Or. Admin. R. 837-012-0855
(5) When a barge is manned during the firing of the display, a safety shelter must be present on the barge. The safety shelter must:
(6) Separation between mortars and a safety shelter must be 2ft/in. (0.6 m/25 mm) of diameter of any mortars up to 6 in. (152 mm) in diameter. For shells larger than 6 in. (152 mm) in diameter, the minimum separation distance must be 4 ft/in. (1.22 m/25 mm) of shell diameter.
EXCEPTION: If the safety shelter is constructed of stronger material, the separation distance between mortars and the shelter may be permitted to be reduced at the discretion of the local fire authority and the Department of the State Fire Marshal.
(7) The required minimum size for a barge (in square feet) for a particular display must be determined by the following calculations;
(a) Minimum discharge site (in square ft) = sum of (total number of each size mortar times its inside diameter) divided by two (2).
EXCEPTIONS: Multi-shot devices up to 3 in. in diameter must be calculated at twice the actual footprint of each such device (length X width). Ground display pieces may be excluded from the calculations for minimum display set-up area.
(b) Total # of 3 in. Mortar x 3 + total number of 4 in. Mortars x 4 + total number of 5 in. Mortars x 5 + etc. )/2
EXAMPLE: A display containing 100 - 3 in. shells, 50 - 4 in. shells, 20 - 5 in. shells, 10- 6 in. shells, and 5- 8 in. shells would require the following minimum display set-up area. Table not included. See ED. NOTE.
(8) Barges must be configured, and the display arranged, so operators, assistants and any other individuals on the barge can readily exit the barge in case of an emergency.
[ED. NOTE: Tables referenced are available from the agency.]
ORS 476.030 & 480.150
ORS 480.110 - 480.165
OSFM 84-2023, minor correction filed 07/03/2023, effective 07/03/2023
OSFM 2-2015, f. 12-22-15, cert. ef. 1-1-16
OSFM 4-2002(Temp), f. & cert. ef. 2-25-02 thru 8-19-02; OSFM 7-2002, f. & cert. f. 6-20-02; OSFM 6-2006, f. & cert. ef. 3-10-06; OSFM 3-2014, f. & cert. ef. 7-1-14