Mirza et al. have stated in the paper "Analysis of hydrogen incidents to support risk assessment", published in the International Journal of Hydrogen Energy 36 (2011), that HIRD (Hydrogen Incident Reporting Database), is one of the main hydrogen incident databases, with over 194 incident. The former link to the database was h2incidents.org, which now refers to h2tools.org.
Where can I find the HIRD database?
In addition, is the next to HIRD and HIAD (Hydrogen Incident and Accident Database) another hydrogen incident related database?
I used the Internet Archive's Wayback Machine:
to confirm that h2incidents.org, which now refers to h2tools.org, appear to have the same information.
You might want to confirm this with the Admins on the h2tools site.
Yes, h2incidents.org was moved to https://h2tools.org/lessons a few years ago. If you enter the URL for h2incidents.org you will be redirected to the new site.
And that answers one of H.A.J.'s questions.