Construction process
HOW IS THE GAS PIPELINE CONSTRUCTED?
- GEODETIC STAKEOUT OF THE ROUTE AND ARCHAEOLOGICAL AND EXPLOSIVE ORDNANCE SURVEY:
- specification of the exact route of the pipeline axis, designation of the construction strip by means of poles and potential places of collisions with roads, railway lines, etc;
- performance of rescue tests for the surveyed archaeological sites within the construction strip;
- explosive ordnance survey of the gas pipeline route in terms of unexploded ordnances.
- REAAOVAL OF PLANTS AND TOPSOIL:
- removal of trees, shrubs and any other unidentified objects from the construction strip, which hinder the performance of works;
- collection and securing of topsoil;
- leveling the land to facilitate the operation of construction machines, local construction of temporary roads.
- ARRANGEAAENT OF PIPES ALONG THE ROUTE:
- transport of pipes previously stored on storage yards and unloading along the gas pipeline construction strip.
- WELDING OF PIPES AND EXCAVATION WORKS:
- welding of previously prepared pipes by joining them into sections;
- inspection and insulation of welds to ensure pipę connections of the highest quality;
- execution of an excavation to enable the laying of the pipeline at the designed depth, allowing it to be backfilled with at least 1.2 m of soil counting from the top of the pipeline, and with an appropriately higher layer in areas provided with drainage
- LAYING OF THE GAS PIPELINE IN THE EXCAVATION AND PERFORMANCE OF TESTS:
- laying of the pipeline in the excavation using the so-called side boom cranes and joining the individual pipeline sections together;
- as-built survey of the pipeline;
- partial backfilling of the laid gas pipeline, reconstruction of drainage systems and covering with native soil previously produced from the excavation.
- RESTORATION OF THE ORIGINAL CONDITION OF THE SITE:
- restoration of the initial topography;
- restoration of the original soil layer - laying of topsoil;
- reclamation of the area occupied for the implementation of the project.
- DESIGNATION OF THE GAS PIPELINE ROUTE:
- designation with posts, which will be the only trace of the pipeline routing between the subsequent above-ground structures (stop and pressure relief assemblies and gas transmission stations).
- PERFORMANCE OF TECHNICAL ACCEPTANCE AND COMMISSIONING:
- obtaining of the administrative decision on the use permit and official handover of the gas pipeline for operation.