FIELD: mining.
SUBSTANCE: group of inventions relates to the rigid pipe installation and operation method and to the installation used for the said method implementation. According to the rigid pipe installation and operation method, lowering one of the said main pipe ends from the floating support or vessel on the surface to the level below the sea level for connection to the submerged underwater equipment, and the main pipe is kept in such immersed state for the predetermined period of time. Said main pipe is passed through the circular cross section cylindrical opening, provided in the stress limiting means, called the sliding stiffener. Said opening, called the first opening, comprises slippery inner coating, said sliding stiffener is fixed to the supporting structure, which is fixed on the said vessel or said floating support and extends beyond the said vessel or floating support above the sea surface. Said main pipe upper part is supported suspended above said sliding stiffener. Main pipe is allowed to slip when in contact with the said slippery coating.
EFFECT: increase in the pipe service life.
15 cl, 3 dwg
