How should a facility prepare for a DHA?
Preparation starts with a bounded process inventory, not a generic document dump. Identify the areas, equipment, transfer points, enclosures, dust collectors, rooms, and operating modes that the review is expected to cover. Mark startup, shutdown, cleaning, maintenance, upset, and change conditions separately from normal production. A reviewer should be able to see what is in scope and what remains unresolved.
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Assemble representative material evidence
Build a material evidence package for each relevant particulate. Preserve supplier identity, formulation or grade, process location, particle condition, moisture, sampling details, test method, units, and report date. Do not copy a result from a similar product and treat it as site evidence. Missing information belongs on the open-questions list so testing or another verification step can be scoped deliberately.
Connect history to the current process
Gather layouts, flows, equipment records, dust-collection information, operating and maintenance procedures, prior studies, incident and near-miss records, inspection findings, and management-of-change history. Pair old recommendations with closure evidence instead of marking them complete from memory.
Name decision owners and boundaries
Finally, name the people who can explain the process and make decisions. Agree on site access, review workshops, deliverables, assumptions, exclusions, and how factual corrections will be handled. This checklist organizes evidence; it does not decide the facility’s compliance status or replace the qualified technical judgment required for the actual site.
Keep the evidence chain connected.
Each link moves to one parent resource or an adjacent source-backed question. No material-property pages publish until their data licence gate clears.
Questions this page can answer.
FAQ evidence map
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