{"id":76119,"date":"2019-10-02T15:31:06","date_gmt":"2019-10-02T13:31:06","guid":{"rendered":"https:\/\/dev.blejkan.ro\/?page_id=76119"},"modified":"2019-10-02T15:31:06","modified_gmt":"2019-10-02T13:31:06","slug":"sliplining-relining","status":"publish","type":"page","link":"https:\/\/www.blejkan.ro\/en\/offer-technologies\/sliplining-relining\/","title":{"rendered":"Sliplining (Relining)"},"content":{"rendered":"

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DESCRIPTION OF THE REHABILITATION METHOD USING SEGMENTAL PIPE SLIPLINING MADEOF GRP-MARPLAST<\/h2>\n<\/div>\n
<\/div>\n
\n

1. METHOD DESCRIPTION<\/strong>
\nThe rehabilitation method using segmental pipe sliplining consists in inserting short pipe segments inside the old pipeline. Depending on the type of the network and pipeline being rehabilitated, the liner is introduced through an existing manhole or an excavated insertion point.
\nThe shape of the lining segments match the existing pipeline cross-section: they can have a circular and non-circular cross-section.<\/p>\n

2. LINE INSTALLATION EQUIPMENT<\/strong><\/p>\n

    \n
  • sewer cleaning equipment (pressure truck);<\/li>\n
  • sewer inspection camera;<\/li>\n
  • pulling machine (pipe puller);<\/li>\n
  • by-passing unit (pumps, hoses);<\/li>\n
  • platform truck for transportation of the liner (segments); \u0375 hoisting crane (or container truck with a hoist);<\/li>\n
  • pumps for feeding grout;<\/li>\n
  • sewer ventilation unit;<\/li>\n
  • pneumatic fretsaw;<\/li>\n
  • pneumatic jigsaw;<\/li>\n
  • testing equipment.<\/li>\n<\/ul>\n

    3. PREPARATION TO INSTALLATION<\/strong>
    \nAssessment of the sewer\u2019s technical condition<\/strong>
    \nBefore starting rehabilitation, the pipeline is cleaned using a hydrodynamic sewer cleaning unit mounted on a truck. Then the pipeline is inspected using a remotely controlled camera. The video footage is used for preparing a detailed digital report on the pipeline\u2019s technical condition. The report is a base for classifying the sewer\u2019s technical condition.
    \nChoice of the rehabilitation method<\/strong>
    \nThe rehabilitation method depends on the technical condition class and damage degree. After the assessment of the sewer\u2019s technical condition, geodetic data have to be analyzed, including ground water level compared to the base of the sewer, motor traffic in the area, and other parameters that impact parameters of the selected liner.
    \nStorage and transport to the site<\/strong>
    \nSegmental liner is delivered to a storage yard and supplied to the site in small batches.<\/p>\n

    4. INSTALLATION OF THE LINER<\/strong>
    \nIndividual rehabilitation liner segments are inserted into the sewer through existing manholes (in case of segments up to 0.5 m long and DN 600 mm in diameter) or through excavated insertion points, using a hoisting device matching the weight of the segments.
    \nAfterwards, the segments are moved to the installation point manually, using a slide or a special trolley. They are connected using a seal placed in a socket. They should be aligned with the center of the existing pipeline.
    \nLiner segments smaller than 500 mm can be connected manually using special equipment. With larger sizes manual hoists, levers, and presses have to be used. During connection operations the segments\u2019 connection surfaces should be protected against damage. Do not apply force to any point or small area of a bare segment end.
    \nBefore connecting two segments, mark the required spigot insertion depth on the bare end of the section. Only complete insertion of the spigot guarantees secure and tight connection. Sealing elements in the sockets are subject to high pressure forces, so mechanical devices should be used for connecting segments. Before connecting two segments, mark the required spigot insertion depth on the bare end of the section. Only complete insertion of the spigot guarantees secure and tight connection. Sealing elements in the sockets are subject to high pressure forces, so mechanical devices should be used for connecting segments.
    \nConnecting house drains to man-accessible sewers<\/strong>
    \nUsing a pneumatic fretsaw, make an opening in the point where the house drain is to be connected to the segmental liner. Then, using a pneumatic jigsaw, cut an opening matching the inner diameter of the house drain pipe.<\/p>\n

    5. FILLING THE EMPTY SPACE<\/strong>
    \nWhen the section is ready, the ends are closed and the cement mortar (after a recipe designed accordingly) is introduced to flow gently between the two walls. For ease of filling (careful not to lift the liner through floating by the mortar), you can drill holes in the inner shell wall or use existing house connections.
    \nThe mortar must be injected at a pressure that does not cause the maximum buckling tension to be exceeded for the pipe so that it does not collapse. It is especially important when rehabilitating pipes with large diameter and reduced circumferential stiffness. While sealing the pipe gap, place the spacers inside the segmented lining, preventing its distortion as a result of the mortar pressure.<\/p>\n

    6. INSPECTION<\/strong>
    \nTV Inspection<\/strong>
    \nAfter the installation and opening connections, acceptance TV inspection (including VHS or CD recording) is carried out. Inspection report is also prepared.
    \nTests<\/strong>
    \nAccording to EN ISO 11296-1, 13566-5 and EN 1610<\/p>\n

    7. CORRECTION OF FLAWS<\/strong>
    \nFlaws are corrected using a robot controlled via a camera or \/ and inserting and gluing short pipe sections.<\/p>\n<\/div>\n

    [\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

    [vc_row][vc_column width=”1\/1″][vc_column_text] DESCRIPTION OF THE REHABILITATION METHOD USING SEGMENTAL PIPE SLIPLINING MADEOF GRP-MARPLAST 1. METHOD DESCRIPTION The rehabilitation method using […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":75181,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-76119","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/pages\/76119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/comments?post=76119"}],"version-history":[{"count":0,"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/pages\/76119\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/pages\/75181"}],"wp:attachment":[{"href":"https:\/\/www.blejkan.ro\/en\/wp-json\/wp\/v2\/media?parent=76119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}