BARRING DEVICE - MANUAL vs PNEUMATIC vs ELECTRIC vs FLYWHEEL LOCKING DEVICE
DIFFERENCES AMONG SEVERAL TYPES OF ARRANGEMENTS IN BARRING DEVICES
The barring device in a reciprocating compressor is used to keep the compressor shaft stationary during maintenance or inspection activities. There are several types of arrangements available for barring devices, each with its own characteristics and advantages. Here are the differences among some common types of barring devices used in reciprocating compressors:
Manual Barring Device:
- This type of barring device requires manual operation by a maintenance technician.
- It typically consists of a hand-operated crank or lever mechanism connected to the compressor shaft.
- Manual barring devices are straightforward and reliable, but they require physical effort from the operator.
Pneumatic Barring Device:
- A pneumatic barring device utilizes compressed air to rotate the compressor shaft.
- It is typically controlled by a pneumatic valve that activates the rotation.
- Pneumatic barring devices are convenient to use as they require less physical effort compared to manual devices.
- They provide precise control over the rotation speed and can be easily integrated into automated control systems.
Electric Barring Device:
- An electric barring device uses an electric motor to rotate the compressor shaft.
- It is controlled by an electrical switch or control panel.
- Electric barring devices are convenient to operate as they require minimal physical effort.
- They offer precise control over the rotation speed and can be integrated with automation systems for remote operation.
Flywheel Locking Device:
- A flywheel locking device utilizes a mechanical lock or brake to hold the compressor shaft in a fixed position.
- It is typically engaged by a lever or actuator mechanism.
- Flywheel locking devices provide a secure and stable lock, ensuring the compressor shaft remains stationary.
- They are commonly used in conjunction with other barring devices for additional safety during maintenance.
When selecting a barring device arrangement for a reciprocating compressor, factors such as the specific compressor design, application requirements, and operational considerations should be taken into account. It is important to ensure that the selected barring device arrangement meets the safety standards, is compatible with the compressor system, and can be easily maintained and operated. Consulting with the compressor manufacturer or a qualified engineer with experience in compressor systems can help in determining the most suitable barring device arrangement for a particular application.
WHY, WHEN, WHERE, WHAT, WHICH AND HOW TO APPLY IN BARRING DEVICES MOUNTED IN RECIPROCATING COMPRESSORS, SEVERAL TYPES OF ARRANGEMENTS LIKE MANUAL, PNEUMATIC, ELECTRIC, FLYWHEEL LOCKING DEVICES.
Why: The purpose of using barring devices in reciprocating compressors is to keep the compressor shaft locked and stationary during corrective maintenance. This ensures the safety of maintenance personnel and prevents accidental start-ups or rotation of the compressor while maintenance tasks are being performed. Barring devices contribute to improved reliability by minimizing the risk of damage to the compressor components during maintenance.
When: Barring devices are used during planned maintenance activities or corrective maintenance when repairs or inspections are required on the compressor. They are engaged before maintenance begins and remain in place until the maintenance tasks are completed.
Where: Barring devices are used in reciprocating compressors installed in various industrial settings, including oil and gas plants, refineries, petrochemical facilities, and other applications where reciprocating compressors are used.
What: The different types of barring devices available for reciprocating compressors include manual, pneumatic, electric, and flywheel locking devices. Each type offers a specific mechanism for keeping the compressor shaft locked and stationary.
Which: The choice of barring device arrangement depends on several factors, including the specific compressor design, operational requirements, safety considerations, and available resources. Factors such as the size and capacity of the compressor, accessibility to power sources or compressed air, level of automation desired, and the preference of the operator or maintenance team may influence the selection of the most suitable barring device arrangement.
How: The specific procedure for using a barring device will depend on the type selected. Here is a general outline of how each type is typically used:
Manual: A maintenance technician manually operates a crank or lever mechanism connected to the compressor shaft to rotate or lock it in position.
Pneumatic: Compressed air is supplied to a pneumatic barring device, activating a valve that initiates rotation of the compressor shaft.
Electric: An electric motor is used to rotate the compressor shaft. It is controlled by an electrical switch or control panel.
Flywheel locking: A mechanical lock or brake is engaged by a lever or actuator mechanism to hold the compressor shaft in a fixed position.
In each case, the barring device is engaged before maintenance begins and disengaged once the maintenance tasks are completed, ensuring the compressor remains stationary and locked during the maintenance process.
It is important to follow the manufacturer’s instructions and safety guidelines when using barring devices and to regularly inspect and maintain them to ensure their proper functioning. Consulting with the compressor manufacturer or a qualified engineer can provide further guidance on selecting and using the appropriate barring device arrangement for a specific compressor and application.
PROCEDURES, ACTIONS, STUDIES, MITIGATIONS, RECOMMENDATIONS IN BARRING DEVICES AMONG SEVERAL TYPES OF ARRANGEMENTS
Procedures:
- Establish a clear maintenance procedure that outlines the steps for engaging and disengaging the barring device for each type of arrangement.
- Clearly communicate and train maintenance personnel on the proper procedures to follow when using barring devices.
- Develop a checklist or standard operating procedure (SOP) to ensure that all necessary tasks related to barring device operation are completed.
Actions:
- Conduct regular inspections and maintenance of the barring devices to ensure they are in proper working condition.
- Verify that the selected barring device is suitable for the specific compressor model and application.
- Perform functional testing of the barring device before and after maintenance activities.
- Keep records of barring device usage, inspections, and maintenance for reference and tracking.
Studies:
- Conduct studies and analysis to determine the most appropriate barring device arrangement for the specific compressor design and operational requirements.
- Evaluate the potential risks and hazards associated with each type of barring device and consider their impact on reliability and safety.
- Study the impact of barring device operation on other compressor components, such as the flywheel, crankshaft, and bearings, to ensure compatibility and minimize wear and tear.
Mitigations:
- Implement redundancy or backup systems for critical barring devices to minimize the risk of failure or malfunction.
- Perform regular preventive maintenance on the barring devices to identify and address any potential issues before they cause failures.
- Use safety interlocks or controls to prevent accidental engagement or disengagement of the barring devices.
Recommendations:
- Engage the manufacturer or supplier of the reciprocating compressor for guidance on selecting the most suitable barring device arrangement.
- Follow industry standards and guidelines, such as API 618, for barring device selection, installation, and operation.
- Consider the availability of power sources or compressed air when selecting the type of barring device.
- Evaluate the level of automation desired and the impact on overall system complexity and reliability.
It is crucial to consult with experienced engineers, maintenance professionals, and the manufacturer to ensure the proper implementation of barring devices and adherence to safety practices. Continuous monitoring, inspection, and maintenance of the barring devices are essential to ensure their effectiveness in keeping the compressor locked during corrective maintenance and minimizing the risk of incidents or failures.