Truchek® Hydrostatic Monitoring System 10-hour test procedure (with tank not in use) Truchek meets the strict NFPA 329 criteria and is capable of detecting liquid loss in the tank: • At a rate of 0.05 US gallons per hour • With a 99% probability of detection (PD) • With a 1% probability of false alarm (PFA) How Truchek works • The interstice is factory-filled with a brine solution. • This creates a small hydrostatic pressure on both tank walls. • The brine solution level is monitored within a reservoir on top of the tank. • Any change in level – either up or down – is monitored and alarmed. Tank-tightness testing Truchek provides two simple test options based on industry-accepted test criteria • Verified by UL as meeting EPA and NFPA 329 criteria • Verified by the National Work Group on Leak Detection Evaluations (NWGLDE) as compliant with acceptable test protocols Calibrated Dipstick or Ruler Monitoring Fluid in Standpipe (during test only) For detailed Truchek testing instructions, refer to Truchek® Testing Instructions and Data Log. 4-Hour test procedure (with product dispensing) Truchek exceeds EPA’s tank-tightness test criteria and is capable of detecting liquid loss in the tank: • At a rate of 0.05 US gallons per hour • With a 95% probability of detection (PD) • With a 5% probability of false alarm (PFA Reservoir Level Up Leak in Outer Wall Reservoir Level Down Reservoir Level Down PRIMARY-TANK LEAK IN WET HOLE OR DRY HOLE SECONDARY-TANK LEAK IN DRY HOLE SECONDARY-TANK LEAK IN WET HOLE For over 40 years, Xerxes has designed and manufactured fiberglass underground storage tanks for fuel, water and wastewater. Xerxes’ most recent expansion is its HydroChainTM product line. These highly engineered products with site-specific designs provide a complete stormwater management solution . Xerxes is a key brand of Mattr, a global materials technology company serving critical infrastructure markets. FTRU0824 | [email protected] | xerxes.com © 2024 Mattr Corp. All rights reserved.
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