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Call for tenders' details

Please note that in the eSubmission homepage (Tendering data) the valid tendering dates are those in the second blue banner: tender deadline 31/07/2020 16:00; Opening of tenders: 03/08/2020 11:00. The warning refers to the old date 11/06/2020. Tenders submitted within 31/07/2020 16:00 will be considered in time. IMPORTANT Published in Questions&Answers tab clarifications on issues with uploading p7m offer files.
Title:
Retrofit of the Trigeneration System in JRC Ispra Site by Construction of a New ...
Contracting authority:
European Commission, Joint Research Centre - Ispra (JRC-IPR)
TED publication date:
10/03/2020
Time limit for receipt of tenders:
31/07/2020
Status:
Closed
Status
30/04/2020
05/05/2020
italiano (it) English (en)
Question details
request for clarification — third part
On page 24 of document 3-P.013273.2004 RE98005_02 Technical Specification - Scope Description it indicates: "The new cooling water systems (ie including the pumps, fans, etc.) shall be designed in order to dissipate the heat rejected by the new absorption chillers and the existing vapor compressor chillers (ie the existing cooling towers shall be then put out of services and dismantled). The cooling towers shall be realized in separate sections associated with the different units (i.e. the new absorption chillers and the existing vapor compressor chillers). " In P&I 6-P.013273 PW98003_01 - PID Abs Chiller, on the other hand, a tower is provided for each absorber, each equipped with two circulation pumps, and no users such as centrifugal compressors are indicated. Which of the two forecasts is to be taken into consideration; if the need to dissipate the compression refrigerators is confirmed, the flow and in and out temperatures required for the two existing machines and the configuration to be provided for the purpose of supply are required
05/05/2020
Regarding the configuration to be considered in the scope of the supply, it is a system with cooling towers for the new absorption chillers + existing chillers. It has been preliminarily supposed to divide in three towers: two to be devoted to the new chillers (those shown in the P&ID and in the PFD) plus one additional to be devoted to the existing compression chillers (not shown in the drawings but requested in the scope of the supply). It has been supposed to have two tower water circulation pumps for each tower (one is a backup to the other). Regarding technical features, we attach main data of existing equipment