceed permissible overfill loading rates.  Furthermore in these instances of tank overfill, tank failure is expected within a very short time (less than one minute).  A method for evaluating overpressure hazard during cargo transfer operations is presented.]]></description>
      <pubDate>Mon, 09 Jun 1980 00:00:00 GMT</pubDate>
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      <title>DEVELOPMENT OF HULL OSCILLATION SIMULATOR</title>
      <link>https://trid.trb.org/View/46418</link>
      <description><![CDATA[Theoretical analysis of the force produced by the splashing motion of a liquid in tanks is extremely difficult but since such a sloshing often damages hull members, several types of apparatus have been already devised whereby lapping or sloshing motion can be reproduced. This paper concerns the invention of such an apparatus which has shown its effectiveness in the range of liquid motion analysis, in the extent of accuracy and in the degree of automation. This latest device may be of service not only in the analysis of sloshing but also in the simulation of hull oscillation for analytical purposes.]]></description>
      <pubDate>Sat, 04 Sep 1976 00:00:00 GMT</pubDate>
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      <title>LEAKAGE THROUGH CRACKS IN LNG TANKAGE</title>
      <link>https://trid.trb.org/View/23348</link>
      <description><![CDATA[An experimental and theoretical investigation of leakage through fatigue indiced cracks in cylindrical test vessels was conducted. Test vessels were constructed from two aluminum alloys and 9% nickel steel. Experimental and theoretical leak rate vs pressure curves are presented and compared. The generally higher values of leak rate predicted by the theory are explained on the basis of the observed crack geometry. Recommendations are made for predicting leakage through fatigue cracks in tanks.]]></description>
      <pubDate>Thu, 29 May 1975 00:00:00 GMT</pubDate>
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