Abstract:
The present invention is a hydraulic excavation and delivery device capable of hydraulically removing soil overburden from a buried structure, like a pipeline, and delivering an article, such as an electro-mechanical connector for attachment to the buried structure. Hydraulic excavation is achieved by directing a stream of fluid at soil adjacent to and inside an open bottom region of the device to simultaneously dislodge adjacent soil, suspend dislodged soil in the accumulating fluid and form a pit that the device may fit within. Delivery of article is achieved by: (1) loading an article into the tool; (2) advancing the device toward the buried structure by deepening the pit without significant failure (slumping or sagging) of the pit walls until a portion of the buried structure is exposed and within the device; (3) landing the device on the exposed portion of the structure; (4) fixing the article to the exposed portion of the structure; and (5) releasing the article from the device.
Abstract:
The invention provides a water treatment apparatus and method of use. The apparatus comprises an inlet configured to be connected to a source of liquid to be treated and at least one liquid treatment vessel arranged to expose liquid in the vessel to ultraviolet radiation in an advanced oxidation process reaction. At least one source of ultraviolet radiation having at least one emission surface is provided. A flow redirection volume is disposed between the inlet and the at least one treatment vessel, and the flow redirection volume is arranged to redistribute flow of a liquid being treated from the inlet across the at least one emission surface, such that a maximum distance between the liquid flowing in the liquid treatment vessel and the emission surface in a direction substantially normal to the emission surface is less than 20mm.
Abstract:
Изобретение относится к области противокоррозионной защиты. Способ заключается в том, что формируют на металлической поверхности многослойное защитное покрытие. Первый слой формируют из материала, способного взаимодействовать с водным электролитом и менять свойство электропроводности. Второй слой - из гидроизолирующего токопроводящего материала. Электрохимически активный композиционный материал, способный взаимодействовать с водным электролитом, понижает свое электрическое сопротивление при контакте с водным электролитом образован при смешивании компонента А и компонента Б. Гидроизоляционный низкоомный материал для формирования второго и последующих слоев защитного покрытия, образован при смешивании компонента А1 и компонента Б1. Покрытие включает первый слой, сформированный из электрохимически активного композиционного материала, и, по меньшей мере, один второй слой, сформированный гидроизоляционного низкоомного материала. В результате достигается возможность при использовании катодной защиты предотвратить или резко уменьшить подпленочную коррозию.
Abstract:
A survey device, for surveying an installation to which a cathodic protection voltage is applied, the cathodic protection voltage exhibiting at least a first transition event (e.g. switch on/off), comprising at least one input adapted to receive an input signal corresponding to electrical activity (e.g. voltage or current detected) arising at the installation from the cathodic protection voltage. A processor is coupled to the inputs and is operable to (i) receive one or more detection signals (e.g. sampled/digitised), at least one detection signal corresponding to or being based upon the input signal; (ii) determine, from the at least one detection signal, the occurrence of the first transition event; and (iii) take a measurement of the electrical activity a predetermined time delay (e.g. configurable by a User on a PDA coupled to the survey device) after the first transition event. The survey device may operate in automatic mode, in which transition events at or near an expected time are monitored, and in the event of discrepancies from the expected, timings such as currently estimated modulation period are adjusted. Also disclosed is a method for surveying an installation to which a cathodic protection voltage is applied.
Abstract:
Elément de tuyauterie (1) à base de fer, notamment en fonte, pour canalisation enterrée, comprenant un revêtement extérieur (9) comportant : - une première couche (11) comportant au moins une couche poreuse d'alliage zinc/aluminium contenant 5 à 60 % d'aluminium en proportion massique; - une seconde couche (13) d'adhésif située sur la première couche (11); et - une troisième couche (15) située sur la seconde couche (13) et comprenant un matériau organique de synthèse. Procédé de fabrication d'un tel élément de tuyauterie.
Abstract:
A sleeve is placed between a first body and second body, where the first body and the second body are different materials. The sleeve is a third material that is at least similar to the material of the first body, and a mechanical connection is made between the sleeve and the second body. The mechanical connection has a locking abutment where the surface of the sleeve is angled toward the end of the second body that is in the union, and this angled surface of the sleeve abuts the second body. A first connection substance is positioned between the sleeve and the first body, and a second connection substance is positioned between the sleeve and the second body.
Abstract:
Zum Schutz von Pipelines (10) vor Beschädigung, insbesondere durch Bauarbeiten in der Nähe der Pipelines, wird ein Überwachungssystem eingesetzt. Zum Schutz vor Korrosion nutzt die Pipeline (10) ein Kathodenschutzsystem (20), das eine Anzahl an im Erdboden angeordneten Erdstäben (21) umfasst, die jeweils elektrisch mit dem Erdboden verbunden sind und elektrisch mit der mit dem Erdboden in Verbindung stehenden Pipeline (10) gekoppelt sind. Um die Komplexität des Pipelinesystems hinsichtlich einer Kommunikationsinfrastruktur gering zu halten, erfolgt eine Kommunikation zwischen Kommunikationseinrichtungen (30) über die Pipeline (10) selbst. Die Kommunikationseinrichtungen (30) umfassen Sensoreinheiten (40) und Zugangsknoten (32) zu einer zentralen Verarbeitungseinheit (33). Entlang der Pipeline angeordnete Sensoreinheiten (40) dienen der Erfassung von Signalen und werden aus dem Kathodenschutzsystem (20) mit Energie versorgt. Hierdurch ist keine separate Energieversorgung notwendig. Um vollständig aus dem Kathodenschutzsystem (20) mit Energie versorgt werden zu können, ist jede der energieautarken Sensoreinheiten (40) mit solchen Komponenten ausgestattet, die eine Kommunikation mit geringem komplexen Modulationsverfahren erlauben. Durch die Signalverarbeitung detektierter Bodenerschütterung und eine Klassifikation werden lediglich als kritisch erachtete Ereignisse in Gestalt von Alarmnachrichten an die Zugangsknoten (32) übertragen.
Abstract:
Mechanical fastening device for cathodic protection of an insulated pipeline (1), comprising: a fastening ring (6) of diameter to fit around the insulated pipeline, means (7) for electrical contact, and means (8) for fastening of, or connection to, a sacrificial anode, distinguished in that the means (7) for electrical contact are in the form of bolts that can be screwed through the fastening ring and the insulating coating of the pipeline, to good electrical contact with the pipeline (1), as the length of the bolts and the fastening ring are adapted such that bolts are kept pre-tensioned in good electrical contact with the pipeline in the full range of pressure and temperature in the pipeline and the surroundings.
Abstract:
The present invention is related to a system for measuring the state of corrosion of a buried metallic structure, such as a pipe line, characterized in that said measurement system allows said corrosion measurement simultaneously and continuously in time on several locations of said buried structure. The measurement system comprises a measuring cable (1), itself comprising several current electrodes (2) and several measuring electrodes (3), several addressable switching devices (20) and an electrical bus (6), a reference electrode (5) and a control system (4) comprising an embedded controller (8), an interface board (9) and a measurement board (7), wherein said measurement board (7) comprises an AC and/or DC voltage generator (50) and a voltage measurement device (51). The present invention is also related to the use of said measurement system for various corrosion measurements and for a number of applications not related to corrosion.
Abstract:
A fluid line component for a subsea umbilical has two metal tubes (4) joined to form a longer component, each tube (4) being coated with a protective layer (9) along their length except at the joint (10) between the two tubes (4), wherein a sacrificial anode material (11) is provided at the joint (10).