Scully

Scully

Scully Signal Company is a U.S.-based specialist in overfill prevention, static grounding and vapor recovery safety systems for the petroleum, chemical and bulk liquid transport industries, with a heritage spanning more than 80 years. The company designs and manufactures overfill protection monitors, dynamic self-checking ground verification systems, optic and thermistor sensors, and the connector hardware used to interface tank trucks, rail cars and storage tanks with loading rack safety controls. Scully systems are deployed at petroleum terminals, fuel depots, chemical loading racks, airports and marine facilities worldwide to prevent overfill spills, verify proper electrical grounding before product transfer begins, and comply with API, OSHA and NFPA safety codes for flammable liquid handling. Its Intellitrol and Dynacon product lines are recognized industry standards for tank truck loading safety. Known for rugged, fail-safe design and long field service life in demanding fuel-handling environments, Scully components support incident-free loading operations, regulatory compliance and spill prevention across global petroleum and chemical distribution infrastructure.

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Scully 22485 Green Thermistor Plug and Cable Assembly

Scully 22485 Green Thermistor Plug & Cable Assembly (4 J-Slot)

Scully

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Frequently Asked Questions

What does a Scully overfill prevention system do?
It monitors sensors on the tank truck compartments and stops product loading if any compartment approaches overfill. This prevents spills at loading racks.
What is dynamic self-checking in Scully monitors?
Dynamic self-checking continuously tests the sensors and circuit so a failed sensor cannot give a false permit. The system fails safe and blocks loading when a fault is found.
Do Scully systems verify truck grounding?
Yes, Scully ground verification confirms a proper electrical bond to the truck before transfer starts. This reduces the risk of static ignition.
Are Scully systems compatible with optic and thermistor sensors?
Scully rack monitors such as Intellitrol work with both optic and thermistor compartment sensors. This allows mixed fleets to load at the same rack.
Which standards do Scully systems help meet?
Scully systems support compliance with API RP 1004, NFPA and OSHA requirements for bottom loading and flammable liquid handling. They are widely used at petroleum terminals.