Petroleum Storage Tank AST Overfill Alarm Systems

Aboveground petroleum storage tanks require reliable overfill protection to reduce the risk of spills, environmental damage, and regulatory violations. The Meco AST Overfill Alarm is designed to provide a simple, dependable audible alert when product levels reach a preset high point during tank filling operations.

Used across fuel terminals, bulk storage facilities, and fleet fueling sites, Meco alarms help operators monitor tank levels and respond quickly during fuel transfer.At Meco, Inc., our precision machining services are designed to meet the high standards of the industrial manufacturing industry. We use only the best equipment and materials to ensure maximum performance.

Petroleum storage environments demand alarm systems that are safe, durable, and easy to maintain. The Meco AST Overfill Alarm is a battery-operated, intrinsically safe audible alarm engineered specifically for use in aboveground storage tanks containing petroleum products.

The alarm activates when liquid levels reach a predetermined height, alerting operators with a loud, pulsating 100 dB signal to help prevent overfill events before they occur. Our team of experts can handle all of your custom fabrication needs, from design to installation. We have the experience and expertise to create unique solutions for your industrial manufacturing needs.

The Meco AST Overfill Alarm assists in overfill prevention by providing a clear, immediate alert during filling operations. The adjustable float switch allows operators to set the alarm point to meet site-specific requirements.

Key features for petroleum storage include:

• Audible overfill alert at a preset tank level
• Adjustable float switch for flexible alarm point settings
• Simple push-button test and alarm reset
• Compatible with protected and standard ASTs

This straightforward design allows operators to test the alarm before filling and reset it after an alarm event, supporting safer fueling procedures.

Safety and compliance are critical in petroleum storage environments. The Meco AST Overfill Alarm is Certified Intrinsically Safe to ANSI/UL 913 and designed to meet applicable industry standards.

Compliance support includes:

• Meets NFPA 30A requirements
• Meets UL 2244 standards
• Meets UFC requirements

These certifications make the Meco alarm suitable for use in hazardous locations where petroleum vapors may be present.

The Meco AST Overfill Alarm is designed for flexibility in the field. All alarm models can operate using either 9-volt battery power or a 12-volt intrinsically safe power source.

• 9 V battery operation provides years of service life due to ultra-low power consumption
• No power draw during non-alarm conditions
• Optional 12 V line power connection for wired installations

Note: For compliance in certain regions of Canada, alarms must be wired and powered by a 12-volt source. Always refer to local regulations prior to installation.

 In addition to overfill protection, the Meco AST Overfill Alarm can be configured to function as an interstitial leak detector. When used in this configuration, Meco can custom build probe lengths to meet tank manufacturer specifications.

This allows facilities to use a single alarm solution for multiple monitoring needs depending on tank design and application.

The Meco AST Overfill Alarm is designed to operate efficiently in demanding petroleum storage environments.

Operating temperature ranges:

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

With no power consumption during normal operation and ultra-low draw after alarm reset, the system delivers dependable performance with minimal maintenance.

Meco AST Overfill Alarms are commonly used in:

• Fuel storage terminals 
• Bulk petroleum storage facilities
• Fleet fueling operations
• Generator fuel tanks
• Industrial fuel containment systems

These applications benefit from a reliable, audible alert system that supports safe tank filling and regulatory compliance. Our team of experts can handle all of your custom fabrication needs, from design to installation. We have the experience and expertise to create unique solutions for your industrial manufacturing needs.

Whether you need a single overfill alarm or bulk quantities for multiple tanks or locations, our team can help determine the right configuration for your petroleum storage application. 

Meco provides intrinsically safe AST overfill alarm systems for petroleum storage tanks throughout the United States and Canada.