Automation of Water Resource Recovery Facilities. Water Environment Federation
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The “general” section (Part I) of the specification consists of the following:
• An outline of the overall work and requirements for equipment and services to be provided;
• Related work or requirements specified elsewhere; for example, supervisory control and data acquisition (SCADA) system components may be furnished from multiple specification sections, including packaged systems. A transmitter may be supplied by one party, mechanically installed by a second, and electrically wired by a third. References to related work help describe the equipment’s final installed condition;
• Submittal requirement from the contractor, including
• Operations and maintenance (O&M) manuals furnished by the contractor, including
• Spare parts; and
• Special tools.
The “products” section (Part II) contains the following required data that must be edited to reflect materials, accuracy, performance, and other project-specific requirements for each specified control system device, network component, hardware, software, control system narrative, and instrument:
• Control system hardware and software;
• Control system narratives;
• Communications equipment;
• Networking components;
• Database configuration requirements;
• Process display requirements;
• Report requirements;
• Historical data collection requirements;
• Instrument type;
• Pipe size (for in-line instruments);
• Minimum and maximum operating data (e.g., flow, pressure, temperature, and pH);
• Environmental requirements (e.g., temperature, humidity, and corrosive or explosive atmosphere);
• Method of connection to physical system (e.g., flange and fitting size);
• Special installation hardware required;
• Tagging requirements;
• Range of measurement;
• Accuracy;
• Precision;
• Enclosure;
• Process or wetted part requirements;
• Electrical voltage requirements;
• Signal output;
• Local or remote indication;
• Diagnostics and testing;
• Application vendor options;
• Maintenance and calibration requirements;
• Input signal required;
• Type of setpoint adjustment (e.g., fixed or adjustable), if applicable;
• Alarm switch with limit settings and the amount of deadband required when switches return to normal;