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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>Transport Research International Documentation (TRID)</title>
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      <title>A DESIGN METHOD FOR AN ANCHOR PILE IN A MOORING SYSTEM</title>
      <link>https://trid.trb.org/View/19022</link>
      <description><![CDATA[This study was directed toward resolving the problem of insufficient holding power experienced by ships anchoring at locations where the bottom consists of soft soil.  A procedure is described by the authors for the design of a pile in soft clay to provide an anchor for a moored vessel. Behavior of a pile under lateral loading and axial loading and the interaction of an embedded chain are examined.  A method is presented for computing the angle of incidence of the anchor chain with the pile, and theories are presented for computing the behavior of the pile under the aforementioned conditions.  The procedures outlined in this paper can be applied to compute the dimensions of the pile and optimum positioning of the chain bracket along the pile. An example problem is presented and discussed to illustrate the procedure.  Based on a number of experiments concerning the behavior of piles under axial loading and lateral loading, the authors conclude that these portions of the problem can be solved with reasonable accuracy.  The authors recommend that the analytical procedure can be improved if such a mooring system is instrumented and data are obtained on the field behavior of the components of the system.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19022</guid>
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      <title>A DYNAMIC ANALYSIS OF MOORED AND FREE-FLOATING CABLE SYSTEMS</title>
      <link>https://trid.trb.org/View/19023</link>
      <description><![CDATA[This paper summarizes the results of a study and modeling of the dynamic behavior of cable-mass systems suspended in the ocean with a current profile varying linearly with depth. This study was directed toward the analysis of the dynamic displacement and tension in multicable, multipayload cable (including continuous and lumped parameter models) systems subject to wave surface excitation and depth varying current drag loading.  Moored and free-floating systems are considered.  The results of comparisons between model predictions and measured data indicate good correlation. Comparisons of the tension as a function of time and frequency and snap loadings were made between the lumped parameter results and experimental data.  A comparison of the system tension response as a function of frequency was made with the continuous model results and experimental data.  Based on model optimization and restriction considerations, The authors conclude that the models developed were applicable to moored and free-floating cable systems with long cables, but that the capabilities of the models did not include towed cable systems. Recommendations for implementing the models in a design study and recommendations for refinements in the analysis procedure are presented.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19023</guid>
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      <title>AMERICAN PETROLEUM INSTITUTE'S WORK ON SPILL PREVENTION, CONTAINMENT, AND CLEANUP</title>
      <link>https://trid.trb.org/View/19024</link>
      <description><![CDATA[A research program directed toward improving the industry's capability of preventing oil spills and improving response and capability of oil spill cleanup has been supported by the API since 1968.  These efforts have ranged from studies that determined industry's current oil-spill response capability to new equipment demonstrations and basic research on fate and effect of spilled oil.  More recently, API's efforts have concentrated on improvement of oil-spill recovery in high sea conditons.  Full-scale sea trials have been conducted on several systems, concentrating most heavily on "new concept" methods for oil spill recovery under these adverse conditions.  This paper summarizes some of the more recent trials of this type of equipment and also details the status of some of the API sponsored "fate and effect research" such as that being conducted by Texas A&M University, University of California, and Battelle Memorial Institute's Pacific Northwest Laboratory.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19024</guid>
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      <title>AN ANALYSIS OF MARINE RISERS FOR DEEP WATER</title>
      <link>https://trid.trb.org/View/19025</link>
      <description><![CDATA[An analysis model is formulated and described for calculating the static and dynamic behavior of a marine riser supported from a floating vessel.  Static, dynamic, and combined analyses were performed on a 16-inch riser in water depths of 400 to 200 ft. to demonstrate the consequences of extrapolating an existing riser design into deeper water.  The results showed that it is practical to use the riser in 2000 ft. of water if suitable buoyancy is attached to the riser.  Based on the study of this specific riser, the dynamic behavior of the riser, caused primarily by vessel response to waves, proved to be a significant design factor for all water depths.  Further, the most significant factor in extending riser design into deeper water is the increased tension required to support riser which may exceed the practical axial load-carrying capacity of the riser as the water depth approaches 2000 ft.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19025</guid>
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      <title>APPLICATION OF COMPUTER TECHNIQUES TO OFFSHORE OPERATIONS IN COMPLIANCE WITH O.C.S. ORDERS 5,8, AND 9</title>
      <link>https://trid.trb.org/View/19027</link>
      <description><![CDATA[OCS orders issued by the U.S. Geological Survey of the Gulf of Mexico area make the collection and reporting of specific design, inspection, repair, maintenance and failure information mandatory.  The paper describes a computerized file and report system developed to systematically document subsurface and surface safety system design, and schedule and report 140,000 required annual tests or 9,500 individual safety devices.  Independent computer systems have been developed for surface and subsurface safety systems.  The surface safety system features computer-generated test schedules that are completed in the field and act as direct keypunch forms for inputing test, repair, and maintenance information to the computer file. The subsurface safety system employs five input sources to generate computer prepared schedules and worksheets.  The computer system generates reports required by OCS orders, and computer file data can be selectively retrieved with a minimum of programming for special engineering studies, failure analysis and equipment reliability studies.  As pointed out by the authors, these systems are compatible with the company-wide information system so that safety system data can be interfaced with production and cost data.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19027</guid>
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      <title>DESIGN OF A CONTROLLED DEPTH, SUBMERGED BARGE AND TUG SYSTEM FOR ARCTIC MARINE TRANSPORTATION</title>
      <link>https://trid.trb.org/View/19028</link>
      <description><![CDATA[This paper describes the feasibility design of an Arctic marine, crude oil transportation system.  The system consists of a depth controlled, submerged barge towed by a powerful, surface icebreaking tug.  The design of the tug, barge, towing system, and control systems are decribed. Because the cargo is carried below the ice-water surface, the system is capable of achieving advance speeds through a given ice field which is greater than an equivalently powered conventional surface system.  This feature, when combined with total system costs, can represent a competitive economic advantage over alternative marine systems.  The paper concludes that the system is technically feasible and that with a suitable development program, an operational system could be realized with present day technology.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19028</guid>
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      <title>DOMESTIC WASTE TREATMENT IN THE OFFSHORE ENVIRONMENT</title>
      <link>https://trid.trb.org/View/19029</link>
      <description><![CDATA[The purpose of this paper is to describe in detail the treatment of domestic wastes in the offshore environment and to deal specifically with those idiosyncrasies of such treatment which create unique problems requiring unique solutions.  Aspects of offshore waste treatment covered in this paper include incentives for treatment of domestic wastes from both a legal and ecological viewpoint, unique problems encountered in offshore waste treatment on both fixed and moveable structures, comprehensive discussion of existing waste treatment technology applicable to offshore treatment, and proper operation and maintenance schedules.  Based on this study, the authors conclude that technically adequate solutions to most waste treatment problems encountered in the offshore production industry do exist.  Optimum use of each solution is necessary to make such solutions entirely satisfactory.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19029</guid>
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    <item>
      <title>ENVIRONMENTAL IMPACT OF A SUPERTANKER PORT</title>
      <link>https://trid.trb.org/View/19031</link>
      <description><![CDATA[This paper describes a study of the environmental aspects of an offshore supertanker port.  The methodology for conducting the environmental assessment is presented and is applicable to any site, although Texas Gulf Coast sites are examined for illustrative purposes.  Since there are several feasible site locations and many different sea and wind conditions to consider, components of a computer programmed model are being developed to evaluate the relative impact of one site over another.  The environmental inventory was completed and indexed on a 3-mile grid square base for the Gulf area and 3-mile sections along the beach for the coastal features.  Utilizing available wind and water current data, a model was developed for predicting the probability that the oil will reach a specific grid element from a given spill site.  Depending on the size of the spill and the sea conditions, it is assumed that the environmental impact will be reduced by the latest developments for control and containment of oil at sea.  For each grid element, the probability of oil reaching that point is determined along with the approximate travel time of the oil.  The reduction in oil toxicity due to evaporation, solution, and decay is included.  Although adequate information was not available from existing literature to accurately evaluate the impact of an oil spill on the environment, for the purpose of this preliminary environmental assessment, the methodology was developed and missing data were assumed when necessary.  Conclusions and recommendations based on this study are summarized.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19031</guid>
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      <title>GEOTECHNICAL CONSIDERATIONS OF SITE SELECTION FOR AN OFFSHORE NUCLEAR POWER PLANT</title>
      <link>https://trid.trb.org/View/19032</link>
      <description><![CDATA[Pursuant to plans of the Public Service Electric and Gas Company of New Jersey to locate two 1000 Megawatt Nuclear Power Plants on the Continental Shelf, a study was initiated for evaluating three potential sites off the coast of New Jersey.  All three selected sites are just within the three mile limit of the State of New Jersey jurisdiction.  This paper is limited to the foundation engineering, geological and seismological considerations in selecting the most favorable site for the Nuclear Power Plant.  Many other aspects of present day plant siting such as the legal, political, and ecological influences are referred to where pertinent.]]></description>
      <pubDate>Tue, 07 May 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/19032</guid>
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