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 76 of 124 First Aid • Water flush • Oxygen Medical • Kit. • Refer to SOP’s Emergency First Aid & Medical Treatment for Cyanide Poisoning • Call Doctor, Hospital Small Spills • Isolate and protect area • Call for help • Do not approach without wearing appropriate PPE or BA and HCN monitor • Shovel up or flush with water. Place solids in plastic bags or sealed drums. • Monitor and test for contamination. Large spills (on-site and in transit) • Initial downwind evacuation for at least 250m • Initiate Emergency Response Liquid • Do not attempt to dilute any spillage • Do not linger down wind of spill - where possible, prevent the spread of spilt liquor using earth or sand bunds. Note: Always work upwind of the spill. Keep acids away. - Consider the use of ZEOLITE absorbent that is kept at Stores and the Water Treatment Plant or ferrous sulphate refer SOP - Wait near the scene, at a safe distance, until help arrives to co-ordinate clean-up. - Clean up and remove using ZEOLITE / ferrous absorbent and place in sealed containers for disposal. Solid Spill • Consider containment of the area via bunding e.g. if it is raining then the area should be bunded • Sweep up spilled material into a covered container or plastic bag pending transfer • Cover and keep spillage dry • Use ZEOLITE absorbent if necessary eg if material becomes wet • Call current supplier for guidance Fire • Fire involving large containers in transit, tanks or on site – evacuate for 800 m in all directions • Emergency Response Procedure/Rapid Response • Mobilise fire brigade and emergency response team • Monitor area for HCN gas • Wear full face mask or self-contained breathing apparatus • Use fog spray or dry powder • Wear full wet weather protective suit (rubber boots to be worn inside wet weather trousers and PVC gloves to be worn inside of wet weather jacket) • If possible, restrict flow of cyanide • Isolate power in immediate area
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