Michigan Administrative Code

R 408.40711 Employer and employee responsibilities. Rule 711. (1) An employer shall do all of the following: (a) Assure that each employee has received safety training in the use of equipment for welding operations and instruction in the rules of this part before allowing the emp…

R 408.40712 Requirements generally. Rule 712. (1) Only apparatus designed for use with fuel gas or oxygen, such as a torch, regulator, pressure-reducing valve, acetylene generator, and manifold, shall be used for welding or cutting. (2) Fuel gas, oxygen, or compressed air shall n…

R 408.40713 Working in confined spaces. Rule 713.(1) Before the start of a welding operation in a confined space, the employer shall ensure that the atmosphere is tested and recorded. Ventilation shall be provided and maintained in accordance with the requirements of the departme…

R 408.40715 Torches generally. Rule 715. (1) A torch shall be inspected before each shift for leaking shutoff valves, hose and tip connections, and clogged tips. A defective torch shall not be used. (2) A clogged tip opening shall be cleaned with a device, such as a drill or clea…

R 408.40721 Cylinders manufacturing, labeling, periodic testing, and marking. Rule 721. (1) A cylinder shall be manufactured, labeled, and periodically tested in accordance with the specifications of the federal department of transportation requirements published in 49 C.F.R. Par…

R 408.40722 Storage. Rule 722. (1) An oxygen cylinder shall be stored not less than 20 feet from fuel gas cylinders or any highly combustible material, such as, but not limited to, oil, grease, excelsior, flammable gas, or a source of ignition, or shall be separated from the mate…

R 408.40723 Cylinders generally. Rule 723. (1) A chain, bracket, or other restraining device shall be used at all times to prevent cylinders from falling. (2) A cylinder shall stand valve end up at all times. (3) A cylinder shall not be dropped, dragged, rolled on its side, or st…

R 408.40731 Hoses and connections. Rule 731. (1) Hose and hose connections used for a welding operation shall be as prescribed in paragraph 3.5.6 of the American National Standard Institute Standard ANSI/AWS Z49.1, “Safety in Welding and Cutting and Allied Processes,” 1973 editio…

R 408.40732 Regulators and protective devices. Rule 732. (1) The use of regulators shall comply with the following requirements: (a) Regulators shall be used only for the gas and pressure for which they are intended. (b) Regulators shall be repaired by authorized and trained pers…

R 408.40741 Arc welding machines. Rule 741. (1) An arc welding machine shall be capable of operating safely in the environment in which it is located. The design and construction shall enable the machine to carry its rated load with rated temperature rise where the temperature of…

R 408.40743 Design requirements for arc welding machines. Rule 743. (1) A controller integrally mounted in an electric motor-driven welding machine shall have the capacity for carrying rated motor current and shall be capable of making and interrupting stalled rotor current of th…

R 408.40744 Installation. Rule 744. (1) The frame or case of a welding machine shall be grounded, unless the manufacturer does not recommend it. (2) The work on which the operator welds shall be grounded. A wire used to ground a workpiece shall be capable of carrying the full wel…

R 408.40745 Welding cables and electrode holders. Rule 745. (1) An arc welding and cutting cable shall be of the completely insulated, flexible-type and shall be capable of handling the maximum current requirements of the work, taking into account the duty cycle under which the w…

R 408.40746 Operation. Rule 746. (1) Engine fuel, cooling water, or shielding gas shall not be allowed to leak. (2) A welding machine shall be disconnected when being moved and shall be turned off when not in use. (3) Electrodes shall be retracted or removed when not in use. Elec…

R 408.40747 Maintenance of arc welding machines. Rule 747. (1) Spliced welding cable shall not be used within 10 feet (3.05 meters) of an arc welding machine. (2) Equipment in need of repair that constitutes a safety hazard shall not be used or put in use until repairs are made b…

R 408.40751 Personal protective equipment. Rule 751. (1) A welder shall wear face and eye protection when performing welding operations and by other employees exposed to a risk of injury from spatter or flash, or both. The protective devices shall be provided for as prescribed in…

R 408.40761 Fire precautions. Rule 761. (1) Welding operations shall not be performed within 50 feet of explosives, stored cylinders, or stored fuel. Combustible and flammable materials located within 35 feet of a welding operation shall either be removed or covered with fire- re…

R 408.40762 Welding drums, barrels, tanks, or other containers. Rule 762. (1) Welding operations shall not be performed on drums, barrels, tanks, or other containers until they have been cleaned of all flammable, combustible, or toxic materials or fumes. (2) All pipelines or othe…

R 408.40810 Scope and adoption by reference of standards. Rule 810. (1) This standard pertains to the handling and storage of construction materials, including care and use of slings, ropes, and chains for a construction operation, except for specific rules covering materials cov…

R 408.40817 Definitions. Rule 817. (1) "Block" means a masonry unit having 1 dimension exceeding 15 inches, and 1 of its other 2 dimensions exceeding 7 inches. (2) "Brick" means a masonry unit which is not a block. (3) "Chain" means a series of metal links connected to, or fitted…

R 408.40818 General provisions; storage. Rule 818. (1) All material shall be stacked, racked, blocked, interlocked, or otherwise secured to prevent sliding, falling, or collapse during storage or transit. (2) Structural steel, poles, pipe, bar stock, and other cylindrical materia…

R 408.40819 Storage of bagged material, brick, and block. Rule 819. (1) Bagged material on a pallet shall be all of the following: (a) Not more than 36 inches in height. (b) Secured to prevent displacement from the pallet before moving. (c) Stacked not more than 2 pallets high. (…

R 408.40820 Storage of lumber. Rule 820. (1) Lumber shall be stacked on level and solidly supported sills so as to be self- supporting and stable. (2) A pile of lumber manually stacked, and a pile of lumber to be manually unstacked, shall not exceed 6 feet in height. (3) Lumber w…

R 408.40821 Storage of material in bins or hoppers. Rule 821. A bin or hopper that has a bottom discharge shall have sloped sides to allow material to flow freely. History: 1979 AC; 1982 AACS; 1996 AACS; 2004 AACS; 2013 AACS.

R 408.40822 Clearances. Rule 822. (1) Material stored near an electrical distribution or transmission line shall maintain the following clearances: (a) Line rated 50 kV or less--10 feet plus length of material stored. (b) Line rated 50 kV or more--10 feet plus 0.4 inch for each 1…

R 408.40823 Compressed gas. Rule 823. The handling and storage of all compressed gases, except those used for welding and cutting, shall be as prescribed in the Compressed Gas Association Standard, P-1--2000, “Safe Handling of Compressed Gases in Containers,” in R 408.40810. Hist…

R 408.40832 Rigging equipment. Rule 832. (1) Rigging equipment for material handling shall be inspected at the time of installation, before each job, and at the beginning of each shift if in use, by an employee qualified to perform this inspection. Defective rigging equipment sha…

R 408.40833 Slings. Rule 833. (1) All slings used to store or handle material for construction operations shall meet the requirements of General Industry Safety Standard Part 49 “Slings,” as referenced in R 408.40810. (2) Employers shall ensure that rigging equipment complies wit…

R 408.40834 Wire ropes. Rule 834. (1) Wire rope shall be taken out of service if any of the following conditions exist: (a) In running ropes, 6 randomly distributed broken wires in 1 lay or 3 broken wires in 1 strand in 1 lay. (b) Wear of 1/3 the original diameter of outside indi…

R 408.40835 Natural and synthetic fiber rope; specifics. Rule 835. (1) A natural or synthetic fiber rope used for hoisting, lowering, or pulling shall consist of 1 continuous piece without a knot or splice, except an eye splice at the end of the rope. (2) An eye splice for manila…

R 408.40836 Hooks, shackles, and other accessories. Rule 836. (1) A hook, ring, oblong link, pear-shaped link, welded or mechanical coupling link, or other attachment, when used with alloy steel chain, shall have a rated capacity equal to the chain or rope to which it is attached…

R 408.40837 Chains. Rule 837. (1) Chains used for material handling shall be made of alloy steel. (2) A welded alloy steel chain shall have a permanently affixed tag showing the size, grade, rated capacity, and manufacturer's name. (3) If wear at any point of any chain link is mo…

R 408.40840 Shackles and hooks safe working loads. Rule 840. (1) The manufacturer's recommendations shall be followed in determining the safe working loads of the various sizes and types of specific and identifiable hooks. All hooks for which manufacturer's recommendations are no…

R 408.40841 Synthetic webbing (nylon, polyester, and polypropylene). Rule 841. (1) Employers shall use natural- and synthetic-fiber rope slings that have permanently affixed and legible identification markings that state the rated capacity for the type or types of hitch or hitche…

R 408.40901 Scope and referenced standards. Rule 901. (1) This part pertains to the digging of excavations and trenches which an employee is required to enter and the supporting systems used on construction operations. (2) The following Michigan occupational safety and health (MI…

R 408.40925 Definitions A to Q. Rule 925. (1) "Angle of repose" means the maximum permissible slope as determined by table 1. (2) “Benching” means a method of protecting employees from cave-ins by excavating the sides of an excavation to form 1 or a series of horizontal levels or…

R 408.40926 Definitions; S. Rule 926. (1) “Sheeting” means the members of a shoring system that retain the earth in position and in turn are supported by other members of the shoring system. (2) "Sheet piling" means a continuous row of timber or steel piles driven in close contac…

R 408.40931 Locating utility lines. Rule 931. (1) An employer shall not excavate in a street, highway, public place, a private easement of a public utility, or near the location of a public utility facility owned, maintained, or installed on a customer's premises, without having …

R 408.40932 Excavation; consideration of soil types; water; slide hazards. Rule 932. (1) If different textured soils are encountered in the side of an excavation, each soil type of the excavation shall be cut to the proper angle of repose, except that the slope shall not steepen …

R 408.40934 Hazardous atmospheres; testing and controls. Rule 934. To prevent exposure to harmful levels of atmospheric contaminants and to assure acceptable atmospheric conditions, all of the following requirements shall apply: (a) Where an oxygen deficiency (an atmosphere that …

R 408.40941 Excavation; angle of repose. Rule 941. (1) The side of an excavation more than 5 feet deep shall be sloped as prescribed in table 1, unless supported as prescribed in this part. (2) An excavation less than 5 feet in depth shall also be effectively protected when exami…

R 408.40943 Additional requirements for trench support systems. Rule 943. (1) Members of support systems shall be securely connected together to prevent sliding, falling, kickouts, or other predictable failure. (2) The backfilling and the removal of a support system for a trench …

R 408.40944 Benching and sloping. Rule 944. (1) The angle of repose shall be flattened when an excavation has water conditions, silty materials, loose boulders, or areas where erosion, deep frost action, or slide planes appear. (2) When benching the side of an excavation, the ver…

R 408.40945 Trenching boxes and shields. Rule 945. (1) Portable trench boxes or sliding trench shields may be used for the protection of personnel in place of a shoring system or sloping. Where such trench boxes or shields are used, they shall be designed, constructed, and mainta…

R 408.41001 Scope, adoption, and availability of standards. Rule 1001. (1) This standard applies to power-operated equipment, when used in construction, that can hoist, lower, and horizontally move a suspended load. Such equipment includes, but is not limited to, any of the follo…

R 408.41101 Scope . Rule 1101. This part establishes minimum requirements for the construction, care, and training in the use of portable and fixed ladders for construction, alteration, or repair operations . History: 1979 AC; 1993 AACS . R 408.41102 Rescinded. History: 1979 AC; …

R 408.41103 Definitions; B to I . Rule 1103. (1) "Brand" means marking by burning with a hot iron . (2) "Cage," "cage guard," or "basket guard" means an enclosure that is fastened to the side rails of a fixed ladder or to the structure to encircle the climbing space of a ladder f…