SENECA COMPANIES TANK CLEANING / FUEL POLISHING OVERVIEW JULY 2014
Table of Contents • Process Description • Safety Systems • Applications and Solutions • Resources and Capabilities www.senecaco.com 2
The Process www.senecaco.com 3
The Process - Overview The typical Leighton O’Brien tank cleaning process includes: Stage 1 Removal of free water, sludge, sediment and rust Our tank cleaning process restores fuel and tank to its optimal condition with the successful removal of: Stage 2 Filtration and polishing of fuel 1) emulsified and free water 2) suspended scale, sediment and rust Stage 3 Returning settled product to tank and drumming off waste www.senecaco.com 4
The Process – Stage 1 Removal of Free Water, Sludge, Sediment and Rust Removing free water, sediment and rust by • Stage 1 Removal of free water, sludge, traversing tank cleaning equipment along the sediment and rust entire tank floor Collect waste and fuel in a 500-gallon tank for • Stage 2 settlement Filtration and polishing of fuel Repeat this stage until all free water, sediment • Stage 3 and rust has been removed from the tank Returning settled product to tank floor by viewing samples from all accessible and drumming off waste points www.senecaco.com 5
The Process – Stage 1 Removal of Free Water, Sludge, Sediment and Rust Stage 1 Removal of free water, sludge, sediment and rust 1 to 500 gallons of Fuel, Water and Sludge is drawn from the bottom of the underground tank and pumped into a holding tank and left for a pre-determined time to allow water, sludge and sediment to settle. P.Pat No. 2007906092 Fuel and fuel tank treatment process www.senecaco.com 6
The Process – Stage 2 Filtration and Polishing of Fuel Stage 1 Fuel is circulated through a coalescer, a fuel • Removal of free water, sludge, conditioner and filters to remove free and sediment and rust emulsified water as well as particulate matter. Stage 2 All tank cleans can be finished with a 2 micron • Filtration and polishing of fuel filter with the tank cleaning equipment on the tank floor. Stage 3 Returning settled product to tank Repeat sampling from the tank floor by • and drumming off waste viewing samples from all accessible points. www.senecaco.com 7
The Process – Stage 2 Filtration and Polishing of Fuel Stage 2 Filtration and polishing of fuel Fuel is circulated through a coalescer, fuel conditioner and filters removing free water and particulate matter. P.Pat No. 2007906092 Fuel and fuel tank treatment process www.senecaco.com 8
The Process – Stage 2 Filtration and Polishing of Fuel Stage 2 Filtration and polishing of fuel The fuel is restored to its optimal clear and bright condition as it is passed though a coalescer, fuel conditioner, water blocks and filters down to 2 microns to remove fine invisible particles, as well as entrained P.Pat No. 2007906092 Fuel and fuel tank treatment process and emulsified water. www.senecaco.com 9
The Process – Stage 3 Returning Settled Product & Drumming Off Waste Stage 1 At this stage, the sediment and water has • Removal of free water, sludge, been given time to settle. sediment and rust The remaining fuel in the settlement tank is • Stage 2 drawn off the top, treated and returned to the Filtration and polishing of fuel tank. The remaining waste in the settlement tank is • Stage 3 Returning settled product to tank carted and disposed of in accordance with EPA and drumming off waste and state regulations. www.senecaco.com 10
The Process – Stage 3 Returning Settled Product & Drumming Off Waste Stage 3 Returning settled product to tank and drumming off waste Remaining Waste in settlement tank is carted and disposed with in accordance to State and EPA regulations. At this stage the sediment and water has been given time to settle. Remaining fuel in the settlement tank is drawn off the top, treated and returned to the P.Pat No. 2007906092 Fuel and fuel tank treatment process tank. www.senecaco.com 11
Safety Systems www.senecaco.com 12
Safety Systems All Leighton O’Brien tank cleaning services subscribe to the highest standards for safety – including: Complete bunding of tank, pump, filters, etc. • Pump air supply control and shutdown system • Fire extinguishers • Complete auto and pedestrian barricading • Settlement tank overflow protection system • www.senecaco.com 13
Safety Systems Leighton O’Brien Static Management System Testing of all equipment to ensure earthed prior to truck commissioning • Bolted earth straps on all equipment • 2x static earth reels • Continuity tester • Personal static arm band for filter changes • Steps to truck designed for personnel grounding • Natural fiber cloths (no nylon, polyester, rayon, etc.) • A quality static management system is the best defense against an incident. www.senecaco.com 14
Safety Systems Additional Precautions Technician training and certification • 3-way valve – reduced changing of hoses • System hazoped – ensures design prior to commissioning • Diesel air compressor • Air diaphragm pump • No relief value needed – No shaft seal failure – No splash returning off liquid • Regular HSE audits of technicians • www.senecaco.com 15
Applications and Solutions www.senecaco.com 16
Applications and Solutions Rust Particulate Need to eliminate the rust particulate • problem from the source at the tank bottom prior to work commencing on the lines and the pumps Very fine powder – our settlement tank is • able to remove this prior to the tank stirring up the particulates into suspension The tank contents are processed through • a 2 micron filter www.senecaco.com 17
Applications and Solutions Reduce Filter Servicing High cost of under pump and nozzle filter • servicing and replacement outside of the regular service maintenance contract Best to treat the problem at the source • by removing sludge and particulate from the tank floor Potential to extend the working life of • fuel system equipment www.senecaco.com 18
Applications and Solutions Incorrect ATG Readings High cost to install ATG probes • Excessive particulate and sludge can • cause false water readings and false high water alarms This can lead to situations where staff at • the site ignore these alarms and don’t trust the ATG readings Potential to mask a real water ingress • issue www.senecaco.com 19
Applications and Solutions Ethanol Ethanol scours tank walls leaving • particulate matter to gather on the tank floor Water is a real threat • Can lead to equipment issues and phase • separation issue if not treated More pronounced with steel tanks • www.senecaco.com 20
Applications and Solutions Biodiesel Again, water is a real threat, especially • when bacteria grows between the water and fuel interface on the bottom of the tank Biocide treatment kills bacteria however • the sludge left behind can cause filter problems The settlement tank is able to remove • this prior to the tank stirring up the particulates into suspension www.senecaco.com 21
Applications and Solutions Tank Conversions Product quality issues can arise if tank • conversion not handled correctly Issues such as insufficient water and • product removal can lead to phase separation and flash point problems www.senecaco.com 22
Resources and Capabilities www.senecaco.com 23
Seneca / Leighton O’Brien Resources In the U.S., Leighton O’Brien maintains: Five(5) standard trucks and one smaller- • based truck Truck locations: • – Colorado Springs (LOB Unit) – San Antonio (LOB Unit) – Houston (LOB Unit) – Tulsa (Seneca Unit) – Des Moines (Seneca Unit) www.senecaco.com 24
Seneca / Leighton O’Brien Capabilities Entire tank cleaning system • Proven to be extremely reliable and safe • Engineered – Hazoped • Magnetic strainer, coalescer and fuel conditioner • Final product spec of 2 micron • Fast process flow of up to 40 gals/ minute • Patented design for gasoline • Efficient office support with a single contact • www.senecaco.com 25
Seneca / Leighton O’Brien For Those Who Know www.senecaco.com 26
Thank You For more information, please visit www.senecaco.com/fuelpolishing or www.leightonobrien.com www.senecaco.com 27
Recommend
More recommend
