Quality identification of liquid chlorine storage tanks

liquid chlorine storage tank is a container specially used to store liquid chlorine. It plays a certain protective role in the storage and transportation of liquid chlorine.
liquid chlorine storage tank is used for liquid chlorine storage and is widely used in power plants, coal chemical, metallurgy, machinery, chemical industry, fertilizer, refrigeration, building materials, water treatment and other industries.
In the case of liquid chlorine storage tank quality appraisal, Zhongke Testing can provide liquid chlorine storage tank quality appraisal services.

1. Material testing: Liquid chlorine buffer tanks are usually made of special materials, such as stainless steel or carbon steel. Material quality and compliance are critical to the storage and transportation of liquid chlorine. Material testing and analysis ensures the material has sufficient strength and corrosion resistance to withstand the pressure and chemical properties of liquid chlorine.
2. Capacity evaluation: The capacity of the liquid chlorine buffer tank is an important indicator, which determines the amount of liquid chlorine that can be stored in the tank. Capacity assessment typically involves geometric measurements of the vessel and volume calculations. In addition, the expansion coefficient and pressure changes of liquid chlorine also need to be considered to ensure that the container can operate safely under different working conditions.
3. Sealing test: Liquid chlorine is a volatile and pungent smelling substance, so the liquid chlorine buffer tank must have good sealing performance. Commonly used tightness testing methods include pressure testing and leak detection. By applying a certain pressure inside the tank and monitoring changes in pressure, you can determine whether there is a leak in the tank.
4. Safety valve performance evaluation: Liquid chlorine buffer tanks are usually equipped with safety valves to release the pressure when the pressure in the tank exceeds the safety limit to ensure the safety of the system. Performance evaluation of a safety valve includes calibration and testing to ensure it can release pressure promptly and accurately when needed.
5. Corrosion Assessment: The characteristics of liquid chlorine make liquid chlorine surge tanks susceptible to corrosion. Corrosion assessment can be accomplished through regular inspections of tank surfaces for corrosion levels and laboratory analysis using corrosion detection techniques. This helps to detect corrosion problems early and take appropriate remediation measures.

GB/T 12337-2014 Steel spherical storage tank
GB 5908-2005 Petroleum storage tank flame arrester
GB/T 37327-2019 Atmospheric storage tank integrity management
GB/T 17261-2011 Types and basic parameters of steel spherical storage tanks
GB/T 25197-2010 Static normal pressure welded thermoplastic storage tanks (tanks)
GB/T 30578-2014 Risk-based inspection and evaluation of normal pressure storage tanks
GB/T 41394-2022 Functional safety requirements for overflow prevention systems for storage tanks of explosive hazardous chemicals

The liquid chlorine storage tank purchased by a heavy industry company did not meet the technical requirements agreed upon in the agreement, and a dispute arose with the equipment manufacturer.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" in the liquid chlorine storage tanks involved.
identification analysis results:
identification analysis expert group discussed the relevant information and on-site investigation of the liquid chlorine storage tank involved and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
After the liquid chlorine storage tank numbered V48XX was repaired, there is still a fillet weld gap larger than 13mm at the leakage location of the tank drain pipe and the tank body fillet weld, which is a safety hazard Hidden danger, the ultrasonic flaw detection results show that the internal quality of the welds is unqualified, so the subject matter now does not meet the requirements of qualified pressure vessel standards;
's two liquid chlorine storage tanks numbered V48XX and V48XX have quality problems such as incomplete penetration of about half the thickness of N6 and L2a fillet welds, which do not meet the requirements of TSGR2004-2009 "Safety Technical Supervision Regulations for Fixed Pressure Vessels" and do not meet the requirements of qualified pressure vessels.