Liquefied gas carrier deck liquid cargo system support base plate installation precision management and control process

Abstract

The invention provides a liquefied gas carrier deck liquid cargo system support base plate installation precision management and control process. The process includes the steps that the field installation precision is guaranteed by controlling the precision of the deck support base plate installation line; in an overall composition carrying stage, a total station is used for measuring a block support base plate and a unit support, support measurement data are matched with block support base plate data in a simulation mode, and the support base plate with large simulation deviation is correctedin advance, so that the alignment precision of the block support base plate and the support is guaranteed; and in a block carrying stage, the relative position relation between a block center and a block head-tail direction is mainly controlled, so that the liquefied gas carrier deck liquid cargo system support base plate installation precision can be guaranteed. According to the liquefied gas carrier deck liquid cargo system support base plate installation precision management and control process, through the control and the advanced measurement and correction of each stage from installationto being conveyed to a carrier of the deck support base plate in the process, the precision of a support web plate after being conveyed to the carrier is guaranteed, and the problem of support base plate trimming caused by dislocation of the support web plate and the base plate when the deck liquid cargo system unit support is hoisted and positioned is avoided.

Description

technical field [0001] The invention belongs to the field of precision management and control of a deck liquid cargo system of a liquefied gas ship, and in particular relates to a process for controlling the precision of installation of a backing plate of a deck liquid cargo system of a liquefied gas ship. Background technique [0002] The deck liquid cargo system is the core part of the liquefied gas carrier, and the support plate of the liquid cargo system is the transitional part connecting the liquid cargo system with the hull. The installation accuracy of the support plate directly affects the stress stability of the successor liquid cargo system. The alignment accuracy between the support plate of the cargo system bracket and the bracket of the liquid cargo system is also the key work of the installation of the liquid cargo system. [0003] In the previous liquefied gas ship construction process, the deck bracket backing plate was usually installed and welded according...

AI Technical Summary

Problems solved by technology

In the traditional practice, there are many misalignments between the liquid cargo system bracket and the backing plate, resulting in a large number of backing plate repairs and rework

[0004] However, after the liquid cargo system bracket was hoisted, it was found that it was misaligned with the backing plate. When trimming the backing plate of the deck bracket, not only was the deck small and difficult to control, the operation was difficult and the efficiency was low. At the same time, the paint on the back of the deck was also damaged by high temperature during the trimming process of the backing plate. , It is more difficult to polish and repair the paint in the narrow space on the back of the deck. During the process of trimming the backing plate and polishing the paint on the back, the fire risk of the flammable insulation material of the liquid tank is increased, which brings hidden dangers to safe construction

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