CHAPTER 2. Gassy and Extrahazardous Tunnels
Chapter 2 added by Stats. 1972, Ch. 1430.
§§ 7965–7985 · 21 sections
- § 7965 Any tunnel or underground mine classified by the division as gassy shall operate under special procedures adopted by the board, as well as rules, regulations,…
- § 7966 In any tunnel classified as gassy by the division, there shall be tests for gas or vapors taken prior to each shift and at least hourly during actual…
- § 7967 Whenever gas levels in excess of 10 percent of the lower explosive limit are encountered initially in a tunnel or underground mine classified as gassy, the…
- § 7968 In any gassy tunnel or underground mine, the division may order work halted until adequate testing can be completed to determine the level of hazard from gases…
- § 7969 In any gassy tunnel or underground mine the division shall review plans for electrical lighting and power for equipment. When it is necessary for safety, the…
- § 7970 In any tunnel or underground mine classified gassy, smoking shall be prohibited and the employer shall be responsible for collecting all personal sources of…
- § 7971 Whenever there is any ignition of gas or vapor in a tunnel or underground mine, all work shall cease, employees shall be removed, and reentry except for rescue…
- § 7972 If the level of gas in any tunnel or underground mine reaches 20 percent of its lower explosive limit at any time all men shall be removed, the division…
- § 7973 In any tunnel or underground mine classified as gassy, all employees shall be informed of any special orders made by the division following an inspection. Such…
- § 7974 In any tunnel classified as gassy by the division, ventilation shall include continuous exhausting of fumes and air, unless an alternative ventilation plan…
- § 7975 A “kill” button capable of cutting off all electrical equipment shall be maintained in any gassy tunnel or underground mine. The safety representative or his…
- § 7976 In any tunnel or underground mine classified as gassy, the division shall determine the number of fire extinguishers necessary and their locations.
- § 7977 Any tunnel or underground mine classified as extrahazardous by the division shall comply with the provisions for gassy tunnels in this chapter, as well as…
- § 7978 In any extrahazardous tunnel or underground mine smoking by employees or open flame shall be prohibited. Welding or cutting with arc or flame underground in…
- § 7979 In tunnels or underground mines classified extrahazardous, sufficient air shall be supplied to maintain an atmosphere of all of the following conditions: (a)…
- § 7980 All electrical equipment and machines, including diesel engines, used in tunnels or underground mines classified extrahazardous shall be permissible equipment.…
- § 7981 An escape chamber or alternate escape route shall be maintained within 5,000 feet of the tunnel face or areas being used to excavate material in an underground…
- § 7982 Records of air flow and air sample tests to assure compliance with required standards shall be maintained by the employer at the site of any tunnel or…
- § 7983 The main fan line used for ventilation in any tunnel or underground mine classified extrahazardous shall contain a cutoff switch capable of halting all…
- § 7984 In any tunnel or underground mine classified extrahazardous a device or devices which automatically and continuously test the atmosphere for gases or vapors…
- § 7985 All such testing device or devices shall be U.S. Bureau of Mines approved or acceptable to other authorities recognized by the division and shall automatically…