The AFL Oil Stop Valve (OSV) recently demonstrated its value for a large electrical utility when a fire started at one of its electrical substations. Power transformers installed in substations typically are filled with 2,000 to 10,000 gal of oil. In this case, the fire damaged a power transformer, causing a subsequent oil spill.
Fortunately, 15 years earlier, an AFL OSV was installed in the water discharge sump. The OSV performed as designed, automatically closing upon detection of the oil spill. This rapid response and successful operation directly pre- vented a major environmental disaster.
Facilities that store oil or utilize oil-filled machinery and equipment are familiar with the requirement to design storm water systems in a way that restricts the release of oil into surrounding environments. The U.S. EPA’s Spill Prevention, Control and Countermeasure (SPCC) rule was created to assist facilities in developing safe containment systems and com- pliant spill control plans. This valve provides immediate compliance with SPCC rules, but more importantly, it protects surrounding environments from accidental oil spills.
The AFL OSV is a dependable spill control valve that automatically contains oil spills of any size. It consists of only one moving part, a ballasted float that has a specific gravity between that of oil and water. When an oil spill occurs, the float loses buoyancy as the oil level increases. It then securely seats itself on the discharge port, thereby mitigating the oil spill. With an optional AFL Slave Valve installed, the valve also will automatically reopen once the spill is remediated and the sump has been refilled.
The valve is easy to install in existing storm water systems and is available in a variety of sizes and two different materials. AFL’s OSV is an economical and effective solution that easily provides SPCC compliance for facilities with minimal disruption.