Scully Ground and Overfill Protection
Overfill Prevention & Safety Solutions
Scully Signal Company is a global leader in safety and control solutions for fluid handling operations. Their systems are designed to enhance operational safety, prevent overfill incidents, verify proper grounding, and monitor liquid levels across industries, including petroleum, chemical processing, aviation, and industrial fluid handling.
These solutions help operators improve delivery efficiency, reduce operational risk, and maintain compliance with industry standards at terminals, storage facilities, fleets, and tank loading operations.
Product Portfolio
Scully offers a complete range of integrated safety and control solutions, including:
- Electronic monitoring systems
- Intrinsically safe level sensors
- Tank gauging equipment
- Overfill prevention devices
- Static grounding verification systems
- Delivery nozzles and flow control components
- Supporting accessories
Engineered for durability and reliability, these products are built to withstand demanding field conditions and provide long service life in critical fluid transfer and storage applications.
Overfill Prevention Systems
Scully pioneered overfill prevention technology and continues to lead the industry with advanced electronic and mechanical solutions for safe, efficient fluid transfer. These systems protect personnel, equipment, and the environment by preventing overfill events, enabling automatic shutdowns, and ensuring compliance with industry regulations.
System Capabilities
Overfill Prevention Controllers
Stand-alone and rack-mounted controllers support single or multi-compartment applications. Integrated self-checking circuitry continuously monitors wiring, sensors, and internal electronics to detect faults and wet conditions in real time.
Auto-Detect Loading Systems
These integrated systems combine overfill prevention, static grounding verification, and vehicle identification to ensure safe and controlled rack loading operations.
Multi-Point Level Controllers
Designed for precise high- and low-level detection, these controllers provide spill prevention and pump/valve control outputs, delivering SIL-capable performance for critical environments.
Together, these technologies provide a comprehensive approach to overfill prevention and monitoring, helping operators reduce risk, maintain safe operations, and comply with regulatory requirements.
Static Grounding & Bonding Systems
Scully grounding and bond verification equipment ensures a positive static ground path during loading operations to safely dissipate static electricity and prevent ignition hazards. Sensor plugs, cables, and grounding controllers integrate seamlessly with overfill systems for fully verified liquid transfer safety.
Liquid Level Sensors & Detection
Scully provides a wide range of intrinsically safe sensors for liquid detection, overfill prevention, and compartment verification:
Optic Sensors – Two-wire and five-wire sensors for reliable overfill protection and compartment monitoring, compatible with rack and vehicle control systems.
Chemical-Service Sensors (ScuL-Sense™) – Stainless steel optic sensors engineered for chemical and petroleum applications, offering broad fluid compatibility and SIL-certified performance.
Portable Water & Level Detectors – Handheld devices for rapid water detection in storage tanks without paste sticks, suitable for multiple fuel types.
Tank Gauges, Fill Signals & Delivery Equipment
Scully mechanical field devices provide visual and audible feedback during fluid transfer operations:
Fill Signal Alarms – Audible indicators in vent lines alert operators during tank filling to prevent overfills.
Tank Level Gauges – Float-operated gauges with durable cable assemblies deliver clear, easy-to-read level indication.
Locking Tank Caps – Tamper-resistant caps enhance fuel security and prevent unauthorized access.
Delivery Nozzles & Flow Controls – Engineered components ensure safe, controlled, and efficient product transfer.
Key Features & Benefits
- Continuous self-checking technology enhances reliability and prevents spills
- Static grounding verification ensures safe bonding during transfers
- Intrinsically safe sensors suitable for hazardous environments
- Rugged mechanical components for long-term field use
- Modular system integration with rack controls, alarms, and identification systems
Applications
Scully systems are widely used across industries, including:
- Fuel terminals and loading racks
- Bulk storage and delivery operations
- Aviation fueling systems
- Chemical processing and hazardous fluid handling
- Railcar and tank truck loading
- Heating oil delivery and industrial storage
By combining electronic monitoring with durable mechanical components, these systems protect personnel, equipment, and the environment while reducing operational risk.
Parts, Support & Integration
Liquid Meter Company provides expert support for Scully products, including system design, integration services, product selection guidance, and replacement parts. Our team ensures that overfill prevention and detection systems are specified, installed, and maintained for safe, reliable, and long-term performance.
