He whakatakoto ā-wāhanga ai ngā wāhi roa HCL mō te hīmomo i te kākano waipiro, he mea nui tōna korotuwhera. Kua hanga ngā wāhi roa i runga i ngā rerekētanga e taea ana te whakarite ki ngā taupunga o te kākano waipiro, pērā i te paunuhere 316 rānei ko te whakapai i runga i ngā fluoropolymers. Ko te haumanu he mea nui rawa, me ngā whakauru e hia nei: he whare rua kīwariwari hei whakamutu i ngā wehe, ngā pūtau whakamutunga ā-mokemoke mō ngā urupō, me ngā raraunga matihiko wehe tūpato. He whakahaere pai hoki i te tuhinga hau mō te tango i ngā hau kākano HCL, me te whakatū i ngā tūtohitanga ahi-kore, nā te mahi tūpono o te kākano. Me whakaaetia e ngā wāhanga ture moemoeā mō te hīmomo i ngā mea huarere, kia tae atu ai te haumanu i te kākano waipiro ki ngā whenua pūtaiao, pūoro tangata, me te whakawhiti wai.