The monolithic isolation joint shall be the electrostop isolation joint as manufactured by gpt. Isolation joint article about isolation joint by the free. For longterm dependability, experts choose the alfa monolithic isolation joint which is welded into place for a permanent solution. The safe isolation of plant and equipment this is a freetodownload, webfriendly version of hsg253 second edition, published 2006. Where you find pipelines for gas an oil distribution system, you will also find a range of alfa engineering isolation joints. Vibration isolation is the process of isolating an object, such as a piece of equipment, from the source of vibrations vibration is undesirable in many domains, primarily engineered systems and habitable spaces, and methods have been developed to prevent the transfer of vibration to such systems. An example is the joint that separates the floor slab from a column. 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. Pimenta and others published monolithic isolation joint failures find, read and cite all the research you need on. Sealing system shall be by two standard o ring seals. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. The dielectric isolation material shall be a high temp thermosetting fiberglass epoxy material.
Isolation joints are used to separate isolate adjacent structural members. Isolation joints are designed to minimise restraint on a slab from fixed elements such as columns, walls, bases or pits. A concrete expansion joint is also used to separate a concrete driveway or patio from a garage slab, sidewalk, stairway, lightpole or any other point or restraint. Monolithic isolation joints shall be bolt less and completely factory assembled in accordance with the appropriate requirements of astm, api, din and bs codes.
This version has been adapted for online use from hses current printed version. In addition, each joint is electrically tested to verify its insulating capability. This requires a continuing maintenance program during the entire life of the pipeline. Isolation joints form a separation of elements from the slab on. Date hs code description origin country port of discharge unit quantity value inr per unit inr sep 03 2015. The monolithic insulating joints produced by meccanica segrino are sold all over the world both directly and through local distributors. Alfa monolithic isolation joint installation and handling guide. You can buy the book at uk and most good bookshops. Import data and price of monolithic isolation joints zauba. Location and details of isolation joints will be shown on drawings. Pipeline insulated joints monolithic isolation joints. Unfortunately the use of these accessories has been difficult to carry out in discharge lines of wells with high pressure and temperature and sour service conditions, mainly because the materials of the seal and dielectric isolation systems can suffer damages associated with the. 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. Flange isolation and monolithic isolating joints nace by.
They have the facilities to manufacture any size joint from. It is recommended that the flanges be wrapped or a dirt guard be used to prevent foreign material from shorting out the. Monolithic insulating joints production meccanica segrino. Monolithic isolation joint is o jo i n t fo r su p e r i o r ca t h o d i c pr o t e c t i o n iso jo i n t is a true monolithic isolating joint which effectively and efficiently stops short circuits and stray currents from damaging pipelines and equipment. Materials design, selection and failure of monolithic. Isolation joints are sometimes called expansion or contraction joints. They can be ordered in whatever pipe size is required, and sealed easily and safely without the need for welding. Iso jo i n t employs one or more, preassembled pressure seals and isolating. The usage of monolithic isolating devices in cathodically protected systems is considered by nace sp02862007.
Please contact factory for nominal diameters, pressures up to 2500 ansi, temperatures up to 320 f 160 c and electrical characteristics not shown. Aci committee 302, guide for concrete floor and slab construction, aci 302. Isolation joints are formed by placing preformed joint material next to the column or wall or standpipe prior to pouring the slab. Expansion joints are fulldepth, fullwidth joints placed at regular intervals along the pavement, usually 50 to 500 ft 15 150 m with contraction joints in between.
Pipeline insulating joint specification pipeline insulating joints shall be boltless and completely factory assembled in accordance with the appropriate requirements of asme, astm, api, din and bs codes. Corrosion destroys approximately 20% of the worlds annual production of steel. Each joint manufactured by tube turns is completely factory assembled and hydrostatically tested to 2225 psi or 3350 psi before shipment. Monolithic insulating joints are used for the sectioning of main pipelines gas, oil and water and service lines. We are committed to total quality customer satisfaction by. Industry proven double oring seals standard available with triple oring seals based on application standard oring material nbr other materials optional based on application oring design in accordance with astm d2240, astm d412, astm d395. Meter service isobloc monolithic isolating joints are supplied with bevel or thread ends and can be also be supplied prefitted with a ball valve. From aci committee 224, joints in concrete construction, aci 224. Ijas limited was formed in 1996 to act as the uk distributor for alfa engineering, a company based near modena, italy. Applications monolithic insulating joints are used for the sectioning of main pipelines gas, oil and water and service lines.
View detailed import data, price, monthly trends, major importing countries, major ports of monolithic isolation joints. The monolithic insulation joints are designed to meet and satisfy very high pressure services up to 20,000 psi. Imports of monolithic isolation joints in usa manufacturers of monolithic isolation joints buyers of monolithic isolation joints in usa. Technical seminar for cathodic protection to gogc design. Polarization probe for over 20 years, as the top pipefitting manufacturer in china which access to the eu ce certification and.
Global supply line can supply monolithic insulating joints from stock in ansi 150 to 2500. The correct location of a monolithic isolation joint results in saving. Ijas ltd the main supplier of monolithic isolation. Internal and perimeter columns when tied into the slab offer restraint and hence give rise to cracking if they are not isolated from the main slab. Concrete expansion joints what is a concrete isolation or.
Monolithic isolation joints and flange pipe connection. Description of components term isolation joint barrier consists of a laminated pliable membrane which has a term sealant barrier adhesive on both sides. They are sometimes placed at the last minute by necessity because of weather or a machine breakdown. This can be done using sawn or boxed out isolation joints fig. Insulation joints braunstahl in kehl am rhein germany. Joint isolation detail expansion isolation joint treatment not to scale 607 cjg fl012. Why to use a monolithic isolation joint corrosion destroys approximately 30% of the worlds annual production of steel. An isolation joint allows for differential movement in the vertical plane due to loading conditions or uneven settlement. Isolation joints are designed for direct welding into the pipeline by qualified welders.
Monolithic insulating joints are used to electrically isolate pipeline segments. Isolation joint material is typically asphaltimpregnated fiberboard, although plastic, cork, rubber, and neoprene are also available. Branch pipe a of isolating vibration edit branch pipe a of isolating vibration is a part of a tube with elastic walls for reflection and absorption of waves of the oscillatory energy extending from the working pump over wall of. A concrete expansion joint is also used to separate a concrete driveway or patio from a garage slab.
Monolithic insulating joints, pipeline insulating joints. We are strongly convinced that in the field of monolithic insulating joints its important to be specialized in order to provide product quality, timely delivery and flexibility, the. Monolithic isolation joints and flange pipe connection gpt. Term isolation joint barrier is a nonstructural barrier which, when properly constructed as part of the building envelope, acts as a barrier to termites entering the structure through cold joints. Project scope the scope of work includes the construction and installation of. Usually manufactured from phenolic based materials, however customer requirements can be met. The monolithic isolating joints manufactured by nuovagiungas do not require any kind of maintenance, and they improve the cathodic protection of gas, water and petroleum pipelines with important savings in. Monolithic isolation joint specification our monolithic isolation joints are manufactured at the alfa engineering facility an iso. Still, think ahead while pouring your slab to choose a spot where a contraction joint may be effective. This solution reduces installation time and costs where a valve is to be used and ensures better sealing between the joint and the valve compared to two separate parts being assembled in the field. The term isolation joint also applies to joints around inpavement structures such as drainage inlets, manholes, footings, and lighting structures. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete. Monolithic isolating joints do not require maintenance, they improve the cathodic protection of gas, water and petroleum pipelines.
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. Monolithic insulating joints are used for the sectioning of. Wherever practical, the vkvc insulating joint is intended to be installed above the ground, or in an inspection pit in dry conditions to limit the possibility of electrical bridging across the joint. And constant visual inspections of above ground isolation gaskets are necessary to check for shorts in the gaskets. We can deliver any other nonstandard technical feature per your detailed specification. Concrete expansion joints what is a concrete isolation. There are three basic joint types used in concrete pavement. Term isolation joint barrier is a peel and stick termite barrier composite used for sealing isolation joints cold joints before pour of a new slab which butts against an interior slab. The joints ensure cathodic protection and electrical safety in pipelines. Term isolation joint by polyguard products health product declaration v2. Overview on monolithic insulating joints global supply line. For acceptance, the joint must show a minimum electrical resistance of 25 megohms when tested at vdc.
The most uptodate, patented joint on the market, isojoint does not depend on the use of isolating sleeves and washers. Type d ring type joint type d or rtj gaskets are made to fit the ring groove on ring type joint flanges. Isolation joint article about isolation joint by the. Ijas ltd the main supplier of monolithic isolation joints. Monolithic isolation joints, may be a stock item or built to spec. Electroflange joints provide electrical isolation for gas, water and petroleum pipelines. Monolithic isolation joints are the premium choice to provide cathodic protection along a pipeline. Electrostop monolithic isolation joints gpt industries.
A monolithic isolation stress joint is disclosed having a first conduit element, a first insulating joint assembly, and a stress joint connected to the first conduit element through the first insulating joint assembly. Technical information isolation joints are used where the slab needs to be able to move completely independently of fixed elements within the floor space. Backing rod positioned to provide an installed sealant depth that is equal to 50% of the joint. Specific design requirements for each type depend upon the joint s orientation to the direction of the roadway transverse or longitudinal. This specification includes the sheet membrane used for crack isolation joint bridging and as waterproofing in conjunction with tile and dimension stone installations suitable for commercial and residential interior applications. It is intended to be girth welded between two pipeline sections. Handling and installation of alfa monolithic isolation joints. Concrete isolation joints, or expansion joints, separate or isolate the concrete from other parts of the building structure like walls, footings, columns and piers. Electrical isolation coupling selection helical products co. Vibration isolation of unsupporting joint is realized in the device named branch pipe a of isolating vibration. The most uptodate, patented joint on the market, isojoint does not depend on the use of isolating sleeves and washers for bolts nor isolating gaskets or orings between flanges. Joint isolation detail floor to wall joint cover not to scale 607 cjg fl014. Isolation joint material should go all the way through the slab, starting at the.
Pdf monolithic isolation joint failures researchgate. Electrical isolation coupling selection on december 15, 2016 in articles, new posts, news selecting the right coupling when electrical isolation is a priority. A wellplanned construction joint may serve a double purpose as a control joint. Pipe couplings pca is a worldwide distributor of high quality monolithic isolating joints for the petrochemical industry.
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