Schematic of hot tapping procedure are also available that allow a hot tap to be performed by a single operator, without additional blocking or bracing. Describe the asgard subsea compression project hot tap. A diverless process of tapping a pressurized subsea pipeline without removing the pipeline from service. Furmanite ipsco specialist hot tapping and line stopping. A hot tap shall not be considered a routine procedure, but shall be used only when there is no practical alternative. Hydratights hot and cold tapping service provides the solution to plant and pipeline modifications without the need to decommission, thus reducing plant downtime. The technique involve the installation of a valve module and hot tapping equipment remotely operated from a support vessel, and provide a. The tapping process is remotely controlled by a tdw technician, via a laptop from the deck of the dsv. Pdf subsea gas pipeline risk assessment during hot tapping. Technical support engineer hot tapping doha, qatar. Hot tapping is a high pressure intervention and the mirage range of hot tapping machines can help towards a safe and effective solution. The first use of the remote hot tap technology was the tampen link hot tap in 2008. The process involves attaching branch connections and cutting holes into the operating.
Hot tapping is a technique which allows new fields to be tiedin into existing subsea pipelines while those pipelines remain under normal operating conditions. Pipeline repair and hot tapping epoxy grout technical data. Kbss engineering is able to swiftly mobilise experienced personnel and high quality equipment to provide hot tapping solutions on your project. Abandonment operations were a result of hurricane ike generated wind and waves that toppled and submerged the vr 122 platform b structure. When pilot is completely through stop rotation and advance to allow uwires to drop. No need for loss of production or supply to other areas additional branches allowing supply to and from other areas of plant etc.
Our hot tap procedures follow methodical steps due to the specialized nature. Pdf subsea gas pipeline risk assessment during hot. Hot tapping is one method to connect new pipeline to. Whether hot tapping a pressurized pipe system, storage tank, pipe elbow, blind flange or containment wall you can count on our. This paper examines the risk to subsea gas pipeline during hot tapping installation process. This paper describes the dry hyperbaric gma weld procedure development and qualification performed in the laboratory, using the corrosion resistant alloy consumable filler material alloy 59, for the remote hot tapping application using the retrofit tee. Feb 12, 2016 exhibit 2 provides a general schematic of a hot tapping procedure. Pdf temperature prediction in hot tapping process for. Pipe lift frames are lowered and landed onto the pipeline spaced from a chosen location. Hot tapping and line stopping fittings, equipment and. Piggable tools provide pipeline pressure isolation, allowing repairs, maintenance or modification of a pressurized pipeline in a safe, convenient and cost effective manner. Subsea applications bring new and unique challenges due to the need for diver intervention and pressure variations at depth. Hot taps or hot tapping is the ability to safely tie into a pressurized system, by drilling or cutting, while it is on stream and under pressure.
Hot tapping is a method of making a connection into an existing pipe or vessel which is still under pressure or live. Tapping fittings like weldolet, reinforced branch or split tee. This ensures that we use the optimal process for maintenance and repairs required to make safe entry into pressurised pipelines. Since these subsea developments are moving further offshore and into deeper waters, the technical challenges of such pro. Hot tapping is one method to connect new pipeline to existing pipeline while they remain in service. Subsea and topside applications smart tap mechanical hot tap fitting our smart tap is a split, mechanical hot tap fitting that provides a flanged branch for hot tapping an existing subsea pipeline and tyingin a new lateral pipeline. Hot tapping avoids product loss, methane emissions, and disruption of service. Other drills may be used in different operations, however, the hydraulic drill allows for use underwater. Hydratights hot and cold tapping service provides the solution to plant and pipeline modifications without the need to decommission, thus reducing plant downtime hot tapping of pipelines under operating pressure.
Tonisco system oy is over 45year old finnish company specialized in hot tapping and line stopping. Pdf this paper examines the risk to subsea gas pipeline during hottapping installation process. Tonisco has a wide range of hot tapping equipment for various needs. Split tees often to be used as branch and main pipe has the same. Describe the procedure of hot tapping and plugging. Hot tapping is a specialist technique employed by furmanite ipsco for making a connec. Feb 05, 2015 pipeline hot tap hot tapping is an alternative technique that allows the connection to be made without shutting down the system and venting gas to the atmosphere. Connect the fitting on the existing pipeline by welding steel, bolting cast iron, or bonding plastic and install the valve. Hot tapping is also referred to as line tapping, pressure tapping, pressure cutting, and side cutting. Hot tapping and line stopping fittings, equipment and field. For tapping into existing subsea tees, there is no requirement for a hot tap fitting, the subsea 1200rc can be readily deployed and hooked up to the isolation valve with a mechanical connector. Hot tapping or pressure tapping, is the method of making a connection to existing piping or pressure vessels without the interrupting or emptying of that section of pipe or vessel. This is the process of breaking into a live pipeline without interrupting the flow, in order to provide a pipeline branch for potential diversion of the flow in either direction or for connecting product compression systems to enhance flow in older wells. Regardless of the material, carber has the experience and equipment necessary to fulfill your cold hot tapping and line stopping needs.
National subsea research initiative subsea hot taps provide a potential solution for lower cost access the pipelineflowline arterial network. Abstract a technique for remote hot tapping into subsea pipelines without the use of divers has been developed. Animation of gas pipeline hot tapping and plugging using ravetti equipment. Download brochure register now request an inhouse proposal. Temperature prediction in hot tapping process for high pressure pipeline. As a result there will be a new completely welded outlet. We also specialize in hot tapping design, manufacturing, and sales of pipeline tapping and plugging products.
Chairman james woods, subsea execution team lead, shell uk. Tonisco hot tapping valves are designed to be used only once. Us6290431b1 diverless subsea hot tap system with lateral. Pipeline repair and hot tapping epoxy grout technical data sheet uses of namco epoxies. Always refer to users approved installation procedure and equipment. Since the start of the modern subsea offshore oil industry the requirement to join, modify and extend pipelines underwater has been an operational requirement. As past experience shows, removal of marine growth coverage is both expensive and time consuming. Industryleading innovations used in our machines include a helical gear drive located as close to the cutting head as possible that ensures maximum efficiency, rotary pressure seals, and four fixed feeds. Hydratights hot tapping and cold tapping service allows you to meet deadlines safely and with minimum disruption to production. Safety manuals and procedural outlines are available from the american petroleum institute api, american society. Exhibit 2 provides a general schematic of a hot tapping procedure. An appraisal of the relative merits and risks of grouted, mechanical and welded assemblies.
Hot tapping is an alternative technique that allows the connection to be made. This allows development of marginal fields and efficient use of the existing in. The process includes the steps of lowering and landing a measurement tool onto the pipeline in. Can be performed with out the need to shut down the plant. The system is operated by remote control from a laptop onboard a diving support vessel dsv.
What is a hot tap, why it is made and how to make a hot. Introduction to the hot tapping procedure with video. Full range of topside production equipment from the wellhead to the pipeline. Preparation of work procedure, risk assessment, job schedule, method statements for each job of different services. Figure 99 hot tap cutting unit seatap clear well subsea ltd. The primary equipment for a typical hot tap application includes a drilling machine, a branch fitting, and a valve. What is a hot tap, why it is made and how to make a hot tap.
Specific attention was paid to areas of concern prior to performing the formal weld procedure qualification work. Lee mclean, manufacturing manager, proserv discusses the importance of training and developing the next generation in the latest edition of east. This paper examines the risk to subsea gas pipeline during hottapping installation process. Hot tapping is a process of cutting holes into pipe, tanks, or any pressurized. The process includes the steps of lowering and landing a measurement tool onto the pipeline in order to check ovality and straightness of the pipeline. Introduction to the hot tapping procedure with video hot tapping, also known as pressure tapping, is the process of making connections to an existing pipeline, network or pressurised vessel without having to empty it beforehand. Team delivers asset integrity management solutions designed to optimize performance through an integrated, digitallyenabled and more predictive approach. Posted in uncategorized and tagged pipeline hot tap, subsea pipeline. Hydratights highly specialized hot tap service permits new branch connections to be made into a. The process includes the steps of lowering and landing a measurement tool onto the pipeline in order to check ovality and straightness of the pipeline with the measurement tool. Dec 27, 2017 hot tapping or pressure tapping, is the method of making a connection to existing piping or pressure vessels without the interrupting or emptying of that section of pipe or vessel. As with surface hot tapping, the pipeline should be isolated before any cutting commences and the process in subsea environments is very different. Furmanite hot tap and line stop contractor services brochure.
It should be noted that hot tapping of sour gas lines presents special health and metallurgical concerns and shall be done only to written operating company approved. Jan 26, 2014 a hot tap shall not be considered a routine procedure, but shall be used only when there is no practical alternative. Hot tapping is the process of drilling into a live pipeline within which in the. This project was a worldfirst in subsea technology, involving the use of remotelycontrolled hot tapping. Although in the majority of cases marine growth cover is removed from lift and discharge caissons, the present trend is to use rovs equipped with high pressure water jetting units. Using hot taps for in service pipeline connections contd exhibit 2. Fth, llc flying tigers hot tapping is primarily engaged in providing pipeline hot tapping and plugging services without shutting down the system or losing product.
Hot taps shall be installed by trained and experienced crews. Once the pipeline was successfully isolated, purged and cut, a mechanical connector with a blind flange was installed to terminate one end of the. Feb 05, 2016 hot tapping avoids product loss, methane emissions, and disruption of service. May 03, 20 animation of gas pipeline hot tapping and plugging using ravetti equipment. The technique involve the installation of a valve module and hottapping equipment remotely operated from a support vessel, and provide a cost effective option for tiein of new pipeline systems to existing infrastructure without turndown of production. Hot tapping innovators and pioneers as the worlds foremost authority and innovator in the field of hot tap design and installation, team provides custom and offtheshelf solutions to satisfy your unique project needs. The procedure shall provide a finished installation that is in compliance with all safety and code requirements. Procedure for welding or hot tapping on equipment in service. Stats conducted subsea hot tapping and plugging at two locations to facilitate the removal of a short section of pipework as part of a decommissioning project. Hot tapping is the controlled process of introducing access to the id of pipe. Subsea hot tapping for new pipeline tiein onepetro. Diverless subsea hot tap system williams field services. Hot tapping 08 free download as powerpoint presentation. Sep 18, 2001 a diverless process of tapping a pressurized subsea pipeline as set forth in claim 3 wherein power and control for said measurement tool, said hot tap fitting, said orientation frame, said hot tap machine and a torque tool or stud tensioner are all powered by a remote operating vehicle.
The importance of deposition measurement and simulation and design of subsea pipelines. This means that a pipe or tank can continue to be in operation whilst maintenance or modifications are being done to it. Install the hot tap machine through the permanent valve. Hot tapping and plugging in petroleum industries seminar.
The process involves cutting the mother pipe through a valve. Subsea hot taps sut society for underwater technology. A model 9 hydraulic power unit hpu 2000 psi, 12 gpm. The two hot tapping operations were successfully completed in august 2009 and constitute the worlds first remote subsea hot taps in addition to the two highest pressure 255 barg highest temperature 95. Over the last 10 years statoil has developed subsea remote hot tap technology. Hot tapping and plugging technology opens pathway for safe, efficient projects. Best in class reliability and zero obsolescence across full subsea control systems.
Hot tapping equipment is available for almost any pipeline size, pipe material, and pressure rating found in transmission and distribution systems. Introduction to hot tapping and line stopping standard. Technical support engineer hot tapping technical support engineer job sheet pdf english pdf document, 42. We deploy conventional to highly specialized inspection, condition assessment, maintenance and repair services that result in greater safety, reliability, and operational efficiency for your most critical assets. Abstract a technique for remote hottapping into subsea pipelines without the use of divers has been developed. Introduction to hot tapping and line stopping subsea. Pipeline hot tap hot tapping is an alternative technique that allows the connection to be made without shutting down the system and venting gas to the atmosphere. Hot tapping is a procedure using an underpressure drilling machine to cut a hole in an oper. Carber hot tap technicians are crosstrained to perform not only hot taps and line stops but other carber services as well.
The fitting effectively eliminates requirements for costly pipeline shut downs and expensive hyperbaric welding. Use of mechanical hot tap tee used extensively in other oil and gas regions installed base over 1,200 strips out major cost element from hot tapping. Pipeline hot tap installation subsea pipeline engineering. Fth, llc flying tigers hottapping is primarily engaged in providing pipeline hot tapping and plugging services without shutting down the system or losing product. Regardless of the material, carber has the experience and equipment necessary to fulfill your. Furmanite ipsco is able to perform hot taps and line stops. Hot tapping, or pressure tapping, is the method of making a connection to existing piping or pressure vessels without the interrupting or emptying of that section of pipe or vessel. After the new line is completed by hot tapping the sluice plate will be removed and the controlling opening welded shut. Furmanite ipscos hot tapping and line stopping techniques are geared to share in this ethos. By doing so, the hot tapping process is more accurate and diver.
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