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  9. Six Steps to Effectively Update and Revalidate PHAs

    CEP Article | AIChE | The Global Home of Chemical Engineers
    2001 January Kevin  Smith David K. Whittle Process hazard analyses must be revamped — or redone from scratch — every five years by law. Following the guidance given here will facilitate this effort. ...

  10. Properly Purge and Inert Storage Vessels

    CEP Article | AIChE | The Global Home of Chemical Engineers
    2001 February George R. Kinsley Jr. Inert gases are used to prevent fires and explosions in the vapor spaces of equipment. Correct selection of oxygen concentration and inert gas flow rate are critical to ensuring safety. ...

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