Safety probe launched after water leak activates gas alarm on Apache North Sea platform HSE investigating incident last week on Forties Charlie facility 19 April 2021 15:32 GMT Updated 19 April 2021 15:32 GMT in London An investigation has been launched by the UK offshore safety regulator after a leak of produced water activated gas detectors on Apache North Sea’s Forties Charlie platform. The incident occurred on 13 April. Apache said produced water came into contact with a fixed gas detector on the platform, which triggered an alarm on the fire and gas console.