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A description of selected projects to demonstrate the breadth and depth of our knowledge and experience with various tools, techniques, procedures and analyses.
 
 
 
Mobil Oil Corporation - Refinery Power Factor Correction
Changes in utility company billing practices and increased plant electrical load caused the refinery to evaluate options to reduce its reactive power demand. Synchronous motors installations were reviewed to determine if over excitation of these motors could be used to provide reactive power. Also, four installed but inactive 13.8kV capacitor banks were examined for re-commissioning. MSB&A coordinated repair, testing and commissioning of these capacitor banks. MSB&A also conducted a protective relay coordination study using SKM Power*Tools Captor Software for both the refinery and utility electrical systems.
  
 
Northrup-Grumman - Stennis Space Center - Critical Computer System Electrical Power Analysis
MSB&A investigated the report of power system disturbances that were causing outages and malfunctions to Cray mainframe computers and Silicone Graphics workstations. Power system design equipment components and grounding methods were studied and a recommendation for remediation was reported. Disturbances were caused by a combination of grounding power system configuration problems.
  
 
Mobil Oil Corporation - Refinery Electrical System Upgrade
Designed and specified modifications to the 13.8kV power transmission and distribution system of the refinery. The electrical system of the refinery had developed into a Loop-Primary Radial Distribution System in which a fault on any transformer primary in the loop would de-energize all units on the loop. MSB&A participated in a multi-phase project to transform critical units of the distribution system to a Primary-Selective Radial Distribution System. Redundant critical loads of the units were divided between the dual secondary buses thus insuring that a single event would not cause a loss of power to the entire unit. The project reduced the susceptibility of the system to outages caused by lightning through the elimination of aerial uninsulated feeders and pole transformers and the substitution of metal jacketed tray cables and pad mounted transformers. The project also included the design and installation of numerous pressurized electrical substation buildings utilizing NEMA 1 interior electrical equipment for medium and low voltage equipment and the elimination of corresponding outdoor equipment. A check was made of the increase in fault current caused by the changes and existing electrical equipment was modified for higher available fault currents as required.