Section Saf-C 5027.03 - Construction(a) Dense pack firing racks shall be constructed of metal construction and shall be engineered to withstand a ground detonation of the largest shell being fired from the rack system and shall be designed to minimize damage to adjacent mortar tubes.(b) Mortar tubes shall be constructed of SDR21 high density polyethylene pipe (HDPE) or greater, or other similar material.(c) Mortar tubes shall be securely anchored in place, or securely locked into the rack system in 2 separate locations. Locks shall be designed with a positive locking arrangement to prevent the mortar tube from becoming accidentally dislodged during the firing operations.(d) All mortar tubes contained in the rack system shall be grouped into like sizes.(e) Size groups within the rack system shall be clearly identified and separated from other size groups.(f) All mortar tubes within the rack system shall be of an equal length.(g) Each dense pack firing rack or system shall be permanently marked with a unique serial number located on 2 exterior sides of the firing rack or system that are clearly visible. The serial number shall identify the company name, year of manufacture, and the shell size with a sequential identification number.(h) Dense pack firing racks used in conjunction with a trailer, marine vessel, or floating platform shall be securely affixed to the frame work of the trailer, marine vessel, or floating platform.(i) The deck of the trailer, marine vessel, or floating platform shall be constructed with a non-combustible material which is strong enough to withstand the repeated discharge of display fireworks on its surface.(j) All trailers used in conjunction with dense pack firing racks shall be consistently maintained in a road worthy condition.(k) All marine vessels or floating platforms used in conjunction with dense pack firing racks shall be consistently maintained in seaworthy condition.(l) Dense pack firing racks utilized for ground based firing shall be placed on level, firm ground.(m) All dense pack firing racks system construction shall be approved pursuant to Saf-C 5027.02.N.H. Admin. Code § Saf-C 5027.03
Amended by Volume XXXVII Number 15, Filed April 13, 2017, Proposed by #12124, Effective 3/6/2018, Expires 3/6/2027.