Regular inspection of low-temperature storage tanks. Supply of horizontal 60 cubic meter LNG storage tanks to Guangdong

Description :

　　Most uselow-temperature storage tankUsers often neglect the maintenance and upkeep of the equipment itself, as well as the regular inspection of the equipment, for the sake of use. This can cause many problems for the equipment, such as affecting its lifespan. Below is a brief explanation of the regular inspection methods for low-temperature storage tanks during use.

　　Internal inspection:

　　Low temperature storage tanks are composed of inner tanks, interlayers, and outer shells. Inner tank inspection cannot be carried out, and is generally determined by the problems exhibited by the equipment itself to determine whether there are defects such as weld cracks, decarburization, stress corrosion, intergranular corrosion, and fatigue cracks in the inner tank. The usual inspection method is helium leak detection. For example, when the vacuum degree of the equipment interlayer (insulation layer) is high, the insulation effect is not good, or the pressure of the inner tank is high, it is estimated whether there will be leakage in the inner tank.

　　external inspection

　　Check whether the anti-corrosion layer, insulation layer, and equipment nameplate of the low-temperature storage tank are intact, and whether the safety accessories and control devices are complete, sensitive, and reliable; Whether there are cracks, deformations, local overheating and other phenomena on the outer surface; Check for leaks in the weld seams and pressure components, integrity of fastening bolts, and any abnormal conditions such as sinking or tilting of the foundation.

　　comprehensive inspection

　　When the low-temperature storage tank has been in use for a long time, the local inspection department of the user will conduct a comprehensive inspection of the equipment. Perform non-destructive inspection on the main welds or shells, with a spot check length of 20% of the total weld length; After passing the internal and external inspections, a water pressure test shall be conducted at 1.25 times the design pressure of the storage tank, and an air tightness test shall be conducted at the design pressure of the storage tank. During the above inspection process, if there is no leakage in the storage tank and its welds, and if there is no visible abnormal deformation in the low-temperature storage tank, it is considered qualified; After the inspection of the low-temperature storage tank is completed, a report should be made on the tank inspection, indicating the problems and reasons why it can continue to be used or can continue to be used but needs to be repaired or cannot be used. The inspection report should be kept on file for future maintenance and reference.

　　Low temperature storage tanks are widely used in many industries. In addition to the high-quality, high compressive strength, and excellent corrosion resistance products provided by manufacturers, which can meet customer needs, it is necessary to strengthen regular inspections and maintenance management of low-temperature storage tanks during long-term use. Otherwise, there is a high possibility of leakage, which could lead to significant casualties. Therefore, to avoid such situations, it is necessary to conduct effective regular inspections, maintenance, and upkeep of the equipment on time.

AfterSalesService :

• Regular inspection of low-temperature storage tanks