Regulatory compliance is driving industry to provide more complete information concerning its manufacturing processes and systems partially because many process industries either use hazardous feedstock or produce hazardous materials. To ensure safe operation of these facilities, OSHA Process Safety Management (PSM) rules (29 CFR 1910.
KEY WORDS Networks and communication Ethernet Internet and intranet PC-based control Device-level networksThe price of freedom? A little less freedom. More users are seeking to gain Ethernet's interoperability and flexibility. However, the relatively greater openness of Ethernet can mean increased network vulnerability, especially when networks are linked via the Internet.