N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-9.34

Current through Register Vol. 46, No. 45, November 2, 2024

Section 14-9.34 - Feedwater supply apparatus

(a) Except as provided for in subdivisions (b) and (d) below, boilers having more than 500 square feet of water-heating surface shall have at least two means of feeding water. Except as provided for in subdivisions (c), (d) and (e) of this section, each source of feeding shall be capable of supplying water to the boiler at a pressure of three percent higher than the highest setting of any safety valve on the boiler. For boilers that are fired with solid fuel not in suspension, and for boilers whose setting or heat source can continue to supply sufficient heat to cause damage to the boiler if the feed supply is interrupted, one such means of feeding shall not be susceptible to the same interruption as the other and shall provide sufficient water to prevent damage to the boiler.

(b) Except as provided for in subdivision (a) of this section, a boiler fired by gaseous, liquid or solid fuel in suspension may be equipped with a single means of feeding water provided means are furnished for the shutting off of its heat input prior to the water level reaching the lowest permissible level established by ASME.

(c) For boilers having a water-heating surface of not more than 100 square feet, the feed connection to the boiler shall not be smaller than 1/2 inch pipe size. For boilers having a water heating surface of more than 100 square feet, the feed connection to the boiler shall not be smaller than 3/4 inch pipe size.

(d) High-temperature water boilers shall be provided with means of adding water to the boiler or system while under pressure.

(e) A forced-flow steam generator with no fixed steam and waterline shall be provided with a source of feeding capable of supplying water to the boiler at a pressure not less than the expected maximum sustained pressure at the boiler inlet, as determined by the boiler manufacturer, corresponding to operating at maximum designed steaming capacity with maximum allowable working pressure at the superheater outlet.

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-9.34