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The purpose of this Regulatory Standard - NR is to establish minimum requirements for the management of the structural integrity of boilers, pressure vessels, their interconnecting pipes and metal storage tanks in aspects related to installation, inspection, operation and maintenance, aiming at the safety and health of workers. NRS AUDIOBOOK NARRATED AND UPDATED - SST 2023: https://bityli.com/s7Zayy #audiobook #sst #safety