Earth-Rite® DGS
Newson Gale’s dual grounding system with system interlocks and visual indication
Learn more about Industry Standards and Guidelines relating to static electricity in explosive atmospheres:
- Gain insights into the specification of HAZLOC-certified equipment.
- Understand standards referenced in the industry.
- Learn about the selection of HAZLOC equipment.
- Evaluate competency requirements for personnel.
- Navigate HAZLOC equipment documentation.
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Overview of the Earth-Rite® DGS
The Earth-Rite® DGS (Dual Grounding System) has two independent ground monitoring circuits that allow operators to ground and continuously monitor two items of metal conductive plant equipment concurrently to 10 ohms or less, such as two bulk transportation vehicles or other metallic vessels like EX IBCs and metal drums. This feature is commonly used to ground trucks and railcars during transloading operations or to ground up to two trucks or railcars that are being loaded/unloaded at dedicated loading rack installations.
Process control exercised via interlocking the grounding system with the process equipment being used enhances the safety and operating procedure before the process starts. If the ground connection is lost, the Earth-Rite® DGS can shut down the process for one or both of the channels. Interlocking the grounding system with strobes provides personnel working in the surrounding area with a clear view of when the grounded process is underway and protected.
Dual grounding and monitoring channels
The Earth-Rite® DGS enables the grounding and control of two processes with a single system, using its dual grounding and monitoring channels.
Both channels can monitor independent loops to a resistance of 10 ohms or less from the vessels to a common verified ground bar via an intrinsically safe ‘ia’ circuit. This solution provides a secure transloading process when transferring materials from one container to another during metering or processing.
Interlock capabilities
The hazardous location-approved system can interlock with on-board control equipment such as pumps, PLCs, and valves to prevent the flow of product before reliable grounding is in place, ensuring a safe working procedure is followed prior to any other processes taking place.
Once both the tanker trucks and railcar have been successfully grounded, all interlocks will be energized, and high-intensity green LEDs on the system enclosure will flash, giving the operator the go-ahead to begin the product transfer.
A failure to detect a path to ground of 10 ohms or less resistance at any time, for example by removing the clamp, will safely shut down the transfer of product provided it is interlocked correctly through the PLC or pump control system.
Typical applications
- Two metal drums
- Two EX IBCs
- Two railcars
- Transloading (railcar to tankers trucks/tank trucks or tankers trucks/tank trucks to railcar)
- LACT (Lease Automatic Custody Transfer) skids
Or any combination of the plant items above.
Installation
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Newson Gale has an extensive product range that can be tailored to your processes and the range of HAZLOC classifications at your location.
The most effective way to identify what is applicable for your operations is by speaking with our team. They will provide in-depth information on the products, features and how the range of options can be tailored to your needs.
