- Postgraduate course on Safety Management (HVK), Copla Harderwijk, diploma 2011
- Postgraduate course on Business Administration, Academische Opleidingen Groningen, diploma 1999
- Psychology of Organisation and Labour (M.Sc. level), Rijksuniversiteit Groningen, diploma 1989
- HAZOP, SSC Apeldoorn, certificate 2011
- TopSet Incident Investigation, certificate 2010
- Gas measurement (NOGEPA), IVM Coevorden, certificate 2010
- VOL VCA, diploma 2000 and 2010
- Emergency response coordination, certificate 2000