HSNO Certification Services 


Wes Smith - EPA registered Test Certifier

PH 0274 937008        wes@castleconsultants.co.nz



Approved Handler Certification for Hazardous Substances including flammable gases, flammable liquids, flammable solids, oxidisers, organic peroxides, human toxics, corrosives and ecotoxic substances : Classes 2, 3, 4, 5, 6, 8 and 9.


Location Test Certification (LTC) for sites exceeding thresholds of Hazardous Substances in Classes 2, 3, 4, or 5.  This includes all storage, use and/or manufacturing and packaging sites.  Includes previous Dangerous Goods sites formerly certified by Councils under the now repealed Dangerous Goods Act.

Certification required for:

flammable gases - eg LPG, CNG, acetylene, hydrogen, aerosols;

flammable liquids - eg petrol, solvents, manufactured flammable goods such as paints and inks, alcohols and a wide range of organic chemicals

flammable solids - eg aluminium powder, light metals, waxes and other solid organics, organometallic compounds,

oxidisers - eg gas compressed and liquid oxygen, nitrous oxide, entonox and  various oxidising liquids and solids eg swimming pool chlorine

organic peroxides - fibreglass hardeners such as methyl ethyl ketone peroxide, benzoyl peroxide 


Stationary Container Certification of tanks and process vessels for flammables, oxidisers, toxics, corrosives and ecotoxics.

Above & below ground tanks, including initial instalation of new tanks and systems, multiple tanks or standalone tanks and process vessels and those connected to dispensers, burners, emergency generators, stationary engines, vaporisers or wharflines.

eg Service stations and private fuel supplies, emergency generators (gensets) for UPS, oil fuelled boilers, chemical industry. 


Wes works mainly in the Taupo - Auckland - Northland areas but is available to travel for specialist work such as new instalations or for clients with nationwide sites.