La. Admin. Code tit. 55 § V-5030

Current through Register Vol. 50, No. 11, November 20, 2024

Section V-5030 - Pressure Gages

A. Each boiler shall have a pressure gage so located that it is easily readable. The pressure gage shall be installed so that it shall at all times indicate the pressure in the boiler. Each steam boiler shall have the pressure gage connected to the steam space or to the water column or its steam connection a valve or cock may be located near the boiler providing it is locked or sealed in the open position. No other shutoff valves shall be located between the gage and the boiler. The pipe connection shall be of ample size and arranged so that it maybe cleared by blowing out. For a steam boiler the gage or connection shall contain a siphon or equivalent device which will develop and maintain a water seal that will prevent steam from entering the gage tube. Pressure gage connections shall be suitable for the maximum allowable working pressure and temperature but, if the temperature exceeds 406° F, brass or copper pipe or tubing shall not be used. The connections to the boiler, except the siphon if used, shall not be less than 1/4 inch inside the diameter standard pipe size but where steel or wrought iron pipe or tubing is used they shall not be less than 1/2 inch. The minimum size of a siphon, if used, shall be 1/4 inch inside diameter. The dial of the pressure gage shall be graduated to approximately double the pressure at which the safety valve is set, but in no case to less than 1 1/2 times this pressure.

B. Each force-flow steam generator with no fixed steam and water line shall be equipped with pressure gages or other pressure measuring devices located as follows:

1. at the boiler or super heater outlet (following the last section which involves absorption of heat); and

2. at the boiler or economizer inlet (preceding any section which involves absorption of heat); and

3. upstream of any shutoff valve which may be used between any two sections of the heat absorbing surface.

C. Each high-temperature water boiler shall have a temperature gage so located and connected that it shall be easily readable. The temperature gage shall be installed so that it at all times indicates the temperature in degrees Fahrenheit of the water in the boiler, at or near the outlet connection.

La. Admin. Code tit. 55, § V-5030

Promulgated by the Department of Public Safety, Office of the State Fire Marshal, LR 33:1359 (July 2007).

AUTHORITY NOTE: Promulgated in accordance with R.S. 23:531 and R.S. 51:1424.