4AT TSE 'Numn• MAKING EVERY DROP COUNT WWSV. Ltp• .1 tcr.uuril Little St. James Service Report: Feb. 22th, 2015 US. Virgin Islands Operations 6501 Red Hook Plaza, Suite 201 St. Thomas, Virgin Islands On February 12 and 13, TSG technical staff traveled to the island to perform a service on the LSJ 90 K RO plant's high pressure positive displacement pump. The high pressure pump is somewhat similar to a car engine in that it contains 5 cylinders, 10 valves and 5 plungers (pistons in a car engine) that allow filtered sea water to enter the pump on the low pressure side at about 40 psi and leave the pump on the high pressure side at 800-900 psi to force the seawater through the membranes and achieve salt separation and desalination. It is composed of two stainless steel sides, a "power end" that transmits the motive power from the electric motor to the crankshaft and a "fluid end" that allows the water to be pressurized via valves and plungers. Unlike air, water is incompressible and a positive displacement pump will raise the water pressure to the high pressures needed for desalination. Because of the corrosive nature of seawater and the high pressures involved, regular service of this equipment is vital. This plant was installed in February 2011 and is now 4 years old. The following tasks were to be accomplished during the service. 1- Drain Oil and Remove Power End backplate, Wipe Out Power End, Remove and Clean Oil Strainer, Refill With New Oil. 2- Remove plungers, packings, Wiper Boxes, Inspect Plungers and Replace as Necessary, Upon Reassembly, Replace Packings, Oil Seals and Reinstall Wiper Boxes 3- Replace Spherical Valve Assemblies 4- Inspect Media Filters to Ascertain Media Level/Condition 5- Start Unit and Inspect Operation, Adjust Oil Pressure As Necessary. Task 1 was completed without incident. Task 2-Upon disassembly of the fluid end to check the plungers, it was discovered that one of the plungers had broken loose from the corr