{"id":37248,"date":"2024-06-11T14:06:01","date_gmt":"2024-06-11T14:06:01","guid":{"rendered":"https:\/\/constrat.gr\/?post_type=cpt_portfolio&#038;p=37248"},"modified":"2025-04-11T13:29:10","modified_gmt":"2025-04-11T13:29:10","slug":"ipostiriksi-ipiresiwn-tou-oak-ae-gia-to-etos-2019-pou-afora-tin-sintirisi-kai-parakolouthisi-twn-diktywn-kai-loipwn-egkatastasewn-kathws-kai-tiw-leitourgias-tou-ergastiriou-poiotikou-elegxou-tis-egkat","status":"publish","type":"cpt_portfolio","link":"https:\/\/constrat.gr\/en\/portfolio\/ipostiriksi-ipiresiwn-tou-oak-ae-gia-to-etos-2019-pou-afora-tin-sintirisi-kai-parakolouthisi-twn-diktywn-kai-loipwn-egkatastasewn-kathws-kai-tiw-leitourgias-tou-ergastiriou-poiotikou-elegxou-tis-egkat\/","title":{"rendered":"SUPPORT OF O.A.K. S.A. SERVICES FOR THE YEAR 2019 CONCERNING THE MAINTENANCE AND MONITORING OF NETWORKS AND OTHER INSTALLATIONS, AS WELL AS THE OPERATION OF THE QUALITY CONTROL LABORATORY OF THE WATER TREATMENT FACILITY OF THE E.E.N. APOSELEMI"},"content":{"rendered":"<div class=\"thedescr\">\n<h2><a href=\"https:\/\/constrat.gr\/wp-content\/uploads\/2024\/06\/Aposelemis-cover-_1.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-37249 size-full\" src=\"https:\/\/constrat.gr\/wp-content\/uploads\/2024\/06\/Aposelemis-cover-_1.jpg\" alt=\"\" width=\"709\" height=\"472\" srcset=\"https:\/\/constrat.gr\/wp-content\/uploads\/2024\/06\/Aposelemis-cover-_1.jpg 709w, https:\/\/constrat.gr\/wp-content\/uploads\/2024\/06\/Aposelemis-cover-_1-300x200.jpg 300w, https:\/\/constrat.gr\/wp-content\/uploads\/2024\/06\/Aposelemis-cover-_1-370x246.jpg 370w, https:\/\/constrat.gr\/wp-content\/uploads\/2024\/06\/Aposelemis-cover-_1-410x273.jpg 410w\" sizes=\"(max-width: 709px) 100vw, 709px\" \/><\/a><\/h2>\n<h2 class=\"perigrafi\">PROJECT DESCRIPTION<\/h2>\n<p style=\"text-align: justify;\">The subject of the service provision of <strong>CONSTRAT<\/strong> includes the support of the Directorate of Traffic and Hydraulic Works of\u00a0<strong>O.A.K. S.A.<\/strong>\u00a0for the\u00a0<strong>operation<\/strong>\u00a0and\u00a0<strong>maintenance<\/strong> of the hydro-irrigation networks, the hydraulic equipment\n\nof the pumping stations and the water treatment plants (Refineries \u2013 W.T.P.) of the water resources utilization projects,\n\nmanaged by the Organization.<\/p>\n<p style=\"text-align: justify;\">The support of the O.A.K. S.A.  services for the operation and maintenance of irrigations\n\nnetworks (pipelines, tanks, wells, operating and network protection systems, water supply sources, etc.) and the hydraulic\n\nequipment of pumping stations, water treatment plants and other supporting projects (access roads, surrounding areas, etc.)\n\nconcerning the areas of Aposelemis works, for the water supply of the Municipalities of Heraklion, Hersonissos and\n\nAgios Nikolaos.<\/p>\n<p style=\"text-align: justify;\">Constrat services, includes specific the\u00a0<strong>operation<\/strong>\u00a0and\u00a0<strong>maintenance <\/strong>of\u00a0<strong>Aposelemis Water Treatment Plant (W.T.P.)\u00a0<\/strong>in the context of management of the specific project. W.T.P.  Aposelemis is supplied with water from the\u00a0<strong>Aposelemis Water Barrier<\/strong>, which is the main infrastructure project for the water supply of the Municipalities of Heraklion, Hersonissos and Ag. Nicholas.<\/p>\n<p style=\"text-align: justify;\"><strong>PART<\/strong><strong>\u00a01<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>SUPPORT OF OAK S.A. SERVICES FOR THE MAINTENANCE AND MONITORING OF<\/strong><strong>N<\/strong><strong>\u00a0THE NETWORKS<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>AND OTHER HYDRAULIC INSTALLATIONS\u00a0<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>PART<\/strong><strong>\u00a02<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>SUPPORT OF OAK S.A. SERVICES FOR COVERING OPERATION NEEDS\u00a0<\/strong><strong>OF THE QUALITY CONTROL LABORATORY<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>IN APOSELEMIS WATER TREATMENT PLANT<\/strong><\/p>\n<p style=\"text-align: justify;\">Specifically, it concerns the\u00a0<strong>operation<\/strong>\u00a0and\u00a0<strong>maintenance<\/strong>\u00a0for hydraulic\u00a0<strong>hydraulic<\/strong>\u00a0and\u00a0<strong>electromechanical\u00a0<\/strong><strong>equipment <\/strong>of the main processes (ozonation, flocculation,\n\nsedimentation, refining, chlorination, fattening and dehydration of sludge produced) taking part in the operation of Aposelemis W.T.P, as well as the <strong>chemical building<\/strong> for the regulation of required doses of chemicals (flocculants, polyelectrolytes) added to the respective water treatment steps. The maintenance of\n\nthe hydraulic and electromechanical equipment of Apeselemis W.T.P. will take place in the context of preventing action \/ regular maintenance of the equipment,\n\nas well as the repair of the faults. Furthermore, for the fulfillment of the purpose and the efficiency of the entire Aposelemis projects, to wit, for the regular\n\nsupply of the municipalities of Heraklion, Hersonissos and Ag. Nicholas, with the best quality drinking water from the water barrier, is the safety, good and\n\neconomical function of maintaining the <strong>hydraulic networks\u00a0<\/strong>(central water pipelines from Aposelemi water barrier to W.T.P. and from W.T.P. to the\n\nmunicipalities tanks) of the\u00a0<strong>two (2) pumping stations\u00a0<\/strong>(the central water supply pipeline of the Municipality of Agios Nikolaos) and the <strong>FDEs (Stop and Control Chambers) <\/strong>of the central pipelines.<\/p>\n<p>The operation \u2013 maintenance concerns the following parts of the project:<\/p>\n<ul>\n<li><strong>From Aposelemis Water Barrier to Water Treatment Plants<\/strong><\/li>\n<li><strong>Water Treatment<\/strong><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">This section includes the 7,5km long aqueduct for the transport of natural water from the Aposelemis reservoir to the Water Treatment Plant.\n\nFor its construction were used insulated steel pipes \u00d81200 and \u00d81100, for the passage of which two tunnels with a total\n\nlength of 3.7km were used.<\/p>\n<ul>\n<li><strong>From Water Treatment Plants to Heraklion<\/strong><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">This section of the aqueduct was constructed, for the\u00a0<strong>transportation<\/strong>\u00a0and\u00a0<strong>distribution<\/strong>\u00a0for hydraulic\u00a0<strong>drinking water<\/strong>from the clean water tanks of the W.T.P. to the city of Heraklion and the intermediate areas. The aqueduct consists of the\n\nmain waterworks of 26km total length and is made of insulated steel tubes of \u00d8900 to \u00d81100, the transport lines to and\n\nfrom both the Shut-off and Checkout manholes, with a total length of 1.3km and diameter \u00d8900, connecting pipes to\n\nindividual consumers and the ecological supply pipeline of the Aposelemis River.<\/p>\n<p style=\"text-align: justify;\">The aqueduct operates naturally and supplies the areas of Agrians, Ascension, Gouves, Gournes, Karteros and\n\nthree main reservoirs of the city of Heraklion, with thepossibility of extending with another two, in the western part of the city.<\/p>\n<ul>\n<li><strong>From Water Treatment Plants to Agios Nikolaos<\/strong><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">The section towards Agios Nikolaos was constructed for the supply of drinking water in the city of Agios Nikolaos and certain intermediate areas, by the W.T.P.\n\nThe aqueduct comprises the main water supply pipeline, with a total length of 37 km, which is made of insulated steel pipes, cross section from \u00d8400 to\n\n\u00d8900 and connecting pipes to the reservoirs of the water supply areas. It also includes the 5.200m3 Tunnel \u2013 Vrachasi reservoir, the D6 terminal of Agios\n\nNikolaos, with a capacity of 520m3 and two pumping stations, one inside the W.T.P. and one in the Sissi area.<\/p>\n<p style=\"text-align: justify;\">In particular, the actions required to support the Development Organization of Crete S.A. services concern:<\/p>\n<ul>\n<li style=\"text-align: justify;\">The\u00a0<strong>Preventive maintenance\u00a0<\/strong>of the main and auxiliary equipment of the networks, pumping stations, water supply\nsystems, wells, operating instruments (valves, piping, air extractors, etc.), as well as any spare equipment.<\/li>\n<li style=\"text-align: justify;\">The\u00a0<strong>Repair maintenance\u00a0<\/strong>restoration of any damages that will occur during the operation of the projects (networks,\npumping stations etc) through various interventions, reconstructions, repairs that will be carried out where necessary\n\nin the area of \u200b\u200bthe Organization\u2019s networks, with or without the collaboration of the engineering means Organization\u2019s staff and only upon a mandate from the service\n\nin which the contractor\u2019s response time will be determined for their execution.<\/li>\n<li style=\"text-align: justify;\">Checking the hydraulic networks and tanks in order to verify their functionality, the\u00a0<strong>measurement<\/strong>\u00a0of\u00a0<strong>pipeline supplies<\/strong>\u00a0and\u00a0<strong>pressures<\/strong> the control of the proper\nfunctioning of network instruments: air-jets, valves, anti-flood valves, float valves etc.<\/li>\n<li style=\"text-align: justify;\">Investigating the tightness of the tanks and performing repair work when a problem is found.<\/li>\n<li style=\"text-align: justify;\">Investigating functionality and cleaning of manholes.<\/li>\n<li style=\"text-align: justify;\">The <strong style=\"font-size: 1rem; letter-spacing: 0.1px;\">Constant leakage control<\/strong><span style=\"font-size: 1rem; letter-spacing: 0.1px;\">\u00a0and direct\u00a0<\/span><strong style=\"font-size: 1rem; letter-spacing: 0.1px;\">damage restoration\u00a0<\/strong><span style=\"font-size: 1rem; letter-spacing: 0.1px;\">action in pipelines, according to the Organization\u2019s specifications and pipeline <\/span><span style=\"font-size: 1rem; letter-spacing: 0.1px;\">construction guidelines.<\/span><\/li>\n<li style=\"text-align: justify;\">The collaboration with the competent services of the Organization for the application of modern operating methods, such as\u00a0<strong style=\"font-size: 1rem; letter-spacing: 0.1px;\">automation\u00a0<\/strong><span style=\"font-size: 1rem; letter-spacing: 0.1px;\">and\u00a0<\/span><strong style=\"font-size: 1rem; letter-spacing: 0.1px;\">remote control<\/strong><span style=\"font-size: 1rem; letter-spacing: 0.1px;\"> of networks, <\/span><span style=\"font-size: 1rem; letter-spacing: 0.1px;\">tanks, pumping stations, etc. as well as with the Cathodic Protection Services.<\/span><\/li>\n<li style=\"text-align: justify;\">The\u00a0<strong>Continuous control<\/strong> of plumbing networks for the existence of operational irregularities by consumers or illegal connections and immediate restoration of the normal situation, as well as taking the necessary measures.<\/li>\n<li style=\"text-align: justify;\">The\u00a0<strong>Monitoring<\/strong>\u00a0the good operation and recording of measurements of both central and consumer water meters.<\/li>\n<li style=\"text-align: justify;\">The increase of\u00a0<strong>water connections<\/strong>\u00a0in water supply and the connection of hydrometers to hydrostations.<\/li>\n<li style=\"text-align: justify;\">The\u00a0<strong>Co-operation\u00a0<\/strong>with the Organization\u2019s Hydraulic Works Coordinating Office and the Fault Center.<\/li>\n<li style=\"text-align: justify;\">The\u00a0<strong>Keeping<\/strong>\u00a0a daily business log.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<\/div>\n\t\t<div data-elementor-type=\"section\" data-elementor-id=\"39573\" class=\"elementor elementor-39573\" data-elementor-post-type=\"elementor_library\">\r\n\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3ed96d6 elementor-section-full_width elementor-section-height-default elementor-section-height-default sc_fly_static\" data-id=\"3ed96d6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-extended\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5fb2d94 sc_inner_width_none sc_content_align_inherit sc_layouts_column_icons_position_left sc_fly_static\" data-id=\"5fb2d94\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element 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class=\"swiper-pagination\"><\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u03a0\u0395\u03a1\u0399\u0393\u03a1\u0391\u03a6\u0397 \u03a4\u039f\u03a5 \u0395\u03a1\u0393\u039f\u03a5 \u03a4\u03bf \u03b1\u03bd\u03c4\u03b9\u03ba\u03b5\u03af\u03bc\u03b5\u03bd\u03bf \u03c4\u03b7\u03c2 \u03c0\u03b1\u03c1\u03bf\u03c7\u03ae\u03c2 \u03c5\u03c0\u03b7\u03c1\u03b5\u03c3\u03b9\u03ce\u03bd \u03c4\u03b7\u03c2 CONSTRAT \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03b9 \u03c4\u03b7\u03bd \u03c5\u03c0\u03bf\u03c3\u03c4\u03ae\u03c1\u03b9\u03be\u03b7 \u03c4\u03b7\u03c2 \u0394\u03b9\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7\u03c2 \u0394\u03b9\u03b1\u03c7\u03b5\u03af\u03c1\u03b9\u03c3\u03b7\u03c2 \u03a3\u03c5\u03b3\u03ba\u03bf\u03b9\u03bd\u03c9\u03bd\u03b9\u03b1\u03ba\u03ce\u03bd \u03ba\u03b1\u03b9 \u03a5\u03b4\u03c1\u03b1\u03c5\u03bb\u03b9\u03ba\u03ce\u03bd \u0388\u03c1\u03b3\u03c9\u03bd \u03c4\u03bf\u03c5\u00a0\u039f.\u0391.\u039a. \u0391.\u0395.\u00a0\u03b3\u03b9\u03b1 \u03c4\u03b7\u00a0\u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u00a0\u03ba\u03b1\u03b9\u00a0\u03c3\u03c5\u03bd\u03c4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03c4\u03c9\u03bd \u03c5\u03b4\u03c1\u03bf\u03b1\u03c1\u03b4\u03b5\u03c5\u03c4\u03b9\u03ba\u03ce\u03bd \u03b4\u03b9\u03ba\u03c4\u03cd\u03c9\u03bd, \u03c4\u03bf\u03c5 \u03c5\u03b4\u03c1\u03b1\u03c5\u03bb\u03b9\u03ba\u03bf\u03cd \u03b5\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03bf\u03cd \u03c4\u03c9\u03bd&hellip;<\/p>","protected":false},"author":3,"featured_media":39691,"comment_status":"closed","ping_status":"closed","template":"","cpt_portfolio_group":[272],"class_list":["post-37248","cpt_portfolio","type-cpt_portfolio","status-publish","has-post-thumbnail","hentry","cpt_portfolio_group-paroxi-ipiresiwn"],"acf":[],"yoast_head":"<!-- This site is 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