Part 14 Construction, Installation, Inspection and Maintenance of High Pressure Boilers; Construction of Unfired Pressure Vessels

(a) Figure P-42 illustrates a typical form of flange for use on boiler shells for passing through piping such as feed, surface blowoff connections, etc., and which permits of the pipes being screwed in solid from both sides in addition to the reinforcing of the opening in the she…

(a) The feedwater piping for all boilers, except for high temperature water boilers complying with the requirements of subdivision (h) of this section, and for forced flow steam generators with no fixed steam and water line complying with the requirements of subdivision (i) of th…

(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…

Each boiler fitted with a water-jacketed boiler-furnace mouth protector, or similar appliance, having valves on the pipes connecting them to the boiler, shall have these valves locked or sealed open. Such valves, when used, shall be of the straightway type.

(a) The minimum size of pipes connecting the water column to a boiler shall be one inch. For pressures of 400 pounds or over, lower water column connections to drums shall be provided with shields, sleeves, or other suitable means to reduce the effect of temperature differentials…

In all cases where the returns are fed back to a boiler by gravity, there shall be a check valve and stop valve on the return line, the stop valve shall be placed between the boiler and the check valve and both shall be as close to the boiler as practicable.

(a) A horizontal-return tubular boiler over 72 inches in diameter shall be supported from steel hangers by the outside-suspension type of setting, independent of the boiler side walls. The hangers shall be so designed that the load is properly distributed between the rivets attac…

(1) The minimum size of an access door to be placed in a boiler setting shall be 12 by 16 inches, or equivalent area, 11 inches to be the least dimension in any case. The minimum size of firedoor opening in an internally fired boiler in which the minimum furnace dimension is 24 i…

(a) Each boiler shall have at least one safety valve and if it has more than 500 square feet of bare tube water heating surface, or if an electric boiler has a power input more than 1,100 kw, it shall have two or more safety valves or safety relief valves. For a boiler with combi…

(a) After a boiler has been completed, it shall be subjected to a hydrostatic test of one and one-half times the maximum allowable working pressure. The pressure shall be under proper control so that in no case shall the required test pressure be exceeded by more than six percent…

(a) When the boiler is completed, there shall remain visible on shell plates, furnace sheets, and heads, one group of the plate manufacturer's stamps consisting of the manufacturer's name, manufacturer's test identification number, class, and tensile strength; except that heads c…

The inspection required by this Part shall be performed by an inspector employed by New York State or any other State or municipality of the United States, a Canadian province, or an inspector regularly employed by an insurance company authorized to write boiler insurance. These …

(a) The manufacturer of any complete boiler unit to be stamped with the American Society of Mechanical Engineers symbol has the responsibility of assuring through proper ASME Code certification that all work performed by it or others responsible to it complies with all requiremen…

The location of the American Society of Mechanical Engineers stamps shall be as follows and same shall not be covered by insulating or other material: (a) On horizontal-return tubular boilers—on the front head, above the central rows of tubes. (b) On horizontal flue boilers—on th…

(a) No boiler shall hereafter be installed in this State unless it has been constructed in accordance with the requirements of the American Society of Mechanical Engineers and the National Board of Boiler and Pressure Vessel Inspectors and is so stamped and registered. (b) A hydr…

For a forced-flow steam generator with no fixed steam and waterline, equipped with automatic controls and protective interlocks responsive to steam pressure, safety valves may be provided in accordance with section 14-9.9 of this Subpart or the following protection against over-p…

(a) One or more safety valves or safety relief valves on the boiler proper shall be set at or below the maximum allowable working pressure. If additional valves are used the highest pressure setting shall not exceed the maximum allowable working pressure by more than three percen…

The testing of frequencies of safety and safety relief valves will vary from plant to plant due to operating conditions. However, under normal conditions, the following schedule is required and a log must be kept of these tests: (1) Power boilers where the maximum allowable worki…

Each safety valve or safety relief valve shall be plainly marked by the manufacturer in such a way that the markings will not be obliterated in service. The markings may be stamped on the casing, or stamped or cast on a plate or plates securely fastened to the casing, and shall c…

(a) The minimum safety valve or safety relief valve relieving capacity for other than electric boilers, waste heat boilers, organic fluid vaporizer generators, and forced-flow steam generators with no fixed steam and waterline, when provided in accordance with section 14-9.5(c) o…