The article considers the peculiarities of statement and possible solutions of the problem of optimization of parameters of installation lifting and holding on weight schemes of gas pipeline in the process of construction and repair. It is noted that approaches to the calculation of technological schemes of pipeline laying and elimination of technological gaps require development and optimization. As of today normative documents on the basis of which technological schemes and projects of work execution are developed are out-of-date or have not been developed yet. In this connection in the documentation regulating the construction and repair works the detailed flow charts are often not contained at all or given in a simplified form. However even availability of such schemes in technological charts and projects of gas pipelaying and elimination of technological gaps doesn't mean that they were based on the optimal calculated solutions. As a result, the pipeline is subjected to increased bending and local loads during the works. These factors require special attention during examination of design and technological documentation.
It is also pointed out that one of the authors of the article was the first in Russia who proposed and realized a mathematical method of minimizing bending moments acting at the pipeline. At the same time, the approach applied for solving the problem can also be successfully adapted for calculation of installation, laying and repair schemes of pipelines of subsea production systems, optimization of parameters of lifting and installation of pipeline sections, including pipeline fittings, installation of structures of complex configuration, etc.

A.M. Mitrokhin¹, e-mail: A.mitrokhin@adm.gazprom.ru;

M.Yu. Mitrokhin², e-mail: mail@eksikom.ru;

I.I. Veliyulin², e-mail: mail@eksikom.ru

¹ Gazprom PJSC (Saint Petersburg, Russia).
² EKSICOM LLC (Moscow, Russia).