A Christchurch certification business for sites across New Zealand

HSWNZ inspects and certifies hazardous substance locations and stationary tanks for businesses across New Zealand, from a base in Christchurch. We tell you what passes and what needs fixing, and we remind you before your certificate falls due.

New Brighton and the Port Hills, Christchurch, from the air
New Brighton and the Port Hills, Christchurch. We're based here and certify sites across New Zealand.
Matt Johnson, director of HSWNZ

Matt Johnson

Director

Matt trained as an aerospace engineer at the University of Manchester and began his career at BAE Systems, coordinating production and flight test on the Tornado line before project engineering roles on Typhoon and the Joint Strike Fighter. He went on to run military satellite communications programmes at Airbus Defence and Space, and then led safety-critical signalling upgrades across four London Underground lines and 34 stations for Invensys Rail.

In New Zealand he led Housing New Zealand's repair and rebuild programme for about 6,000 earthquake-damaged homes in Christchurch, and was executive officer at Wakatipu High School, responsible for property, finance, health and safety and compliance. As General Manager Engineering at Antarctica New Zealand, he ran Scott Base's infrastructure and led the Scott Base Redevelopment through its business case.

  • MEng (Hons) Aerospace Engineering, University of Manchester
  • Postgraduate Diploma in Coaching, University of East London
  • Certificate in Project Management, Lancaster University
Kelvin Sparks, compliance certifier at HSWNZ

Kelvin Sparks

Compliance certifier

Kelvin founded the business and is a WorkSafe-authorised compliance certifier (authorisation TST100252). He certifies locations holding flammable gases such as LPG and flammable liquids such as petrol and diesel, and stationary tanks and container systems for flammable liquids up to 120,000 litres each.

Before moving into health and safety, Kelvin served ten years with the New Zealand Police. He has since worked across construction, mining, manufacturing and government agencies, developing health and safety management systems, carrying out site audits and investigating workplace incidents, and has worked as a national assessor for SiteWise. He has completed specialist training in asbestos removal, confined spaces and working at heights.

Kelvin inspects sites and signs off certificates.

  • WorkSafe-authorised compliance certifier, TST100252
  • Diploma in Occupational Health and Safety (Queensland)
  • Level IV Certificate in Training and Assessment
  • Level IV Certificate in Construction
Rosanna Rov, HSWNZ

Rosanna Rov

Auditor

Rosanna holds a Bachelor and Master of Science in chemistry from the University of Auckland. She has worked as a pharmaceutical technician, in health and safety support for the technical services division of a waste management company, and as a researcher in a start-up developing nanomaterials, and has tutored and supervised undergraduate chemistry laboratories.

At HSWNZ she carries out site audits and inspections, and she is training towards her own authorisation as a compliance certifier. Outside work she is a probationary member of New Zealand Response Team 14, supporting Civil Defence during and after emergencies, and spends her spare time tramping, trail running, skiing and mountaineering.

  • BSc and MSc, Chemistry, University of Auckland
  • Health and Safety Level 3 Certificate
Kaspar Hayes, HSWNZ

Kaspar Hayes

Trainee auditor

Kaspar holds a Bachelor of Science in geography and statistics from the University of Canterbury, where he is now studying for a Master of Science in Geography. His research includes a project with Environment Canterbury on surf breaks of national and regional significance, and he works with GIS mapping, field data and statistical analysis in ArcGIS Pro and RStudio.

He has tutored maths and English at NumberWorks n Words since 2023. Outside work he mountain bikes and surfs, and he has represented New Zealand in handball.

  • BSc, Geography and Statistics, University of Canterbury
  • MSc in Geography (in progress), University of Canterbury

Professional memberships

  • Hazardous Substances Professionals New Zealand
  • New Zealand Institute of Safety Management
  • NZ Institute of Hazardous Substances Management
  • Health and Safety Association New Zealand

Kelvin is authorised for LPG, petrol and diesel

WorkSafe compliance certifier authorisation TST100252. You can check it on WorkSafe's register.

  • Locations holding flammable gases such as LPG (class 2.1.1)
  • Locations holding flammable liquids such as petrol and diesel (class 3.1)
  • Above and below ground stationary tanks for class 3.1 liquids, up to 120,000 litres each
  • Process containers, dispensers and installations burning class 3.1 liquids

Certificate due soon, or not sure if you need one?