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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>AN LNG CARGO SYSTEM SIMULATOR FOR CREW TRAINING</title>
      <link>https://trid.trb.org/View/92158</link>
      <description><![CDATA[Inevitably the number of ships entering service, the number and variety of ship-operating companies and the number of locations of storage terminals have created a need for professional training of LNG ship crews, and for retraining as ship designs evolve and operating practices change.  Such training should combine actual equipment operation with classroom work.  The purpose of the LNG Cargo System Simulator is to provide an economical opportunity for training on actual equipment without the limitations that would be encountered on an actual LNG carrier.  On the Simulator the ship condition can be chosen at will (loading, voyage, cooldown, etc.) and a ship operation, or a part of an operation can be repeated as often as desired. Ultimately the students gain extensive experience with both normal and abnormal conditions and operations where the consequences of student action or inaction can be demonstrated safely.]]></description>
      <pubDate>Tue, 28 Aug 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/92158</guid>
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      <title>FIRST U.S.-BUILT EL PASO LNG SHIP DELIVERED BY NEWPORT NEWS</title>
      <link>https://trid.trb.org/View/87076</link>
      <description><![CDATA[The El Paso Southern is a tanker which has an overall length of 848.5 ft, a beam of 135 ft, a gross tonnage of 58,800, a capacity of 126,020 cubic meters and a service speed of 18.5 knots.  Centralized control of the propulsion system is maintained from the engine room.  Cargo handling and monitoring occurs in a cargo control room.  Overall command and navigational control is centered in the wheel house.]]></description>
      <pubDate>Tue, 31 Jul 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/87076</guid>
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      <title>REDUCTION OF ELECTRICAL CABLING COSTS -- INTRODUCING THE DATA HIGHWAY</title>
      <link>https://trid.trb.org/View/85110</link>
      <description><![CDATA[It is in the method of application of the data highway principle to specific vessels and functions where the advantages of cost reduction can best be seen.  The highest benefit accrues where long high density cable runs are at present used, for instance, in container ships for monitoring of refrigerated containers, and in special product carriers where multichannel monitoring may be required.  Further applications also lend themselves to the data highway concept, viz; remote monitoring and control of engine room from bridge, remote control of deck lights/navigation lights, remote temperature control and monitoring of cargoes, operation of tank valves, pumps etc. data logging.  In addition many domestic services can make use of the highway.]]></description>
      <pubDate>Tue, 27 Feb 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/85110</guid>
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    <item>
      <title>LPG MEASUREMENT AND CUSTODY TRANSFER</title>
      <link>https://trid.trb.org/View/81219</link>
      <description><![CDATA[Custody transfer systems are described that are based on shipboard instrumentation, measuring the mass of liquid and vapor in the tanks before and after discharge or loading.]]></description>
      <pubDate>Tue, 27 Feb 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/81219</guid>
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      <title>WATCHKEEPING (ON THE NEDLLOYD HOUTMAN) WITH TV SCREENS</title>
      <link>https://trid.trb.org/View/80784</link>
      <description><![CDATA[The Nedlloyd Houtman, a 2,450-TEU refrigerated containership is one of the first  ships to be equipped with an alarm and monitoring system, serving engine-room, refrigeration plant, and cargo and using LSI (Large Scale Integrated) circuits, microprocessor techniques, and video displays.  The system, which is based on the C.S.I. visual Alphaprom system, receives and processes signals from the sensors and as well as actuating visual and audible alarms, displays the data on a video screen, either on demand or when alarm levels are exceeded.  Three separate installations are fitted and are described in some detail. Order from BSRA as No. 49,353.]]></description>
      <pubDate>Sat, 13 Jan 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/80784</guid>
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      <title>DENSITIES OF LNG FOR CUSTODY TRANSFER</title>
      <link>https://trid.trb.org/View/76118</link>
      <description><![CDATA[The first section of the paper deals with a project carried out to provide experimental density data for liquefied natural gas components and their mixtures with a total uncertainty of less than 0.1%.  In the second section, several mathematical models for the calculation of LNG-densities for custody transfer are optimized, tested and compared.  Order from NSFI as No. 14967.]]></description>
      <pubDate>Tue, 31 Oct 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/76118</guid>
    </item>
    <item>
      <title>FOXBORO'S "HOT DIPSTICK"</title>
      <link>https://trid.trb.org/View/72230</link>
      <description><![CDATA[The LNG Custody Transfer System (CTS) measures the quantity of product loaded or discharged from LNG tanks.  Typically, present day ships will take on LNG in quantities of 125,000 cu m so that at current prices, the delivered cargo of just one load represents a value in excess of $5M.  Thus, an improved measure of accuracy--say, of 0.1 percent--represents a potential saving of $5,000 on each voyage.  If the tank geometry is accurately recorded and certified, the volume can be accurately determined by measuring the cargo level at the tank bottom and again at the top before and after loading.  The existing gas contracts require that the custody transfer system measures the level in each tank to an accuracy of plus or minus 7.5 mm, or 0.03 percent in a 25 m tank.  The direct density measuring system will measure the density of the liquid to an accuracy of plus or minus 0.2 percent, independent of the cargo composition.  These values are recorded either by an automatic data logging printout or hand recorded from direct reading of a digital display.  Finally, a sample of the LNG is taken for composition analysis.  With the values of level, density, and composition known, the mass and heating values can be determined and the total Btu calculated.  Also described are the Custody Transfer level and density measurement as well as the operation of the display and control unit.]]></description>
      <pubDate>Wed, 12 Apr 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/72230</guid>
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    <item>
      <title>LEVELLING WITH LNG</title>
      <link>https://trid.trb.org/View/72231</link>
      <description><![CDATA[This article discusses the design of instruments for a more reliable and accurate measurement of LNG cargo.]]></description>
      <pubDate>Wed, 12 Apr 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/72231</guid>
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