Method for Repairing Fire Fighting Piping System on Vertical Storage Tank

Abstract

The invention discloses a method for repairing a fire-fighting pipeline system on a vertical storage tank. The method comprises the following steps that a fire-fighting water supply pipeline on the steel vertical storage tank is disassembled, wherein the fire-fighting water supply pipeline comprises a fire-fighting water supply vertical pipe and a fire-fighting water supply ring pipe, a pipeline support used for allowing the fire-fighting water supply pipeline to be installed and fixed on the steel vertical storage tank is inspected, the inner end of the pipeline support is fixed on the outerside wall of the steel vertical storage tank in a welding mode, and a liquid-state flammable and explosive substance is stored in the steel vertical storage tank. According to the method for repairingthe fire-fighting pipeline system on the vertical storage tank, hot welding work does not need to be performed on the steel vertical storage tank, so that the fire hazard and the explosion risk possibly caused by the hot work in an explosion danger operation place are avoided, the maintenance step is greatly simplified, moreover, the safety risk of the maintenance operation is reduced, and meanwhile, the high cost required by a tank cleaning program necessarily performed before the hot work of the storage tank is saved for an enterprise.

Description

technical field [0001] The invention relates to a method for repairing a fire-fighting piping system on a vertical storage tank. Background technique [0002] Steel vertical storage tanks have a large volume and a small footprint, and are widely used in the petrochemical industry to store various flammable and explosive chemical raw materials such as crude oil, refined oil, methanol, benzene, or their semi-finished and finished products. Because most of the chemical products stored in steel vertical storage tanks are flammable and explosive, in order to ensure the safety of steel vertical storage tanks, the current national standards require that such steel vertical storage tanks should be equipped with fixed foam Fire extinguishing pipes and fire cooling water pipes, these two fire fighting pipes are all fixed on the welded brackets on the steel vertical storage tank. Steel vertical storage tanks are generally in service for decades. Due to rain, sun exposure, salt spray e...

AI Technical Summary

Problems solved by technology

However, if the existing method is used to replace the foam fire extinguishing pipe or fire cooling water pipe on the steel vertical storage tank and the bracket used to fix the fire protection pipeline, it is necessary to empty the flammable and explosive medium in the steel vertical storage tank, and The hot welding operation can only be carried out after cleaning and replacement. Because the cleaning of the storage tank must be carried out before the hot work, high costs will be incurred, and the operation cycle is very long, which seriously affects the normal production of the enterprise

Images