George R. Brown Convention Center (Room 360 or at Booth 403) in Houston, Texas
Tuesday, April 12th @ 4:00 p.m.
Assessing Meticulous Verification Effectiveness Utilizing HAZOP and LOPA
John T. Perez, P.E., William Wimberly, CSP
In 2011, the Center for Chemical Process Safety initiated work on Vision 20/20. The goal of Vision 20/20 is to demonstrate what perfect process safety will look like when it is championed by industry; driven by five tenets of culture, standards, competency, management systems, and lessons learned; and enhanced by community passion and four global societal themes. The five tenets serve as a framework of what constitutes high-integrity, effective, and successful process safety management. The four global societal themes represent critical supporting efforts to the overarching five tenets.
One of the four global societal themes is meticulous verification. Meticulous verification provides the perpetual assurance of integrity for an organization’s dynamic process safety management program. Meticulous verification specifically calls for collaboration between companies and third-party entities to ensure comprehensive and ongoing assessment of process safety management’s effectiveness.
Based on the authors’ experiences as HAZOP and LOPA facilitators, meticulous verification serves as the mission critical Vision 20/20 element for long-term sustainability. A HAZOP is a nexus of process safety information and process safety management systems’ effectiveness and serves as a bellwether of an organization’s overall PSM integrity. The integrity of a management system is only as strong as the discipline of its keepers to do the right thing irrespective of the consequences. This discipline is tested over and over again every day in HAZOP, as the HAZOP team is relied upon to verify information for accuracy and applicability regarding a wide range of technical subject matter.
In this paper, the authors provide a detailed map of HAZOP and LOPA meticulous verification tasks and interactions. Specific examples of MV vulnerabilities and safeguards are provided to enhance the effectiveness of PHA teams. These vulnerabilities and safeguards address issues such as operating procedures and operator response, enabling and conditional modifiers, management of change, mechanical integrity and testing of safeguards and IPLs.
Read the full paper here.