8/8/2019 You Know Welding Cutting Safety Etc
1/136
You know welding cutting
safety etc.
Or should it read justSAFETY ETC. BEFORE WE STARTW hat never seen a girl with a welders
mask on before!
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
2/136
Welding On top of
safety what are we talking
about in theU S A
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
3/136
G eneral Requirements
Fire Prevention and ProtectionBasic PrecautionsFire hazards If the object to be welded or cut cannot readily be
moved, all movable fire hazards in the vicinityshall be taken to a safe place .
G uards If the object to be welded or cut cannot be moved
and if all the fire hazards cannot be removed, thenguards shall be used to confine the heat, sparks,and slag, and to protect the immovable firehazards.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
4/136
S ubpart Q
1910.251 - Definitions1910.252 - General Requirements
1910.253 - Oxygen-fuel gaswelding and cutting
1910.254 - Arc welding and cutting
1910.255 - Resistance welding
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
5/136
Incorporated by reference as
specified in S ec. 1910.6The following material is available for purchase fromthe American Welding Society (AWS), 550 NW,LeJeune Road, P.O. Box 351040, Miami FL 33135 :
AWS A3.0 (1969) Terms and Definitions, IBR approvedfor 1910.251(c).
AWS A6.1 (1966) Recommended S afe Practices for G asS hielded Arc Welding, IBR approved for
1910.254(d)(1).AWS B3.0-41 S tandard Qualification Procedure, IBRapproved for 1910.67(c)(5)(i).
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
6/136
Incorporated by reference as
specified inS
ec. 1910.6AWS D1.0-1966 Code for Welding in BuildingConstruction, IBR approved for 1910.27(b)(6).
AWS D2.0-69 S pecifications for Welding Highway and
Railway Bridges, IBR approved for 1910.67(c)(5)(iv).AWS D8.4-61 Recommended Practices for AutomotiveWelding Design, IBR approved for 1910.67(c)(5)(ii).
AWS D10.9-69 S tandard Qualification of Welding
Procedures and Welders for Piping and Tubing, IBRapproved for 1910.67(c)(5)(iii).
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
7/136
O ther Related OS HA S tandards
1910.102 - Acetylene1910.104 - Ox ygen
1926.350 - G as welding and cutting1926.351 - Arc welding and cutting1926.352 - Fire prevention1926.353 - Ventilation and protection in welding,cutting, and heating1926.354 - Welding, cutting, and heating in wayof preservative coatings
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
8/136
N FPA S tandardsN FPA 10 - Portable Fire E x tinguishersN FPA 50 - Bulk Ox ygen S ystems at Consumer S itesN FPA 51 - Ox ygen- Fuel G as S ystems for WeldingN FPA 51A - Acetylene Cylinder Charging PlantsN FPA 51B - Fire Prevention for Cutting and WeldingN FPA 70 - N ational Electric CodeN FPA 306 - Control of G as Hazards on VesselsN FPA 327 - Cleaning or S afeguarding of S mall Tanksand Containers
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
9/136
Definitions
Welder" and "welding operator" mean anyoperator of electric or gas welding andcutting equipment.
"Approved" means listed or approved by a
nationally recognized testing laboratory.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
10/136
G eneral Requirements
Fire Prevention and ProtectionBasic Precautions
Restrictions If the requirements stated in fire hazards
and guards sections cannot be followedthen welding and cutting shall not be
performed.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
11/136
G eneral RequirementsFire Prevention and Protection
S pecial Precautions
S uitable firee x tinguishers shall bemaintained in a state of readiness
Fire Watchers arerequired whenever welding and cutting isperformed in locationswhere other than aminor fire might develop
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
12/136
G eneral Requirements
Fire Prevention and ProtectionS pecial PrecautionsFire Watchers are also required when: Appreciable combustible materials, in
building construction or contents, are closer than 35 feet to the point of operation
Appreciable combustible materials more than35 feet away but are easily ignited by sparks
A fire watch shall be maintained for at leastone half hour after the completion of weldingor cutting operations
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
13/136
G eneral Requirements
Fire Prevention and ProtectionS pecial PrecautionsCutting or welding shall not be permitted inthe following situations: In areas not authorized by management In sprinkled buildings when protection is
impaired
In the presence of e x plosive atmospheres
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
14/136
G eneral RequirementsFire Prevention and Protection
W elding or cutting containers Will be cleaned so thoroughly as to make
absolutely certain that there are no flammablematerials present or any substances such asgreases, tars, acids, or other materials whichwhen subjected to heat, might produce flammableor to x ic vapors. have been
Any pipe lines or connections to the drumor vessel shall be disconnected or blanked
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
15/136
G eneral RequirementsFire Prevention and Protection
Confined spaces .
When arc welding is to be suspended for any substantial period of time, such asduring lunch or overnight, all electrodesshall be removed from the holders and theholders carefully located so that accidentalcontact cannot occur and the machine bedisconnected from the power source
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
16/136
G eneral RequirementsFire Prevention and Protection
Confined spaces In order to eliminate the possibility of gas escaping
through leaks or improperly closed valves, whengas welding or cutting, the torch valves shall beclosed and the gas supply to the torch positivelyshut off at some point outside the confined areawhenever the torch is not to be used for a
substantial period of time, such as during lunchhour or overnight . Where practicable, the torch and hose shall also
be removed from the confined space
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
17/136
8/8/2019 You Know Welding Cutting Safety Etc
18/136
Personnel Protection
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
19/136
G eneral RequirementsProtection of Personnel
E ye protection Helmets or hand shields shall be used during all
arc welding or arc cutting operations, ex
cludingsubmerged arc welding. Helpers or attendantsshall be provided with proper eye protection.
G oggles or other suitable eye protection shall beused during all gas welding or o x ygen cutting
operations. S pectacles without side shields, withsuitable filter lenses are permitted for use duringgas welding operations on light work, for torchbrazing or for inspection.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
20/136
G eneral Requirements
Protection of PersonnelW elding Operation | Shade No .
Shielded metal-arc welding -
1/16 -, 3/32 -, 1/8 -, 5/32 -inch electrodes 10Gas-shielded arc welding (nonferrous) -
1/16 -, 3/32 -, 1/8 -, 5/32 -inch electrodes 11
Gas-shielded arc welding (ferrous) -
1/16 -, 3/32 -, 1/8 -, 5/32 -inch electrodes 12
Soldering 2
T orch brazing 3 or 4
H eavy cutting, 6 inches and over 5 or 6
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
21/136
G eneral Requirements
Protection of PersonnelAirline respirators In circumstances for
which it is impossibleto provide suchventilation
SCBA
In IDL H Atmospheres
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
22/136
G eneral RequirementsConfined S paces
Confined space means a relatively small or restricted space such as a tank, boiler, pressurevessel, or small compartment of a ship
Ventilation is a prerequisite to work inconfined spaces
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
23/136
G eneral RequirementsConfined S paces
Securing cylinders and machinery When welding or cutting is being performed in
any confined spaces the gas cylinders andwelding machines shall be left on the outside.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
24/136
G eneral RequirementsConfined S paces
Lifelines Where a welder must enter a confined space
through a manhole or other small opening,means shall be provided for quickly removinghim in case of emergency.
An attendant with a pre-planned rescueprocedure shall be stationed outside to observethe welder at all times and be capable of puttingrescue operations into effect .
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
25/136
8/8/2019 You Know Welding Cutting Safety Etc
26/136
G eneral RequirementsHealth Protection and Ventilation
Mechanical ventilation is required whenwelding or cutting is done with materials inthis section
Materials such as fluorine compounds,zinc, lead, beryllium, cadmium, mercury,
cleaning compounds and stainless steelare particularly hazardous and specificcontrol requirements
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
27/136
Ox ygen-fuel gas weldingand cutting 1910.253
Flammable mi x ture
Mix tures of fuel gases and air or o x ygen
may be e x plosive and shall be guardedagainst.
Cutting torch temperatures e x ceed 5000degrees F
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
28/136
Ox ygen-fuel gas weldingand cutting 1910.253
M aximum pressure
Under no condition shall acetylene be
generated, piped or utilized at a pressurein e x cess of 15 psig (103 kPa gaugepressure) or 30 psia (206 kPa absolute)
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
29/136
Ox ygen-fuel gas weldingand cutting 1910.253
ApparatusO nly approved
apparatus such astorches, regulators or pressure-reducing valves, acetylenegenerators, and manifolds shall be used.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
30/136
Ox ygen-fuel gas welding
and cutting 1910.253Cylinders and containersAll portable cylinders usedfor the storage andshipment of compressedgases shall be constructedand maintained inaccordance with theregulations of the U. S .Department of Transportation, 49 CFRParts 171-179.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
31/136
Ox ygen-fuel gas welding
and cutting 1910.253Design of AcetyleneCylinder
Filled with CalciumSilicate
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
32/136
Ox ygen-fuel gas weldingand cutting 1910.253
Cylinders and containersCompressed gas cylinders shall be legiblymarked, for the purpose of identifying the gascontent, with either the chemical or the tradename of the gas.S uch marking shall be by means of stenciling,
stamping, or labeling, and shall not be readilyremovable. Whenever practical, the markingshall be located on the shoulder of the cylinder.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
33/136
8/8/2019 You Know Welding Cutting Safety Etc
34/136
Ox ygen-fuel gas weldingand cutting 1910.253
Storage of cylinders-generalAssigned storage spaces shall be located wherecylinders will not be knocked over or damagedby passing or falling objects, or subject totampering by unauthorized persons.
Cylinders shall not be kept in unventilated
enclosures such as lockers and cupboards.Empty cylinders shall have their valves closed.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
35/136
Ox ygen-fuel gas welding
and cutting 1910.253
Oxygen and acetylene cylinders instorage must be separated by 20 feet
Or a 1/2 hour fire wall ( 5 ft.)
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
36/136
Ox ygen-fuel gas weldingand cutting 1910.253
Valve protection caps, where cylinder isdesigned to accept a cap, shall always bein place, hand-tight, e x cept when cylindersare in use or connected for use.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
37/136
Ox ygen-fuel gas weldingand cutting 1910.253
Fuel-gas cylinder storage .
Inside a building, cylinders, e x cept those inactual use or attached ready for use, shall belimited to a total gas capacity of 2,000 cubic feet(56 m(3)) or 300 pounds (135.9 kg) of liquefiedpetroleum gas.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
38/136
Ox ygen-fuel gas weldingand cutting 1910.253
Fuel-gas cylinder storage .For storage in e x cess of 2,000 cubic feet (56m(3)) total gas capacity of cylinders or 300pounds (135.9 kg) of liquefied petroleum gas, aseparate room or compartment shall beprovided, or cylinders shall be kept outside or ina special building.
S pecial buildings, rooms or compartments shallhave no open flame for heating or lighting andshall be well ventilated.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
39/136
Ox ygen-fuel gas weldingand cutting 1910.253
Oxygen storageOx ygen cylinders shall not be stored near
highly combustible material, especially oiland grease.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
40/136
Ox ygen-fuel gas weldingand cutting 1910.253
Operating procedures .
Cylinders, cylinder valves, couplings,
regulators, hose, and apparatus shall bekept free from oily or greasy substances.Ox ygen cylinders or apparatus shall not behandled with oily hands or gloves.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
41/136
Ox ygen-fuel gas weldingand cutting 1910.253
Operating proceduresWhen transporting cylinders by a crane or derrick, a cradle, boat, or suitable platformshall be used. S lings or electric magnets shall not be used
for this purpose.
Valve-protection caps, where cylinder isdesigned to accept a cap, shall always be inplace.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
42/136
Ox ygen-fuel gas weldingand cutting 1910.253
Valve-protection caps shall not be used for lifting cylinders from one vertical positionto another. Bars shall not be used under valves or valve-
protection caps to pry cylinders loose whenfrozen to the ground or otherwise fi x ed; theuse of warm (not boiling) water is
recommended. Valve-protection caps are designed to protect
cylinder valves from damage.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
43/136
Ox ygen-fuel gas weldingand cutting 1910.253
Unless cylinders are secured on a specialtruck, regulators shall be removed andvalve-protection caps, when provided for,shall be put in place before cylinders aremoved.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
44/136
Ox ygen-fuel gas weldingand cutting 1910.253
Cylinders not having fi x ed hand wheelsshall have keys, handles, or nonadjustablewrenches on valve stems while thesecylinders are in service. In multiple cylinder installations only one key
or handle is required for each manifold.
Cylinder valves shall be closed beforemoving cylinders.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
45/136
Ox ygen-fuel gas weldingand cutting 1910.253
Cylinder valves shall be closed when workis finished.
Valves of empty cylinders shall be closed.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
46/136
Ox ygen-fuel gas weldingand cutting 1910.253
Cylinders shall be kept far enough awayfrom the actual welding or cuttingoperation so that sparks, hot slag, or flamewill not reach them, or fire-resistant shieldsshall be provided.Cylinders shall not be placed where theymight become part of an electric circuit.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
47/136
Ox ygen-fuel gas weldingand cutting 1910.253
Cylinders shall be kept away from radiators,piping systems, layout tables, etc., that may beused for grounding electric circuits such as for
arc welding machines.Any practice such as the tapping of an electrodeagainst a cylinder to strike an arc shall beprohibited.
Cylinders shall never be used as rollers or supports, whether full or empty.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
48/136
Ox ygen-fuel gas weldingand cutting 1910.253
Before connecting the regulator to thecylinder valve, the valve shall be openedslightly for an instant and then closed.
Always stand to one side of the outletwhen opening the cylinder valve.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
49/136
Ox ygen-fuel gas weldingand cutting 1910.253
Protective equipment, hose, andregulators
Equipment shall be installed and used onlyin the service for which it is approved andas recommended by the manufacturer.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
50/136
Ox ygen-fuel gas weldingand cutting 1910.253
Piping protective equipment .
The fuel-gas and o x ygen piping systems,including portable outlet headers shallincorporate the protective equipment
Backflow of o x ygen into the fuel-gas supplysystem
Passage of a flash back into the fuel-gas supplysystem
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
51/136
Ox ygen-fuel gas weldingand cutting 1910.253
H ose and hose connections .Hose for o x y-fuel gas service shall comply withthe S pecification for Rubber Welding Hose,
1958, Compressed G as Association and Rubber Manufacturers AssociationWhen parallel lengths of o x ygen and acetylene
hose are taped together for convenience and to
prevent tangling, not more than 4 inches (10.2cm) out of 12 inches (30.5 cm) shall be coveredby tape.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
52/136
Ox ygen-fuel gas weldingand cutting 1910.253
H ose and hose connectionsHose connections shall comply with the S tandard HoseConnection S pecifications, 1957, Compressed G as
Association.Hose connections shall be clamped or otherwisesecurely fastened in a manner that will withstand, withoutleakage, twice the pressure to which they are normallysubjected in service
Hose showing leaks, burns, worn places, or other defects rendering it unfit for service shall be repaired or replaced.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
53/136
Ox ygen-fuel gas weldingand cutting 1910.253
Pressure-reducing regulators .
Pressure-reducing regulatorsshall be used only for the gasand pressures for which theyare intended.
When regulators or parts of regulators, including
gages, need repair, the work shall be performedby skilled mechanics who have been properlyinstructed.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
54/136
8/8/2019 You Know Welding Cutting Safety Etc
55/136
Arc welding and cutting
1910.254In the arc weldingprocess, an electriccurrent passing throughthe welding rod or electrode is forced to
jump or arc across agap. The resulting arcproduces the intenseheat necessary for thearc welding and cuttingoperation.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
56/136
Arc welding and cutting
1910.254Arc welding is used tofabricate nearly all
types of carbon andalloy steels , thecommon nonferrousmetals, and isindispensable in therepair and reclamationof metallic machineparts
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
57/136
Arc welding and cutting1910.254
E quipment selection .
Welding equipment shall be chosen for
safe application to the work to be doneInstallation .
Welding equipment shall be installed
safely
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
58/136
Arc welding and cutting1910.254
Instruction .
Workmen designated to operate arc
welding equipment shall have beenproperly instructed and qualified to operatesuch equipment
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
59/136
8/8/2019 You Know Welding Cutting Safety Etc
60/136
Arc welding and cutting
1910.254Terminals for welding leads
should be protectedfrom accidentalelectrical contact bypersonnel or by
metal objects i.e.,vehicles, cranehooks, etc.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
61/136
Arc welding and cutting1910.254
Workmen assigned to operate or maintainarc welding equipment shall be acquaintedwith the requirements of this section andwith 1910.252If doing gas-shielded arc welding, alsoRecommended S afe Practices for G as-S hielded Arc Welding, A6.1-1966,
American Welding S ociety
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
62/136
Arc welding and cutting1910.254
Electrode holders. Electrode holders when not in use shall be so
placed that they cannot make electrical
contact with persons, conducting objects, fuelor compressed gas tanks.
Electric shock. Cables with splices within 10 feet (3 m) of the
holder shall not be used. The welder shouldnot coil or loop welding electrode cablearound parts of his body.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
63/136
Resistance Welding1910.255
InstallationT hermal protection
Personnel
Guarding
Spot and seam weldingmachines
Voltage
Capacitor welding
Interlocks
Guarding
Shields
Foot switches
Stop buttons
Safety pins
Grounding
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
64/136
O ther Information
American Welding S ociety www.aws.orgN
ational WeldingS
upply Association www.welderssupply.com
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
65/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders V alve protection caps shall be in place and
secured
When cylinders are hoisted, they shall be
secured on a cradle, slingboard, or pallet.They shall not be hoisted or transported bymeans of magnets or choker slings
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
66/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders Cylinders shall be moved by tilting and rolling
them on their bottom edges. They shall not beintentionally dropped, struck, or permitted tostrike each other violently
When cylinders are transported by poweredvehicles, they shall be secured in a verticalposition
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
67/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders Valve protection caps shall not be used for
lifting cylinders from one vertical position toanother
Bars shall not be used under valves or valveprotection caps to pry cylinders loose when
frozen Warm, not boiling, water shall be used to thaw
cylinders loose
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
68/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders )(6) Unless cylinders are firmly secured on a
special carrier intended for this purpose,regulators shall be removed and valveprotection caps put in place before cylindersare moved
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
69/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders )( A suitable cylinder truck, chain, or other
steadying device shall be used to keepcylinders from being knocked over while inuse
When work is finished, when cylinders areempty, or when cylinders are moved at anytime, the cylinder valve shall be closed 6)
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
70/136
8/8/2019 You Know Welding Cutting Safety Etc
71/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders )( Ox ygen cylinders in storage shall be
separated from fuel-gas cylinders or combustible materials (especially oil or grease), a minimum distance of 20 feet (6.1m) or by a noncombustible barrier at least 5feet (1.5 m) high having a fire-resistancerating of at least one-half hour.
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
72/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders )( Inside of buildings, cylinders shall be stored in
a well-protected, well-ventilated, dry location,at least 20 feet (6.1 m) from highlycombustible materials such as oil or e x celsior
Cylinders should be stored in definitelyassigned places away from elevators, stairs,or gangways
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
73/136
1926.350G as welding and cutting
T ransporting, moving, and storing compressedgas cylinders )( Assigned storage places shall be located
where cylinders will not be knocked over or damaged by passing or falling objects, or subject to tampering by unauthorized persons
Cylinders shall not be kept in unventilatedenclosures such as lockers and cupboards
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
74/136
8/8/2019 You Know Welding Cutting Safety Etc
75/136
1926.350G as welding and cutting
Placing Cylinders Cylinders shall be placed where they cannot
become part of an electrical circuit. Electrodesshall not be struck against a cylinder to strikean arc
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
76/136
1926.350G as welding and cutting
Placing Cylinders Fuel gas cylinders shall be placed with valve
end up whenever they are in use
They shall not be placed in a location wherethey would be subject to open flame, hot
metal, or other sources of artificial heat
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
77/136
1926.350G as welding and cutting
Placing Cylinders Cylinders containing o x ygen or acetylene or
other fuel gas shall not be taken into confinedspaces (c)
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
78/136
1926.350G as welding and cutting
T reatment of cylinders Cylinders, whether full or empty, shall not be
used as rollers or supports
N o person other than the gas supplier shallattempt to mi x gases in a cylinder
N o damaged or defective cylinder shall beused d )
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
79/136
1926.350G as welding and cutting
U se of fuel gas Before a regulator to a cylinder valve is
connected, the valve shall be opened slightlyand closed immediately
This action is generally termed "cracking" and
is intended to clear the valve of dust or dirtthat might otherwise enter the regulator (d)(2)
P bar Y Safety Consultants Alberta Canada
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
80/136
1926.350G as welding and cutting
Use of fu el ga s
The cylinder valve shall always be openedslowly to prevent damage to the regulator
For quick closing, valves on fuel gas cylindersshall not be opened more than 1 1/2 turns
P bar Y Safety Consultants Alberta Canada
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
81/136
1926.350G as welding and cutting
Use of fu el ga s
When a special wrench is required, it shall beleft in position on the stem of the valve while
the cylinder is in use so that the fuel gas flowcan be shut off quickly in case of anemergency
In the case of manifolded or coupledcylinders, at least one such wrench shallalways be available for immediate use
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
82/136
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
83/136
1926.350G as welding and cutting
H ose Fuel gas hose and o x ygen hose shall be
easily distinguishable from each other
The contrast may be made by different colorsor by surface characteristics readilydistinguishable by the sense of touch
Ox ygen and fuel gas hoses shall not beinterchangeable
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
84/136
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
85/136
1926.350G as welding and cutting
H ose All hose in use, carrying acetylene, o x ygen,
natural or manufactured fuel gas, or any gasor substance which may ignite or enter intocombustion, or be in any way harmful toemployees, shall be inspected at thebeginning of each working shift
Defective hose shall be removed from service
P bar Y Safety Consultants Alberta Canada
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
86/136
1926.350G as welding and cutting
H ose Hose couplings shall be of the type that
cannot be unlocked or disconnected bymeans of a straight pull without rotary motion
Bo x es used for the storage of gas hose shallbe ventilated
Hoses, cables, and other equipment shall bekept clear of passageways, ladders and stairs
P bar Y Safety Consultants Alberta Canada
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
87/136
1926.350G as welding and cutting
Torches Clogged torch tip openings shall be cleaned
with suitable cleaning wires, drills, or other
devices designed for such purpose
Torches in use shall be inspected at thebeginning of each working shift for leakingshutoff valves, hose couplings, and tipconnections. Defective torches shall not beused
P bar Y Safety Consultants Alberta Canada
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
88/136
1926.350G as welding and cutting
Torches Torches shall be lighted by friction lighters or
other approved devices, and not by matchesor from hot work
P bar Y Safety Consultants Alberta Canada
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
89/136
1926.350G as welding and cutting
Regulators and gauges Ox ygen and fuel gas pressure regulators,
including their related gauges, shall be inproper working order while in use )
P bar Y Safety Consultants Alberta Canada
1926 350
8/8/2019 You Know Welding Cutting Safety Etc
90/136
1926.350G as welding and cutting
Oil and grease hazards Ox ygen cylinders and fittings shall be kept
away from oil or grease
Cylinders, cylinder caps and valves,couplings, regulators, hose, and apparatus
shall be kept free from oil or greasysubstances and shall not be handled with oilyhands or gloves
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
91/136
1926.351 Arc welding and cutting
M anual electrode holders O nly manual electrode holders which are
specifically designed for arc welding andcutting, and are of a capacity capable of safely handling the ma x imum rated currentrequired by the electrodes, shall be used
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
92/136
1926.351 Arc welding and cutting
M anual electrode holders Any current-carrying parts passing through
the portion of the holder which the arc welder or cutter grips in his hand, and the outer surfaces of the jaws of the holder, shall befully insulated against the ma x imum voltageencountered to ground (b)
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
93/136
1926.351 Arc welding and cutting
W elding cables and connectors .
All arc welding and cutting cables shall be of the completely insulated, fle x ible type,capable of handling the ma x imum currentrequirements of the work in progress, takinginto account the duty cycle under which thearc welder or cutter is working
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
94/136
1926.351 Arc welding and cutting
W elding cables and connectors . O nly cable free from repair or splices for a
minimum distance of 10 feet from the cable
end to which the electrode holder isconnected shall be used
E x cept that cables with standard insulated
connectors or with splices whose insulatingquality is equal to that of the cable arepermitted )
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
95/136
1926.351 Arc welding and cutting
W elding cables and connectors When it becomes necessary to connect or
splice lengths of cable one to another,substantial insulated connectors of a capacity
If connections are effected by means of cablelugs, they shall be securely fastened together to give good electrical contact
E x posed metal parts of the lugs shall becompletely insulated
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
96/136
1926.351 Arc welding and cutting
Ground returns and machine grounding A ground return cable shall have a safe
current carrying capacity equal to or
ex
ceeding the specified max
imum outputcapacity of the arc welding or cutting unitwhich it services
When a single ground return cable servicesmore than one unit, its safe current-carryingcapacity
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
97/136
1926.351 Arc welding and cutting
Ground returns and machine grounding Pipelines containing gases or flammable
liquids, or conduits containing electricalcircuits, shall not be used as a groundreturn (c )(3)
When a structure or pipeline is employed as aground return circuit, it shall be determinedthat the required electrical contact e x ists at all
joints (c)(4)
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
98/136
1926.351 Arc welding and cutting
Ground returns and machine grounding All ground connections shall be inspected to
ensure that they are mechanically strong andelectrically adequate for the required current
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
99/136
1926.351 Arc welding and cutting
Operation instructions Employers shall instruct employees in the
safe means of arc welding and cutting
When electrode holders are to be leftunattended, the electrodes shall be removedand the holders shall be so placed or protected that they cannot make electricalcontact with employees or conducting objects
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
100/136
1926.351 Arc welding and cutting
Operating instructions Hot electrode holders shall not be dipped in
water
To do so may e x pose the arc welder or cutter to electric shock
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
101/136
1926.351 Arc welding and cutting
Operating instructions When the arc welder or cutter has occasion to
leave his work or to stop work for anyappreciable length of time, or when the arcwelding or cutting machine is to be moved,the power supply switch to the equipmentshall be opened
Any faulty or defective equipment shall bereported to the supervisor
P bar Y Safety Consultants Alberta Canada
1926 351
8/8/2019 You Know Welding Cutting Safety Etc
102/136
1926.351 Arc welding and cutting
Shielding Whenever practicable, all arc welding and
cutting operations shall be shielded bynoncombustible or flameproof screens whichwill protect employees and other personsworking in the vicinity from the direct rays of the arc
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
103/136
1926 352
8/8/2019 You Know Welding Cutting Safety Etc
104/136
1926.352Fire Prevention
If the object to be welded, cut, or heatedcannot be moved and if all the fire hazardscannot be removed, positive means shallbe taken to confine the heat, sparks, andslag, and to protect the immovable firehazards from them )
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
105/136
1926 352
8/8/2019 You Know Welding Cutting Safety Etc
106/136
1926.352Fire Prevention
S uitable fire e x tinguishing equipment shallbe immediately available in the work areaand shall be maintained in a state of readiness for instant use
P bar Y Safety Consultants Alberta Canada
1926 352
8/8/2019 You Know Welding Cutting Safety Etc
107/136
1926.352Fire Prevention
When welding, cutting, or heating isperformed on walls, floors, and ceilings,since direct penetration of sparks or heattransfer may introduce a fire hazard to anadjacent area, the same precautions shallbe taken on the opposite side as are taken
on the side on which the welding is beingperformed
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
108/136
1926.352
8/8/2019 You Know Welding Cutting Safety Etc
109/136
1926.352Fire Prevention
For the elimination of possible fire in enclosedspaces as a result of gas escaping throughleaking or improperly closed torch valves, the
gas supply to the torch shall be positively shutoff at some point outside the enclosed spacewhenever the torch is not to be used or whenever the torch is left unattended for a
substantial period of time, such as during thelunch period
P bar Y Safety Consultants Alberta Canada
1926.352
8/8/2019 You Know Welding Cutting Safety Etc
110/136
1926.352Fire Prevention
O vernight and at the change of shifts, thetorch and hose shall be removed from theconfined spaceO pen end fuel gas and o x ygen hoses shallbe immediately removed from enclosedspaces when they are disconnected from
the torch or other gas-consuming device
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
111/136
1926.353Ventilation & Protection
M echanical Ventilation Mechanical ventilation shall consist of either
general mechanical ventilation systems or
local e x haust systems (a )(2) G eneral mechanical ventilation shall be of
sufficient capacity and so arranged as toproduce the number of air changes necessaryto maintain welding fumes and smoke withinsafe limits
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
112/136
1926.353Ventilation & Protection
M echanical Ventilation Local e x haust ventilation shall consist of
freely movable hoods intended to be placed
by the welder or burner as close aspracticable to the work
This system shall be of sufficient capacity andso arranged as to remove fumes and smokeat the source and keep the concentration of them in the breathing zone within safe limits
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
113/136
9 6.353Ventilation & Protection
M echanical Ventilation Contaminated air e x hausted from a working
space shall be discharged into the open air or
otherwise clear of the source of intake air (5)
All air replacing that withdrawn shall be clean
and respirable
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
114/136
Ventilation & ProtectionM echanical Ventilation Ox ygen shall not be used for ventilation
purposes, comfort cooling, blowing dust from
clothing, or for cleaning the work area (b)
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
115/136
Ventilation & ProtectionW elding, cutting, and heating in confinedspaces Either general mechanical or local e x haust
ventilation shall be provided whenever welding, cutting, or heating is performed in aconfined space
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
116/136
Ventilation & Protection
W elding, cutting, and heating in confined spaces When sufficient ventilation cannot be obtained
without blocking the means of access,employees in the confined space shall beprotected by air line respirators
An employee on the outside of such a confined
space shall be assigned to maintaincommunication with those working within it andto aid them in an emergency
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
117/136
Ventilation & ProtectionW elding, cutting, and heating in confinedspaces "Lifelines.
Where a welder must enter a confined spacethrough a manhole or other small opening,
means shall be provided for quickly removinghim in case of emergency
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
118/136
Ventilation & ProtectionW elding, cutting, and heating in confinedspaces An attendant with a pre-planned rescue
procedure shall be stationed outside toobserve the welder at all times and becapable of putting rescue operations intoeffect (c)
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
119/136
Ventilation & ProtectionW elding, cutting, or heating of metals of toxicsignificance (c)(1) Welding, cutting, or heating in any enclosed
spaces involving the metals specified in thissubparagraph shall be performed with either general mechanical or local e x haustventilation )(1)(i)
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
120/136
Ventilation & ProtectionW elding, cutting, or heating of metals of toxicsignificance (c)(1) Zinc-bearing base or filler metals or metals
coated with zinc-bearing materials Lead base metals
Cadmium-bearing filler materials
Chromium-bearing metals or metals coatedwith chromium-bearing materials c)(2)
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
121/136
Ventilation & ProtectionW elding, cutting, or heating of metals of toxicsignificance (c)( Metals containing lead, other than as an
impurity, or metals coated with lead-bearingmaterials ( c)(2)(ii)
Cadmium-bearing or cadmium-coated basemetals (c)(2)(iii)
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
122/136
Ventilation & ProtectionW elding, cutting, or heating of metals of toxicsignificance (c)( Metals coated with mercury-bearing metals
Beryllium-containing base or filler metals.Because of its high to x icity, work involving
beryllium shall be done with both locale x haust ventilation and air line respirators
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
123/136
Ventilation & ProtectionW elding, cutting, or heating of metals of toxicsignificance ( Employees performing such operations in the
open air shall be protected by filter-typerespirators
E x cept that employees performing suchoperations on beryllium-containing base or filler metals shall be protected by air linerespirators
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
124/136
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
125/136
Ventilation & Protection
Inert-gas metal-arc welding S ince the inert-gas metal-arc welding process
involves the production of ultra-violet radiationof intensities of 5 to 30 times that producedduring shielded metal-arc welding, thedecomposition of chlorinated solvents byultraviolet rays, and the liberation of to x ic fumes
and gases, employees shall not be permitted toengage in, or be e x posed to the process untilspecial precautions have been taken
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
126/136
Ventilation & ProtectionInert-gas metal-arc welding The use of chlorinated solvents shall be kept
at least 200 feet, unless shielded, from the
e x posed arc, and surfaces prepared withchlorinated solvents shall be thoroughly drybefore welding is permitted on such surfaces
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
127/136
Ventilation & Protection
Inert-gas metal-arc welding Employees in the area not protected from the arc
by screening shall be protected by filter lenses
When two or more welders are e x posed to eachother's arc, filter lens goggles of a suitable type
Hand shields to protect the welder againstflashes and radiant energy shall be used wheneither the helmet is lifted or the shield is removed
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
128/136
Ventilation & Protection
Inert-gas metal-arc welding Welders and other employees who are
e x posed to radiation shall be suitablyprotected so that the skin is coveredcompletely to prevent burns and other damage by ultraviolet rays
Welding helmets and hand shields shall befree of leaks and openings, and free of highlyreflective surfaces
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
129/136
Ventilation & Protection
Inert-gas metal-arc welding When inert-gas metal-arc welding is being
performed on stainless steel, requirementsshall be met to protect against dangerousconcentrations of nitrogen dio x ide
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
130/136
Ventilation & Protection
General welding, cutting and heating Welding, cutting, and heating, not involving the
previous materials, may normally be donewithout mechanical ventilation or respiratoryprotective equipment, but where, because of unusual physical or atmospheric conditions, an
unsafe accumulation of contaminants ex
ists,suitable mechanical ventilation or respiratoryprotective equipment shall be provided
P bar Y Safety Consultants Alberta Canada
1926.353
8/8/2019 You Know Welding Cutting Safety Etc
131/136
Ventilation & Protection
General welding, cutting and heating Employees performing any type of welding,
cutting, or heating shall be protected bysuitable eye protective equipment
P bar Y Safety Consultants Alberta Canada
1926.354
8/8/2019 You Know Welding Cutting Safety Etc
132/136
Preservative Coatings
Before welding, cutting, or heating iscommenced on any surface covered by a
preservative coating whose flammability isnot known, a test shall be made by acompetent person to determine itsflammability
Preservative coatings shall be considered tobe highly flammable when scrapings burnwith e x treme rapidity (b)
P bar Y Safety Consultants Alberta Canada
1926.354
8/8/2019 You Know Welding Cutting Safety Etc
133/136
Preservative Coatings
Precautions shall be taken to prevent ignitionof highly flammable hardened preservative
coatings
When coatings are determined to be highlyflammable, they shall be stripped from the
area to be heated to prevent ignition c)
P bar Y Safety Consultants Alberta Canada
1926.354
8/8/2019 You Know Welding Cutting Safety Etc
134/136
Preservative Coatings
Protection against toxic preservativecoatings (c)(1)
In enclosed spaces, all surfaces covered withtox ic preservatives shall be stripped of all to x iccoatings for a distance of at least 4 inches fromthe area of heat application, or the employees
shall be protected by air line respirators )(2) In the open air, employees shall be protected by
a respirator
P bar Y Safety Consultants Alberta Canada
1926.354
8/8/2019 You Know Welding Cutting Safety Etc
135/136
Preservative Coatings
The preservative coatings shall be removeda sufficient distance from the area to beheated to ensure that the temperature of theunstripped metal will not be appreciablyraised
Artificial cooling of the metal surroundingthe heating area may be used to limit thesize of the area required to be cleaned
P bar Y Safety Consultants Alberta Canada
8/8/2019 You Know Welding Cutting Safety Etc
136/136
Top Related