US lawMinnesotaRegulationsDEPARTMENT OF LABOR AND INDUSTRYChapter 5225 — CHAPTER 5225, BOILERS AND BOATS5225.4000Minn. R. 5225.4000BLOWOFF TANKSLast amended: 2007Year: 2026Length: 25 wordsOfficial source Blowoff tanks must meet the requirements of the National Board Inspection Code 27, Rules and Recommendations for the Design and Construction of Boiler Blowoff Systems.PreviousMinn. R. 5225.3300NextMinn. R. 5225.4100