INTRODUCTION

The SmartCEMS®-75 Predictive Emission Monitoring System (PEMS) provides continuous data recording and report generation for gas turbine compliance with 40 CFR Part 75 and 40 CFR Part 60 regulations. The data acquisition system provides a secure and reliable means of collecting and retrieving compliance data. This application has been customized to meet the requirements of gas turbines under the applicable regulations including 40 CFR Part 60, Appendix GG; 40CFR Part 75, Appendix D and E for peaking units; and as a predictive emissions monitoring system (PEMS), an alternative to continuous emissions monitoring under Subpart E of 40 CFR Part 75, for base load units.

SYSTEM DESCRIPTION

The SmartCEMS®-75 PEMS was designed to operate on a personal computer with a standard interface to the turbine and a relational database such as the one provided with a third party supplied data acquisition system. The application itself actually consists of two independent databases and three configurable application modules. The first database is secured and contains only data (both raw collected data that is not editable and historical data formatted as specified by the applicable regulations) as well as a compliance message archive with operator comments. The second database contains compliance reporting data including collections statuses, summarized and calculated fields, and formatted EDR components. The first application is the data acquisition module that runs on startup of the system and collects the data continuously providing compliance emissions data for reporting purposes. There are two other independent SmartCEMS®-75 components that work with the data acquisition service. The second application provides the operator interface for display of real-time data, display and acknowledgement of compliance alarms, and input of operator data including gas sampling results and certification test results. The third application provides the reporting and EDR generation capacities. Both of these applications that support the operator and interface with the data and the data acquisition service can be run from any workstation on the local area network.

DATA SECURITY AND REPORTING

The system software utilizes multiple levels of security to protect the data and the application software itself. Although the system is configurable and flexible, the data collected is protected in its raw collected form indefinitely. Report generation is initiated through the operator interface and includes generation of U.S. EPA 40 CFR Part 60 compliance reports, U.S. EPA 40 CFR Part 75 data reports in the latest Electronic Data Reporting (EDR) format, and custom reports configurable by the end user. The system is designed to efficiently collect data and also to make that data available for use in real-time optimization strategies. The system is provided in an open environment readily networked to other process and control machines.