reglab/statecodes huggingface dataset:
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 11 - POLISHING, BUFFING & ABRADING › Section R. 408.11123 - Illumination

Current through Vol. 24-12, July 15, 2024
Rule 1123.
(1)
					 Automatic polishing and buffing machinery and equipment shall be located with
					 respect to sources of natural light so that light of 25 footcandles intensity
					 will fall on the loading and unloading area. When natural light is insufficient
					 to meet this requirement, artificial light shall be provided.
(2) Hand polishing and buffing machinery and
					 equipment shall be located with respect to sources of natural light so that
					 light of 30 footcandles intensity will fall on the work. When natural light is
					 insufficient to meet this requirement, artificial light shall be
					 provided.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 11 - POLISHING, BUFFING & ABRADING › Section R. 408.11131 - Operations

Current through Vol. 24-12, July 15, 2024
Rule 1131.
(1)
					 Buffing or polishing shall be performed on the off side.
(2) Buffing compound, when applied to a
					 revolving wheel, shall be applied to the off side.
(3) The wheel speed shall not exceed the
					 manufacturer's recommended revolutions per minute.
(4) Coated abrasives shall be run according
					 to the direction (->) indicated by the manufacturer.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 11 - POLISHING, BUFFING & ABRADING › Section R. 408.11135 - Storage of abrasives

Current through Vol. 24-12, July 15, 2024
Rule 1135. Coated abrasives shall be stored under
						conditions of temperature and humidity to prevent breakage or
						warpage.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 11 - POLISHING, BUFFING & ABRADING › Section R. 408.11137 - Fire and explosion precautions

Current through Vol. 24-12, July 15, 2024
Rule 1137. Precautions shall be taken to protect against
						fire and explosion hazards involving aluminum, magnesium, titanium, lint, wax,
						and solvent when polishing, buffing, or abrading.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL PROVISIONS › Section R. 408.11201 - Scope

Current through Vol. 24-12, July 15, 2024
Rule 1201. This part is intended to provide, in, about,
						  or around places of employment, reasonable safety to persons involved in
						  welding, cutting, brazing, soldering, and acetylene generating and to those
						  exposed to these processes and the equipment and compressed gases
						  used.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL PROVISIONS › Section R. 408.11202 - Adoption and referenced standards

Current through Vol. 24-12, July 15, 2024
Rule 1202.
(1)
						The following standards are adopted by reference in these rules and are
						available from Global Engineering Documents, 15 Inverness Way East, Englewood,
						Colorado, 80112, USA; telephone number: 1-800-854-7179; or at web-site:
www.global.ihs.com
, at a cost as of the
						time of adoption of these rules as stated in this rule.
(a) American National Standards Institute
						ANSI B31.1 "Industrial Gas and Air Piping Systems," 1967 edition. Cost:
						$96.00.
(b) ANSI B57.1 "Compressed
						Gas Cylinder Valve Outlet and Inlet Connections," 1965 edition. Cost:
						$29.00.
(c) American Petroleum
						Institute API 1104 "Standard for Welding Pipe Lines and Related Facilities,"
						1973 edition. Cost: $125.00.
(d)
						API PSD 2201 "Welding or Hot Tapping on Equipment Containing Flammables," 1963
						edition. Cost: $125.00.
(e)
						American Society of Mechanical Engineers ASME A13.1 "Identification of Piping
						Systems," 1956 edition. Cost: $60.00.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL PROVISIONS › Section R. 408.11203 - Definitions; A to C

Current through Vol. 24-12, July 15, 2024
Rule 1203.
(1)
						"AC" means alternating current.
(2)
						"Arc welding" means a process for joining metals by heating with an electric
						arc with or without the use of pressure with or without a filler
						material.
(3) "Brazing" means a
						process of joining metals without melting them with a filler metal melting
						above 800 degrees F.
(4) "Confined
						space" means a small or restricted space without proper life supporting
						atmosphere or in which mobility is restricted.
(5) "Cutting" means a process in which the
						severing or removing of metal is effected by the use of an arc or
						flame.
(6) "Cylinders" means
						containers for storing compressed gases manufactured, labeled, and periodically
						tested in accordance with specifications of the department of transportation
						regulations.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL PROVISIONS › Section R. 408.11204 - Definitions; D to N

Current through Vol. 24-12, July 15, 2024
Rule 1204.
(1)
						"DC" means direct current.
(2)
						"Fire resistance" means the property of a material or assembly to withstand
						fire or give protection from it.
(3) "Gas welding" means a process for joining
						metals by heating with a gas flame with or without the use of pressure and with
						or without the use of a filler material.
(4) "Inert gas" means argon, carbon dioxide,
						helium, or nitrogen gas.
(5)
						"Manifold" means an assembly of pipe and fittings to interconnect either single
						or multiple sources to single or multiple outlets.
(6) "Noncombustible" means having properties
						which do not support combustion.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL PROVISIONS › Section R. 408.11205 - Definitions; P to W

Current through Vol. 24-12, July 15, 2024
Rule 1205.
(1)
						"Press welding machine" means a machine that utilizes 2 platens, 1 of which
						moves toward the other during the initial part of the machine cycle. It does
						not provide welding pressure. After 1 of the platens has moved to a stop
						position, the welding pressure required for the welding operation is applied by
						1 or more air or hydraulic cylinders.
(2) "Psig" means pounds per square inch as
						measured by a gauge.
(3)
						"Resistance welding" means the joining of metals by the use of heat generated
						at the joint by the resistance to the flow of electric current and by the
						application of pressure.
(4)
						"Soldering" means a process of joining metals without melting them using a
						filler metal melting at 800 degrees Fahrenheit, 427 degrees centigrade, or
						below.
(5) "Spot welding" means a
						form of resistance welding in which the current and pressure are restricted to
						the spot of metal surfaces directly in contact between the
						electrodes.
(6) "Storage" means the
						storage of filled or empty cylinders not in use. An oxidizing and fuel gas
						cylinder or cylinders used as a unit shall not be considered to be in
						storage.
(7) "Water capacity" means
						the weight of water, as related to liquefied gas, of a volume equivalent to
						that of the cylinder.
(8) "Welder"
						means a person capable of performing a manual or semiautomatic welding
						operation.
(9) "Welding operator"
						means a person who operates a machine or automatic welding equipment.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL PROVISIONS › Section R. 408.11211 - Employer and employee responsibilities

Current through Vol. 24-12, July 15, 2024
Rule 1211.
(1)
						An employer shall do all of the following:
(a)
						Give each employee training or a test before allowing him or her to use
						equipment for arc and gas welding and cutting.
(b) Provide face and eye protection and foot
						protection as prescribed in general industry safety standard Part 33 "Personal
						Protective Equipment," as referenced in
						R
						408.11202.
(c) Provide other personal protective
						clothing or equipment, such as gloves, aprons, hearing protection devices,
						respirators, lifelines, safety belts, and lanyards required to protect the
						employee from injury likely to be caused by the assigned task of welding and
						cutting. Except for long sleeve shirts required to protect the employee from
						ultraviolet rays to the arms and ankle length trousers, the personal protective
						clothing and equipment shall be provided without expense to the
						employee.
(d) Provide to an
						employee, at no expense to the employee, protective devices such as, but not
						limited to, curtains, safety glasses, or face shields to reduce the risk of
						flash burn, sparks, and foreign bodies to all employees in the area.
(e) Provide ventilation where necessary to
						protect an employee against toxic materials as prescribed by the Michigan
						Occupational Safety and Health Administration (MIOSHA) standards.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL PROVISIONS › Section R. 408.11212 - General requirements

Current through Vol. 24-12, July 15, 2024
Rule 1212.
(1)
						A mixture of fuel gas with air or oxygen shall not be permitted except when
						consumed at a burner or torch.
(2)
						Only apparatus designed for use with fuel gas or oxygen shall be used for
						welding or cutting.
(3) The total
						volume of acetylene used per hour shall not exceed 1/7 of the total volume of
						the acetylene supply in the system.
(4) Liquid acetylene shall not be
						used.
(5) A cylinder to which a
						regulator is attached shall not be moved unless secured to a hand truck or
						powered truck designed or equipped for this purpose.
(6) A cylinder valve shall be closed in all
						of the following situations:
(a) When the
						cylinder is moved.
(b) When the
						work is finished or is left unattended during lunch, overnight, or for any
						other prolonged period.
(c) When
						the cylinder is empty.
(d) When the
						regulator is removed.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › CONFINED SPACES › Section R. 408.11213 - Working in confined spaces

Current through Vol. 24-12, July 15, 2024
Rule 1213.
(1)
						When working in a confined space, the torch valves and the gas supply valve and
						oxygen valve outside the confined space shall be shut off during lunch,
						overnight, or for any other prolonged period. Where practicable, the torch and
						hose shall be removed from the confined space.
(2) When stick electrodes are used in a
						confined space, and welding is suspended during lunch, overnight, or for any
						other prolonged period, the electrode shall be removed from the holder and the
						machine shut off.
(3) The air in a
						confined space shall be tested with an approved device and purged, if
						necessary, before any entry. Ventilation shall be provided in the confined
						space when an employee is present.
(4) A cylinder or welding power source used
						in a confined space shall be placed and secured on the outside of the space
						where work is being performed.
(5)
						An employee who is trained in rescue procedures, and with such equipment as is
						necessary to effect a rescue, if needed, shall be stationed outside the
						confined space during welding or cutting operations. An employer shall ensure
						that an effective means of communication is established between employees in
						the confined space and the attendant. When safety belts and lifelines are used,
						they shall be provided and used as prescribed in general industry safety
						standard Part 33 "Personal Protective Equipment," as referenced in
						R
						408.11202, and attached to the welder's body so that
						his or her body cannot be jammed in a small exit opening.
(6) After welding operations are completed in
						a confined space, a sign or other warning shall be used to mark the hot
						metal.
An obvious
						  error in R 408.11213 was corrected at the request of the promulgating agency,
						  pursuant to Section 56 of 1969 PA 306, as amended by 2000 PA 262, MCL 24.256.
						  The rule containing the error was published in Annual Administrative Code
						  Supplement, 2013. The memorandum requesting the correction was published in
						  Michigan Register, 2014 MR 13
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › CYLINDERS › Section R. 408.11221 - Cylinder marking

Current through Vol. 24-12, July 15, 2024
Rule 1221.
(1)
						Compressed gas cylinders shall be legibly marked, for the purpose of
						identifying the gas content, with either the chemical or trade name of the gas.
						Such marking shall be by means of stenciling, stamping, or labeling and shall
						not be readily removable. Whenever practical, the marking shall be located on
						the shoulder of the cylinder.
(2)
						Unlabeled cylinders shall not be used.
(3) Empty cylinders shall be so marked at
						time of depletion.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › CYLINDERS › Section R. 408.11223 - General rules for cylinders-I

Current through Vol. 24-12, July 15, 2024
Rule 1223.
(1)
						A chain, bracket, or other restraining device shall be used at all times to
						prevent cylinders from falling.
(2)
						Acetylene or liquefied gas cylinders shall not be placed on their sides, but
						shall be stood valve end up.
(3) A
						cylinder shall not be dropped, dragged, rolled on its side, or struck
						violently.
(4) A cylinder shall be
						lifted only by cradles or enclosed platforms when using a crane or hoisting
						device. Electromagnets, hooks, ropes, or slings shall not be used.
(5) A frozen or ice clogged valve shall be
						thawed either by warm air or use of warm water and dried before using. Boiling
						water or a flame shall not be used. Force shall not be applied to a valve or
						cap to loosen a cylinder frozen in place.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › CYLINDERS › Section R. 408.11224 - General rules for cylinders-II

Current through Vol. 24-12, July 15, 2024
Rule 1224.
(1)
						Gases shall not be mixed within a cylinder except by the supplier.
(2) A cylinder shall not be placed where it
						will become a part of the electrical circuit by accidental grounding or where
						it may be burned by electric welding arc. A cylinder shall not be placed so
						that hot slag or flame will reach it or it shall be protected by a fire
						resistant shield. An electrode shall not be tapped against a cylinder to strike
						an arc.
(3) A regulator, gauge, or
						hose shall not be interchangeable between fuel gas, oxidizing gas or inert gas.
						Connections for compressed gas cylinders shall be as prescribed in ANSI B57.1-
						"Compressed Gas Cylinder Valve Outlet and Inlet Connections," 1965 edition, as
						adopted in
						R
						408.11202.
(4) A cylinder valve shall be opened slightly
						for an instant and then closed before connecting to a regulator or manifold to
						clear the valve of dust and dirt. This shall not be done near a source of
						ignition. Pressure to a regulator shall be introduced by slowly opening the
						cylinder valve. An acetylene cylinder valve shall not be opened more than 1 1/2
						turns of the spindle.
(5) Acetylene
						shall not be utilized or piped, except in cylinder manifolds, at a pressure in
						excess of 15 psig.
(6) Only the
						owner of the cylinder, if the owner is qualified, or a person trained,
						qualified, and authorized by the owner, shall refill a cylinder.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › CYLINDERS › Section R. 408.11225 - Cylinders; keys, handles, or wrenches; use as roller or support prohibited; repair; placing items on top prohibited

Current through Vol. 24-12, July 15, 2024
Rule 1225.
(1)
						A cylinder without fixed hand wheels shall have keys, handles, or nonadjustable
						wrenches on valve stems while in service. A multiple cylinder installation
						shall require only 1 key or handle for each manifold. A hammer shall not be
						used to open a cylinder valve or loosen a cap.
(2) A cylinder, whether full or empty, shall
						not be used as a roller or support.
(3) A leaking cylinder or a cylinder with a
						valve stuck open or a valve in need of repair shall be taken outdoors away from
						sources of ignition, slowly emptied, and tagged with a warning sign and the
						manufacturer or distributor shall be notified. Complete removal of the stem
						from the cylinder valve shall be avoided.
(4) Nothing shall be placed on top of a
						cylinder which would damage a safety device or interfere with the quick closing
						of the valve.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING › Section R. 408.11231 - Oxygen manifolding

Current through Vol. 24-12, July 15, 2024
Rule 1231.
(1)
						An oxygen manifolding unit shall be located not less than 20 feet from
						combustible materials or separated by a noncombustible barrier, not less than 5
						feet high, having a fire-resistance rating of at least 1/2 hour.
(2) An oxygen manifold shall not be located
						in acetylene generating rooms.
(3)
						Each container and manifold unit shall be labeled to show the name of the gas
						contained.
(4) Each manifold shall
						be provided with approved pressure regulation devices.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING › Section R. 408.11232 - High-pressure oxygen manifolds

Current through Vol. 24-12, July 15, 2024
Rule 1232.
(1)
						An oxygen high-pressure manifold shall be not more than 6,000 cubic feet,
						except as permitted in subrule (3) of this rule.
(2) More than 1 unit may be located in a
						room, but they shall be not less than 50 feet (16 meters) apart or separated by
						a noncombustible barrier not less than 5 feet (1.6 meters) high having a fire
						resistance of 1/2 hour.
(3) An
						oxygen high-pressure manifold with an aggregate of more than 6,000 cubic feet
						(170 cubic meters approximately) shall be located outdoors in a separate
						noncombustible building or, if located in a building that is otherwise
						occupied, the manifold shall be located in a separate room of noncombustible
						construction having a fire-resistance rating of 1/2 hour or in an area with no
						combustible material within 20 feet (6.1 meters) of the manifold.
(4) An oxygen manifold or oxygen bulk supply
						system with a storage capacity of more than 20,000 cubic feet (560 cubic
						meters), including unconnected reserves, shall be as prescribed in
						R
						408.11222(9).
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING › Section R. 408.11233 - Low pressure oxygen manifolds

Current through Vol. 24-12, July 15, 2024
Rule 1233.
(1)
						The operating pressure of a low pressure oxygen manifold shall be not more than
						250 psig. The following sign shall be posted at each low pressure oxygen
						manifold:
LOW PRESSURE MANIFOLD:
Do not connect high pressure cylinders
Maximum pressure--250 psig
(2) A low pressure oxygen manifold shall have
						a minimum bursting pressure of 1,000 psig and shall be protected by a safety
						relief valve which will relieve at a maximum pressure of 500 psig. The safety
						relief vent shall discharge outside of the plant at a point away from a source
						of ignition and where reentry could not occur.
(3) A hose or hose connection subject to
						manifold pressure shall have a minimum bursting pressure of 1,000
						psig.
(4) An assembled manifold
						including leads shall be tested and proved gas tight at a pressure of 300 psig
						(2070 kPa gage). The material used for testing oxygen manifolds shall be
						oil-free and not combustible.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING › Section R. 408.11234 - Fuel gas manifolding

Current through Vol. 24-12, July 15, 2024
Rule 1234.
(1)
						Fuel gas connected to 1 manifold inside a building shall have a total gas
						capacity of not more than 3,000 cubic feet (85 cubic meters approximately) or
						11.8 cubic feet (.33 cubic meters) of liquefied gas, which is 735 pounds (333
						kilograms) water capacity. More than 1 manifold unit may be located in a room,
						but the manifolds shall be not less than 50 feet (16 meters) apart or be
						separated by a noncombustible barrier not less than 5 feet (1.6 meters) high
						having a fire-resistance rating of 1/2 hour.
(2) Fuel gas capacity on 1 manifold of more
						than 3,000 cubic feet (85 cubic meters approximately) or 11.8 cubic feet (.33
						cubic meters) of liquefied gas, which is 735 pounds (333 kilograms) water
						capacity, is permissible in a separate room or compartment, as specified in
						R
						408.11222(8), or located outside the
						building.
(3) The pressure in the
						gas cylinders connected to, and discharged simultaneously through, a common
						manifold shall be approximately equal.
(4) Manifolds shall be approved either
						separately for each component part or as an assembled unit.
An obvious
						  error in R 408.11234 was corrected at the request of the promulgating agency,
						  pursuant to Section 56 of 1969 PA 306, as amended by 2000 PA 262, MCL 24.256.
						  The rule containing the error was published in Annual Administrative Code
						  Supplement, 2013. The memorandum requesting the correction was published in
						  Michigan Register, 2014 MR 13
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING-SERVICE PIPING › Section R. 408.11241 - Piping material

Current through Vol. 24-12, July 15, 2024
Rule 1241.
(1)
						Piping for acetylene shall be limited to steel and ductile iron.
(2) Piping for other gases shall be
						compatible with the gas.
(3) Oxygen
						at pressures of more than 700 psig shall be run in stainless steel or copper
						alloy piping.
(4) Gray or white
						cast iron fittings shall not be used.
(5) Pipe and fittings shall be as prescribed
						in section 2 of the ANSI B31.1 "Industrial Gas and Air Piping Systems," 1967
						edition, as adopted in
						R
						408.11202, except for the following:
(a) Pipe shall be not less than schedule 40
						and fittings not less than standard weight in sizes up to and including 6-inch
						nominal.
(b) Copper tubing shall be
						type K or L.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING-SERVICE PIPING › Section R. 408.11243 - Installation and identification of piping

Current through Vol. 24-12, July 15, 2024
Rule 1243.
(1)
						Above ground piping, station outlet, and section valves shall be identified as
						to contents by color or name, or both, as prescribed in ASME A13.1
						"Identification of Piping Systems," 1956 edition, as adopted in
						R
						408.11202.
(2) A cylinder manifold shall be installed
						under the supervision of an individual experienced in the proper practices with
						reference to its installation and use.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING-SERVICE PIPING › Section R. 408.11244 - Station outlets

Current through Vol. 24-12, July 15, 2024
Rule 1244.
(1)
						A station outlet shall be equipped with a shutoff valve for each torch supplied
						from it, designated VF and VO in
						FIGURE 1, located upstream of other station outlet equipment.
(2) A station outlet shall be provided
						backflow prevention devices, designated as SF and
						SO in FIGURE 1, at each station outlet, including those
						on a portable header, to prevent backflow, except where pipeline protection
						equipment, designated as PF in FIGURE 1, C is located at
						the station outlet.
(3) A station
						outlet shall terminate with an approved union connection for a regulator or a
						hose, except that the outlet may terminate with pipe threads where a permanent
						connection is made, such as to a machine.
(4) Each station outlet shall be equipped
						with a detachable seal outlet cap, secured in place, which shall seal the
						outlet except when a hose, regulator, or piping is attached.
(5) The total volume of acetylene used per
						hour shall not exceed 1/7 of the total volume of the acetylene supply in the
						system.
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LEGEND:
PF
Protective equipment in fuel gas
										piping
VF
Fuel gas station outlet valve
VO
Oxygen station outlet valve
SF
Backflow prevention devices(s) at fuel gas
										station outlet
SO
Backflow prevention device(s) at oxygen
										station outlet
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › MANIFOLDING-SERVICE PIPING › Section R. 408.11245 - Portable outlet headers

Current through Vol. 24-12, July 15, 2024
Rule 1245.
(1)
						A portable outlet header shall not be used indoors, except where conditions
						preclude a direct supply from an outlet located on the service piping
						system.
(2) A master shutoff valve
						shall be provided for oxygen and fuel gas at the entrance of the portable
						outlet header.
(3) A portable
						outlet header shall be provided the protective devices prescribed in
						R
						408.11252.
(4) Each service outlet of a portable outlet
						header shall be provided with a valve assembly which includes a detachable
						outlet seal cap, chained or otherwise secured to the valve body.
(5) A portable outlet header shall be
						provided a frame which will support the equipment in position and protect it
						from damage during handling and operation.
(6) Each outlet on the service piping from
						which oxygen or fuel gas is withdrawn to supply a portable outlet header shall
						be equipped with a readily accessible shutoff valve.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › PRESSURE DEVICES › Section R. 408.11251 - Pressure devices

Current through Vol. 24-12, July 15, 2024
Rule 1251. Pressure regulating and relief devices shall
						  be provided and set to function at not more than the designed pressure and to
						  discharge away from a source of ignition.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › PROTECTIVE DEVICES › Section R. 408.11252 - Protective devices

Current through Vol. 24-12, July 15, 2024
Rule 1252.
(1)
						Protective equipment shall be installed in fuel gas piping to prevent backflow
						of oxygen into the fuel gas supply system, passage of a flashback into the fuel
						gas supply system and excessive back pressure of oxygen in the fuel gas supply
						system. See PF in FIGURE 1.
(2) The 3 functions may be combined in 1
						device or provided by separate devices.
(3) The protective equipment shall be located
						in the main supply line as shown in FIGURE 1, A. In addition, an employer may
						use protective equipment shown in FIGURE 1, B and C. Where a branch is sized 2
						inches or more, the protective equipment PF shall be
						provided as prescribed in FIGURE 1, B or C.
(4) Backflow protection shall be provided by
						a device that will prevent fuel gas from flowing into the oxygen system or
						oxygen from flowing into the fuel-gas system. See FIGURE 1, A and B and
						PF in FIGURE 1, A, B, and C.
(5) A pressure relief device shall be set at
						a pressure not more than the pressure rating of the backflow or flash-back
						protection devices, whichever is lower, and shall be located on the downstream
						side of both of these devices. Its vent shall be as large as the inlet and
						terminate in a hood or bend away from a source of ignition. The vent shall be
						installed without low points that may collect moisture. If low points are
						unavoidable, drip pots with drains closed with screw plugs or caps shall be
						installed at the low points. A shutoff valve shall not be installed in the vent
						line.
(6) Fuel gas for use with
						equipment not requiring oxygen shall be withdrawn upstream of the piping
						protective devices.
(7) Piping
						protective equipment incorporating a liquid shall have the level maintained.
						Antifreeze may be used to prevent freezing.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › HOSES AND REGULATORS › Section R. 408.11253 - Hoses and connections

Current through Vol. 24-12, July 15, 2024
Rule 1253.
(1)
						Only approved hose and connections shall be used. A hose connection shall be
						fastened to withstand twice the working pressure without leaking, but not less
						than 300 psig (2070 kPa). Oil-free air or an oil-free inert gas shall be used
						for the test.
(2) Parallel lengths
						of hose taped together shall have not more than 4 inches out of each 12 covered
						by tape.
(3) Parallel hoses shall
						be color coded as follows:
(a) Red--fuel
						gases.
(b) Green--oxygen.
(c) Black--inert gas or air.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › HOSES AND REGULATORS › Section R. 408.11254 - Regulators

Current through Vol. 24-12, July 15, 2024
Rule 1254. Regulators shall:
(a) Be used as specified in
						R
						408.11224(3).
(b) Be inspected for faulty seats and
						repaired when found defective.
(c)
						Be repaired by authorized and trained personnel, or be returned to the supplier
						for calibration or repairs.
(d) Not
						be removed until the cylinder valve is closed and the regulator
						drained.
(e) Have gauges marked
						"Use No Oil" when used for oxygen.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL FIRE RULES › Section R. 408.11261 - Fire precautions

Current through Vol. 24-12, July 15, 2024
Rule 1261.
(1)
						Cutting and welding shall be done in designated areas free of flammables or
						conditions favorable to fire or explosion. If it is not practical to perform
						the work in a designated area, a person shall be assigned responsibility for
						fire safety of the job and shall take the following action after inspecting the
						job site and designating precautions to be taken:
(a) Move flammables a minimum of 35 feet
						(10.7 m) from the area, cover the flammables with a fire resistant covering, or
						schedule the work for a time when the flammables have been removed.
(b) Cover cracks in the floor or walls that
						are within 35 feet (10.7 m) of the welding or cutting process if they could
						pass sparks to other areas.
(c) Wet
						down wooden floors, except when laid over concrete, and provide a bucket or pan
						containing water or sand or cover with a fire resistant shield. Where the floor
						has been wet down, arc welding operators shall be protected from
						shock.
(d) Have appropriate
						portable fire extinguishers on hand for use by trained employees.
(e) If there is a possibility that a
						smoldering fire may have started, keep an observer at the scene of the work for
						at least 30 minutes after the welding or cutting has stopped.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › GENERAL FIRE RULES › Section R. 408.11262 - Welding drums, barrels, tanks, or other containers

Current through Vol. 24-12, July 15, 2024
Rule 1262.
(1)
						Welding or cutting 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 pipe
						lines or other connections to drums, barrels, or tanks shall be disconnected or
						blanked.
(3) Hollow spaces or
						cavities shall be vented and either filled with water or purged with an inert
						gas before preheating, cutting, or welding.
(4) An opening shall be maintained during
						welding and cutting to vent gases or vapors.
(5) The welded construction of a transmission
						pipeline shall be conducted in accordance with API 1104 "Standard for Welding
						Pipe Lines and Related Facilities," 1973 edition, as adopted in
						R
						408.11202.
(6) The connection, by welding, of branches
						to a pipeline carrying a flammable substance shall be performed in accordance
						with API PSD 2201 "Welding or Hot Tapping on Equipment Containing Flammables,"
						1963 edition, as adopted in
						R
						408.11202.
An obvious
						  error in R 408.11262 was corrected at the request of the promulgating agency,
						  pursuant to Section 56 of 1969 PA 306, as amended by 2000 PA 262, MCL 24.256.
						  The rule containing the error was published in Michigan Register, 2013 MR 11.
						  The memorandum requesting the correction was published in Michigan Register,
						  2013 MR 21
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › ARC WELDING AND CUTTING › Section R. 408.11271 - Arc welding machines

Current through Vol. 24-12, July 15, 2024
Rule 1271.
(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 the
						cooling air is not more than 104 degrees Fahrenheit and where the altitude is
						not more than 3,300 feet (1,000 m approx.).
(2) Where unusual service conditions, such as
						corrosive fumes, steam, oil vapor, flammable gases, vibration, shock, dust, or
						weather exist, a specially designed machine shall be used.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › ARC WELDING AND CUTTING › Section R. 408.11272 - Open circuit and no-load voltages of arc welding machines

Current through Vol. 24-12, July 15, 2024
Rule 1272.
(1)
						When an arc welding machine is operated without being connected to a load, the
						open circuit voltage shall not exceed the values shown in table 1 when rated
						voltage is applied to the primary winding or when a generator type arc welding
						machine is operating a maximum rated no-load speed.
TABLE 1
MAXIMUM OPEN CIRCUIT VOLTAGE S OF WELDING
									 MACHINES
Welding Current
Max. Open Circuit (no-load) Voltage
Manual and Semiautomatic
									 Machines
Automatic Machines
ac
80 rms
100 rms
dc > 10% Ripple Voltage
80 rms
100 average
dc < 10% Ripple Voltage
100 average
100 average
(2) When welding and cutting processes
						require values of open circuit voltages higher than 100, insulation or other
						means shall be provided to prevent the operator from making accidental contact
						with the high voltage.
(3)
						Equipment working through resistors from DC trolley voltages of 250 to 600
						volts shall have a protective device for automatically disconnecting the power
						during arc off periods.
(4)
						Automatic control devices for reducing no-load voltage below 50 volts shall be
						provided where AC welding is to be done under wet conditions that could provide
						a shock hazard.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › ARC WELDING AND CUTTING › Section R. 408.11273 - Design of arc welding machines

Current through Vol. 24-12, July 15, 2024
Rule 1273.
(1)
						A controller integrally mounted in an electric motor driven welder shall have
						the capacity for carrying rated motor current and shall be capable of making
						and interrupting stalled rotor current of the motor.
(2) Control apparatus shall be enclosed
						except for the operating wheels, levers, or handles. The handles and wheels
						shall be large enough to be grasped by a gloved hand.
(3) Input power terminals, tap change
						devices, and live metal parts connected to input circuits shall be completely
						enclosed and accessible only by use of tools.
(4) Welding lead terminals shall be protected
						from accidental electrical contact by personnel or metal objects. If a welding
						lead terminal normally used for connection to the work is connected to a
						grounded enclosure, it shall be done by a conductor at least 2 sizes smaller
						than the grounding conductor and it shall be so marked.
(5) Portable control devices, such as push
						buttons, shall not be connected to an AC circuit of more than 120 volts.
						Exposed metal parts of a portable control device operating above 50 volts shall
						be grounded.
(6) Auto transformers
						or AC reactors shall not be used to draw welding current directly from any AC
						power source having a voltage of more than 80 volts.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › ARC WELDING AND CUTTING › Section R. 408.11274 - Installation

Current through Vol. 24-12, July 15, 2024
Rule 1274.
(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 by a grounded metal floor, platen, connection to a grounded
						building frame, or by a direct ground to the machine. A wire used for grounding
						a work piece shall be capable of carrying the full welding current.
(3) A conduit containing an electrical
						conductor shall not be used for completing a work-lead circuit.
(4) A pipeline in service shall not be used
						as a permanent part of a work-lead circuit, but may be used during
						construction, extension, or repair if current is not carried through threaded
						joints, flanged bolted joints, or caulked joints and if special precautions are
						used to avoid sparking at connection of the work-lead cable.
(5) Chains, wire ropes, cranes, hoists, and
						elevators used for carrying loads shall not be used to carry a welding
						current.
(6) A welding cable shall
						be protected against damage, entanglement, or contact with power supply or high
						tension wires.
(7) A welding
						machine not provided with a controller or disconnect switch as an integral part
						shall have a controller or disconnect switch with overload protection provided.
						A disconnect switch with overload protection or overload disconnect protection
						or equivalent shall be provided for each outlet used by a portable welding
						machine.
(8) The rated current
						carrying capacity of the supply conductors for individual machines shall be not
						less than the rated primary current for the welding machine. The rated current
						carrying capacity of conductors for a group of welding machines may be less
						than the sum of the rated primary currents of the welding machines supplied.
						The conductor rating shall be determined in each case according to the machine
						loading based on the use to be made of each welding machine and the allowance
						permissible if all the machines supplied by the conductor will not be in use at
						the same time.
(9) Where a welding
						machine is working sufficiently close to another machine so that a welding
						operator is likely to touch the exposed parts of more than 1 electrode holder
						simultaneously, the machine shall be connected so as to minimize shock hazard
						as follows:
(a) DC machines shall be
						connected with the same polarity.
(b) AC machines shall be connected to the
						same phase of the supply circuit and with the same instantaneous
						polarity.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › ARC WELDING AND CUTTING › Section R. 408.11275 - Operation

Current through Vol. 24-12, July 15, 2024
Rule 1275.
(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 turned off when not in use.
(3) Electrodes shall be retracted or removed
						when not in use. Electrode holders not in use shall be placed so that they
						cannot make electrical contact with an employee, fuel or gas tanks, or
						conducting objects.
(4) A welder
						shall not let live electrodes or holders touch his or her bare skin or damp
						clothing. When arc welding is performed in wet conditions or under a condition
						of high humidity, the welder shall be protected against electric
						shock.
(5) Electrode holders shall
						not be cooled by immersion in water.
(6) Welding shall not be permitted where
						fumes of chlorinated hydrocarbons are present unless specific ventilation and
						personal protective equipment is provided as specified by the Michigan
						Occupational Safety and Health Administration (MIOSHA) standards.
(7) Before starting an arc welding operation,
						the welder shall do all of the following:
(a)
						Make sure the work lead is secured to the work.
(b) Make sure the magnetic work clamps are
						free of spatter on the contact surfaces.
(c) Spread out the welding cable, if
						necessary, to prevent overheating and damage.
(d) Make sure grounding connections are
						secured to a good ground.
(e) Make
						sure the required switching equipment for shutting down the machine has been
						provided.
Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 12 - WELDING AND CUTTING › ARC WELDING AND CUTTING › Section R. 408.11276 - Maintenance of arc welding machines

Current through Vol. 24-12, July 15, 2024
Rule 1276.
(1)
						Spliced welding cable shall not be used within 10 feet (3.05 m) 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 by a knowledgeable employee or outside
						service.
(3) Cut insulation on work
						and lead cable or exposed bare conductors of an arc welding machine shall be
						protected by electrical tape and made watertight or the conductor shall be
						replaced. Splices shall be made by insulated welded joints or pressure
						connectors.
(4) An arc welding
						machine which has become wet shall be thoroughly dried and tested before
						use.