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TECHNICAL SPECIFICATIONS Sewer Pump Station Wet Well Atmosphere Monitoring System

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TECHNICAL SPECIFICATIONS Sewer Pump Station Wet Well Atmosphere Monitoring System TECHNICAL SPECIFICATIONS Sewer Pump Station Wet Well Atmosphere Monitoring System The Town of Groton is seeking to purchase Ten (10) Sewer Pump Station Wet Well Atmosphere Monitoring Systems with Oxygen, Hydrogen Sulfide and Methane Detectors to be installed at different Sewage Pumping Station Wet Wells in the Wastewater Collection System. 1.0 Equipment The Atmosphere Detector System shall be RKI Instruments Beacon 410 Gas Monitor and associated RKI detector heads or equal. This procurement is for the gas monitor and detection heads only. It does not include installation, conduit, electrical fittings or any other associated items needed for installation. All equipment shall meet the following requirements: 1.1 Gas Monitor/Control Panel A. General Specifications: All equipment shall be rated and capable of being mounted inside a sewer wet well space or on an exterior surface. The typical wet well contains high humidity and explosive and corrosive gases. i. Housing: Meets NEMA 4X. ii. Environmental Conditions: 1. Indoor or Outdoor locations (Type 4X) 2. -4F to 122F maximum ambient temperature 3. Maximum relative humidity: 80% iii. Input Power: 100/115/120V ~+/-10%, 50/60Hz, 1.0/1.0/0.5A B. Gas monitor will be a fixed-mounted, continuous-monitoring controller. System shall be a multiple channel monitor capable of sampling gas at 4 locations. C. Monitor system will have visible and audible alarms that activate when detector setpoints are exceeded. D. Monitor shall be capable of exporting data to an external recording device. E. Monitor shall be capable of being checked via remote systems such as SCADA or Mission. F. Monitor Panel shall provide visual readings of current levels of monitored gases. Panel shall provide visible indication of normal operation and trouble. G. The monitor shall be provided with an Operator’s Manual that discusses procedures for Installation, Startup, Maintenance, Calibration, Troubleshooting, Parts Replacement and contain a parts list/diagram.. 1.2 Detector Heads A. General Detector Heads shall be rated as explosion proof for Class I, Groups B, C, D. C. Documentation Each detector head shall be provided with an Operator’s Manual that discusses procedures for Installation, Startup, Maintenance, Calibration, Troubleshooting, Parts Replacement and contains a parts list/diagram. D. Oxygen Detector i. Detection Range: 0% to 25% ii. Accuracy: +/- 0.5% O2 iii. Response Time: 90% in 30 seconds E. Hydrogen Sulfide Detector i. Detection Range: 0 to 100 ppm ii. Accuracy: Greater of +/-5% of reading or +/- 2ppm H2S iii. Response Time: 90% in 30 seconds F. Methane Detector i. Detection Range: 0% to 100% LEL ii. Accuracy: Greater of +/-5% of reading or +/- 2% of full scale iii. Response Time: 90% in 30 seconds iv. Alarm Setpoints: 10% LEL / 20% LEL / 50% LEL 2.0 Submittals The following submittals shall be provided by the bidder: One (1) Operation and Maintenance manual for the gas monitor and each detector head shall be provided for review and approval prior to shipping of equipment. Operator’s Manual should contain procedures for Installation, Startup, Maintenance, Calibration, Troubleshooting, Parts Replacement and contain a parts list/diagram. 3.0 Warranty All equipment shall be guaranteed against defects in material and workmanship for a period of two (2) years from purchase or one (1) year from the date of start-up, whichever occurs first. Any defective equipment or workmanship shall be repaired or replaced without delay by the Manufacturer without cost or obligation to the Town of Groton during the guarantee period. 4.0 Delivery Price shall include all delivery and handling charges. All components shall be delivered within 6 weeks after issuance of the purchase order, to the Town of Groton Water Pollution Control Facility, 170 Gary Court, Groton, CT 06340, Monday through Friday 8:00 A.M. to 3:00 P.M. excluding holidays. For additional information please contact Chris Lund at 860-441-6736. .
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