Trinity Integrated Systems' iDefine Suite Reduces Errors and Streamlines Design of Safety Instrumented Systems by Paul Studebaker 'We're not all on four or five floors in one building, all talking to each other.' Chevron's Joe Pittman on one of the many reasons driving the company's use of Trinity Integrated Systems' iDefine Software Suite to manage its increasingly complex SIS projects. These days, safety systems engineers need all the help they can get. Major capital projects (MCPs) have grown by an order of magnitude, and so have their systems. 'A project that was $500 million used to be a large project. Now it's tens of billions,' said Joe Pittman, safety instrumented systems team lead, Chevron ETC, in his presentation today at the 2014 Yokogawa Users Conference and Exhibition in Houston. 2008 honda metropolitan service manual. Safety systems are becoming much larger and more complex, and their design often must be distributed over multiple contractors and companies. 'We're not all on four or five floors in one building, all talking to each other,' Pittman said. And competency is a scarce commodity. Traffic Engineering Manual. (January 15, 2016). 6), Two-Direction Large Arrow (W1-7), Chevron Alignment (W1-8), and Stop Ahead (W3-1) signs. Sep 1, 2000 -.1.1 Chevron Pavement Markings in Gore Areas.1.2 Crosshatch. Override good engineering judgment; nor are the recommended standards. 'When the market is down, we lay off. When it comes up, we hire, but the result is a lot of people don't have the experience. It's worse overseas, in areas like China and Africa.' Pressure is rising on speed of execution. 'Companies are selling the product of these big, expensive new plants as of the day they're scheduled to start up,' Pittman said. 'But we still have delays in design and engineering; then we compress the schedule. This puts a lot of pressure on the contractors, especially the automation contractors.' It's an ongoing battle to create and maintain accurate and consistent documentation, and then there are the regulatory requirements. 'Regulators are more and more in our business to see that we meet industry standards,' Pittman said. 'Ten years ago, that wasn't happening.' To implement a safety instrumented system (SIS ) successfully, it's critical to reduce human errors when capturing design requirements, and to get those requirements correctly into the hardware design and the application code that controls the safety controllers. Pittman has found that Chevron can streamline SIS design by using Trinity Integrated Systems' iDefine Software Suite. But first, his disclaimer: 'I don't work for Trinity, I just find the tools effective and easy to use,' he said. 'The iDefine suite is a vendor-neutral requirements capture and configuration tool designed to reduce error by allowing engineers to work in a more natural interface.' The suite uses state machines for sequential logic, and cause-and-effects for shutdown logic. This allows the engineer to concentrate more on functionality and less on translating the source documentation into function blocks and ladder logic. The tested application can be used to generate vendor-specific SIS code, and the suite includes tools that provide management of functional safety, document generation and code simulation testing capabilities. One of today Toyota avensis touch operation manual. 's large projects might involve 30 or 40 coders. 'The suite provides the consistency you want to expect in a system,' Pittman said. Its templates conform to Chevron standards and 'save configuration and test time, allowing code generation to be done later in the project lifecycle,' Pittman said. 'This is a great advantage if you need to be able to squeeze the contractor.'
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