SGC provided electrical engineering services for the design of two landfill gas-fueled power plants in Delaware. Both projects included the installation of multiple engineer-generator sets with all supporting equipment to generate power by combusting landfill gas from adjacent landfill sites. As part of this project, the power output from these facilities was interconnected to the local utility.
Working in conjunction with Industry and Energy Associates (IEA), SGC performed the engineering design and delivered engineering notes and sketches that were transcribed for consistency by IEA in electronic computer aided drafting and design (CADD) format. Upon completion of the CADD engineering plans, SGC reviewed and assisted in the preparation of final construction drawings.
The engineering deliverables included subsurface design drawings, power and lighting plans, grounding drawings, one-line and three-line diagrams, wiring and interconnection diagrams, low and medium voltage elementary diagrams, cable and raceway schedules, panel schedules, and a motor list. A technical review of material and equipment specifications was also completed.
SGC provided electrical engineering and CADD services for production of fabrication drawing for a skid-based evaporative distiller to be installed at a petrochemical facility in Yemen. All of the skid-mounted instruments, controls and motors required interfacing with a remote Distributed Control System (DCS) provided by the owner. This interface was accomplished by means of two junction boxes - one for control signals and one for instrumentation signals.
This project required all electrical components to be rated for use in a Class I Division 2 environment per owner-supplied specifications. SGC specified and designed all electrical equipment in compliance with the hazardous location requirements. Additionally, all 120V motors required local motor starters which were powered via a skid-based 120V distribution system including a 460V/120V transformer, a circuit breaker distribution block, and 120V local motor starters including a Hands-Off-Auto selector switch and indicating lights.
Our engineering deliverables included an electrical bill of materials, motor and load list, control and instrument interface junction box wiring and layout diagrams, and electrical cable installation details.
The Bath Iron Works (BIW) Land Level Transfer Facility is a 300 million dollar construction project associated with a 16-acre concrete deck. Built in the Kennebec River the facility allows the Shipyard to build three Aegis Destroyers concurrently on a level surface as opposed to the traditional inclined ways.
In October 1998, the Shipyard began construction of this facility. The size and complex nature of the project and its location provided several challenges with respect to survey data to support the construction of the facility. SGC Engineering, LLC provided continuous survey engineering services over the three-year duration of the project. Initially, our objective was to establish a Geodetic Control Network that would endure during the life of the construction. During construction, SGC was responsible for setting up a real-time kinematic GPS system to provide precision survey control for simultaneous pile-driving operations by as many as four barges located in the Kennebec River. In total, over 4,000 piles were driven and controlled by real-time GPS. SGC also performed all construction layout services including the critical rail systems within relative accuracies of +/-0.01’ horizontally and vertically.
SGC supported this project with an onsite survey manager and as many as five fully equipped field crews working two shifts. Armed with accurate survey controls, the construction of this state-of-the-art facility was completed on time.
SGC Engineering was presented with the unique opportunity of providing professional services to Seabait Maine LLC, a subsidiary of a UK-based company, in its effort to expand production to the United States. As a pioneer of sustainable mass culture of high-quality marine (sandworms) seaworms, Seabait required survey, master planning, building and civil design services to construct a facility in the Bangor area. Seabait is the first commercial worm farm of its type in this country.
Following SGC’s completion of a boundary and topographic survey, building and site design, alternatives were reviewed with Seabait to meet current needs as well as provide an opportunity to expand the facility as the company continues to grow. The major challenge with the design of the facility was the steep topography of the site, maintaining existing historic structures as well as minimizing ledge removal. The layout of Seabait’s grow-out operation requires a large, well insulated warehouse-type building with extensive internal plumbing. Balancing cut and fill quantities while minimizing predicted ledge removal proved challenging in locating the 53,000 ft² facility on the site.
SGC ultimately provided Seabait the civil/site design for the new facility as well as the detail design of the structural foundations for the prefabricated warehouse the company had selected in advance.