Product from terminal is carried to the Retail Outlet through tankers. Before a tanker is decanted into the tank, sample is drawn from each of the compartments and tested for its compliance with IS 1460 as well as Lab report of the terminal.
Currently the sample is drawn by crack opening the tanker outlet valve of the compartment, holding a funnel at the valve and collecting product in a beaker. Chances of contamination increase as the funnel may not be completely clean, there is product spillage while collecting the sample.
Tristar Tanker Sampler is a device which is connected to the tanker outlet valve and on opening the tanker outlet valve desired amount of sample is collected in the sampler. The same can be taken into the sample bottle / beaker. The tanker outlet valve can be closed and sampler removed from the tanker valve. This process ensures there is no spillage, wastage and exposure of the product to contaminating agents
A study conducted by an oil marketing company found that the biggest contaminant of fuel is the tanker truck used to carry fuel from terminal to RO (Petrol Pumps). The tanker along with fuel also carries with it water, rust particles and other contaminants. These are transferred to the underground storage tanks where they accumulate and eventually come into the system.
By decanting filtered and water free products into the storage tank, life of the product along with the storage tank is improved. As water accumulation is curtailed microbial growth and rust formation is greatly reduced.
Tristar Decantation filter is to be connected to the tanker on the suction side and Underground tank on the outlet side. During decantation if the water level increases beyond set point, stop the decantation and release the water through the drain valve and continue the decantation process.
Tristar Moisture Trap helps prevent atmospheric moisture entering the tank. As the product is being dispensed fresh air through the air vent enters the tank to make up for the space previously occupied by the product. This atmospheric air contains moisture which converts into water on condensation in the tank. Tristar moisture trap absorbs the moisture and lets dry air pass through it during breathing of the tank. Since air entering the tank is dry, water from condensation is eliminated, thus improving product quality, especially in MS tanks.
Air-vapour mixture in the tank vapour space is expelled when the tank is being filled & atmospheric air is sucked in through the tank vent when the product is being withdrawn. This air coming from the external atmosphere is humid. The Moisture Trap on the tank vent forces this air through a bed of hydrated silica that absorbs the moisture & lets only dry air to pass into the tank. Thus, the air in the vapour space is always maintained in a dry state and water contamination due to condensation of moisture in the tank is prevented and the overall quality of the product maintained.
The hydrated silica provided is indicating type & changes from its normal blue colour to pink on getting saturated with water & can be viewed easily through the transparent acrylic container. Spent hydrated silica can be replaced in situ with fresh hydrated silica.
Time to saturation of a hydrated silica bed depends on local atmospheric conditions of humidity & temperature. At maximum humidity & high summer temperatures, the hydrated silica bed will get saturated when 40kl of product gets pumped. At lesser humidity & temperature, it will last much longer. However, use of indicating type hydrated silica obviates any need for calculations for the life of hydrated silica. Mere observation of colour change indicates the time for replacement of the charge.
Tank cleaning in India unfortunately is still being done manually. This practice continues because of availability of cheap uninformed labour and insensitivity of people responsible for the tanks primarily driven by compulsion to spend next to nothing when it comes to maintaining RO assets. In both the public and private sector as long as their employees are concerned, they cannot enter confined spaces hence all high-risk jobs are done through outsourced contractors.
We at Tristar have developed cleaning systems where not only tanks can be cleaned without man entry into confined space but also all the existing fuel is filtered and polished where muck, sediments, free water are separated and fuel filtered upto 5 micron.
The primary concern for Oil marketing companies is to ensure quality fuel is being provided to the consumer. The fuel may pick up impurities and water as it passes through the terminal tank, Tanker and finally stored in an underground tank being dispensed to consumers.
Tristar FSU ensures that the best quality fuel is dispensed to the customer from the available fuel in the underground tank. Tristar FSU sucks the top most product which is generally free of sediments , impurities and water. Since impurities in the form of sediments and water have higher density they would settle at the bottom of the tank or would float at a level below the lower density product. FSU units use this phenomenon and float near the top of the liquid surface and draw from this near-surface, contamination-free liquid.