Inactive
Service-Disabled Veteran-Owned Small Business (SDVOSB) Set-Aside (FAR 19.14)
Notice ID:36C25521Q0328
STATEMENT OF WORK Seeking a System that is used to continuously monitor the water quality of a potable cold or hot water in a building or facility. The Analyzer continuously measures water pressure, d...
STATEMENT OF WORK Seeking a System that is used to continuously monitor the water quality of a potable cold or hot water in a building or facility. The Analyzer continuously measures water pressure, dissolved solids in the water by conductivity, temperature, and pH of the water. Oxidant residuals with respect to both free chlorine (F-Cl2) and total chlorine (T-Cl2) is measured continually using the EPA accepted DPD (N,N-diethyl-p-phenylenediamine) colorimetric test method at an adjustable frequency of every 2-min to 10-min. The oxidant residual measurement complies with US EPA regulation 40 CFR140.74, Standard Method 4500-CLG, and US EPA Method 334.0 “Determination of Residual Chlorine in Drinking Water Using an Online Analyzer”. Water flow (on/off) through the System is also continuously monitored and by association will detect no flow conditions in the water stream. Optionally, the system can accept a 4-20mA input from an external flow meter if continuous flow rate data is desired. The System continuously transfers measurement data to a web-based server via Mobile Link for real time monitoring of the system status, monitoring data, set points, and alarms. The measurement and historical data is easily accessible for trending and reporting 24/7 and 365 days a year via a web-based browser application. 1.1.1 Potable Cold Water The System can be used to monitor the water quality of a potable cold water stream (i.e. incoming water main, storage tank, riser or branch, or distal outlet). The System is tied into the water line in a sidestream manner using an appropriate backflow prevention device (or check valve). A particle filter is used to prevent any suspended solids from entering the Analyzer. The water flow through the Analyzer is conditioned using a pressure regulator up-stream of the Analyzer. Typically all water that flows through the Analyzer is sent to the drain. Optionally the Analyzer can be configured to return the non-DPD treated water flow back to the main cold water line with the appropriate check valves or back flow prevention device. 1.1.2 Potable Hot Water The System can be used to monitor the water quality of a potable hot water stream provided water temperature is below 110 °F (i.e. hot water storage, supply, return, riser or branch, or distal outlet). If the hot water temperature exceeds 110 °F, then a water sample cooler should be added to cool the hot water prior to entering the Analyzer. The Analyzer is tied into the hot water line in a side-stream manner using an appropriate backflow prevention device. A particle filter is used to prevent any suspended solids from entering the Analyzer. The water flow through the Analyzer is conditioned using a pressure regulator upstream of the Analyzer. Typically all water that flows through the Analyzer is sent to the drain. Optionally the Analyzer can be configured to return the non-DPD treated water flow back to the main cold water line with the appropriate check valves or back flow prevention device. 1.2 General Specification 1.2.1 System Analyzer Furnish a fully-automatic Analyzer to continuously monitor water pressure, conductivity, temperature, pH and oxidant residual (both F-Cl2 and T-Cl2) in the potable water supply system. As part of the Analyzer, a particle filter, pressure regulator, tubing and connectors shall be provided to connect the Analyzer to the water line. As part of the Analyzer, both F-Cl2 and T-Cl2 levels in the water shall be measured in a closed colorimetric reading cell using a proven DPD colorimetric technique. The frequency at which these measurements are performed shall be adjustable to a maximum of every 2 min. and to a minimum of every 10 min. The Analyzer shall be equipped with a solenoid valve which activates the proper sampling of the water at the frequency chosen. The Analyzer shall have three automatically controlled pump heads with tubing to add the appropriate amount and sequencing of 2 DPD reagents and a buffer reagent into the reading cell for colorimetric detection. The Analyzer shall automatically flush and rinse the colorimetric reading cell and all DPD-treated water will be sent to the drain. Included is the initial supply of the three reagents: Free Chlorine Indicator (DPD #1), Free Chlorine Buffer and Total Chlorine Indicator (DPD #3). Not included is the required backflow prevention device(s), tap, valves and equipment needed to make the tie in of the System with the water supply to be monitored. Not included is a water flow meter to continuously measure the water flow in the domestic water supply. Mobile Link As part of the System, a cellular communication package, Mobile Link, shall be included which is a small external communication box with antenna that continuously relays the measurement data from the various internal data modules in the Analyzer to a web-based application server. The Antenna shall be extended with a cable for areas with no/low cellular service within the building (e.g. basements of buildings). Web-Based Browser Application As part of the System, a web-based browser application is used to access the real time measurement data, data trending, and historical alarms. Reporting capabilities shall be given to key individuals who are owners of the Water Safety Management Plan. Real time measurement data, data trending, and historical alarms shall be viewed on a secure website via a computer or mobile smartphone using login credentials. Historical data shall be available for export from the web-based browser application into Excel format for further analyses, reporting and/or documentation. As part of the System, SMS notifications shall be configured and issued for system alerts to key individuals and system users.
