Industry standards, regulations and related publications. The joints ensure cathodic protection and electrical safety in pipelines. Insulated joints in pipelines may be subject to overvoltage failure. Request pdf isolating joint failure monolithic isolating joints of buried pipelines are fundamental to ensure the performance of a cp system. Overvoltage protection of insulated joints in pipelines. They are most commonly used when the cathodic protection is present to prevent any interference with corrosion control. Applications monolithic insulating joints are used for the sectioning of main pipelines gas, oil and water and service lines.
Import data and price of monolithic isolation joints zauba. The electrostop is coated internally and externally to prevent corrosion and is 100% hydrostatically, electrically and weld tested. The electrostop monolithic isolation joints are a leakproof, maintenancefree and long lasting block against the flow of electric current in all piping systems. Scope this part of ipsmtp750 covers the minimum requirements for the design, fabrication and inspection of monolithic insulating joints, for electrical isolation of pipelines from plants andor other. Isolation joint material is typically asphaltimpregnated fiberboard, although plastic, cork, rubber, and neoprene are also available. Monolitic isolation fitting specification monolithic isolation fittings shall be boltless and completely factory assembled in accordance with the appropriate requirements ofastm, api, din and bs codes. The electrojoint mij eliminates the risk of failure due to improper field assembly of traditional flange components by providing a complete coated isolation system that simply requires two butt welds on. Introduction the monolithic isolation joint mij can be the most robust isolation and sealing solution in a pipeline. They can be ordered in whatever pipe size is required, and sealed easily and safely without the need for welding. Alfa monolithic isolation joints are boltless and completely factory assembled in accordance with the appropriate requirements of astm, api, din and bs codes. Select a product acrms current rating that is above the expected site value. The electrostoptm monolithic isolation fittings will serve as a positive leak proof, long lasting block against the flow of electric current in all piping systems.
Provide an isolation joint between the foundation wall and slab floor where vertical movement is expected. Many cp professionals often wonder about the pros and cons of using insulating flange kits over monolithic isolation joints. Overvoltage protection of insulated joints in pipelines dairyland. For onshore projects, an isolation joint is used to limit the spread and hence cost of cathodic protection current to those pipes that need to be effectively and economically protected by. Monolithic insulating joints are used to electrically isolate pipeline segments. Isolation joints in pipelines may be subject to overvoltage failure due to lightning. When you bury the electrostoptm isolation fitting you bury maintenance costs forever an especially important feature. An insulation joint is a boltless structure that provides electrical resistance between the pipeline sections and adjoining structures, thus improving the effectiveness of the catholic protection system cp systems. Vkvc monolithic insulating joints ij insulating joints are used on pipelines to provide electrical isolation to prevent corrosion. As the name implies, a monolithic isolation joint appears as a solid block. Introduction alfa engineering monolithic isolation joints. Gpt engineers and manufactures high quality prefabricated isolating flanges and maintenance free monolithic isolation joints to block the flow of current. View detailed import data, price, monthly trends, major importing countries, major ports of monolithic isolation joints. Isojoint monolithic isolating joint by aps farwest.
The dielectric isolation material is made of a thermosetting fiberglass epoxy material. Monolithic insulation joints are welded prefabricated 3 piece unions that are for pipeline electrical sectioning. Monolithic insulating joint provides electrical insulation to the pipeline and prevents electrochemical reactions thus saving from corrosion. It can seem a simple piece of equipment because it has no moving parts and is supplied fully assembled and ready to weld into the pipeline. The annuls between monolithic isolation joint and clamp is filled with an epoxy grout and internal non conductive liner is provided for electrical isolation. Monolithic isolation joints, may be a stock item or built to spec. These joints are monoblock, they cannot be dismantled and they do not require any. They have the facilities to manufacture any size joint from. Isolation joints joints that isolate the slab from a wall, column or drainpipe. How does one perform due diligence on a sealed, discrete system to ensure it will serve well over the asset lifecycle.
Are boltless, rigid pipeline components, factory welded and ready for installation at site. Manufacturer of leak sealing of monolithic isolation. Bvm engineers manufacturer of quick opening closure. The monolithic isolation joint is a sealed system, which obscures the individual components inside. Our product range is extensive, as you will see in this website, and our services include a wide variety of cathodic protection engineering and installation offerings. View detailed import data, price, monthly trends, major importing countries, major ports of monolithic insulation joints under hs code 73079990. Ijas limited was formed in 1996 to act as the uk distributor for alfa engineering, a company based near modena, italy.
The monolithic insulating joint was developed as an alternative to insulating flange kits. Monolithic isolating joints do not require maintenance, they improve the cathodic protection of gas, water and petroleum pipelines. Isolation joints have one very simple purposethey completely isolate the slab from something else. Overvoltage protection of isolation joints in pipelines. Ijas ltd the main supplier of monolithic isolation. However, the monolithic isolation joint can also be the weak link in a piping system if the proper steps are not taken in the selection, verification and qualification processes. G10 isolating ring g10 isolating ring isolating filling material zone a. They electrically insulate 2 sections of pipeline for transportation of hydrocarbon, gas or water. Monolithic insulating joints, pipeline insulating joints. Monolithic insulating joints are used for the sectioning of main pipelines and service pipelines to ensure adequate cathodic protection and electrical safety. Monolithic insulating joint insulating joints are used for cathodic protection. Electrojoint monolithic isolation joints gpt industries. The clamp for each monolithic isolation joint is designed and manufactured with actual site dimensions.
Flange isolation and monolithic isolating joints nace by. After the slab has cured for several days, seal the joint by pouring polyurethane or similar caulk into the 12inch channel formed with a removable strip. Difference between a contraction joint, isolation joint. Monolithic insulating joints production meccanica segrino. Isolating joint failure for cathodic protection materials performance. The usage of monolithic isolating devices in cathodically protected systems is considered by nace sp02862007. The material of flange is compatible with monolithic isolation joint. Polarization probe for over 20 years, as the top pipefitting manufacturer in china which access to the eu ce certification and. The advantages of using the monolithic isolation joint is that this kind of joint avoids small parts such as gaskets and flanges, and can be produced to exacting standards of precision.
Introduction why to use a monolithic isolation joint corrosion destroys approximately 30% of the worlds annual production of steel. Established in 1956, farwest corrosion control company is a worldclass leader in cathodic protection and corrosion control related products, solutions and services. Refer to aci 223r for guidance on isolation joints for slabs using. Import data and price of monolithic insulation joints. Established in 1981 from the business idea of two brothers thanks to their passion for mechanics, meccanica segrino can be considered a worldwide leading manufacturer of monolithic insulating joints for gas, water and other fluids insulation joints provide electrical isolation and cathodic protection in pipeline, tanks and pumping station where petroleum, gas and water are carrier fluid. Gpts new electrojoint monolithic isolation joint mij is a maintenancefree alternative to flanged pipeline connections appropriately sized and priced for gas distribution lines. Isolation joints are formed by placing preformed joint material next to the column or wall or standpipe prior to pouring the slab. Insulating flange kits versus monolithic isolating joints. Standardized and specialized designs are available, following some features. Materials design, selection and failure of monolithic. In defense of the monolithic isolation joint onepetro.
The electrostop eliminates short circuits and field assembly. What is the difference between a contraction joint, isolation joint, expansion joint, construction joint, and a cold joint. The correct location of a monolithic isolation joint results in saving. Monolithic insulting joint goodrich gasket industrial. Api 6fb rated the monolithic isolation joint 290f or 8c cause of pipeline failures lets avoid these situations and use smarter pipeline connections lack of skilled people in the trade gre gasket kit assembly gylonr gaskets causes of flange failures questions. Monolithic isolation joints provide electrical isolation between segments of linepipe. Corrosion destroys approximately 20% of the worlds annual production of steel. Monolithic insulating joint by goodrich gasket pvt ltd is a welded prefabricated 3piece union applicable for pipeline electrical sectioning and commonly used when the cathodic protection is present to prevent any interference in corrosion control.
Joints in concrete construction types and location of. A contraction joint is formed, sawed, or tooled groove in a concrete structure to create a weakened plane to regulate the location of cracking resulting from the dimensional change of different parts of the structure. Monolithic isolation joints mijs are one type of isolating device. The correct location of a monolithic isolation joint results in saving overall cost of corrosion control systems. Monolithic isolation joints and flange pipe connection gpt. Where you find pipelines for gas an oil distribution system, you will also find a range of alfa engineering isolation joints.
Electrostop monolithic isolation joints gpt industries. Contraction joint in concrete their location and construction 4. Monolithic isolation joint specification our monolithic isolation joints are manufactured at the alfa engineering facility an iso. Braun stahl pipe tec insulation joints type isg, type iml and type isn are monobloc or monolithic insulation joint. It is the essential pressure component necessary for steel pipeline cathodic protection system, broadly applicable to steel pipeline cathodic protection systems. The most uptodate, patented joint on the market, isojoint does not depend on the use of isolating sleeves and washers. The vatac monolithic insulation joint is a new generation developed product to resolve use problems of old insulating flange.
1075 440 256 1125 1169 557 1430 1399 1386 912 479 923 1111 1496 346 599 378 1367 167 676 112 427 34 941 519 965 313 739 475 1347 811 507 1303 495 532 1063 1299 348