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LNG Tank Gauging Case Study

Client Background: A major LNG terminal operator with several storage tanks.

Challenge: The client needed to improve their inventory management and ensure accurate measurement of LNG levels in their storage tanks.

Solution: They decided to implement a state-of-the-art LNG tank gauging system. This system included:

  1. Guided Wave Radar (GWR) Level Transmitters: Installed on each tank, these transmitters accurately measure the level of LNG in the tanks using radar technology. They provide continuous, real-time level data.
  2. Temperature and Pressure Sensors: Placed strategically, these sensors measure the temperature and pressure of the LNG, which are crucial for accurate volume calculations.
  3. Tank Gauging System (TGS): The TGS integrates all the data from the level transmitters, temperature sensors, and pressure sensors. It calculates the volume of LNG in each tank based on the measured data.
  4. SCADA System: The TGS is connected to a Supervisory Control and Data Acquisition (SCADA) system, which provides a user interface for monitoring the LNG levels and other parameters. It also allows operators to set alarms for critical conditions.

Outcome: After implementing the LNG tank gauging system, the client experienced several benefits:

  1. Improved Accuracy: The system provided highly accurate and reliable measurements of LNG levels, helping the client manage their inventory more effectively.
  2. Cost Savings: By reducing the risk of overfilling or underfilling tanks, the system helped the client avoid costly errors.
  3. Enhanced Safety: Accurate measurement of LNG levels is crucial for safety. The system helped ensure that tanks were neither overfilled nor underfilled, reducing the risk of accidents.
  4. Operational Efficiency: The real-time data provided by the system allowed operators to make informed decisions quickly, improving overall operational efficiency.

The implementation of an LNG tank gauging system helped the client improve inventory management, enhance safety, and achieve cost savings, demonstrating the value of such systems in LNG storage facilities.

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Proservo Servo Tank Gauge

The proservo servo tank gauge is a reliable and accurate tank gauging system used in various industries for measuring the level, interface, and temperature of liquids in storage tanks.

It uses servo-operated, non-contacting measurement technology, which ensures high precision and reliability even in challenging environments.

The servo tank gauge system is designed to provide real-time data on tank levels, which is crucial for inventory management, safety, and operational efficiency.

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Tank gauging system for underground storage tanks

For underground storage tanks, a reliable tank gauging system is crucial for monitoring the tank’s contents and ensuring regulatory compliance. Here are some key components and considerations for a tank gauging system for underground storage tanks:

  1. Level Measurement: Use level sensors or gauges suitable for underground applications to accurately measure the liquid level inside the tank.
  2. Leak Detection: Include leak detection sensors or systems to quickly identify any leaks or spills, which are especially critical for underground tanks to prevent environmental contamination.
  3. Temperature Monitoring: Monitor the temperature of the tank contents, as temperature changes can affect the volume and characteristics of the stored liquids.
  4. Data Logging and Reporting: Implement a system for logging and reporting tank data, including level, temperature, and leak detection information, to ensure compliance with regulations and enable efficient management of the tank.
  5. Remote Monitoring: Consider a system that allows for remote monitoring of the tank’s status, which can provide real-time alerts and notifications of any issues.
  6. Integration with SCADA Systems: Integrate the tank gauging system with SCADA (Supervisory Control and Data Acquisition) systems for centralized monitoring and control of multiple tanks or facilities.
  7. Compliance: Ensure that the tank gauging system complies with relevant industry standards and regulations, such as API (American Petroleum Institute) standards or local environmental regulations.
  8. Maintenance and Calibration: Regular maintenance and calibration of the tank gauging system are essential to ensure accurate and reliable performance over time.

By incorporating these components and considerations, you can create an effective tank gauging system for underground storage tanks that helps ensure safe and compliant operations.

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Compact and portable density meter

A compact and portable density meter is a device used to measure the density of liquids or solids. It is designed to be small and lightweight for easy transport and use in various locations. Some key features to look for in a compact and portable density meter include:

  1. Size and Weight: It should be small and lightweight, making it easy to carry and use in different settings.
  2. Accuracy: The density meter should provide accurate and reliable measurements.
  3. Measurement Range: It should have a wide measurement range to accommodate different types of samples.
  4. Display: A clear and easy-to-read display is important for quickly viewing measurements.
  5. Battery Life: A long battery life is essential for extended use in the field without the need for frequent recharging.
  6. Durability: The density meter should be rugged and durable to withstand the rigors of field use.
  7. Ease of Use: It should be simple and intuitive to operate, even for users with minimal training.
  8. Connectivity: Some models may offer connectivity options such as Bluetooth or USB for data transfer and analysis.

The compact and portable density meter should be reliable, accurate, and easy to use, making it ideal for field applications where portability and convenience are important.

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LNG Tank Gauging Sending Module

The LNG tank gauging sending module is a component used in LNG (Liquefied Natural Gas) tank gauging systems. These systems are used to measure and monitor the level of LNG in storage tanks. The sending module is responsible for transmitting the level data from the tank to the control system for monitoring and control purposes.

The sending module typically includes sensors for measuring the level of LNG in the tank, as well as electronics for processing and transmitting the level data. The sensors can be of various types, such as radar, servo, or hydrostatic sensors, depending on the specific requirements of the application.

The sending module is a critical component of the LNG tank gauging system, as it provides the essential level measurement data that is used for inventory management, safety monitoring, and operational control of the LNG storage facility.

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Different Commercial Servo Tank Gauge

Commercial servo tank gauges are used for accurately measuring and monitoring the level of liquids in tanks. They are commonly used in industries such as oil and gas, chemical, and food and beverage. Here are a few different types of commercial servo tank gauges:

  1. Radar-based servo tank gauges: These gauges use radar technology to measure the level of liquid in a tank. They are highly accurate and can be used in a wide range of tank sizes and shapes.
  2. Ultrasonic-based servo tank gauges: Ultrasonic tank gauges use sound waves to measure the level of liquid in a tank. They are often used in tanks with corrosive or volatile liquids.
  3. Hydrostatic-based servo tank gauges: Hydrostatic tank gauges use the pressure of the liquid in the tank to measure the level. They are simple and reliable but may require calibration for accurate measurements.
  4. Guided wave radar servo tank gauges: These gauges use guided wave radar technology to measure the level of liquid in a tank. They are highly accurate and can be used in tanks with agitated or turbulent liquids.
  5. Capacitance-based servo tank gauges: Capacitance tank gauges measure the level of liquid by detecting changes in capacitance between the probe and the tank wall. They are suitable for tanks with non-conductive liquids.

These are just a few examples of the different types of commercial servo tank gauges available. The choice of gauge depends on factors such as the type of liquid, tank size and shape, and accuracy requirements.

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Why Radar Technology for Tank Gauging System

Radar technology is commonly used in tank gauging systems for several reasons:

  1. Accuracy: Radar technology provides highly accurate level measurements, even in challenging tank environments with factors like temperature variations, vapors, and foam.
  2. Non-contact Measurement: Radar sensors do not need to come into direct contact with the tank contents, reducing maintenance requirements and the risk of contamination.
  3. Versatility: Radar sensors can be used in a wide range of tank types and sizes, including those with agitated or corrosive liquids.
  4. Continuous Level Monitoring: Radar sensors can provide continuous level monitoring, allowing for real-time tracking of tank levels.
  5. Remote Monitoring: Radar sensors can be connected to monitoring systems for remote data access and control.
  6. Safety: Radar sensors are often used in hazardous environments because they are intrinsically safe and do not pose a risk of sparking.

The radar technology offers a reliable and accurate solution for tank gauging, making it a popular choice in industries such as oil and gas, chemical, and water treatment.

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Viscosity & Density of Portable Density Meter

A portable density meter, also known as a handheld density meter or portable densitometer, is a device used to measure the density and sometimes the viscosity of liquids. The viscosity and density of a liquid are related but distinct properties.

  1. Density: Density is a measure of how much mass is contained in a given volume of a substance. It is typically expressed in units such as grams per cubic centimeter (g/cm³) or kilograms per liter (kg/L). Portable density meters use various principles, such as oscillation, to measure the density of liquids quickly and accurately.
  2. Viscosity: Viscosity is a measure of a fluid’s resistance to flow. It is related to the internal friction within the fluid. Viscosity is typically measured in units such as centipoise (cP) or millipascal seconds (mPa·s). Portable density meters may not directly measure viscosity, but some models can estimate viscosity based on the density and temperature of the liquid.

Portable density meters are valuable tools in various industries, including food and beverage, pharmaceuticals, and chemicals, where accurate density measurements are important for quality control, process monitoring, and product development.

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Guided wave radar for inventory tank gauging system

Guided wave radar (GWR) is a popular technology for inventory tank gauging systems due to its accuracy, reliability, and ability to perform in challenging environmental conditions. Here’s how GWR works and why it’s used:

  1. Principle of Operation: GWR works by sending microwave signals down a probe (waveguide) extending into the tank. When the signal reaches the liquid surface, it is reflected back to the sensor. The time it takes for the signal to return is used to calculate the level of the liquid in the tank.
  2. Accuracy and Reliability: GWR is known for its high level of accuracy, even in tanks with agitated or turbulent surfaces. It can also accurately measure interface levels in tanks with multiple liquid layers.
  3. Versatility: GWR can be used in a wide range of tank types and sizes, including those with narrow openings or internal obstructions. It can also handle a variety of liquids, from water to harsh chemicals.
  4. Ease of Installation and Maintenance: GWR tank gauging systems are relatively easy to install and require minimal maintenance compared to other technologies. The probes are typically inserted from the top of the tank, eliminating the need for tank entry.
  5. Safety: GWR is a safe technology, as it does not require direct contact with the liquid being measured. This is particularly important when dealing with hazardous or toxic materials.
  6. Temperature and Pressure Resistance: GWR tank gauging systems can operate effectively in extreme temperatures and pressures, making them suitable for use in a wide range of industries and applications.

The guided wave radar is a reliable and versatile technology for inventory tank gauging, offering high accuracy and performance in challenging environments.

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LNG tank gauging increase safety

LNG tank gauging systems play a crucial role in increasing safety in LNG storage and transportation. These systems help operators monitor the level, temperature, and pressure of LNG in tanks, which is essential for safe and efficient operation. Here are some key ways in which LNG tank gauging systems contribute to safety:

  1. Preventing Overfilling: Accurate level monitoring helps prevent overfilling, which can lead to spills or even tank rupture. Overfill prevention is critical to avoid safety hazards and environmental damage.
  2. Detecting Leaks: Tank gauging systems can help detect leaks by monitoring changes in the level and pressure of LNG in the tank. Early detection of leaks is essential for preventing accidents and minimizing the risk of fires or explosions.
  3. Maintaining Safe Operating Conditions: Monitoring temperature and pressure helps ensure that LNG is stored and transported within safe operating conditions. This helps prevent incidents such as boiling liquid expanding vapor explosions (BLEVEs).
  4. Emergency Response: Tank gauging systems provide real-time data that can be used for emergency response planning. In the event of an emergency, this data can help operators and emergency responders make informed decisions to mitigate risks.
  5. Compliance: Many safety regulations and standards require the use of tank gauging systems for LNG storage and transportation. Using these systems helps ensure compliance with these regulations, which is essential for maintaining a safe operating environment.

The LNG tank gauging systems are a critical component of safety management in LNG facilities. They provide essential data for safe operation, help prevent accidents, and facilitate effective emergency response.