Administrative Rules of Montana
Department 4 - AGRICULTURE
Chapter 4.12 - AGRICULTURAL SCIENCES DIVISION
Subchapter 4.12.7 - Anhydrous Ammonia Rules
Rule 4.12.704 - REQUIREMENTS OF CONSTRUCTION AND ORIGINAL TEST OF CONTAINERS, OTHER THAN REFRIGERATED STORAGE TANKS
Current through Register Vol. 18, September 20, 2024
(1) Containers used with systems covered in ARM 4.12.719 shall be constructed, installed, and tested as follows:
(2) Containers exceeding 36 inches in diameter or 250 gallon capacity shall be constructed to comply with one or more of the following requirements in addition to ARM 4.12.704(1):
(3) Non-Code welding shall be made only on saddles or brackets originally welded to the container by the manufacturer. Non-Code welding directly to the container or any part subject to pressure is not authorized.
(4) All containers, except refrigerated storage tanks, with a design pressure of less than 15 psig shall be inspected by a person having a current certificate of competency from the National Board of Boiler and Pressure Vessel Inspectors.
(5) The provisions of ARM 4.12.704(1) shall not be construed as prohibiting the continued use or re-installation of containers constructed and maintained prior to the effective date of these rules.
Sec. 80-10-503, MCA; IMP, Sec. 80-10-503, MCA;