Iyunithi ye-BOP accumulator (eyaziwa nangokuthi iyunithi yokuvala ye-BOP) ingenye yezingxenye ezibaluleke kakhulu zokuvimbela ukuqhuma.Ama-accumulators afakwa ezinhlelweni zama-hydraulic ngenhloso yokugcina amandla azokhishwa futhi adluliselwe kulo lonke uhlelo lapho edingeka ukufeza imisebenzi ethile.Amayunithi we-BOP accumulator nawo ahlinzeka ngosekelo lwe-hydraulic lapho ukuguquka kwengcindezi kwenzeka.Lokhu kuguquguquka kwenzeka kaningi kumaphampu amahle asusayo ngenxa yemisebenzi yawo yokusebenza yokucupha nokukhipha uketshezi.