[Code of Federal Regulations]
[Title 29, Volume 8]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 29CFR1926.154]

[Page 208]
 
                             TITLE 29--LABOR
 
CHAPTER XVII--OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT 
                                OF LABOR
 
PART 1926_SAFETY AND HEALTH REGULATIONS FOR CONSTRUCTION--Table of Contents
 
                Subpart F_Fire Protection and Prevention
 
Sec. 1926.154  Temporary heating devices.

    (a) Ventilation. (1) Fresh air shall be supplied in sufficient 
quantities to maintain the health and safety of workmen. Where natural 
means of fresh air supply is inadequate, mechanical ventilation shall be 
provided.
    (2) When heaters are used in confined spaces, special care shall be 
taken to provide sufficient ventilation in order to ensure proper 
combustion, maintain the health and safety of workmen, and limit 
temperature rise in the area.
    (b) Clearance and mounting. (1) Temporary heating devices shall be 
installed to provide clearance to combustible material not less than the 
amount shown in Table F-4.
    (2) Temporary heating devices, which are listed for installation 
with lesser clearances than specified in Table F-4, may be installed in 
accordance with their approval.

                                Table F-4
------------------------------------------------------------------------
                                            Minimum clearance, (inches)
                                          ------------------------------
            Heating appliances                                  Chimney
                                             Sides     Rear    connector
------------------------------------------------------------------------
Room heater, circulating type............        12        12         18
Room heater, radiant type................        36        36         18
------------------------------------------------------------------------

    (3) Heaters not suitable for use on wood floors shall not be set 
directly upon them or other combustible materials. When such heaters are 
used, they shall rest on suitable heat insulating material or at least 
1-inch concrete, or equivalent. The insulating material shall extend 
beyond the heater 2 feet or more in all directions.
    (4) Heaters used in the vicinity of combustible tarpaulins, canvas, 
or similar coverings shall be located at least 10 feet from the 
coverings. The coverings shall be securely fastened to prevent ignition 
or upsetting of the heater due to wind action on the covering or other 
material.
    (c) Stability. Heaters, when in use, shall be set horizontally 
level, unless otherwise permitted by the manufacturer's markings.
    (d) Solid fuel salamanders. Solid fuel salamanders are prohibited in 
buildings and on scaffolds.
    (e) Oil-fired heaters. (1) Flammable liquid-fired heaters shall be 
equipped with a primary safety control to stop the flow of fuel in the 
event of flame failure. Barometric or gravity oil feed shall not be 
considered a primary safety control.
    (2) Heaters designed for barometric or gravity oil feed shall be 
used only with the integral tanks.
    (3) [Reserved]
    (4) Heaters specifically designed and approved for use with separate 
supply tanks may be directly connected for gravity feed, or an automatic 
pump, from a supply tank.