This track spill containment design is without the standard rolling raincover and is primarily intended to be used in areas that are under canopy roof or where the costs of collection of rainwater are not enough to justify a track pan with the rolling raincover. The Open Pan design uses the standard Trans Environmental Systems, Inc., TESI, flat steel bottom and NPT hub connections in the ends of the track pan. Both the center pan, model CPO and the side pan, model SPO have slide-out panels on their sidewalls that face the rails. This allows the spill containment pan to snug up under the head of the rails. A removable worker kneeling platform also functions as a manual walk-over platform at the middle of each track pan.
The Open Track Pan Systems can be installed as single pans as shown above or they can be installed snuggly end-to-end with a slight factory modification to the pan end wall that would be adjacent. At these connection points, the standard NPT hub couplings are eliminated and a short nipple-boiler nut arrangement interlinks the two collection basins. These 2″ NPT nipples not only secure the two (or more) pans into a solid, continuous unit but allow for any overflow from one pan to quickly drain into an adjacent pan. When standing alone, a 10 ft. center pan may self-contain 100 gallons of liquids and a 20 ft. unit, double that. A single, 10 ft. long side pan will self-contain 37 gallons.
The Trans Environmental Systems, Inc., TESI, Open Track Pans are designed to be quickly installed by your in-house maintenance force. Each end of these track pans has a bolt down tab on each side and lag bolts are supplied with the unit. When your plant activities change, these pans can be removed and reinstalled with only a few hours of labor.
When evaluating how many track pans one needs, you need to review where the actual overflow or leakage danger or risk is located. There is next to no risk of liquid release or overflowing over the ends of the tankcar where the wheels meet the rails. The major release risk area is only about five or six feet wide, centered on the tank car’s valve area and dome. Purchasing track pans the full length of the tankcar will not add to your release protection but will greatly add to your problems with collected rainwater, snow and blown-in debris. When planning a layout for a string of tankcars of varying length, note how much variation would occur when short tankcars are coupled together than when longer tankcars are coupled together. From the railway safety viewpoint, it is best to break a long string of tankcars into groups of three or four connected tankcars so yard employees may safely walk around the ends of these groups, not crawl under.
Federal EPA regulations, in particular 40 CFR 112, require that transfer of all oil products (including vegetable and animal) will be done over spill containments that have the capability of handling the full volume of the tankcar or other delivery vessel. The regulation does not say that this “full volume” containment must be immediately under the tankcar spur track and no rate of flow drainage from the collector pan is stated in the requirements. When evaluating track pans size and positions, the rate of flow from the actual collection pan to the “full volume” containment or the immediately adjacent track pans should be examined. Other manufacturers of open sheet track pans may use 1″ NPT nipple and boiler nut interconnection methods. TESI uses the largest size available within the given height of the railroad rails. This is a minimum of 2″ NPT and in the case of the end units, two, 3″ NPT coupling hub are supplied at each end for drainage connection.
One of the major advantages of the TESI track pan design is that by using the end wall drainage system, in lieu of a center bottom drain, any solid residue deposited in the track pan is not washed down into the underground drain piping. Solid residue or blown-in sand can be removed with a shovel from the flat bottom of a TESI track pan. This design feature helps you avoid costly underground drainage piping plug-ups and the overflowing of hazardous tainted rainwater over the sides of the pan. Other company’s designs do not have this positive, NPT connection feature nor do they have flat bottom pans that are easy to clean out with a squeegee or shovel.
Length 10 ft. and 20 ft. sections
Width between the rails approx. 58″ Outboard Pan 36″ each
Weight 10 ft. Center Pan – 350 lbs.
Weight 20 ft. Center Pan – 750 lbs.
Weight 10 ft. Side Pan – 200 lbs.
Weight 20 ft. Side Pan – 400 lbs.
Materials Available: Mild Steel with Chem. Resist. Epoxy, Corten or Stainless Steel, Galvanized Mild Steel
10 ft. models are made of 11 gauge material
20 ft. models are made of 7 gauge material
Continuous end-to-end fiberglass bargrate is available on all models.
Drainage Hubs 3″ NPT Female
Inter-connection: 2″ NPT Nipples
Special Acid Resistant Coatings Are Available