Tenders Are Invited For General Construction Work For Pipelines - Site Construction: Reconstruction Of The Street Water Supply Network Of The Village Of Karnalovo, Petrich Municipality, Blagoevgrad District

General Construction Work For Pipelines - Site Construction: Reconstruction Of The Street Water Supply Network Of The Village Of Karnalovo, Petrich Municipality, Blagoevgrad District. The Village Of Karnalovo Is Supplied With Water From Two Pressure Reservoirs Located North Above The Village, Respectively With A Volume Of 500 M3 And 75 M3, And The Water To The Street Water Supply Network Of The Village Is Supplied From Both Reservoirs. There Are Two Water Supply Zones In A Peculiar Way, With Water Supplied To The Low Zone From A 500 M3 Tank, And To The High One From 75 M3. The Supply Of A 500 M3 Pressure Tank Is Carried Out By Means Of A Pumping Station On The 2Nd Rise - C. Mikhnevo And Thruster F160 Re. From The Pressure Tank, By Means Of A Pump Group Located In The Dry Chamber, Part Of The Water Is Pumped To A 75M3 Pressure Tank Located At A Higher Elevation Northeast Of It. Eternite And Steel Pipes Make Up A Large Percentage Of The Total Length Of The Network In The Village, With An Average Laying Age Of Approximately 50 Years. The Main Problem In Operation Is The Frequent Accidents Due To The Loss Of Physical Strength And The Constant Leaks From The Connections Due To The Loss Of Elasticity Of The Gaskets. The Main Problem In The Operation Of These Water Pipes Is The Accidents And Constant Hidden Leaks From Breaches Due To Corrosion. The Problems Of The Distribution Water Network Thus Defined Imply A Large And Growing Number Of Accidents And A Corresponding Increase In Physical Losses Of Water. There Is A Sewer Network Built Within The Street Network In The Settlement. The Design Decision Provides For The Zoning Of The Water Supply Network Of The Village. Karnalovo, Thereby Ensuring The Legally Permissible Maximum Pressure In The Designated Areas. There Are Three Water Supply Zones - High, Medium And Low, And The Installation Of 3 Pressure Regulators Is Foreseen. A High Area Is Designated As Self-Fed By A Pressure Tank With A Volume Of 75M3 And Covering A Small Part Of The High Streets In The North-Eastern Part Of The Village. The Intended Pressure Regulator Is Installed At The Connection Between The Supply Water Pipe And The Distribution Street Network With Outlet Pressure P=2 Atm. The Middle And Low Zones Are Fed By The Lower Pressure Reservoir With A Volume Of 500 M3, With The Middle Zone Covering The Northwestern Part Of The Village, And The Rest Of The Settlement Being Designated As A Low Zone. The Intended Pressure Regulators Have An Output Pressure Of P=2 Atm., Being Installed In The Nodes According To The Dimensional Plan And Longitudinal Profiles Attached In The Graphic Part To The Project. To Separate The Zones, The Necessary Number Of Shut-Off Valves Are Also Provided, Also Indicated In The Dimensional Plan. The Routes Of The Wires And Facilities, The Subject Of The Development, Are Presented In The Graphic Part Of The Project. The Construction Is Fourth Group-Second Category Within The Meaning Of Art. 5, Para. 6, Item 4.2.1. From The Regulations For The Procedure For Entering And Maintaining The Cprs