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Title: Real-time expert system monitors complex air regs

The South Coast Air Quality Management District (SCAQMD) in southern California monitors NO{sub x} emissions in real time from a total of 60 boilers at the area`s five electric utilities. SCAQMD accomplishes this with an application developed using G2, an expert system from Gensym Corp., Cambridge, Mass., interfaced to monitoring equipment at each remote facility. In 1991, the SCAQMD board passed Rule 1135 requiring monitoring of nitrogen oxide (NO{sub x}) emissions from electric-power generating systems. The rule requires utilities to transmit boiler emissions data in near real-time to SCAQMD. Each utility had to install a continuous emission monitoring system (CEMS) to measure emissions from each boiler and a remote terminal unit (RTU) to telecommunicate emissions data to SCAQMD. The CEMS acquires data from sensing devices for each boiler. The RTU collects the data, performs calculations, and transmits formatted information to the Central Station Compliance Advisory Expert System at SCAQMD. This information includes NO{sub x} emissions, power generation, fuel usage, stack gas flow and equipment status.
Authors:
Publication Date:
OSTI Identifier:
99395
Resource Type:
Journal Article
Resource Relation:
Journal Name: Pollution Engineering; Journal Volume: 27; Journal Issue: 7; Other Information: PBD: Jul 1995
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CALIFORNIA; AIR QUALITY; ELECTRIC UTILITIES; AIR POLLUTION CONTROL; NITROGEN OXIDES; AIR POLLUTION MONITORING; AIR POLLUTION MONITORS; REAL TIME SYSTEMS; POLLUTION REGULATIONS; EXPERT SYSTEMS