Revalidation of PHAs
What is PHA Revalidation?
Revalidating your PHA’s ensures that:
  • The initial PHA’s are consistent with current practice
  • No process hazards are identified
  • Adequate controls are in place to manage hazards
  • Completeness of the initial PHA
  • Consistency with risk rankings
  • Compliance with applicable regulations
Why should I revalidate my PHA’s?
Paragraph (e) of 29 CFR 1910.119, OSHA’s Process Safety Management regulation requires that PHA’s be updated and revalidated every 5 years. In order to comply with the regulation, you must either revalidate your initial PHA or conduct a new PHA on the same process.

Determining the Scope of the PHA Revalidation Study

1. Verify the quality and resolution of the previous study.
2. Verify the existence and thoroughness of your MOC system and all changes carried out since the initial PHA study.
3. Consider the applicability of RMP regulations – evaluation of off-site impacts.
4. Review the changes in facility standards and protocols relating the PHSA.
5. Conduct PHA revalidation study.
Facilitate your Revalidation Study
Dyadem's Engineering Services Division offers a proven track record of helping our clients achieve success in risk mitigation and is committed to providing industry professionals with constructive solutions to meet their risk assessment and risk management objectives. Dyadem can provide the resources that you need to complement your existing project/review team. We will review the project and its goals at the beginning of the project to ensure that it provides the information, analysis and solutions that meet your needs.

Dyadem facilitates your PHA Revalidation study in a three-step manner. We will first review the respective process safety information along with the scope and objectives of the project. This is followed by a series of onsite meetings where the facilitator guides the team to identify the hazards associated and assists them in analyzing these scenarios further. Post meeting, the facilitator provides a report that includes all the findings and recommendations of this study.