The $125 million Dominion Bridgeport Fuel Cell project is part of the state of Connecticut’s Project 150, a program designed to increase renewable and clean energy projects in the state by 150 megawatts.
Dominion, through its subsidiary Dominion Bridgeport Fuel Cell LLC, is contracting FuelCell Energy to build, operate, and maintain the plant. FCE’s DFC3000 operates at a very high 47 percent efficiency, according to the company. Please note that gratuitous links to your site are viewed as spam and may result in removed comments. Cooling towers of a nuclear power plant creating clouds in blue sky at Antwerp harbor electricity generation for industrial use atomic energy with low environmental pollution or contamination as long as no radiation escapes it is a clean technology but there will always be some risks and dangers involved CO2 neutral landscape background with copy space panorama.
Hundreds of designers can work concurrently on a project, in a fully controlled manner, with visibility of the entire design at all times.
Designers progressively create a highly intelligent 3D design by selecting and positioning parametric components from an extensive catalogue.
A configurable Status Management function provides visual highlighting and clear reporting of design maturity status of PDMS objects. A standard model library saves design time and effort, by making it easier to reuse designs from existing built-in complex components. PDMS integrates with all other AVEVA Plant™ applications and interface products to form a complete and configurable 3D plant design solution for the power and process industries. P&ID design can now benefit from PDMS functions, such as multi-user working, revision control and global project execution.
Complete and consistent schematic information enables quicker commissioning and easier plant maintenance. An extensive set of catalogues covers industry, national, and international standards, and includes piping, structural steel, ducting, hangers, supports and cable trays. Each catalogue provides parametric definition of all components in the required size ranges, ratings and types. Engineering specifications control the way in which catalogue components may be used in the design. Controlled changes to components and specifications are quick and easy to make and apply across the design. AVEVA PDMS's highly interactive piping design functions allow rapid modelling of all piping systems, based on component catalogues and engineering specifications.
A full range of piping isometrics can be automatically generated, from the complete system, through to fabrication, erection and individual spool isometrics.
AVEVA PDMS manages and integrates all stages of the piping workflow, from initial routing, through basic and detailed design to individual pipe spooling at the fabricator.
Automated Pipe Routing includes automatic selection of items such as gaskets and flanges, allowing a preliminary route and Materials Take Off to be created very quickly. The Quick Pipe Routing function enables interactive pipe routing by using the mouse pointer to specify changes in direction. Sophisticated pipe manufacturability checks help designers ensure that pipes can be fabricated at least cost.
Integrity and clash checking functions highlight errors during modelling, for high quality design.
Sophisticated modification capabilities enable the piping design to be progressively refined.
Piping Assemblies such as vents, drains or control sets can be added to the design as entities.
All drawings have associative dimensions and 'intelligent' annotations, and can be updated automatically with design changes.
Accurate materials information can be generated on each sheet or drawing or on separate reports for any System, Line, Area, and so on.
AVEVA PDMS manages the creation of individual pipe spool isometrics, and of fully intelligent welds in the database, which can be maintained across multiple revision cycles. The Equipment functions build 3D models for all kinds of plant items, from pumps and exchangers through to complex items such as reactor vessels and compressors. 3D CAD models can be imported via translators, including AVEVA Mechanical Equipment Interface™.
Multiple graphical representations are available, and obstruction volumes may be added so that spaces required for maintenance access can be visualised and clash-checked during layout and design. Equipment templates allow complex parameterised design configurations to be defined so that they can be quickly and easily re-used, even across multiple projects.
Equipment items include 'intelligent' connection points, with relevant attributes, for the connection of associated piping, ducting, instrument and electrical systems.
All E&I items, including cabinets, transformers and switchgear, can be located in the 3D plant layout for visualisation, clash checking and production of arrangement drawings. 3D models of electrical equipment and off-line instruments can be created from parameterised templates, or imported as STEP files using AVEVA Mechanical Equipment Interface™. Valves and in-line instruments are selected from catalogues via engineering specifications. The PDMS Cable Tray application selects components from a catalogue via an engineering specification and creates the complete cable tray layout. 3D ducting designers use an engineering specification to select parametric components from an extensive catalogue. A Fill function automatically fills the straight parts of the route with straight lengths of ducting.
AVEVA PDMS includes parametric design of the steel and concrete structures found in process and power plant.


The Beams & Columns application defines a fully connected network of structural sections.
Structural modelling uses parameterised, extendable catalogues for components such as section profiles, joints, and fittings. Fittings can be added to all types of beams, plates, walls, floors and so on, to apply items such as doors, windows, 'intelligent' piping penetrations, stiffeners, lifting lugs and fire-proofing. Intelligent, parametric penetrations can be defined, with details such as kick-plates, and connected to both the structure and the penetrating item (for example, pipe or duct). Profile catalogues cover the leading international and national profile standards, including angles, channels and I-beams.
Sample joint catalogues contain standard types of joints including cleats, endplates and sniped end preparations.
Fittings catalogues contain parameterised structural and industrial fittings, including lifting lugs, stiffeners, windows and doors. Interfacing options are available to link to third-party analysis software and structural detailing systems. A variety of interfaces to third-party design systems are available for functions such as pipe stress analysis. PDMS supports a wide range of data exchange formats, including DXF, DGN, PDF, SDNF and CSV. AVEVA PDMS is designed to support large teams of plant designers working together in a controlled and managed way.
Work breakdown structures can be changed as project needs evolve; for example, when construction contracts are awarded. Change highlighting facilities enable modelling and drawing changes from a previous version, or from a specific date and time in the past, to be highlighted on screen or in drawings. Clash severity can be classified as hard-hard, hard-soft, or soft-soft, when access spaces or insulation volumes interfere. A separate product, AVEVA Clash Manager™, enables effective management actions in resolving clashes.
Data consistency checks of the model are made for correct component alignment and connections. Customer-defined engineering data checks enable design verification to project and company quality standards. Rich, easy to use reporting functions enable sharing across many of the AVEVA Plant modules and products, and generate comprehensive and high-quality, project-ready reports and report templates. All drawings and reports are produced directly from the PDMS database in accordance with user-configurable rules, ensuring consistency between documents and design. All types of reports and schedules [such as valve or nozzle schedules] can be produced, in CSV or other formats.
Accurate Material Take Off information is available across all disciplines, by item, unit, area etc. AVEVA PDMS is supplied with a predefined, extensible data model, enabling rapid deployment on projects. Extensive international character sets enable localisation of the graphical user interface and data, catalogues, drawings and reports in Western, Asian, Middle-Eastern and European languages. An open programming environment enables customers to develop their own applications on top of PDMS.
Definitions and conversion factors are provided for a wide range of units, such as Distance, Bore, Area, Volume, Angle, Weight, Temperature, Density, Pressure, Force, Voltage, Current, Impedance and so on.
A single project database ensures consistency between 3D design, 2D drawings, reports and deliverables. Highly concurrent working combined with high productivity, error-free design and minimum site work enable the most rapid project execution. Late-emerging design changes may be handled quickly and efficiently, protecting the project schedule. Automatic change highlighting and tracking makes it easier to identify, manage and communicate design changes across the project at any time. Welcome to Inhabitat, your online guide to the best green design ideas, innovations and inspiration to build a cleaner, brighter, and better future.
Disconnecting switches are used primarily for isolation of equipment such as buses or other live apparatus.
There are three classes of disconnect switches: (1) Station, (2) Transmission and (3) Distribution.
2) Power System Classes - isolation of a station equipment, load management in transmission and sectionalizing in distribution.
The program brings together private and public funds through the state’s Clean Energy Finance and Investment Authority (CEFIA) to support development of clean energy projects. A company announcement says that fuel cells generate “ultra-clean” power “electrochemically, without combustion.” Fuel cell generation emits dramatically lower levels of pollutants such as nitrogen oxide (NOx), sulfur dioxide (SOx) and particulate matter. Farrell said in a company announcement that Dominion is “adding fuel cell technology to our energy portfolio that already includes wind, hydro, biomass and, soon, solar.” Dominion owns wind farms in West Virginia and Indiana, a biomass power plant in Virginia, and hydroelectric power stations in Virginia and North Carolina. Invaluable when integrating multiple P&IDs from different contractors on a project, this open approach saves man-hours and makes elimination of errors quick, easy and thorough. For piping components, for example, data is stored related to connection types, physical and nominal size, material codes and bolt requirements. From this model, Piping General Arrangement drawings, isometric drawings and bills of quantity are produced. Components can be quickly positioned using feature snapping and intelligent prediction can complete a pipe route automatically.


These include functions to apply specification and bore changes across the line, and to define and modify sloping pipes.
The workflow is fully integrated with 3D piping design, enabling such items to be detailed on piping isometrics, for example.
A wide range of layout and component drawings can be produced, together with accurate weight and materials information. Parameterised joint definitions automatically resize a joint if an associated section is resized. Both share the same catalogues and specifications and may be used together on the same project. Access and change control can be readily configured for customers' work practices and specific project requirements. In Integrated Mode, these can include schematic, engineering, and 3D design data, such as surface area, weight and centre of gravity. This may be extended with user-defined Element types and attribute definitions, for ongoing system enhancement.
Knife Switches An open-type switch consisting of a movable knife blade, a pivot and a mount.
Disconnecting Switches A knife switch connected in series with a circuit breaker used on power circuits. They are used for sectionalizing electric circuits such as buses or lateral circuits or even portions of main feeders for special purposes such as testing and maintenance. Switches are further categorized as gang- or hookstick-operated and loadbreak and non-loadbreak types. Control Switches include all switches that are used to control the operation of other equipment. Special - to include solid-state, limit, pressure, float, flow, proximity and temperature switches for special applications. Auxiliary Switches all switches or contactors that are actuated, or electrically operated, by some other control switch or device. Located in Bridgeport, Conn., the plant will use a clean-tech process to transform natural gas into electricity. Construction is to begin immediately, and the facility is scheduled to go into operation in 2013. Fuel cell technology lends itself to distributed generation, which places power generation close to the point of use, reducing “the need for electric utilities to invest in costly and difficult to site transmission and distribution grids,” according to FCE. The company recently initiated a pilot project to test solar-power generation on rooftops leased from commercial and industrial firms.
PML enables customisation of functions to suit any particular project, industry or workflow, to add custom automation functions, or to create interfaces with in-house or third-party applications.
They are extensively used in lighting and small power circuits, with proper fuses connected in series with the switch blades. The basic insulation level (BIL) of station-class equipment is normally higher than for transmission or distribution equipment. Generally used outdoors for circuits of medium capacity, such as lines supplying an industrial load from a main transmission line or feeder.
They are designed for operating voltages less than 250 volts and very small current capacities, usually mounted on switchboards. The 14.9 megawatt facility will produce enough electricity for about 15,000 homes delivered through a local micro-grid.
Disconnecting switches should never be opened until the circuit breaker in the same circuit has been opened, and should always be closed before the circuit breaker is closed.
Air-break switches are built for about 135,000 volts maximum, but their use is in general confined to lower voltages. The supply line must be on top while the load-side must be at the bottom or the pivot part of the switch. They are not designed to break currents and should, therefore, never be opened while current is flowing in the line. When enclosed, a minimum gutter space must be at least four (4) inches and the wire-bending space at terminals must be six (6) inches minimum. These switches are designed to carry expected load currents and remain closed for momentary current flow such as fault currents. Magnetic-Impulse Switches is a type of switch where the arc is extinguished by blowing it magnetically into arc chutes where it is lengthened, cooled and interrupted. Fault currents in excess of a specific rating may cause the switch to be blown open by the magnetic forces due to the short-circuit current. The magnetic effect is produced by the circuit current which is passed through suitable coils, setting up a strong magnetic field across the space between the switch contacts as they are opened. They should be used on both sides of the circuit breakers, to deaden both side of the breaker for repairs or replacements purposes. Load management is achieved during dead time by switching the proper disconnects automatically through sensing loss of voltage. The basic principle involved in lengthening the arc is that the force is directly proportional to the product of magnetic flux and current. Distribution disconnecting switches provide for both single- and three-phase sectionalizing.



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