Section 041-21-10 - Personnel for Pressure VesselsA. Regardless of the number of pressure vessels installed at a plant, the owner remains responsible for ensuring that the pressure vessels are maintained and operated in a safe condition.B. Whenever 10 or more pressure vessels are installed at a plant, the following requirements apply:(1) The owner must assign an individual who is responsible for ensuring that the pressure vessels are maintained and operated in a safe condition as required by these rules; and(2) Duties relating to the operation and maintenance of the pressure vessels must be performed under the direct authority of the individual assigned responsibility in accordance with paragraph A.02-041 C.M.R. ch. 21, § 10