In the pyrolysis plant, three redundant Himax safety systems are used as ESD, BMS and F&G systems in the compressors, naphtha and ethane furnaces and other process units. Overall, the safety controllers process approximately 2,000 signals. (Picture: Hima)
Safety System Modernisation

Migration with a Vision: How to Update a Whole Refinery in Only Two Weeks

Refinery modernizes safety systems in just two weeks and assures plant availability for the future—In September 2014, the German refinery Heide Refinery used two weeks of planned downtime at its pyrolysis plant to migrate to new safety systems. The technology selection emphasized plant availability and a high level of investment security, while extensive preliminary testing guaranteed a smooth changeover.

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Anti-Tamper Valve Head Options – Standard Design: The valves are operated using a special AT-Key which perfectly matches the reciprocating Anti-Tamper bore. In addition to this security feature, it is also possible to insert a padlock crosswise through the Anti-Tamper bore in order to prevent the insertion of the key. (Picture: Armaturenfabrik Franz Schneider)
Anti-Tamper Valve Heads

Manipulation Impossible

Valves play an important role when it comes to process safety: Unauthorized access or accidental operation can quickly lead to catastrophic results. However, both these scenarios are easily prevented - with tamper–proof valve heads.

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