Inspection and testing standards for atmospheric pressure storage tank manufacturers

Time2024-07-16

Operation and maintenance standards

Standard operation and maintenance

Atmospheric pressureTank manufacturerThe standards for operation and maintenance mainly include safety production industry standards, petroleum and natural gas industry standards, Sinopec standards, and API standards. AQ 3053-2015 specifies the basic safety requirements for materials, design, prefabrication, construction and acceptance, lightning protection, anti-static, corrosion prevention, usage management, inspection, and safety accessories of vertical cylindrical steel welded storage tanks. SY 6306-2014 specifies the safety requirements for the production operation, maintenance, emergency handling, accident management, and disposal of steel crude oil storage tanks. SY/T 5921-2011 specifies the technical requirements for the operation, maintenance, and repair of vertical cylindrical steel welded oil tanks. SY/T 6620-2014 adopts a translation method equivalent to API 653-2014, mainly elaborating on the technical requirements for the inspection, repair, renovation, and reconstruction of oil tanks. SHS 01012-2004 provides detailed explanations for the maintenance and repair of atmospheric pressure vertical cylindrical steel welded storage tanks. In general, AQ 3053-2015 and SY 6306-2014 focus on the safety requirements of atmospheric pressure storage tanks, with some parts of the standards being mandatory; SY/T 5921-2011, SY/T 6620-2014, API 653-2014, and SHS 01012-2004 focus on the maintenance and repair of atmospheric pressure storage tanks.

Non-destructive testing standards

The guided wave testing, magnetic leakage testing, ultrasonic testing, and acoustic emission testing of atmospheric pressure storage tanks can refer to national standards or mechanical industry standards, while magnetic particle testing and penetrant testing can refer to NB/T 47013-2015 'Non-destructive Testing of Pressure Equipment' standards.

Testing methods

The in-service inspection of atmospheric pressure storage tanks includes three forms: routine inspection, annual inspection, and periodic inspection. Routine inspection is primarily visual, checking the external condition of the tank at close range, including whether there are leaks, deformation of the tank wall, signs of settlement, and the operational status of the tank's insulation, safety accessories, and related components. Annual inspection is conducted to ensure the safety of the tank within the periodic inspection cycle, focusing on external macro inspections. In addition to the contents of routine inspections, it should also include thickness measurement of the wall and roof, foundation settlement detection, and lightning protection and anti-static grounding resistance testing. Periodic inspection is a more comprehensive inspection of the tank conducted at certain intervals, which can use online inspection methods or open tank inspection methods based on actual conditions.

Periodic inspection mainly includes:

(1) Foundation settlement detection;

(2) Inspection of safety accessories;

(3) Inspection of the tank body.

The inspection of the tank body includes not only the inspection of the bottom plate, wall plate, and roof plate but also the inspection of the anti-corrosion coating and insulation inside and outside the tank.

Traditional inspection methods mainly include:

(1) Macro inspection;

(2) Ultrasonic thickness measurement;

(3) Surface defect detection (magnetic particle/penetrant);

(4) Embedded defect detection (ultrasonic/radiographic);

(5) Magnetic leakage detection of the bottom plate;

(6) Vacuum leak testing.

Emerging inspection methods mainly include:

(1) Online acoustic emission testing;

(2) Guided wave testing;

(3) Robotic online inspection technology;

(4) Wall-climbing ultrasonic continuous thickness measurement technology.

Keyword： Inspection and testing standards for atmospheric pressure storage tank manufacturers

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Inspection and testing standards for atmospheric pressure storage tank manufacturers

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