Construction of any facility starts from the design development. Designing of the power supply includes the following stages:
- Formation of the project concept;
- Preparation and collection of the necessary information and documentation (obtaining technical specifications, design data, etc.);
- Design development and concordance of the main design solutions with the customer;
- Approval of the design, obtaining all the necessary permits.
Preliminary list of documents prior to the design development:
- a copy of the document certifying the right for ownership/use of the facility or land;
- urban conditions and restrictions;
- technical specifications;
- design assignment;
- land lot surveying materials and engineering networks;
- results of geotechnical studies within the design area.
Urban planning documentation consists of:
- General layout of the settlements;
- Detailed site layout.
City planning conditions and restrictions are valid till the end of construction.
Technical Specifications means a set of the engineering requirements for construction of the facilities that should meet its design parameters, namely: water, heat, electricity and gas supply, radio installation, outdoor lighting, sewage, telephone, telecommunications, dispatching, fire and technological safety.
Technical Specifications should contain reliable information and reasonable requirements for facility construction, and should meet customer’s intent on how to perform construction at the site.
Technical assignment specifies requirements of the customer for planning, architectural, engineering and technological solutions of the construction, its key parameters, construction cost and should be drafted considering the technical specifications, as well as urban conditions and restrictions.
Topographic surveying creates a basis for the further planning of the facilities construction and ensures both actual and foregoing durability and reliability of the constructed facility.
Geological engineering researches should be performed prior to the construction in order to determine the soil deformation features.
Based on the state building codes and standards as well as class of the facility consequences (liability) shall be determined its complexity category. All construction projects are divided into I, II, III, IV and V complexity category.
Complexity category of the facility is usually indicated in the design assignment and used to determine the stages of design. It is as well defined while developing the design documentation.
In case of the discrepancies occurring between pre-calculated and specified in the technical assignment complexity of the facility, the assignment should be properly revised.
Design stages:
- DD – detailed design should be developed for the technically simple facilities and facilities where the design (solutions) are being re-implemented;
- TEC – technical and economic calculation should be applied to technically simple production facilities and linear facilities belonging to the engineering and transport infrastructure;
- CD - conceptual design should be developed on the basis of the assignment for determination of the fundamental requirements for urban, architectural, artistic, environmental and functional solutions of the facility, with aim to confirm the possibility of construction of the non-production facility;
- FS - feasibility study should be developed on the basis of the customer’s assignment for production facilities and linear facilities of the engineering and transport infrastructure, which require a detailed study of the relevant solutions and determine possible options and feasibility of the facility construction;
- D – design should be developed for determination of the urban, architectural, artistic, environmental, technical, technological, and engineering solutions of the facility, including the estimated cost of construction;
- E - engineering documentation should be developed on the basis of the previously approved design stage (of the project).
Evaluation results of the impact on environment should be added to the design documentation for construction of the facilities of high environmental hazard, as well as for the facilities which are subject to impact assessment on the environment in the trans-boundary context.
Only presence of the successful experience in implementation of the projects for facility connection to the electric power grids could serve as the key for creation of the optimum concept for development of the design documentation.