Any purge method should be repeated as often as required to be certain a flammable mixture cannot be formed upon introducing hydrogen or air to the system. 任何净化方法都应该尽量多重复几次，直到确定在把氢或空气引入系统时不会形成可燃混合物为止。
Adequate ventilation will help reduce the possible formation of flammable mixtures in the event of a hydrogen leak and will also eliminate the potential hazard of asphyxiation. 充分通风有助于在氢泄漏的情况下减少可燃混合物形成的机会，同时还排除了潜在的窒息的危险。
