When Safety Instrumented Systems (SIS) were first adopted by the process industries in the mid 1980s, they typically were Triple Modular Redundant (TMR) systems. These systems were significantly more ...

Though the presumption is that physical separation is needed between control and safety systems to avoid common cause failures, “effective” separation may be enough with proper analysis and the right ...

The old NASA slogan "failure is not an option" is appropriate to describe the safety challenges faced by leaders of multinational companies. For an increasingly well-informed public, safety, health ...

Since the inception of OSHA over 30 years ago, great improvements have taken place in workplace safety. Beginning with regulatory compliance, continuing with safety systems and program development, ...

Editor’s Note: September is Safety Month in the North American railway industry. This month, Railway Age “recalls to active duty” the three-part series on System Safety by Sonia Bot and Tony Zenga, ...