Works For Complete Or Part Construction And Civil Engineering Work – Renovation Of Four Bellows Weirs (Dig-18148). The Work Includes The Renovation Of 4 Bellows Weirs Located Around Or Near The Haarlemmermeerpolder. The Work Mainly Consists Of: Locations Oude Wetering, Leimuiden And Lisse: A) Lifting Out The Steel Bottom Box Constructions. B) Inspecting The Steel Bottom Box Constructions. C) Inspecting And Cleaning The Concrete Foundation Structure, Under Water. D) Renovating And Preserving The Steel Bottom Box Constructions. E) Inspecting, Repairing And Improving The Locking Mechanism In The Locking Tube. F) Completely Renewing The Bellows Cloth, Seals And Clamp Constructions. G) The Complete Renewal Of The Electrical Installation, Including Process Automation Of The Bellows Weirs And Shipping Control Installations. H) Renewing Or Renovating (Optional By Hhr) Of The Pumping Installations. I) Carrying Out Repairs To Steel Sheet Piling And Renovating And Installing A Number Of Mooring Posts. Location Aalsmeer: The Same Work As Described Above, Except That There Is No Steel Bottom Box Present Here. Instead Of Lifting It Out, A Completely New Bottom Box Must Be Manufactured Here. Changes Compared To The Previous Request The Competition Procedure With Negotiation Was Partly Chosen Because It Was Decided To Change The Scope Compared To The Previous Request. In Any Case, The Following Matters Have Changed Compared To The Previous Tender: - The Ceiling Amount, As Changed In The Previous Tender Procedure. - The Award Will Be Made On The Basis Of Best Price Quality Ratio (Bpkv). - The Factory Test And Test Environment For Setting Up And Folding One Of The Bellows Weirs Will Be Cancelled. Instead, Hhr Will Go Through The Design Process With The Bellows Cloth Supplier, Including Validation By Means Of Scale Tests, So That The Bellows Cloths Can Be Purchased By The Contractor At A Later Date. - The Design Freedom Of The Pumping Installations Is Limited Because A Final Design Will Be Provided With The Specifications For At Least The Bellows Weir Aalsmeer And At The Other Locations Hhr Is Reconsidering The Replacement Of The Pumping Installation And Investigating Whether Renovation And Adjustment Of The Existing Pumping Installations Can Be Assumed. - Hhr Will Provide Additional Information For The New Bottom Box Of The Aalsmeer Bellows Dam As An Appendix To The Specifications. - The Risk Distribution For Applications For Permits And Obstructions Will Be Changed.
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