Once we had manufactured our pumps prototypes, PUMP ONE 300/50 (≈20m3/h) and PUMP ONE 750/80 (≈40m3/h), and after an intense testing in our facilities with water and light oils, we decided to face a new step in our pump development: Running an independent testing with different qualities of hydrocarbons and getting real performance curves.
PUMP ONE 300/50 PUMP ONE 750/80
For this purpose we commissioned testings to the US National Oil Spill Response Research & Renewable Energy Test Facility, worldwide known as Ohmsett. The facility, located an hour south of New York City, in Leonardo, New Jersey, is managed by the U.S. Department of Interior’s Bureau of Safety and Environmental Enforcement (BSEE).
Ohmsett is a technical reference in the Oil Spill Response market and its facilities are probably the best and the most complete in the world. It is the largest outdoor saltwater wave/tow tank facility in North America and is the only facility where full-scale oil spill response equipment testing, research, and training can be conducted in a marine environment with oil under controlled environmental conditions (waves and oil types).
Our main goal was to get the performance curves for both pumps, but taking into account that they were prototypes and not commercial products we also focused on searching for improvement points to be implemented in the industrialized pumps.
Testing of the PUMP ONE pumps was performed in the Ohmsett oil storage tank farm. The test setup was comprised of a 5000 gallon capacity horizontal tank as the “source tank”; the tank in which both pumps operated and three “receiving tanks”; the tanks in which the test oils where transferred to. Three refined oils available and in stock were used during testing; Hydrocal 300, Calsol 8240 and Sundex 790.
The targeted incremental pressure adjustments starting with the open valve position were; open, 1.5bar, 2.5, 3.5, 5.0, 6.5, 8.0, and 10.0 bar (>12.0 bar for PUMP ONE 750/80 pumping Hydrocal 300). The tests continued until the pump was operated at each incremental pressure for the duration corresponding to the transfer of approximately 300 gallons of test oil. At test end, the gate valve was gradually opened to the open position and the pump powered down and data files ended.
The control stand operator initiated hydraulic power to the pump and adjusted the flow to the target rate. The operator used a temporary adjustable stop at the joy stick allowing for fine adjustment and relatively steady positioning. The hydraulic flow rate required continual monitoring and adjustment due to the changing pump discharge conditions, so hydraulic flow rate and motor speed were not perfectly constant and round numbers as commercial data sheets need. Small hydraulic flow rate differences were detected in the collected data that have been corrected mathematically by Sedosr in order to graph the performance curves for a certain and steady speed.
Seven testings were performed during the week we stayed in New Jersey, 4 for PUMP ONE 750/80 and 3 for PUMP ONE 300/50. Tests 1 and 3 to 7 were run using the pump suction grid in order to make testing results more real. The presence of a suction grid can punish performance and specially pump flow rate, but our pump performance was encouraging.
Definitely, the experience in Ohmsett was highly satisfactory. SEDOSR pumps worked as expected and only a few improvement points regarding tolerances and adjustment were found and already implemented in our final product. So we’re really happy with the result of these three years of hard work.
We want to warmly thank Ohmsett technicians for their willingness to cooperate and to get the best and the most extensive results from testings. Every difficulty and issues found during the first days of testings were overcome working hand in hand with Ohmsett personnel.
At the moment, we’re running endurance testings in our facilities that will complete those already run at the beginning of 2018 with PUMP ONE 300/50, the first prototype we made, and those run at Ohmsett.
*Actual performance data is retained at the Ohmsett Facility and is available for review upon request to the Bureau of Safety and Environmental Enforcement (BSEE) Technical Representative firstname.lastname@example.org or the Ohmsett Facility Manager email@example.com.