{"id":75272,"date":"2019-05-07T12:56:58","date_gmt":"2019-05-07T10:56:58","guid":{"rendered":"https:\/\/blejkan.de\/renowacja-wykladzina-z-rur-scisle-pasowanych-pvc-u\/"},"modified":"2020-01-24T12:21:46","modified_gmt":"2020-01-24T11:21:46","slug":"rehabilitation-with-close-fit-pvc-u-pipe-lining","status":"publish","type":"page","link":"https:\/\/www.blejkan.de\/en\/rehabilitation-with-close-fit-pvc-u-pipe-lining\/","title":{"rendered":"Rehabilitation with close-fit PVC-U pipe lining"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row row_height_percent=&#8221;0&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;3&#8243; column_width_percent=&#8221;100&#8243; border_color=&#8221;accent&#8221; border_style=&#8221;solid&#8221; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; css=&#8221;.vc_custom_1548944632644{border-top-width: 12px !important;}&#8221;][vc_column width=&#8221;1\/1&#8243;][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243; text_weight=&#8221;300&#8243; subheading=&#8221;in accordance with PN-EN 752-2; 752-5, 13689; PN-EN ISO 11296-1 and 11296-3.&#8221;]TECHNICAL DESCRIPTION OF REHABILITATION WITH CLOSE-FIT PVC-U PIPE LINING[\/vc_custom_heading][vc_separator sep_color=&#8221;color-gyho&#8221;][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/2&#8243;][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243;]MATERIAL[\/vc_custom_heading][vc_column_text]Rehabilitation of sewers with close-fit pipe lining involves the use of modified polyvinyl chloride (PVC) pipes manufactured at a reduced dimension. Due to its construction and parameters PVC-U lining is used only to rehabilitate gravity sewers. Appropriate static strength calculations determine the selection of the lining\u2019s ring stiffness (SN 4 to SN 8).[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243;]LINER INSTALLATION EQUIPMENT[\/vc_custom_heading][uncode_list icon=&#8221;fa fa-check&#8221;]<\/p>\n<ul>\n<li>cleaning machine (jetting truck)<\/li>\n<li>remote controlled inspection camera<\/li>\n<li>remote controlled milling equipment<\/li>\n<li>guiding rollers<\/li>\n<li>pipe-sauna (for heating lining before insertion)<\/li>\n<li>hoisting machine (winch)<\/li>\n<li>steam generator<\/li>\n<li>by-pass equipment (pumps, hoses)<\/li>\n<\/ul>\n<p>[\/uncode_list][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243;]PREPARATION FOR THE INSTALLATION[\/vc_custom_heading][vc_column_text]TECHNICAL EVALUATION OF THE SEWER<br \/>\nBefore the rehabilitation the pipeline is jet-cleaned with a sewer cleaning machine placed on a truck. After that the pipeline is inspected with a remote-controlled camera. The analysis of the video from the sewer inspection forms the basis to create a detailed computer report on the technical condition of the pipe. On the basis of the above data the sewer is classified depending on its technical condition.<\/p>\n<p>SELECTING THE REHABILITATION METHOD<br \/>\nDepending on how the sewer is damaged or destroyed, and its classification to a specific group, an appropriate rehabilitation method is selected. After the evaluation of the sewer\u2019s technical condition one should analyze geodetic data, groundwater level with respect to the base of the sewer, road traffic exposure, and other parameters that have influence on the selection of parameters of the liner that is to be used. On this basis, knowing the Young (E) modulus characteristic for the recommended carrier, during the design phase the designer can select a PVC-U close-fit pipe that has the right thickness (given the load on the ring stiffness) and diameter.<\/p>\n<p>STORAGE AND TRANSPORTATION TO THE CONSTRUCTION SITE<\/p>\n<p>The lining is wound on a spool and delivered to the construction warehouse using normal means of transport. Spools are stored vertically, on a hardened service yard. The lining is delivered to the insertion point in a pipe-sauna, to prevent the cooling of the lining.[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243;]INSTALLATION[\/vc_custom_heading][vc_column_text]To install the pipe liner in the rehabilitated sewer it must be plugged above the section undergoing repair. If the flow of water is large, before the plug a pump or set of pumps is installed, to create a by-pass and remove wastewater beyond the rehabilitated section.<br \/>\nThen, into the cleaned and prepared sewer PVC-U lining, preheated in the pipe-sauna, is inserted using a winch with controllable and recorded towing force.<br \/>\nOnce the lining has been inserted steam plugs are installed in a special construction at the start and end manholes. Once the plugs are in place the lining is evenly heated up to ca. 90\u00b0C using hot steam. Having heated the lining, it must be inflated using compressed air at a pressure of 0.5 bar. Following that the lining is cooled down using cold air. When the lining has been cooled down the steam plugs are cut off and the lining undergoes CCTV inspection. All lateral drains are connected directly, without any T-pipes, using a milling robot.<br \/>\nDuring the process installation parameters, such as temperature of preheated lining, towing forces, and all temperature readings from control points during the main heating cycle are recorded.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243;]CONTROL[\/vc_custom_heading][vc_column_text]<strong>CCTV INSPECTION<\/strong><\/p>\n<p>Once the installation is finished and drains are opened a CCTV acceptance inspection is made and recorded on a DVD or another storage medium. At the same time an inspection report is prepared.<\/p>\n<p><strong>TESTS<\/strong><\/p>\n<p>In accordance with PN-EN ISO 11296-1, 11296-4 and PN-EN 1610.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/1&#8243;][vc_separator sep_color=&#8221;color-gyho&#8221;][vc_custom_heading sub_lead=&#8221;yes&#8221; subheading=&#8221;Rehabilitation using PVC-U close-fit pipes is recommended for urgent repairs when fixing leaks of sewage networks in urbanized areas, due to the quick installation process. Diameter range: DN100 \u2013 DN400 Gravity sewer networks.&#8221;]APPLICATION[\/vc_custom_heading][vc_separator sep_color=&#8221;color-gyho&#8221;][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243;]DEFECT REMEDIATION[\/vc_custom_heading][vc_column_text]Any defects are made good with the help of a camera-controlled robot and\/or by patching with short sections of the pipe liner.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=&#8221;1\/1&#8243;][uncode_block id=&#8221;74944&#8243;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row row_height_percent=&#8221;0&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;3&#8243; column_width_percent=&#8221;100&#8243; border_color=&#8221;accent&#8221; border_style=&#8221;solid&#8221; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; css=&#8221;.vc_custom_1548944632644{border-top-width: 12px !important;}&#8221;][vc_column width=&#8221;1\/1&#8243;][vc_custom_heading heading_semantic=&#8221;h3&#8243; text_size=&#8221;h3&#8243; text_weight=&#8221;300&#8243; subheading=&#8221;in accordance with PN-EN [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-75272","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.blejkan.de\/en\/wp-json\/wp\/v2\/pages\/75272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.blejkan.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.blejkan.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.blejkan.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.blejkan.de\/en\/wp-json\/wp\/v2\/comments?post=75272"}],"version-history":[{"count":0,"href":"https:\/\/www.blejkan.de\/en\/wp-json\/wp\/v2\/pages\/75272\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.blejkan.de\/en\/wp-json\/wp\/v2\/media?parent=75272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}