A new pressure retention system is to be erected at the site of the Schwerin Süd combined heat and power plant to replace the existing system for maintaining pressure in the heating water system.
The tasks of pressure maintenance are to protect against evaporation in the system, taking into account local temperature increases and geodetic highs, as well as to avoid impermissibly high or low pressure due to thermal expansion or heat contractions and leaks in the system.
The heating water required to maintain the pressure is degassed and stored in a mains water tank including a degasser by means of auxiliary steam from the auxiliary steam generator (HIDE). Furthermore, the water is replenished to the HIDE from the mains water tank.
(a) The main components of the invitation to tender shall be as follows:
• Mains water tank with
- Dampfverteilerspinne
- Built-in thermal degasser
- All necessary attachments and fixtures
- Erdungsanschluss,
• Load plans for steel construction as well as
• All necessary assembly and equipment (crane, scaffolding, etc.).
b) In particular, the following services must be provided:
• Calculation, planning, design of plant components,
• 2D drawings (.pdf and .dwg),
• 3D model for insertion into the overall 3D model of the CHP,
• Support in editing the interfaces,
•Procurement
• Production including all necessary tests (factory inspection),
• Delivery including freight and packaging free of charge,
• temporary plant marking,
•Commissioning
• trial operation,
• Spare parts stock during IBS and trial operation,
• Preparation of spare and wear parts list,
• Proof of assured properties,
•Warranty
• Technical documentation incl. as-built documents,
• Complete documentation with the necessary planning documents for operation, maintenance and servicing, operating instructions,
• Disposal of packaging,
•Discharge
• Assembly documents (schedules, acceptance plans, descriptions, drawings, reports, etc.),
• Complete assembly, including necessary armor,
• temporary signage,
• All necessary - and yet to be determined - transition pieces on nozzles larger than DN50 for the problem-free production of the weld seam between the apparatus and the on-site connection pipeline on site,
• All necessary temporary arrangements for the strength tests as well as
• Spare parts recommended on the AN side in sufficient numbers such as
- 2 sets of gaskets per flange connection / per apparatus.