Rules & Regulations of the State of Tennessee
Title 0800 - Labor and Workforce Development
Subtitle 0800-03 - Boilers, Elevators, Amusement Devices, and other Related Rules
Chapter 0800-03-03 - Boiler Inspections
Section 0800-03-03-.09 - REQUIREMENTS FOR FIRE JACKETED STEAM KETTLES

Universal Citation: TN Comp Rules and Regs 0800-03-03-.09

Current through September 24, 2024

(1) Fired Jacketed Steam Kettles. Fired jacketed steam kettles may be constructed in accordance with ASME Code, Section VIII, provided the following requirements are met:

(a) Welded joints in contact with products of combustion shall be of Type No. 1 of Table UW-12, ASME Code, Section VIII.

(b) When parts subjected to pressure are made of carbon steel material, the minimum thickness shall be one fourth (1/4) inch. The minimum thickness of stainless steel or nonferrous pressure parts shall be as specified in the applicable part of ASME Code, Section VIII, Subsection C.

(c) When in contact with products of combustion, carbon steel material shall be pressure vessel quality and austenitic stainless steel parts shall be either extra-low carbon or stabilized grades.

(d) Structural grade carbon steel shall not be used for any pressure part.

(e) The operating pressure of the jacket shall not exceed 50 psig.

(f) Vessels constructed under this rule shall be inspected by an authorized inspector. Such vessels marked with the UM Symbol are not acceptable.

(g) No steam or water shall be withdrawn from the jacket for use externally to the vessel.

(h) The capacity of the safety valve in pounds of steam per hour shall be at least equal to the BTU rating of the burner divided by one thousand (1000).

(i) The jacket shall be equipped with the following minimum appurtenances and controls.:
1. A pressure gauge;

2. A water gauge glass;

3. A separate connection, fitted with a check valve and stop valve, for adding water to the jacket;

4. An automatic gas valve controlled by pressure or temperature to maintain the steam pressure in the jacket below the safety valve setting;

5. A low water cutoff that will cut off the fuel to the burner if the water in the jacket drops below the lowest permissible water level as established by the manufacturer; and

6. A safety pilot control that will cut off the fuel to both the main burner and the pilot burner in case of pilot flame failure.

Authority: T.C.A. §§ 4-5-202(a)(3), 68-122-101 through 68-122-104, 68-122-106, 68-122-111, 68-122-113, 68-122-116, 68-122-204, and 68-122-205.

Disclaimer: These regulations may not be the most recent version. Tennessee may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.