Between June 2019 and July 2021, there were five diving fatalities that occurred at power-generation facilities as a result of differential pressure (Delta-P). At the request of the OSHA’s Office of Maritime Enforcement, the Association of Diving Contractors International (ADCI) formed a task force consisting of ADCI, OSHA, contractors, the USACE, sonar experts, and facility operators to address the hazards associated with Delta-P.

The purpose of this checklist is to provide best industry practices in a clear and complete format for dive operations at power-generating facilities where Delta-P hazards exist. It is a guide for those responsible for creating Dive Procedures and Job Hazard Analysis (JHA). It consists of three sections:

A checklist for planning and execution when diving in areas with potential for Delta-P.
A list of relevant terminology useful in the discussion of Delta-P.
A list of resources for planning Delta-P diving operations.
 

Copies of the checklist can be obtained at the ADCI website under the Safety & Education link.