- (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 roadworthy 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.
Source. #9765-A, eff 8-2-10; ss by #12124, eff 3-6-17