Governing Logistics Information Platforms

The Extended Single Window (ESW) project aims to support goods flows by Information and Communication Technology (ICT). Specifically, the project takes the concept of Single Windows (often used in the sense that governments offer a single portal or interface to which businesses can submit information, supporting re-ruse by multiple agencies and...

Nieuwe boortechnieken kleine infra: Modelling the soil pipeline interaction during the pull back operation of horizontal directional drilling

The pull back operation is the most important stage of horizontal directional drilling (HDD). The cost of jammed pipelines, damaged pipelines and the costs for additional measures during and after the pull back operation can be considerable. Recently in the Netherlands several problems occurred during the pull back operation at some locations...

Coastal Technology - Coast 2008: Proceedings of the International Workshop Celebrating Professor Alf Tørum's 75th birthday, 29-30 May 2008, Trondheim, Norway

Proceedings on the occasion of professor Alf Tørum's 75th birthday - overview of relevant developments in coastal and offshore engineering with a focus on arctic regions.

Integraal ontwerp leidingen en riolen: Grondmechanische randvoorwaarden

Ontgrondingen rond pijpleidingen op slibhoudend zand

Het transport en de erosie van mengsels van zand met 10 tot 30% slib is onderzocht. Zowel het transport in de algemene zin als de erosie rond pijpleidingen is in beschouwing genomen. De transport karakteristieken van zand waar zich slib in bevindt verschillen van die van zuiver zand. De critische bodemschuifspanning neemt toe voor een toenemend...

Ontgronding bij persleidingbreuk

De proefresultaten van het experimentele onderzoek naar de ontgrondingskuilafmetingen bij persleidingbreuk, M1007, [3], alsmede een aantal praktijkgevallen zijn opnieuw geanalyseerd. Daartoe moesten een aantal grootheden opnieuw berekend worden uit de gearchiveerde meetgegevens. Er zijn een aantal dimensieloze parameters afgeleid, gebaseerd op...

Scour around pipelines, piles and sea walls

Review of knowledge regarding scour near pipelines and other offshore structures.

Method of Molerus and Wellman to Compute the Pressure Drop of Slurry Transport in Horizontal Pipes

In the literaturey many methods for the calculation of pipeline hydraulic transport of solids have been published. Their degree of exactness and applicability is variabie and therefore it is hard to the designer to make a convincible decision regarding their practical use. A new concept for the computation of slurry hydraulic transport in...

Exchange Flow of Oil and Sea-Water in a Ruptured Submarine Pipeline

The rupture of a submarine oil pipeline starts var10US mechanisms leading to an oil spill. Among these mechanisms the leakage of oil driven by the difference in specific gravities of oil and seawater is difficult to quantify. A simple mathematical model has been developed and laboratory experiments have been carried out to obtain an insight into...

Buoyancy-driven leakage of oil from a ruptured submarine pipeline

The rupture of a submarine oil pipeline starts various mechanisms leading to an oil spill. Among these mechanisms the leakage of oil driven by the difference in specific gravities of oil and sea-water is difficult to estimate. A simple mathematical model has been developed and laboratory experiments have been carried out to obtain an insight...

On-line superposition of geographical data to tiros-N type meteorological satellite images

A method is described, by which geographical data are superposed in real time to the high resolution HRPT imagery, received from the TIROS-N series satellites. The superposition of additional geographical data is important for an accurate position determination of the image data. Computations necessary for the transformation, conversion and...

Design and Implementation of the Delft Image Processor DIP-1

This report describes the design and implementation of the Delft Image Processor DIP-1. In this pipelined image-processing computer, a number of storage and processing modules which operate concurrently and synchronously (hardware floating-point ALUs and multiplier, conversion table and cellularlogic table) may be interconnected in a...

Non-linearity aspects in the design of submarine pipelines

An arbitrary attempt has been made to classify and discuss some non-linearity aspects related to design, construction and operation of submarine pipelines. Non-linearities usually interrelate and take part of a comprehensive design, making difficult to quantify their individual influence or sensitivity within the general project. For example,...

Tow techniques for marine pipeline installation

Tow techniques for marine pipelines frequently offer competitive and commercially attactive solutions over other installation methods and, on occasion, may represent the only alternative to traditional techniques. An assessment is also made of where each tow method is applicable and technically feasible.

Forces on a flexible pile

The maintenance of pole, stake, and pile structures in streams and waves has been important to man from antiquity. Because of the common occurrence of the flow of a fluid past a cylinder, and the simplicity of the boundaries, one might expect that long ago all related problems could have been solved . However, if one experiments with forcing a...

Marine studies for the design and construction of offshore pipelines

The design and construction of submarine pipelines involve s special investigations and studies to understand marine environmental conditions which affect the location, installation methods, and design techniques for undersea line s. The paper will discuss application of marine geology, oceanography and marine engineering studies to submarine...