15-24-810 Hardening and tempering tanks.

   Hardening and tempering tanks shall comply with the requirements of Sections 15-24-760 to 15-24-800 and with the specific requirements of the following provisions:

   (a)   Such tanks shall not be located on or within 20 feet of combustible floors. Such tanks shall not be closer than 20 feet for a furnace or other open-flame heating device, torch or other heat-producing device.

   (b)   Such tanks shall be provided with noncombustible hood and vent, and vented directly to the outside of the building and shall otherwise comply with the requirements of Chapter 13-176 . Such vents and hood shall not be closer than 18 inches to any combustible materials.

   (c)   Each such tank shall be equipped with a high temperature limit switch so arranged to sound a suitable audible alarm when the temperature of the quenching medium reaches 50 degrees below the flashpoint.

   (d)   Such tanks having a capacity of over 500 gallons or having a liquid surface area of 25 square feet or more shall be protected as specified in Section 15-24-790(b) or (c) of this Code.

   (e)   Air under pressure shall not be used to fill or to agitate the quenching medium in the tanks.

(Prior code §  129.1-72)

 

Notes

13-176

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