N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-9.19

Current through Register Vol. 46, No. 53, December 31, 2024

Section 14-9.19 - Pressure and temperature 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. The steam gage shall be connected to a siphon or equivalent device of sufficient capacity to keep the gage tube filled with water and so arranged that the gage cannot be shut off from the boiler except by a cock placed near the gage and provided with a tee or lever handle arranged to be parallel to the pipe in which it is located when the cock is open. For boilers carrying 500 pounds pressure or over, valves may be used in place of cocks. Steam gage connections which are filled with water or steam shall be suitable for the maximum allowable working pressure and steam temperature but if the temperature exceeds 406° Fahrenheit, brass or copper pipe or tubing shall not be used. The connections to the boiler, except the syphon, shall not be less than one-quarter inch standard pipe size but where steel or wrought-iron pipe or tubing is used, they shall be not less than one-half inch inside diameter. That portion of the connection used as a syphon next to the steam gage shall be not less than one-quarter inch inside diameter.

(b) The wall thickness of all pipe connections shall comply at least with the requirements of the ASME Code.

(c) Where the use of a pipe longer than 10 feet becomes necessary, an exception may be made to the rule that the gage must be arranged so that it cannot be shut off except by a cock placed near the gage, and a shutoff valve or cock arranged so that it can be locked or sealed open may be used near the boiler. Such a pipe shall be of ample size and arranged so that it may be cleared by blowing out.

(d) Each forced-flow steam generator with no fixed steam and waterline shall be equipped with pressure gages or other pressure measuring devices located as follows:

(1) at the boiler or superheater outlet (following the last section which involves absorption of heat);

(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.

(e) 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.

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-9.19