Product Description

Brand: He Guo Group Model: CFW-60/0.8

Material: Stainless Steel, Diameter: 2916mm

Application Range    -162℃    Volume    60000L

Heat Exchange Area - See drawing m²; Environmental Temperature - See drawing °C

Wall Thickness: 8mm; Outer Dimensions: φ2916*14929mm

Origin: Shandong Heze

Jiangxi 60-cubic-meter LNG storage tank, Hunan 100-cubic-meter natural gas storage tank, 30-cubic-meter LNG storage tank price

1.2 Pre-Regulation Work Preparation

1.2.1 Tool Preparation: explosion-proof adjustable wrenches, two pairs of gloves, two sets of protective equipment.

1.2.2 Job Preparation

Wear protective gear, including antistatic suits, static-free shoes, safety helmets, and more.

Ensure that electronic devices such as phones and computers, which may cause static electricity, are placed in a safe area. Check if the surrounding environment is safe and meets the operational requirements.

Before entering, touch your hands on the static discharge equipment to release static electricity.

Check if the explosion-proof wrenches and other pressure regulation tools are fully stocked.

Check that the tank's pressure gauge, level gauge, thermometer, combustible gas detector, and safety valve are operating normally.

Inspect pipeline valves, pressure gauges, and safety valves for normal operating conditions.

(7) Prepare all explosion-proof tools

1.2.3 LNG Storage Tank Gas Supply Process:

All valves on the tanks to be pressurized, except the root valve and the emergency shutdown valve, are in the closed position.

Open the lower tank inlet valve and the booster liquid and vapor phase valves, and check that both valves of the booster gasifier are in the open position.

Open the low-temperature cutoff valve before the gasifier, the at-room-temperature flanged ball valve after the gasifier, and all valves required to be opened in the pressure regulating system.

When the gas supply volume is less than 1000-2000 Nm3/h, one storage tank is sufficient to meet the gas supply requirements.

5. Flow rate:

5.1 When the tank pressure rises above 0.15 MPa higher than the outlet pressure, gradually open the liquid outlet valve to commence the gas supply operation.

5.2 Record the liquid storage tank number and the start of gas supply.

5.3 Pay close attention to the liquid level, pressure changes, and flow and pressure variations at the exit of the storage tank during gas supply.

1.2.4 Operation Procedure for Self-pressurization of LNG Tanks

During manual operation, open the valves: the boost liquid phase valve, the boost gas phase bypass valve, and the vaporizer inlet valve, allowing LNG to flow directly into the self-boosting vaporizer, where it is vaporized and then enters the LNG storage tank. At this point, closely monitor the pressure; close the boost liquid phase valve when the pressure in the LNG storage tank reaches the desired level.

Cautionary Notes:

During the operation of the LNG tank, the liquid level must be maintained at ≤90% for the upper limit and ≥15% for the lower limit. (2) When manually operating the self-pressurizing system, it is strictly prohibited to leave the site unattended.

(3) When the self-pressurizing system is in operation, the pressure-reducing system should be in the off state.

Cautionary Notes:

During the operation of the LNG storage tank, the liquid level must be ≥15%.

(2) No one is allowed to leave the site during manual operation.

1.2.5 Risk Analysis and Countermeasures

During LNG tanker loading and unloading, operators should wear masks, antistatic work clothes, and antifreeze gloves, etc.

When unloading LNG tankers, vehicles must not move to avoid snapping the loading and unloading hoses, which could lead to a large LNG leak.

When LNG is inside the pipeline, both ends' valves cannot be closed simultaneously.

No touching or stepping on low-temperature pipelines and facilities.

Under no circumstances should moisture, oil, mechanical impurities, etc., enter the pipeline to avoid blockages.

Absolutely no hammering, fire roasting, or water spraying on the frozen areas.

To ensure safety in the working environment, operators must properly wear protective gear. Static electricity must be neutralized before entering the station. Open flames are strictly prohibited in the station's working area, and the use of non-explosion-proof tools and electronic devices is strictly forbidden.

Adhere strictly to the operation ticket system, following the steps outlined on the ticket. The on-site operation personnel must consist of at least two people: one to operate and one to supervise, ensuring operation safety.

Conduct safety training prior to operations, ensure proper on-site safety precautions are in place. In case of danger, know how to evacuate and control the situation.

1.2.6 LNG Storage Tank Maintenance and Care Procedure

Operational technicians at liquefied natural gas (LNG) stations must be familiar with the structure and principles of the storage tanks and strictly adhere to operational procedures for LNG-related activities.

LNG operation technicians must be familiar with the performance and principles of storage tank accessories (pressure gauges, level gauges, temperature gauges, vacuum gauge valves).

The outer shell of the liquefied natural gas storage tank is an externally pressurized vacuum vessel, and it is strictly prohibited to perform welding operations under negative pressure. 4. Regularly inspect the outer shell of the storage tank, observing for signs of icing or frost. Upon discovering icing or frost, promptly report to the on-duty supervisor and station master. The on-duty supervisor or station master should immediately contact the manufacturer to identify the cause and address it immediately. During the process, closely monitor any changes in the icing or frost. If there is a tendency for the accident to escalate, immediately proceed with tank draining or stop the filling operation, and close the relevant emergency shut-off valves at the inlets and outlets.

Regularly inspect the storage tank's connecting pipes, valves, etc., for frost formation. Report any issues promptly to the on-duty supervisor, who will then arrange for personnel to address the situation.

Regularly inspect the pressure gauge, level gauge, and thermometer of the storage tank to ensure the displayed values are normal. 7. Regularly check the sealing performance and operation of the valves connected to the tank to ensure proper functioning.

Regularly inspect and calibrate safety valves, pressure gauges, level gauges, and thermometers as per regulations to ensure proper operation and promptly update the equipment inventory records.

Regularly carry out anti-corrosion treatment on the exterior shell of storage tanks and perform external cleaning and maintenance on the pressure gauges, level gauges, and thermometers of the tanks.

Regularly perform rust removal and anti-corrosion treatment on easily corroded parts such as pressure and level control instruments' three-way valves in storage tanks.

11. Conduct annual or as-needed vacuum level inspections on the storage tanks to monitor their operational status.

Jiangxi 60-cubic-meter LNG Storage Tank, Hunan 100-cubic-meter Natural Gas Storage Tank, 30-cubic-meter LNG Storage Tank Price