Waihi Emergency Principal Control Plan Approved by: General Manager/SSE Approval Date: 26/03/2021 Next Review:26/03/2022 OceanaGold Waihi WAI-250-PLN-001 Page 73 of 124 Class 5 Emulsion Spill Plan Control • Shut off all valves • Insert caps into taps after use • Repair or replace leaking hoses • Attempt to seal containers to prevent further spillages. • Follow the SDS for class 5 explosive emulsion • Bund areas should be kept empty and clear of rubbish. Clean up To prevent the likelihood of an accidental ignition from happening, all waste explosive materials must be destroyed as soon as possible. Gasser and Emulsion should be kept from mixing together. • Flush the emulsion to the sump/dilute (small amount of spill) • Contain explosives waste in labelled buckets (more than half pod of ANE spill or leakage) • Store waste buckets in secure magazines • Transfer to location where it may be disposed of in manageable quantities by blasting Scenario Response EP spill Surface: Shut off valves and seal containers, build a bund around the spillage and contain waste ANE into buckets Underground: Shut off valves and seal containers and flush ANE to sump, seal containers to prevent further spillages EP spill on Truck/Charmec and catches fire Surface: Follow fire emergency plan 1.3 Fire – Surface Appendix O Trigger Action Response Plans – T.A.R.P Shut off valves and seal containers, ANE is not combustible, however, if combustible material is involved in a fire, use large quantities of water. Underground: Water dropper has been installed in the u/g magazine, use large quantities water to spray, dry agent is unsuitable. Follow fire emergency plan 1.5 Fire-Underground Appendix O Trigger Action Response Plans – T.A.R.P
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