NZS 2403:1991
Code of practice for deep geothermal wells
Applies primarily to wells of between 250 m and 3000 m depth with subsurface conditions up to 350oC. Covers drilling, operation, maintenance, repair and abandonment and comprises well design, site preparation, drilling equipment, tools, materials and practices. It includes all subsurface work plus the wellhead up to the top flange of the master valve.
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Related Information
Health And Safety Guidelines For Shallow Geothermal Wells
Ministry: WorkSafe New Zealand
Section: 101.3 Note
Citation context:Wells drilled in conditions more severe than those outlined in 101.3(2) shall comply with the Code of Practice for Deep Geothermal Wells NZS 2403: 1991.
Geothermal Energy Regulations 1961
Ministry: WorkSafe New Zealand
Section: 32
Citation context:Bores proposed to be drilled to depths of 150 metres or more shall be constructed, maintained, operated, suspended, and abandoned in accordance with NZS 2403:1991 "Code of Practice for Deep Geothermal Wells".
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NZS 2403:1991
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