Louisiana Administrative Code
Title 55 - PUBLIC SAFETY
Part V - Fire Protection
Chapter 50 - Boiler Construction, Maintenance, Inspection and General Use
Subchapter E - General Requirements
Section V-5081 - Air and Ventilation Requirements-Combustion Air Supply and Ventilation of Boiler Room
Current through Register Vol. 50, No. 9, September 20, 2024
A. A permanent source of outside air shall be provided for each boiler room to permit satisfactory combustion of the fuel as well as proper ventilation of the boiler room under normal operating conditions.
B. The total requirements of the burners for all fired pressure vessels in the boiler room must be used to determine the louver sizes whether fired by coal, oil or gas; however, the minimum net free louvered area must not be less than 1 square foot. The following table or formula shall be used to determine the net louvered area in square feet.
|
Input (Btu/Hour) |
Required Air (Cu/Ft/Min) |
Minimum Net Louvered Area (Sq. Ft.) |
|
500,000 |
125 |
1.0 |
|
1,000,000 |
250 |
1.0 |
|
2,000,000 |
500 |
1.6 |
|
3,000,000 |
750 |
2.5 |
|
4,000,000 |
1,000 |
3.3 |
|
5,000,000 |
1,250 |
4.1 |
|
6,000,000 |
1,500 |
5.0 |
|
7,000,000 |
1,750 |
5.8 |
|
8,000,000 |
2,000 |
6.6 |
|
9,000,000 |
2,250 |
7.5 |
|
10,000,000 |
2,500 |
8.3 |
(BTUH) 10,000) X 2.5 = CFM - 300 /dfm per sq. ft. of net required area.
C. When mechanical ventilation is used in lieu of Subsection A above, the supply of combustion and ventilation air to the boiler room and the firing device shall be interlocked with the fan so the firing device will not operate with the fan off. The velocity of the air through the ventilating fan shall not exceed 500 feet per minute and the total air delivered shall be equal to or greater than shown in Subsection B above.
AUTHORITY NOTE: Promulgated in accordance with R.S. 23:531 and R.S. 51:1424.
