Hiki i ka noe wai maikaʻi kiʻekiʻe ke kāohi i ke ahi, kāohi i ke ahi a hoʻopau i ke ahi ma lalo o nā hopena ʻekolu o ka hoʻoluʻu ʻana, ka hanu ʻana a me ka radiation insulation. ʻO ia ka ʻenehana kūpono loa e pani i ka pīpī wai kuʻuna, ka noe wai waena a me ke kaomi haʻahaʻa, ke kinoea, ka aerosol, ka pauka maloʻo, ka huʻa a me nā ʻano kinai ʻē aʻe.