SUPERVISORY CONTROL AND DATA ACQUISITION SOFTWARE:
The Supervisory Control and Data Acquisition (SCADA) software for this project shall be provided completely configured per the descriptions in the Operations Description section of this specification.
The software shall be standardly available "off the shelf" and shall be licensed in the name of the owner.
The software shall include as a minimum the following items: Runtime System, Remote access package and Report generator.
The system shall also come complete with an integral alarm and event management and automatic alarm dialer. The system shall be capable of alarming all events and alarms monitored by the SCADA software package. The system shall have an “ on call “ scheduler feature and time of day sensitivity feature. The software shall be as manufactured by Spectre, Inc model WIN-911.
The software shall be provided with the specified desktop computer complete and functional. All functionality shall be demonstrated at the time of the systems Factory Acceptance Test.
Additional training for the customer shall be provided by the software manufacture at a reduced cost through the system supplier. This training is applicable if the Owner desires to make configuration changes to the software on his own. Training on the use of the system shall be included as specified in this specification.
THE SCADA SOFTWARE SHALL BE AS MANUFACTURED BY INTELLUTION, INC. OF NORWOOD, MASSACHUSETTS, MODEL FIX DYNAMICS. The package shall accommodate a minimum of 3600 points of data.
SUPERVISORY CONTROL AND DATA ACQUISITION DESKTOP COMPUTER:
The system shall be provided with a desktop computer as specified herein. The system shall be completely factory tested with all external devices, communications and software described operating fully configured. This shall be as per the Factory Acceptance Test requirements specified elsewhere in this specification.
The system shall be comprised of a CPU, monitor, wide carriage dot matrix event and alarm printer, laser jet report printer and a data/fax modem. All equipment to be provided on this project must be demonstrated as per the requirements of the Factory Acceptance Test as specified elsewhere in this document.
The system shall be comprised of the following:
1.Dell CPU - 600MHZ INTEL® PENTIUMTM Processor or latest and fastest desktop INTEL processor.
2.Dell or equal 19" SVGA color monitor.
3.56 Kbaud fax/data modem
4.Sound card.
5.Epson 24 pin dot matrix wide carriage printer.
6.Hewlett Packard laserjet/ color injet printer.
7.Memory as required.
The computer system shall be provided complete and configured for use. The equipment bought for and provided for this system shall be the system used for the Factory Acceptance Test and Training in factory.
OPERATION DESCRIPTION - WATER TREATMENT PLANT - SUPERVISORY CONTROL AND DATA ACQUISITION SITE:
Function:
This site shall be the central monitoring and control site for the system. The system shall employ a personal computer operating a Supervisory Control and Data Acquisition software package. The system shall log data, generate reports, allow operators to set operating setpoints, allow for remote Hand-Off-Auto operation of pump motors and also log and print all alarms and events. There shall also be at this site a "PanelView" touch screen operator interface display which shall display the same information as the computer and allow the operator to adjust the critical operating setpoints. The "PanelView" system shall act as a back-up to the computer and shall be completely independent from the computer. The computer in this system shall not provide the control algorithms. The control shall be done in the PLC's and shall not be dependent on the computer. The computer can be off line and not affect any operation. The PLC shall act on setpoints entered via the computer and via the "PanelView" touchscreen.
SCADA SCREENS:
The following screen descriptions provide a minimum guideline of required features. The particular screen details and functions shall be determined by the system supplier meeting with the engineer and owner. All graphics and screen layouts shall be approved by the owner and/or the owner's engineer prior to system delivery. This may be done at the time of the Factory Acceptance Test or at a time judged reasonable by the owner and the owner's engineer.
1.Main Screen:
The main screen, or overview screen, shall provide a system status overview of all the sites. The detail screens, described later, shall be accessed through this screen by using the "mouse" pointing device to "point & click" on the graphic symbol for that site. As a minimum, the overview screen shall show the level of water in all tanks in graphical and numeric format, show pump status of all pumps or pump stations, valve status of all monitored valves, and indicate alarms.
2.Tank Site Detail Screens :
The detail screen for the Tank sites shall show the level of the tank in a graphical format which represents the type of tank at this site. The level shall also be shown in a numeric format in tenths of feet of water (e.g. 123.4 ft.). The screen shall also show all alarms that are active for this site including high tank level alarm, low tank level alarm, communications failure, and power failure, altitude valve vault flood and entry alarm where detailed in the site operation description and / or on the plans. Where applicable, there shall be provided on the screen setpoints for the operation of the pumps which operate to fill this tank. Setpoints shall be in tenths of feet of water. The setpoints shall include high level alarm, high level alarm reset, low level alarm, low level alarm reset, lead pump call on, lead pump call off, lag pump call on, and lag pump call off. There shall be an icon which when "pointed and clicked" on, shall open a window displaying a trending chart of the tank level. The trending screen shall be configured in a "strip chart" fashion. The trending information shall be made available for a period of no less than 12 months. The trending information shall be stored on back-up tapes, writable CD ROM, or other mass data storage media for later retrieval.
3.Water Treatment Plant Detail Screen:
This screen shall show the status of the water treatment plant. The screen shall show the status of all pump motors (On-Off-Failed), the level of the clearwell, and all monitored alarms and events. The screen shall have the setpoints for the raw water pump station. The screen shall also allow the operator Hand-Off-Auto control of each pump connected to the system. The pump start and stop times shall be logged and available for review and report printing. Logged stop-start shall show the date, time in 24-hour format, and identify which motor started and stopped. Flow rates shall also be displayed and shown on a historical trending screen. The trending information shall be stored on back-up tapes, writable CD ROM or other mass data storage media for later retrieval. Other parameters that shall be displayed are : Raw Water Turbidity, PH, Alkalinity, Chlorine Residual and associated alarm setpoints, basin levels, headloss on filters, filter turbidities, clearwell levels, High Service Pumps, Backwash pumps, flow rates and totals, flow control of filters and all other items as identified by the operation descriptions and or the plans for this project. The System Integrator shall be responsible for providing a complete and operable system.
5.Raw Water Pump Station Detail Screen:
This screen shall show the status of Raw Water Pump Station. The pump status (On-Off-Failed) shall be displayed. The operator shall be able to control the pumps through a Hand-Off-Auto selector. Pump flow rate and total shall be displayed. The pump start and stop times shall be logged and available for review and report printing. Logged stop-start shall show the date, time in 24-hour format, and identify which motor started and stopped. Other alarms include unauthorized entry alarm and sump flood alarm.
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5.Booster Pump Station Detail Screens:
This screen shall show the status of Pump Station. The pump status (On-Off-Failed) shall be displayed. The operator shall be able to control the pumps through a Hand-Off-Auto selector. Pump flow rate and total shall be displayed. The pump start and stop times shall be logged and available for review and report printing. Logged stop-start shall show the date, time in 24-hour format, and identify which motor started and stopped. Other alarms include unauthorized entry alarm and sump flood alarm. Set point control for the pumps shall be located either on this screen or the tank screen, as directed by the engineer.
Operator Interface graphics review meeting. This meeting shall be held prior to the system being completed. The system supplier shall demonstrate to the Owner and the Engineer the planned graphics for this project prior to development. The Onwer and Engineer shall approve or change the planned graphics. The system supplier is responsible for providing a system to the satisfaction of the owner. The meeting may be held either at the Owners office, the Engineers office or at the suppliers factory. The system supplier shall be responsible for all transportation and related travel costs.
OPERATION DESCRIPTION - WATER TREATMENT PLANT - REMOTE TELEMETRY UNIT (RTU):
FUNCTION:
This site controls the high service operation for Three (3) high service pumps starting across-the-line and one backwash pump. The raw water pumps are operated based upon the operator input calls.
LEAD HIGH SERVICE PUMP CALL:
The site operation shall have logic that shall call for a lead pump based upon the level of water in the remote water storage tank. The lead pump call shall energize when the level of the remote tank site falls to a point equal to or less than the lead pump call setpoint. The lead pump call shall be turned off when the level of the remote storage tank rises to a point equal to or greater than the lead pump call off setpoint. In the event of a low suction alarm condition or a high discharge alarm condition the call for lead pump shall be suspended until the condition clears.
LAG HIGH SERVICE PUMP CALL:
The site operation shall have logic that shall call for a lag pump based upon the level of water in the remote water storage tank. The lag pump call shall energize when the level of the remote tank site falls to a point equal to or less than the lag pump call setpoint. The lag pump call shall be turned off when the level of the remote storage tank rises to a point equal to or greater than the lag pump call off setpoint. In the event of a low suction alarm condition or a high discharge alarm condition the call for lag pump shall be suspended until the condition clears.
LOW CLEARWELL LEVEL ALARM/CUTOUT:
The site operation shall have logic that shall suspend the operation of high service pump calls and activate alarm indicators and outputs in the event the clearwell level falls to a point equal to or less than the low level cutout setpoint. The level must remain equal to or less than the low level alarm setpoint for a period of no less than 60 seconds, after which the low level alarm/cutout will latch on. The low level alarm/cutout will turn off when the clearwell level rises to a point equal to or greater than the low level cutout/alarm restore setpoint and a period of no less than 120 seconds has elapsed.
HIGH DISCHARGE PRESSURE ALARM/CUTOFF:
The site operation shall have logic that shall suspend the operation of high service pump calls and activate alarm indicators and outputs when the discharge pressure of the W.T.P. rises to a point equal to or greater than the high discharge alarm setpoint and a minimum of 120 seconds has elapsed. The high discharge alarm/cutout will turn off when the station discharge pressure falls to a point equal to or less than the high discharge alarm reset setpoint and at least 120 seconds has elapsed.
PUMP FAILURE:
The site operation shall have logic that shall activate alarm indicators and outputs when a pump is called to operate, is in the automatic mode of operation and fails to provide a positive motor engaged indication or if an input from the called pump's motor starter overload indicates a thermal overload trip.
AUTOMATIC TRANSFER OF PUMP CALL UPON FAILURE:
The site operation shall have logic that shall transfer the pump call of a failed pump to the next available pump. This shall override the alternation logic.
ALTERNATION OF PUMPS:
The site operation shall have logic that shall alternate the pump call after each pump cycle. The operator shall be able to manually select the lead pump or automatic.
MAJOR EQUIPMENT AT THIS SITE:
1.Allen-Bradley SLC 5/03 PLC;
2.Motorola UHF FM radio;
3.Kantronics FSK modem;
5.One (1) Foxboro pressure transmitter;
6.Hoffman Enclosure NEMA 1 7.Milltronics Ultrasonic Level Transmitter.
DISPLAY KEYPAD REQUIREMENTS AT THIS SITE:
1.color touchscreen PanelViewTM 100C.
PLC I/O AT THIS SITE:
1.120 VAC inputs...... 32
2.Relay outputs...... 32
3.Analog inputs...... 8
4.Analog outputs...... 4
OPERATION DESCRIPTION - Pressure Reducing Valve REMOTE TELEMETRY UNIT:
This site shall control the operation of Pressure Reducing Valve. The well shall operate based on the locally measured pressure both up and down stream.
This site shall control the Cla-Val solenoid operated control valves. The three 692-01 valves shall be automatically alternated. The operator shall also be able to alternate the duty valve automatically from the WTP SCADA Computer. The Inlet and Discharge pressures shall be monitored by solid state pressure transmitters and input into the PLC for monitoring and control action.
MAJOR EQUIPMENT AT THIS SITE:
1.Allen-Bradley Micrologix;
2.Motorola UHF FM radio;
3.Kantronics FSK modem;
4. IGP-10 Pressure Transmitters - 2
DISPLAY KEYPAD REQUIREMENTS AT THIS SITE:
1.None.
PLC I/O AT THIS SITE:
1.120 VAC inputs...... 12
2.Relay outputs...... 8
3.Analog inputs...... 2
4.Analog outputs...... 1