WELCOME OSHA 29 CFR 1910.251 - 255 WELDING SAFETY OSHA TRAINING

WELCOME

OSHA 29 CFR 1910.251 - 255

WELDING SAFETY

OSHA TRAINING

COURSE OBJECTIVES

TRAINING REQUIREMENTS PERSONAL PROTECTIVE EQUIPMENT CONTRACTOR SAFETY REQUIREMENTS THE RELEVANT REGULATORY STANDARDS VENTILATION REQUIREMENTS FOR WELDING ELECTRIC WELDING SAFETY REQUIREMENTS THE BASICS OF CONFINED SPACE OPERATIONS FIRE EVACUATION, PREVENTION AND PROTECTION THE GENERAL HAZARDS INVOLVED WITH WELDING OXYGEN-FUEL GAS WELDING SAFETY REQUIREMENTS

DISCUSS THE FOLLOWING:

BASIS FOR THIS COURSE

HUNDREDS OF WELDERS CRITICALLY INJURED ANNUALLY

WELDERS ARE EXPOSED TO NUMEROUS TOXIC FUMES AND GASES

WELDERS ARE EXPOSED TO NUMEROUS PHYSICAL HAZARDS

OSHA WELDING SAFETY STANDARDS REQUIRE:

ESTABLISHMENT OF A “WORKER SAFETY” PROGRAM TRAINING BE CONDUCTED WRITTEN “HOTWORK” PERMITS USE OF MATERIAL SAFETY DATA SHEETS USE OF LABELS AND OTHER WARNINGS THAT HAZARDS AND PRECAUTIONS BE EXPLAINED

BASIS FOR THIS COURSE

THE BOTTOM LINE

TRAINING YOU TO BE KNOWLEDGEABLEOF HOW TO LOWER YOUR LIFETIME

WORKPLACE EXPOSURE TO THE WELDING HAZARDS

YOU ARE POTENTIALLY EXPOSED TO INYOUR DAILY WORKING LIFE!

REGULATORY STANDARDTHE GENERAL DUTY CLAUSE

FEDERAL - 29 CFR 1903.1

EMPLOYERS MUST: Furnish a place of employment freeof recognized hazards that are causing or are likely tocause death or serious physical harm to employees.Employers must comply with occupational safety andhealth standards promulgated under the Williams-SteigerOccupational Safety and Health Act of 1970.

29CFR - SAFETY AND HEALTH STANDARDS

1910 - GENERAL INDUSTRY

252 - GENERAL REQUIREMENTS 253 - OXYGEN WELDING 254 - ARC WELDING 255 - RESISTANCE WELDING

OSHA REGULATORY STANDARDS

DANGER

HOTWORKIN

PROGRESS

REGULATORY STANDARDNFPA and ANSI WELDING CRITERIA

FIRE PREVENTION IN THE USE OF CUTTINGAND WELDING PROCESSES

NFPA - 51B

SAFETY IN WELDING AND CUTTING

ANSI - Z49.1

GENERAL PROGRAM REQUIREMENTS

REVIEW FIRE HAZARDS

INSTITUTE SAFE WORK PRACTICES

PROVIDE COMPLETE HAZARD INFORMATION

PROVIDE HEALTH SCREENING WHERE NEEDED

PROVIDE TRAINING TO ALL REQUIRED EMPLOYEES

INSTALL ENGINEERING CONTROLS WHERE POSSIBLE

ALL EMPLOYERS MUST: THESAFETYPROGRAM

TRAINING REQUIREMENTS

THE EMPLOYER MUST:

MAINTAIN A WELDING SAFETY PROGRAM.

DISCUSS EMPLOYEE PROTECTIVE MEASURES.

REVIEW THE PROGRAM ON AN ANNUAL BASIS.

TRAIN ALL EMPLOYEES PRIOR TO JOB ASSIGNMENT.

DISCUSS PERIPHERALS SUCH AS LOCKOUT AND CONFINED SPACES.

WELDINGSAFETY

REQUIRED WHEN THERE IS A:

CLOSE-CALL EVENT

CHANGE IN JOB ASSIGNMENT

NEW HAZARDS OR EQUIPMENT

NEW HAZARD CONTROL METHODS

FAILURE IN THE SAFETY PROCEDURES

REASON TO DOUBT EMPLOYEE PROFICIENCY

RETRAINING REQUIREMENTS

WELDINGSAFETY

PROGRAM MANAGEMENT FORMS

NON-ROUTINE TASK - PROTECTIVE MEASURES DETERMINATION FORM:

USED BY SUPERVISORS TO ASSESS JOBS THAT ARE NOT PERFORMED ON A ROUTINE BASIS, BUT WHERE THE POSSIBILITY OF INJURY TO AN EMPLOYEE EXISTS.

COMMONLY USED PROGRAM MANAGEMENT FORMS

NON-ROUTINE TASKS

DEFINITION: A TASK THAT IS REQUIRED ONLY ON OCCASION AND WHERE EMPLOYEES ARE NOT COMPLETELY FAMILIAR WITH ALL ASPECTS OF THE JOB.

PROBLEM: THIS LACK OF FAMILIARITY CONTRIBUTES GREATLY TO A HIGHER PROBABILITY OF INJURY.

EXAMPLE: THE ANNUAL (OR INFREQUENT) CLEANING OF REACTOR VESSELS IN PROCESSES.

SUPERVISORS MUST: IDENTIFY NONROUTINE TASKS AND ASSESS THEIR DEGREE OF RISK TO EMPLOYEES.

PROGRAM MANAGEMENT FORMS

HOTWORK PERMIT:

COMMONLY USED PROGRAM MANAGEMENT FORMS

PRE-WORK SAFETY EVALUATION

ISSUED BY COMPETENT AUTHORITY

LOWERS RISK OF ACCIDENTS AND FIRES

STANDARDIZES WORK ACCOMPLISHMENT

ESTABLISHES TIMEFRAMES WHEN HOTWORK CAN OCCUR

GENERALLY NOT NEEDED FOR DESIGNATED FIRE-SAFE AREAS

DANGER

FIRE HAZARD

HOTWORK PERMITREQUIRED

GENERAL WELDING HAZARDS

ARC RADIATION. EXPLOSIVE DUSTS. ELECTRICAL SHOCK. WELDING CLEANING. AIR CONTAMINATION. FIRE AND EXPLOSION. CONFINED SPACE OPERATIONS. CONTROL OF HAZARDOUS ENERGY. COMPRESSED GAS HANDLING AND USE HAZARDS.

OTHER HAZARDS RELATED TO SPECIFIC PROCESSES OR OCCUPATIONS.

DANGER

HOTWORKIN

PROGRESS

SPECIFIC TYPES OF HAZARDS

AIR CONTAMINANTS

GASES. GENERALLY USED IN A COMPRESSED FORM. CAN EFFECT ALL ROUTES OF ENTRY. VAPORS. FORMED BY EVAPORATION OF LIQUIDS OR SOLIDS. AMOUNT USUALLY DEPENDS UPON EXPOSED SURFACE AREA, TEMPERATURE, AND VAPOR PRESSURE OF SUBSTANCE. CAN BE DEADLY.

AIR CONTAMINANTS

FUMES. USUALLY METALLIC AND FORMED BY WELDING, CUTTING, OR BRAZING OPERATIONS. EXTREMELY HAZARDOUS TO INHALE. PARTICULATES. COMPOSED OF SOLID OR LIQUID PARTICLES THAT ARE SUSPENDED OR DISPERSED IN AIR. SUCH AS DUST, MISTS, OR SMOKES. CAN BE EXPLOSIVE AND HAZARDOUS TO BREATH.


ROUTES OF ENTRY FOR METALS

- INHALATION: MOST COMMON ROUTE OF ENTRY.

SMALLER PARTICULATES ARE TRAPPED IN LUNGS AND ABSORBED.


- INGESTION:

EATING, DRINKING, OR SMOKING WITHOUT WASHING HANDS FIRST.

EATING, DRINKING, OR SMOKING CONTAMINATED CONSUMABLES.




- ABSORPTION.

CAN OCCUR THROUGH UNBROKEN SKIN OR MUCOUS MEMBRANES.

ABSORPTION GENERALLY LEAST HAZARDOUS ROUTE OF ENTRY.


- INJECTION.

USUALLY CAUSED BY PUNCTURE WOUNDS INVOLVING METALS.

COMPRESSED AIR CAN ALSO CAUSE INJECTION OF METALS.



- METAL PARTICULATES:

COME FROM SAND BLASTING, DEBURRING, AND LIKE OPERATIONS. METALS CAN TAKE THE FORM OF AIRBORNE DUSTS. ENGINEERING CONTROLS ARE USUALLY REQUIRED. RESPIRATORY PROTECTION IS NEEDED WHERE DUSTS CANNOT BE ADEQUATELY CONTROLLED WITH ENGINEERING CONTROLS.


- FUMES:

COMMON TO ALL WELDING OPERATIONS FUMES ARE MADE UP OF VERY TINY SOLID METAL PARTICLES. PARTICLES ARE THE CONDENSATES OF VAPORIZED METAL. EFFECTS ON THE HUMAN BODY CAN BE DISASTROUS IF PROPER VENTILATION IS NOT USED. THINK OF THE DIFFERENT TYPES OF METALS AND BONDING MATERIALS USED USED IN A WELDING OPERATION.


SPECIFIC METALS

- CADMIUM. HIGHLY TOXIC, INHALATION MOST COMMON ROUTE OF ENTRY. SMALLER PARTICULATES ARE TRAPPED IN LUNGS AND ABSORBED. DANGEROUS DOSES CAN BE ASYMPTOMATIC FOR HOURS. KNOWN HUMAN CARCINOGEN. TARGET ORGANS INCLUDE, KIDNEYS, RESPIRATORY SYSTEM.


- COPPER AND ZINC. HIGHLY TOXIC, INHALATION MOST COMMON ROUTE OF ENTRY. CAN CAUSE “METAL FUME FEVER” RESULTING IN (SEVERE FLU-LIKE SYMPTOMS). TARGET ORGANS INCLUDE, KIDNEYS, RESPIRATORY SYSTEM.


SPECIFIC METALS

- NICKEL.

CAN BE ABSORBED THROUGH SKIN, OR LUNGS. ABSORPTION GENERALLY LEAST HAZARDOUS ROUTE OF ENTRY. TARGET ORGANS INCLUDE; CNS, RESPIRATORY SYSTEM.


SPECIFIC METALS

METALS - GENERAL PRECAUTIONS

IF YOU’RE NOT FAMILIAR WITH THE METAL, FIND OUT!

READ THE MATERIAL SAFETY DATA SHEET!

READ THE LABELS ON CONTAINERS.

OBSERVE WRITTEN WARNINGS!

DON’T EAT, DRINK, OR SMOKE AROUND METAL DUSTS.

CHANGE YOUR CLOTHS! DON’T TAKE IT HOME!


ENSURE WORK AREA IS VENTILATED.

WEAR APPROPRIATE PROTECTIVE EQUIPMENT.

SPILLS OF METALS MUST BE CONTAINED, NOT RAISED!

FOR LARGE SPILLS, CONTACT SAFETY OFFICER.

STORE ACIDS FROM BASES TO PREVENT REACTIONS.

MAGNESIUM IS WATER REACTIVE, USE DRY SAND TO EXTINGUISH MAGNESIUM FIRES.

METALS - GENERAL PRECAUTIONS (CONTINUED)


PERSONAL PROTECTIVE EQUIPMENT

EYE PROTECTION:

FOLLOW LOCAL JOB PROCEDURES SEE ANSI STANDARD Z87.1 FOR SHADING CRITERIA SEE CHART IN 29CFR 1910.252 FOR SHADING CRITERIA REVIEW THE JOB HAZARD ANALYSIS ASSESSMENT IF A NEW JHA IS NEEDED REQUEST IT IF YOU HAVE QUESTIONS CONSULT YOUR SUPERVISOR


GUIDE FOR SELECTION OF SHADE NUMBERS:

WELDING OPERATION SHADE #

Soldering 2Torch Brazing 3 or 4Light Cutting, up to 1 Inch 3 or 4Medium Cutting, 1 to 6 Inches 4 or 5Heavy Cutting, 6 Inches and Over 5 or 6Gas Welding (Light) Up to 1/8 Inch 4 or 5 Gas Welding (Medium) 1/8 to 1/2 Inch 5 or 6Gas Welding (Heavy) 1/2 Inch and Over 6 or 8


GUIDE FOR SELECTION OF SHADE NUMBERS:

WELDING OPERATION SHADE #

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 11Gas-Shielded Arc Welding (ferrous) 1/16, 3/32, 1/8, 5/32 Inch Electrodes 12Shielded Metal Arc Welding 3/16, 7/32, 1/4 Inch Electrodes 12Shielded Metal Arc Welding 5/16, 3/8 , Inch Electrodes 14Atomic Hydrogen welding 10-14Carbon Arc Welding 14


SHADE NUMBER SELECTION:

AS A RULE OF THUMB, START WITH A SHADE THAT IS TOO DARK TO SEE THE WORK ZONE. THEN GO TO A LIGHTER SHADE WHICH GIVES SUFFICIENT VISIBILITY OF THE WORK ZONE WITHOUT EXERTING A STRAIN ON YOUR EYES.

DO NOT ALLOW OBSERVERS TO REMAIN IN THE AREA WITHOUT PROPER PROTECTION.


SKIN PROTECTION:

FOLLOW LOCAL JOB PROCEDURES USE ONLY APPROVED WELDING SAFETY EQUIPMENT ENSURE FULL SKIN PROTECTION IS PROVIDED SEE ANSI STANDARD Z49.1 FOR SPECIFIC CRITERIA SEE 29CFR 1910.132 AND 252 FOR GENERAL CRITERIA REVIEW THE JOB HAZARD ANALYSIS ASSESSMENT IF YOU HAVE QUESTIONS CONSULT YOUR SUPERVISOR


FIRE RESISTANT PROTECTIVE CLOTHING:

WEAR CLOTHING WITHOUT POCKETS OR CUFFS SLEEVES SHOULD BE ROLLED DOWN AND BUTTONED COLLARS SHOULD BE BUTTONED WEAR A LEATHER CAP OR HARD HAT REMEMBER TO WEAR PROPER SHOES FOR THE JOB ENSURE CLOTHING IS FREE OF IGNITABLE STAINS CONSIDER SCARFS, GAUNTLETS AND LEGGINGS


HEAD PROTECTION:

FOLLOW LOCAL JOB PROCEDURES USE ONLY APPROVED WELDING SAFETY EQUIPMENT REQUIRED FOR ALL ARC WELDING OR ARC CUTTING HELMETS MUST BE INSULATED AND HEAT RESISTANT HELMETS MUST PROTECT FACE, NECK, HAIR AND EARS HELMETS MUST BE MADE OF NONFLAMMABLE MATERIAL HELMETS MUST BE CAPABLE OF BEING STERILIZED


RESPIRATORY PROTECTION:

FOLLOW LOCAL JOB VENTILATION PROCEDURES ADEQUATE VENTILATION IS MANDATORY USE APPROVED RESPIRATORY PROTECTION EQUIPMENT NEVER BREATH METALLIC FUMES

ALWAYS ASSUME WORST-CASE SCENARIO WHEN SELECTING RESPIRATORY PROTECTION MEASURES


OBSERVERS/CO-WORKER PROTECTION:

NEED THE SAME PROTECTION AS THE WORKER

DESIGNATE SAFE AREAS TO ALLOW FOR SMOOTH OPERATIONS IN THE LOCAL WORKING AREA

ALWAYS ASSUME WORST-CASE SCENARIO WHEN SELECTING PROTECTIVE MEASURES

FIRE EVACUATION

BASIC CONSIDERATIONS:

KNOW TWO MEANS OF ESCAPE FROM AREA

KNOW THE WRITTEN POLICY

KNOW THE PREFERRED MEANS OF ALERTING OTHERS

KNOW WHERE THE EVACUATION RELOCATION POINT IS

YOU WON’T HAVE TIME TO LEARN SHOULD YOU HAVE TO EVACUATE!

FIRE PREVENTION AND PROTECTION

BASIC PRECAUTIONS:

NFPA STANDARD 51B HAS DETAILED REQUIREMENTS

ADEQUATE VENTILATION IS MANDATORY

SITE ASSESSMENT FOR HOT-WORK MUST BE MADE

SITE PRECAUTIONS VARY FROM SITE TO SITE

MOVABLE FIRE HAZARDS MUST BE MOVED

NON-MOVEABLE FIRE HAZARDS MUST BE GUARDED

HOT-WORK PERMITS ESSENTIAL IN NON FIRE-SAFE AREAS


WELDING SURFACES:

FLOOR OPENINGS AND CRACKS MUST BE PROTECTED WET SURFACES MUST BE PROTECTED CONSIDER EFFECT ON LOWER LEVEL SURFACES CONSIDER HOLES IN WALLS, DOORWAYS, AND WINDOWS CONSIDER DUCTING OR VENTS THAT CAN CARRY SPARKS CONSIDER EFFECTS OF HIGH WIND AREAS CONSIDER EFFECT RAIN COULD HAVE ON THE JOB


FIRE EXTINGUISHING EQUIPMENT:

PORTABLE EXTINGUISHERS PAILS OF WATER PAILS OF SAND MUST BE MAINTAINED FOR INSTANT USE IS THE METHOD APPROPRIATE FOR THE HAZARD? ARE PERSONNEL TRAINED IN PROPER USE? WHAT IF THE EXTINGUISHING EQUIPMENT ISN’T ENOUGH? WHO WILL CONTACT THE LOCAL FIRE DEPARTMENT?

DANGER

NO SMOKING,MATCHES OROPEN FLAME


FIRE WATCHERS ARE:

1. OBSERVERS WHO ARE SPECIFICALLY TRAINED TO WATCH OVER AREAS WHERE HOT-WORK IS BEING PERFORMED.

2. REQUIRED WHENEVER WELDING OR CUTTING IS PERFORMED IN LOCATIONS WHERE OTHER THAN A MINOR FIRE MIGHT DEVELOP, OR IF ANY OF THE CONDITIONS NOTED ON THE FOLLOWING SLIDE EXIST.


FIRE WATCH IS REQUIRED WHEN:

COMBUSTIBLES ARE CLOSER THAN 35 FEET COMBUSTIBLES ARE EASILY IGNITED BY SPARKS COMBUSTIBLES ARE ADJACENT TO METAL PARTITIONS COMBUSTIBLES CAN BE IGNITED BY CONDUCTION COMBUSTIBLES CAN BE IGNITED BY RADIATION WALLS, CEILINGS OR FLOOR HOLES CONTAIN COMBUSTIBLES

WHENEVER SPECIAL HAZARDS WARRANT FIRE WATCH


FIREWATCHERS MUST:

BE EQUIPPED WITH PROPER EXTINGUISHING EQUIPMENT BE TRAINED TO RECOGNIZE OUT-OF-CONTROL FIRES BE FAMILIAR WITH LOCAL FIRE ALARM PROCEDURES BE TRAINED TO KNOW THEIR LEVEL OF CAPABILITY OBSERVE HOT AREAS FOR 1/2 HR AFTER COMPLETION

BE FAMILIAR WITH THE HOT-WORK PERMITTING SYSTEM

PROHIBITED WELDING SITUATIONS

WELDING OR CUTTING IS PROHIBITED:

IN AREAS NOT AUTHORIZED BY MANAGEMENT IN SPRINKLER IMPAIRED BUILDINGS IN THE PRESENCE OF EXPLOSIVE ATMOSPHERES WHERE EXPLOSIVE ATMOSPHERES CAN DEVELOP NEAR EXPOSED READILY IGNITABLE MATERIALS

ON UNPREPARED DRUMS, BARRELS, TANKS ETC. ON UNPREPARED PIPE LINES, VALVES ECT.

VENTILATION FOR GENERAL WELDING

MECHANICAL VENTILATION IS PROVIDED WHEN:

THE WORK AREA IS LESS THAN 10,000 CF PER WELDER CEILINGS HEIGHTS OF LESS THAN 16FT ARE PRESENT NATURAL VENTILATION IS OBSTRUCTED

MINIMUM RATE:

2000CFM PER WELDER MUST BE MAINTAINED

CONFINED SPACE OPERATIONS

CONFINED SPACE OPERATIONS ARE BEYOND THE

SCOPE OF THIS CLASS. IN DEPTH TRAINING MUST

BE PROVIDED FOR SAFE ENTRY. NEVER ATTEMPT

TO WELD IN A CONFINED SPACE WITHOUT PROPER

TRAINING AND RESCUE SUPPORT! DON’T CREATE

ANOTHER OSHA STATISTIC!

IMPORTANT!


THE FOLLOWING CONSTITUTE A CONFINED SPACE:

ITS SIZE AND SHAPE ALLOW A PERSON TO ENTER IT

HAS LIMITED ENTRY AND EGRESS

IS NOT DESIGNED FOR CONTINUOUS OCCUPANCY

CONTINUED


THE FOLLOWING CONSTITUTE A PERMIT REQUIRED CONFINED SPACE:

CONTAINS OR HAS A POTENTIAL TO CONTAIN A HAZARDOUS ATMOSPHERE OR;

CONTAINS A MATERIAL THAT HAS THE POTENTIAL TO ENGULF AN ENTRANT OR;

HAS AN INTERNAL CONFIGURATION IN WHICH AN ENTRANT COULD BE TRAPPED OR ASPHYXIATED BY INWARDLY CONVERGING WALLS OR BY A FLOOR WHICH SLOPES DOWNWARD AND TAPERS TO A SMALLER CROSS-SECTION OR;

CONTINUED


CONTAINS ANY OTHER RECOGNIZED SERIOUS SAFETY OR HEALTH HAZARD

CONTINUED


EXAMPLES OF CONFINED SPACES INCLUDE:

CONTINUED

SILOS TANKS SEWERS BOILERS FLOOR PITS CRAWL SPACES REACTORS VESSELS

DANGER

CONFINED SPACE

ENTRY PERMITREQUIRED


THE FOLLOWING TRAINING MUST BE PROVIDED:

EMERGENCY ENTRY AND EXIT PROCEDURES USE OF APPLICABLE RESPIRATORS FIRST AID PROCEDURES LOCKOUT PROCEDURES LOCAL PERMIT SYSTEMS

STANDARD SAFE WORK PRACTICES IN USE

CONTINUED


THE FOLLOWING PRECAUTIONS MUST BE TAKEN:

PROPER TRAINING IS ESSENTIAL AND MANDATORY FOLLOW LOCAL ENTRY PERMIT PROCEDURES SHUT OFF ALL UNNECESSARY PIPES, AND DUCTS SHUT OFF ALL UNNECESSARY ELECTRICAL LINES PROVIDE CONTINUOUS MECHANICAL VENTILATION PERFORMED PROTOCOL FOR INITIAL AIR MONITORING

LOCATE GAS CYLINDERS AND POWER SOURCES FOR WELDING OUTSIDE OF THE SPACE

CONTINUED


THE FOLLOWING PRECAUTIONS MUST BE TAKEN:

ATTENDANTS MUST BE DESIGNATED TO MAINTAIN VISUAL AND VOICE CONTACT WHEN NOT IN USE, GAS SUPPLIED EQUIPMENT MUST BE REMOVED FROM THE SPACE

WHEN NOT IN USE ARC WELDING ELECTRODES MUST BE PREVENTED FROM MAKING CONTACT

CONFINED SPACE EXTRACTION EQUIPMENT MUST BE USED AND OR WORN

CONTINUED

OXYGEN-FUEL GAS WELDING

FUMES AND GAS HAZARDS:

PROVIDE SUFFICIENT VENTILATION FOR OPERATION NEVER BREATH FUMES OR GASES REMOVE PAINTS OR COATINGS FROM WELDING SURFACE CONSIDER EFFECTS ON CO-WORKERS CONSIDER ALL FUMES, GASES, SMOKES HAZARDOUS


OXYGEN HAZARDS:

KEEP OIL AND GREASE FROM HOSES, REGULATORS ETC. NEVER USE LUBRICANTS ON OXY-FUEL EQUIPMENT OXYGEN ENRICHED MATERIAL BURNS MUCH HOTTER! KEEP OXYGEN FROM ENTERING PERMEABLE MATERIAL NEVER HANDLE OXYGEN IN GREASE OR OILY AREAS CONSIDER ALL FUMES, GASES, SMOKES HAZARDOUS

OXYGEN IS “NOT” AIR, NEVER USE FOR DUST-OFF OF CLOTHING OR WORK SURFACES!


FUEL GASES:

CAN DISPLACE BREATHING AIR WORK AREAS MUST HAVE AT LEAST 18% OXYGEN CONTACT THE GAS SUPPLIER FOR SPECIFIC INFORMATION RELATIVE VAPOR DENSITY IS A CRITICAL CONSIDERATION!

FUEL GASES CAN COLLECT IN HIGH OR LOW AREAS VAPOR DENSITY WILL DETERMINE WHERE THESE GASES GO HOSES CAN LEAK AND DISPERSE GASES IN UNWANTED AREAS FORCED VENTILATION AND EXHAUST DUCTS MAY BE NEEDED


FUEL GASES (Cont.):

FUEL GAS RELATIVE VAPOR DENSITY WITH AIR

NATURAL GAS 0.55ACETYLENE 0.91BREATHING AIR 1.00PROPYLENE 1.42MAPP 1.48PROPANE 1.56 BUTANE 2.05

LIGHTER THAN AIR

HEAVIER THAN AIR

NEVER RELEASE FUEL GASES INTO THE AIR NEAR OTHER WELDINGOR CUTTING OPERATIONS OR POTENTIAL SOURCES OF IGNITION!


FUEL GASES (Cont.):

FUEL GAS EXPLOSIVE CONCENTRATION IN AIR

NATURAL GAS 2.8% TO 17%ACETYLENE 2.3% TO 80%PROPYLENE 2.0% TO 11.1%MAPP 3.4% TO 10.8%PROPANE 2.1% TO 9.5% BUTANE 1.9% TO 8.5%

NEVER RELEASE FUEL GASES INTO THE AIR NEAR OTHER WELDINGOR CUTTING OPERATIONS OR POTENTIAL SOURCES OF IGNITION!

GASES - GENERAL SAFETY REQUIREMENTS

UNLESS IN USE, VALVES SHOULD BE KEPT CLOSED.

NEVER TAMPER WITH SAFETY RELIEF DEVICES.

ALWAYS USE AN APPROVED PRESSURE-REDUCING REGULATOR.

LEAVE “T” WRENCHES IN PLACE AT ALL TIMES.

THAW ICE WITH WARM (NOT BOILING) WATER.

NEVER LET RECESSED TOPS OF CYLINDERS FILL WITH WATER.

NEVER USE A CYLINDER AS A ROLLER OR SUPPORT.

HANDLING GASES

GASES - GENERAL SAFETY REQUIREMENTS

NEVER TRANSFER ANY GAS FROM ONE CYLINDER TO ANOTHER.

NEVER TRANSPORT USING ELECTRO-MAGNETIC LIFTS.

SECURE CYLINDERS FROM TAMPERING WHEN NOT IN USE.

TREAT EVERY CYLINDER LIKE A BOMB.

HANDLING GASESCONTINUED

GASES - PRE-OPERATION SAFETY REQUIREMENTS

1. INSPECT CYLINDER FOR DAMAGE BEFORE USE.

2. ENSURE “IN USE” LABEL IS PRESENT.

3. ENSURE ALL LABELS AND WARNINGS ARE READABLE.

4. PLACE UPRIGHT ON STABLE DRY SURFACE.

5. ENSURE CYLINDER IS RESTRAINED ABOVE MID-POINT.

6. NEVER SECURE TO ELECTRICAL LINES OR CONDUITS.

7. KEEP HEAT, FLAME, AND ELECTRICITY AWAY FROM CYLINDER.

8. OPERATE IN ACCORDANCE WITH WELDING PROCEDURES.


GASES - POST-OPERATION SAFETY REQUIREMENTS

1. ENSURE “EMPTY” OR LIKE LABEL PRESENT.

2. ENSURE VALVE IS CLOSED COMPLETELY AND CAP CYLINDER.

3. REMOVE FROM OPERATION FOLLOWING PROCEDURES.

4. NEVER ROLL, TRANSPORT CYLINDERS USING HANDTRUCK.

5. NEVER UNDERESTIMATE HAZARDS ASSOCIATED WITH COMPRESSED GASES.


GASES - TRANSPORTING REQUIREMENTS

TRANSPORT WITH REGULATOR REMOVED.

NEVER TRANSPORT IN CONFINED SPACES.

ALWAYS PROVIDE PLENTY OF VENTILATION.

PREVENT ICE OR SNOW FROM ACCUMULATING.

USE SUITABLE HAND TRUCK OR RACKS TO MOVE CYLINDERS.

NEVER USE OR TRANSPORT A LEAKING CYLINDER.

NEVER TRANSPORT USING SLINGS OR ELECTRO-MAGNETS.

TRANSPORTING GASES

GASES - STORAGE REQUIREMENTS

STORE ONLY IN DESIGNATED AREAS.

STORE AND USE ON A FIRST-IN, FIRST-OUT BASIS.

NEVER STORE WITHOUT PROPER LABELING.

IDENTIFY ALL EMPTY CYLINDERS.

STORE LIKE GASES WITH LIKE GASES.

SEPARATE EMPTY CYLINDERS FROM FULL ONES.

STORE WITHIN PROPER TEMPERATURE RANGES.

STORING GASES

ELECTRIC WELDING

FUMES HAZARDS:

PROVIDE SUFFICIENT VENTILATION FOR OPERATION NEVER BREATH FUMES REMOVE PAINTS OR COATINGS FROM WELDING SURFACE CONSIDER EFFECTS ON CO-WORKERS CONSIDER ALL FUMES AND SMOKES HAZARDOUS

ELECTRIC WELDING

UNDERSTAND THE FOLLOWING:

MANUFACTURERS’ INSTRUCTIONS FOR SAFE USE MAINTENANCE REPORTING REQUIREMENTS INDIVIDUAL MACHINE HOOK-UP PROCEDURES GROUNDING REQUIREMENTS LEAK DETECTION OF WATER, OR FUELS SAFE USE OF SHUT-DOWN SWITCHES SAFE USE OF ELECTRODES SAFE USE OF ELECTRIC CABLES

ELECTRIC WELDING

FUMES HAZARDS:

PROVIDE SUFFICING VENTILATION FOR OPERATION NEVER BREATH FUMES REMOVE PAINTS OR COATINGS FROM WELDING SURFACE CONSIDER EFFECTS ON CO-WORKERS CONSIDER ALL FUMES AND SMOKES HAZARDOUS

CONTINUED

ELECTRIC WELDING

SAFETY PRECAUTIONS FOR ARC WELDING:

ENSURE EQUIPMENT IS INSTALLED PROPERLY ENSURE EQUIPMENT IS SERVICEABLE ALWAYS WEAR SUITABLE PROTECTIVE CLOTHING AVOID BREATHING AIR IN THE FUME PLUME KEEP THE WORK AREA FREE OF FIRE HAZARDS CONSIDER HAZARDS ASSOCIATED WITH WET AREA SAFELY DISPOSE OF ELECTRODE STUBS SHIELD OTHERS FROM LIGHT RAYS DO NOT WELD NEAR DEGREASING OPERATIONS

CONTINUED

ELECTRIC WELDING

SAFETY PRECAUTIONS FOR ARC WELDING:

CONSIDER LOCATION OF WORK:

- FALL HAZARDS - MULTILEVEL WORK OPERATIONS - CONFINED SPACE HAZARDS - LOCKOUT TAGOUT REQUIREMENTS - EFFECT ON LOCAL PROCESSES - CO-WORKER PROTECTION

CONTINUED

OUTSIDE CONTRACTORS MUST:

INFORM REPRESENTATIVES OF THE FACILITY OF THE TYPES OF WELDING THAT THEY WILL BE PERFORMING AND BE PREPARED TO PROVIDE SAFETY INFORMATION UPON REQUEST

FACILITY OR EMPLOYER REPRESENTATIVES MUST:

INFORM THE CONTRACTOR OF HAZARDS IN THE AREA WHERE CONTRACTOR PERSONNEL WILL BE WORKING AND BE PREPARED TO PROVIDE SAFETY INFORMATION UPON REQUEST

CONTRACTOR SAFETY REQUIREMENTS

REMEMBER, YOU CONTROL YOUR FACILITY OR AREA!

REVIEW THEIR PROCEDURES WITH THEM BEFORE STARTING THE JOB!

DETERMINE THEIR SAFETY PERFORMANCE RECORD!

DETERMINE WHO IS IN CHARGE OF THEIR PEOPLE!

DETERMINE HOW THEY WILL AFFECT YOUR EMPLOYEES!

TIPS FOR USING CONTRACTORS

OSHA'S PERCEPTIONOF A SUCCESSFUL PROGRAM

1. DETAILED WELDING SAFETY PROCEDURES

2. EXTENSIVE EMPLOYEE TRAINING PROGRAMS

3. PERIODIC REINFORCEMENT OF TRAINING

4. SUFFICIENT DISCIPLINE REGARDING IMPLEMENTATION

WORK AT WORKING SAFELY

Training is the key to success in managing safety inthe work environment. Attitude is also a key factor inmaintaining a safe workplace. Safety is, and alwayswill be a team effort, safety starts with each individualemployee and concludes with everyone leaving at theend of the day to rejoin their families.

Patricia A. Ice Industrial Hygienist

Documents

WELCOME OSHA 29 CFR 1910.251 - 255 WELDING SAFETY OSHA TRAINING