Section 1: Equipment manufacturing in compliance with the following regulations and standards

1、TSG 21-2016Technical Supervision Code for Safety Management of Fixed Pressure Vessels

2、GB150.1～150.4-2011Pressure Vessel

3、NB/T47014-2011"Pressure Vessel Welding Procedure Qualification."

4、NB/T47015-2011"Pressure Vessel Welding Procedure Specification"

5、GB/T25198-2010"Pressure Vessel Head"

6、NB/T47013-2015"Non-Destructive Testing for Pressure Equipment"

7、NB/T47016-2011"Mechanical Property Test of Welded Specimens for Pressure Equipment Products"

8、JB/T4711-2003Coating and Packaging for Pressure Vessels Transportation              

9、GB/T18442-2011"Fixed Vacuum Insulated Deep-Chilled Pressure Vessel"

II. Description of Equipment Features, Performance, and Structural Parameters

1Equipment Features

Liquefied natural gas tanks are horizontal, double-layered cylindrical vacuum powder insulated structures, with the inner cylinder containingLNGMaterial:S30408The head is made of a standard elliptical head, with the outer cylinder facing the atmosphere, and the material isQ345RLow-alloy steel, an eight-point support structure is used between the inner and outer cylinders. Insulation thickness250mmThe inner and outer tube sandwich is filled with thermal insulation material pearl sand insulation material and vacuum extracted. The pressure of the inner and outer layers is absolute pressure ≤5PaThe factory vacuum level exceeds national standards, ensuring the evaporation rate specifications; the storage tank is equipped with a complete set of operational valves and instruments. These valves and instruments allow for on-site observation of liquid inflow and outflow, as well as pressure and level.

2Performance and structural parameters

The Liquefied Natural Gas (LNG) storage tank consists of the tank body, instruments, pipelines, valves, etc. The LNG storage tank employs two types of liquid intake methods—upper and lower—and can be self-selected according to the actual conditions.

The inner tank of the Liquefied Natural Gas (LNG) storage tank is equipped with a safety system device featuring dual safety valves. Under normal operation, one set is in operation while the other is on standby. If the operating safety valve trips, the manual pressure relief valve is immediately opened to depressurize below the tank's maximum working pressure. Simultaneously, the safety device is swiftly switched to the standby system via the manual handle, effectively ensuring the tank's safety. This safety system device consists of safety valves, explosion-proof devices, vent valves, and three-way ball valves, not only reducing pipeline welding but also featuring excellent fire and static electricity prevention structures. Additionally, the safety relief openings on the outer shell are fully guaranteed to ensure the entire equipment's safety and reliability. The low-temperature pipelines are集中引出 for ease of operation and control, and the outlet is designed with a Duralumin structure to meet low-temperature requirements and reduce stress on the pipeline due to thermal expansion and contraction, ensuring the tank's safety. The vacuum pump valve employs a triple-sealed design.OThe shape ring seal effectively ensures the reliability of the sandwich seal, and is made entirely of stainless steel, with a compact design. The top design of the liquefied natural gas (LNG) storage tank features a suspension structure for easy transportation, lifting, and installation. The unique manhole design ensures the cleanliness inside the container when it is sealed. Vacuum isolation valves and combined vacuum gauges are used on the LNG storage tank for easy measurement of the vacuum degree in the sandwich and maintenance, extending the tank's service life and improving its quality. The LNG storage tank is equipped with a level gauge and a pressure gauge for local display of liquid level and pressure. The sandwich insulating material is high-quality domestic pearl sand, with the following performance parameters of the pearl sand:

Section 3: Inspection, Testing, and Acceptance

1Inspect the inner cylinder material; use only upon passing inspection.

2All welds shall be inspectedGB150.1～150.4-2011Inspection of standards and drawings is required; upon passing inspection.A、BWeld-like seam100Radiation % detectionA、B、C、DWeld-like seam100% Penetration testing and issue a test report

3Assemble the cylinder after the assembly is complete.GB150.1～150.4-2011Geometric dimensions, pipe end orientations, and shape deviations are inspected according to standards and drawings.

4After inspection and approval, conduct a pneumatic test and issue a pressure test report. Upon passing the pneumatic test, evacuate the vacuum. Once the vacuum level meets the requirements, perform a helium leak test.

5After interlayer leak testing passes, fill with pearl sand and then vacuum, achieving the required vacuum degree.GB/T18442-2011Standard requirements for the sealed vacuum degree.

Section 4: Technical Documents

1After the contract is signed, the seller shall provide the following technical data to the buyer:

Certificate of Product Quality for the equipment1Set (supplied with equipment)

Including: Material Certification of Main Pressure Components, Bill of Materials, Structural Dimension Inspection Report, Inspection Plan, Product Compliance Certificate, Pressure Vessel Product Data Sheet, Welding Records, Non-Destructive Testing Reports, Pressure Test Reports, Supervision and Inspection Certificate for Special Equipment Manufacturing (Local Inspection Institute), Product Label Copy

As-Built Drawings Each1Piece (provided with the equipment)

Section 3: Strength Calculation Sheets1Each (supplied with the equipment)

⑷ User Manual1Each (supplied with the equipment)   

Equipment process flow diagrams and basic reference diagrams1Piece (Contract)7Available today.

⑹ Certificate of conformity for accessories, instrument calibration report 1Pack (supplied with the equipment)

5. Quality Assurance, After-Sales Service, Technical Support

1The equipment performance meets the user's requirements and ensures normal operation within the process range.

2The warranty period for the valves and gauges on the storage tanks is one year, during which free service and repair are provided, as well as free replacement of damaged parts. The equipment warranty period starts upon delivery of the equipment.12Months.

3During the warranty period, if there are issues with our manufactured equipment on-site: if the issue is due to manufacturing defects, our company will respond to the customer's formal notification within regular working hours.2Hourly response, available24Within hours, a professional technician will arrive on-site to address the issue. Service personnel will not leave the scene until the fault is resolved. Replacement parts are free within the warranty period; beyond that, only cost-based fees are charged.

4During equipment operation, in case of any malfunction, the seller shall first address the issue, followed by clarifying responsibilities, with the principle of ensuring normal equipment operation.

1. Lifetime technical consultation provided by the supplier, always ready to address customers' inquiries.

Heze Boiler Factory Co., Ltd. — Shandong Heke Group

Liquefied Natural Gas (LNG) storage tanks, also known as LNG tanks, are specialized low-temperature liquid pressure vessels designed for filling with liquefied natural gas.

Natural gas transforms from a gaseous to a liquid state, known as liquefied natural gas (LNG), when cooled to -162°C under atmospheric pressure.

Liquefied Natural Gas (LNG) is colorless, odorless, non-toxic, and non-corrosive, primarily composed of methane, and also includes a certain amount of ethane, propane, and heavier hydrocarbons.

Hydrocarbons of high quality. Also contains trace amounts of nitrogen, oxygen, carbon dioxide, and sulfides.

Liquefied Natural Gas (LNG) storage tanks are classified as type III pressure vessels, manufactured and inspected in accordance with the national GB150-98 standard for steel pressure vessels and GB18442-2001 standard for low-temperature containers, with on-site supervision and inspection by the National Technical Supervision authority.

The Liquefied Natural Gas (LNG) storage tank is a double-layer vacuum-insulated low-temperature storage tank, composed of an outer cylinder, inner body, insulation layer, thermal insulation material, root valve, liquid level gauge, vacuum pump valve, and in/out liquid pipes.

The outer cylinder is made of 235B or 345R steel, while the inner cylinder is made of austenitic stainless steel.。

Product Specifications; 5-100 Cubic Units