Leveraging Your Process Data Historian for Environmental Management Systems

摘要

The rate of change in environmental regulations has never been greater. In addition to the rate of change (and increasing complexity), the amount of continuous and periodic monitoring requirements is also on the rise. As a result, monitoring daily environmental compliance in a large petrochemical facility is an on-going challenge. The process data historian can provide an invaluable source of emissions data for routine emissions calculations, recordkeeping, and reporting. However, modifying data in the process data historian and documenting the justification for the changes is often impractical. Calculating upset emissions using the process data historian can be challenging as the data may become invalid during upset events as monitoring equipment experiences failures or out of range conditions. This paper demonstrates how the process data historian, when supplemented with readily available commercial technologies, can be utilized to provide near real time monitoring of compliance limits. Using traditional web based software technology with direct links to the process data historian combines the best features of both systems and provides a low cost alternative to complex commercial environmental compliance systems or labor intensive desktop tools. This approach can be used to satisfy emissions calculations, reporting and recordkeeping requirements to include Continuous Emissions Monitoring Systems (CEMS), Maintenance Startup and Shutdown (MSS), Green House Gases (GHG), Annual Emission Inventory (AED and Upset Emissions.