W. Va. Code R. § 36-23-24

Current through Register Vol. XLI, No. 24, June 14, 2024

Section 36-23-24 - Temporary Heating Devices

24.1.

(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 3, may be installed in accor­dance with their approval.

(2) Temporary heating devices, which are listed for installation with lesser clearances than specified in Table 3, may be installed in accordance with their approval.

(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 one (1) inch concrete, or equivalent. The insulating material shall extend beyond the heater two (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 ten (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) 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.

24.2. Definitions applicable to this sub­part.

(a) "Approved" for the purpose of this subpart, means equipment that has been listed or approved by a nationally recognized testing laboratory such as Factory Mutual Engineer­ing Corporation, or Underwriters Laborato­ries

Incorporated, or federal agencies such as Bureau of Mines, or United States Coast Guard, which issues approvals for such equip­ment.

(b) "Closed Container" means a con­tainer so sealed by means of a lid or other device that neither liquid nor vapor will escape from it at ordinary temperatures.

(c) "Combustible Liquids" means any liquid having a flash point at or above one hundred forty degrees (140 degrees) F. (sixty (60) degrees C.), and below two hundred (200) degrees F. (ninety three point four (93.4) degrees C.).

(d) "Combustion" means any chemical process that involves oxidation sufficient to produce light or heat.

(e) "Fire Resistance" means so resis­tant to fire that, for specified time and under conditions of a standard heat intensity, it will not fall structurally and will not permit the side away from the fire to become hotter than a specified temperature. For purposes of this part, fire resistance shall be determined by the standard Methods of Fire Tests of Building Construction and Materials, NFPA 251-1969.

(f) "Flammable" means capable of being easily ignited, burning intensely, or having a rapid rate of flame spread.

(g) "Flammable Liquids" means any liquid having a flash point below one hundred forty (140) degrees F. and having a vapor pressure not exceeding forty (40) pounds per square inch (absolute) at one hundred (100) degrees F.

(h) "Flash Point" of the liquid means the temperature at which it gives off vapor sufficient to form an ignitable mixture with the air near the surface of the liquid or within the vessel used as determined by appropriate test procedure and apparatus as specified below.

(1) The flash point of liquids having a viscosity less than forty-five (45) Saybolt Universal Second at one hundred (100) degrees F. (thirty seven point eight (37.8) degrees C.) and a flash point below one hun­dred seventy-five (175) degrees F. (seventy nine point four (79.4) degrees C.) shall be determined in accordance with the standard method of Test for Flash Point by the Tage Closed Tester, ASTM D-56-69.

(2) The flash point of liquids having a viscosity of forty-five Saybolt Uni­versal Second(s) or more than one hundred seventy-five (175) degrees F. (seventy nine point four (79.4) degrees C.) or higher shall be determined in accordance with the standard method of test for Flash Point by the Pensky Martens Closed Tester, ASTM D-93-69.

(i) "Portable tank" means a closed container having a liquid capacity more than sixty (60) United States gallons, and not in­tended for fixed installation.

(j) "Safety Can" means an approved metal container, of not more than five (5) gallons capacity, having a flash-arresting screen, spring-closing lid and spout cover and so designed that it will safely relieve internal pressure when subjected to fire exposure.

(k) "Vapor Pressure" means the pres­sure, measured in pounds per square inch (absolute), exerted by a volatile liquid, as determined by the standard method of test for Vapor Pressure of Petroleum Products (Reid Method). (ASTM D-323-58.)

W. Va. Code R. § 36-23-24