Bulk Liquid & Fuel Delivery AST Overfill Alarm Systems

Bulk liquid distribution facilities and fuel delivery operations require precise monitoring to prevent overfills, spills, and equipment damage. The Meco AST Overfill Alarm provides a loud, reliable audible alert when liquid levels in aboveground storage tanks (ASTs) reach a preset high point, allowing operators to take immediate action and maintain safe transfer procedures.

From fuel terminals to bulk liquid depots, Meco alarms help operators reduce risk while supporting operational efficiency and regulatory compliance.

Bulk handling operations demand alarm systems that are durable, intrinsically safe, and easy to use. The Meco AST Overfill Alarm is a battery-operated audible alarm designed to alert operators during tank filling, offloading, or transfer activities.

When the liquid reaches the alarm point, a 100 dB pulsating audible signal notifies personnel, preventing overfill incidents and minimizing potential environmental and operational risks.

Overfills during bulk liquid transfer can result in costly product loss, equipment damage, and regulatory penalties. The Meco AST Overfill Alarm helps prevent these incidents by providing immediate notification when tanks approach capacity.

Key features for bulk distribution include:

• Adjustable float switch for precise alarm level settings
• Push-button test before filling or offloading
• Audible alarm reset after high-level events
• Compatible with protected or standard aboveground tanks

These features ensure operators can safely manage high-volume liquid transfers and maintain consistent workflow.

Fuel and chemical transfer environments require equipment that meets strict safety standards. The Meco AST Overfill Alarm is Certified Intrinsically Safe to ANSI/UL 913, making it suitable for use in potentially hazardous locations.

Standards compliance includes:

• NFPA 30A
• UL 2244
• UFC requirements

This compliance ensures the alarm supports safety programs and meets industry regulatory expectations.

The Meco AST Overfill Alarm can be powered using either a 9-volt battery or 12-volt intrinsically safe line power, providing flexibility for different facility configurations.

• 9 V battery operation with ultra-low power consumption in non-alarm conditions
• Optional 12 V wiring for continuous line power
• Minimal maintenance with long-lasting battery life

Note: Certain regions of Canada require wiring to a 12 V source. Always check local regulations before installation.

For facilities using double-wall tanks or secondary containment, the Meco alarm can be configured as an interstitial leak detector. Probe lengths can be custom-built to match tank manufacturer specifications, providing early detection of leaks and additional safety assurance. 

Bulk distribution operations often run continuously under variable conditions. The Meco AST Overfill Alarm is engineered for long-term reliability and minimal maintenance.

Operating temperature ranges:

• 9 V Alkaline: −4°F to +130°F
• 9 V Lithium: −40°F to +158°F (recommended for extended life)

No power draw during normal operation ensures the system remains efficient over extended periods.

Meco AST Overfill Alarms are frequently used in:

• Fuel terminals and bulk plants
• Liquid distribution depots
• Delivery vehicle offloading stations
• Industrial bulk liquid storage facilities
• High-volume transfer operations

These alarms provide operators with immediate, actionable alerts that enhance safety and prevent costly spills.

Whether you are upgrading existing equipment or planning a new installation, our team can help determine the right alarm configuration for your wastewater or water treatment application.  Whether you need a single alarm or multiple units for large-scale operations, our team can help you select the right configuration for your bulk liquid or fuel transfer application. 

Meco provides intrinsically safe AST overfill alarm systems for bulk liquid distribution and fuel delivery facilities across the United States and Canada.