Tracer verification and monitoring of containment systems (II)
- Sandia National Labs., Albuquerque, NM (United States)
- Science & Engineering Associates, Inc., Santa Fe, NM (United States)
A tracer verification and monitoring system, SEAtrace{trademark}, has been designed and field tested which uses gas tracers to evaluate, verify, and monitor the integrity of subsurface barriers. This is accomplished using an automatic, rugged, autonomous monitoring system combined with an inverse optimization code. A gaseous tracer is injected inside the barrier and an array of wells outside the barrier are monitored. When the tracer gas is detected, a global optimization code is used to calculate the leak parameters, including leak size, location, and when the leak began. The multipoint monitoring system operates in real-time, can be used to measure both the tracer gas and soil vapor contaminants, and is capable of unattended operation for long periods of time (months). The global optimization code searches multi-dimensional {open_quotes}space{close_quotes} to find the best fit for all of the input parameters. These parameters include tracer gas concentration histories from multiple monitoring points, medium properties, barrier location, and the source concentration. SEAtrace{trademark} does not attempt to model all of the nuances associated with multi-phase, multi-component flow, but rather, the inverse code uses a simplistic forward model which can provide results which are reasonably accurate. The system has calculated leak locations to within 0.5 meters and leak radii to within 0.12 meters.
- Research Organization:
- US Department of Energy (USDOE), Washington DC (United States)
- DOE Contract Number:
- AC21-96MC33125
- OSTI ID:
- 576716
- Report Number(s):
- CONF-970208-Proc.; ON: DE98001967; TRN: 98:005248
- Resource Relation:
- Conference: International containment technology conference and exhibition, St. Petersburg, FL (United States), 9-12 Feb 1997; Other Information: PBD: [1997]; Related Information: Is Part Of International Containment Technology Conference: Proceedings; PB: 1140 p.
- Country of Publication:
- United States
- Language:
- English
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