Ed Craig. www.weldreality.com.
practices for welding are covered in ANSI Z49.1:2005"Saftey in Welding
Cutting and Allied Processes" as well as in other standards.
often has stupidity, poor work ethic, lack of management, poor
and lack of training been the cause of a weld related accident?
MIG WELDING STAINLESS
STEELS AND ALLOY STEELS
STAINLESS AND NIOSH AND HEXAVELENT CHROMIUM:
primary concern when welding common stainless alloys is "Hexavalent Chromium"
(Cr(VI)) compounds. These compounds are part of a group of chemical substances
that contain the metallic element chromium in its positive - 6 valence (hexavalent)
state. Occupational exposures to Cr(VI) compounds occur during the production
of stainless steels, chromate chemicals, and chromate pigments. Cr(VI) exposures
also occur during other work activities such as stainless steel welding (possibly
also from stainless grinding), thermal cutting, chrome plating, painting, and
considers all Cr(VI) compounds to be potential occupational carcinogens. An increased
risk of lung cancer has been demonstrated in workers exposed to Cr(VI) compounds.
Other adverse health effects associated with Cr(VI) exposure include;
 skin ulceration,
 allergic contact dermatitis,
 occupational asthma,
 nasal irritation and ulceration,
perforated nasal septa,
 nasal cancer,
 sinus cancer,
 eye irritation
 perforated eardrums,
 kidney damage,
 pulmonary congestion and edema,
 epigastric pain,
 erosion and discoloration of the teeth.
Cr(VI) compounds vary in solubility from those that are readily soluble to those
which are practically insoluble in water. In 1975 NIOSH documented the carcinogenic
effects of water-insoluble Cr(VI) compounds. The NIOSH 1988 testimony to OSHA
on the air contaminants standard recommended that all Cr(VI) compounds, regardless
of their degree of solubility in water, be considered occupational carcinogens.
NIOSH is currently reviewing and evaluating the available information on Cr(VI)
compounds including the toxicology, health effects, industrial hygiene, and analytical
chemistry literature in order to update its 1975 criteria document on Cr(VI).
chromate, chromium trioxide, lead chromate, strontium chromate, and zinc chromate
are known human carcinogens. An increase in incidence of lung cancer has been
observed among workers in industries that produce chromate and manufacture pigments
containing chromate. An increased rate of lung cancer has also been reported among
producers and consumers of pigment containing chromate. One study of chromium-nickel
alloy foundry workers showed a statistically significant increase in lung cancers
Hexavalent chromium is considered a potential lung carcinogen. Studies of workers
in the chromate production, plating, and pigment industries consistently show
increased rates of lung cancer.
chromium. Eyes. Direct
eye contact with chromic acid or chromate dusts can cause permanent eye damage.
Hexavalent chromium. Respiratory Tract.
chromium can irritate the nose, throat, and lungs. Repeated or prolonged exposure
can damage the mucous membranes of the nasal passages and result in ulcers. In
severe cases, exposure causes perforation of the septum (the wall separating the
nasal passages). Acute exposures may cause perforation of the nasal septum within
a week of exposure. Occupational Dermatoses. National Institute for Occupational
Safety and Health (NIOSH) (2001, April 17). Slide 39 shows an image of a nasal
chromium. Skin. Prolonged
skin contact can result in dermatitis and skin ulcers. Some workers develop an
allergic sensitization to chromium. In sensitized workers, contact with even small
amounts can cause a serious skin rash. Kidney damage has been linked to high dermal
chromium The body: Hexavalent chromium causes lung cancer in humans. Workers exposed
to hexavalent chromium in workplace air had much higher rates of lung cancer than
workers who were not exposed. Studies of workers in the chromate production and
pigment industries consistently show increased rates of lung cancer. Studies of
chrome platers also generally show increased rates.
TESTS FOR EXPOSURE OR MEDICAL EFFECTS. There
are no routine medical tests to measure the amount of hexavalent chromium that
has been absorbed into the body. Excreted chromium can be measured in urine. However,
this test is only useful for measuring recent exposure to stainless steel welding
fumes. In most situations, air monitoring gives the best measure of worker exposure.
Therefore, measuring hexavalent chromium in blood or urine is not recommended
or legally required. However, we recommend that workers who are frequently exposed
to hexavalent chromium or other hazardous substances receive a complete physical
examination, including an occupational and medical history, at the beginning of
employment. Periodic follow-up examinations are also recommended.
OF CHROMIUM EXPOSURE.
Hexavalent chromium materials
are used in many jobs, but three jobs in particular involve frequent and or heavy
chromium exposure. These jobs are
 spraying and cladd welding anti-corrosion
 welding / grinding and cutting stainless steel, and
and Weld Processes.
There is only one weld process in which the stainless and nickel alloy weld fumes should not be a concern and that weld process is TiP TiG (www.tiptigusa.com)
SMAW (stick) stainless electrodes that provide chrome will have much of the chrome in
the "hexavelent" form generated by the reaction of the chrome with the
flux constituents in the electrode coating.
FCAW. Stainless flux cored wire, fume rates change with shielding gas and parameters
used. The more reactive the gas mix and the higher the weld parameters used, the
higher the levels of chrome. Typically FCAW chrome hexavelent levels are lower
than SMAW yet the chrome content of the fume can be higher.
provides lower fumes than SMAW and FCAW. Pulsed MIG provides much higher weld fumes than TiP TiG.
TIG provides the lowest fume content and as the TIP
TIG process welds at much faster weld speeds than TIG you should be able to
TIP TIG weld on many stainless applications without exhaust equipment.
more of this type of electrode data
of stainless steel welders have been inconclusive as stainless steel welders have
not been studied adequately. Evaluations
by the California Department of Health Services and the U.S. Environmental Protection
Agency (EPA) indicate that the risk for workers is extremely
high. The best estimate of the excess risk of lung cancer from exposure
to hexavalent chromium compounds at California's current Permissible Exposure
Limit (PEL), every working day for 40 years, is 8 cases of cancer in every 100
workers exposed. An individual worker's actual risk depends on how much hexavalent
chromium is in the workplace air and how long the exposure goes on. The lower
and briefer the exposure, the less the risk of lung cancer. That's
why it is important to take steps to reduce worker exposure immediately.
Spraying: In spraying anti-corrosion coatings, a liquid that contains
zinc chromate or lead chromate is applied to metal surfaces through a high-pressure
spray gun. The spray nozzle creates a mist that can be inhaled. Spraying coatings
without adequate control measures can lead to exposure more than twenty times
above the legal exposure limit.
In chrome plating, metal parts are immersed in a liquid solution of chromic acid
through which an electric current flows. The electroplating process creates gases
that bubble to the tank surface and carry liquid particles of chromic acid solution
into the air. This mist can be inhaled. Hard chrome plating, which uses a stronger
electric current and a higher tank temperature than bright chrome plating, creates
the most chromic acid mist. Hard chrome plating without adequate control measures
can lead to exposure several times above the legal exposure limit.
Welding / Cladding: In welding, cladding, the intense
heat of the arc or flame vaporizes the base metal and/or the electrode coating.
This vaporized metal condenses into tiny particles called fumes. These fume particles
can be inhaled. Chromium fume is created by welding or cutting on stainless steel
or metals that are coated with a chromium material. Welding on stainless steel
without adequate control measures can lead to exposure at least several times
above the legal exposure limit.
Hexavalent Chromium Found?
TYPES OF HEXAVALENT CHROMIUM CHEMICALS
pigments for paints, inks, and plastics lead chromate (chrome yellow, chrome green,
molybdenum orange), zinc chromate, barium chromate, calcium chromate, potassium
dichromate, sodium chromate anti-corrosion coatings (chrome plating, spray coatings)
chromic trioxide (chromic acid), zinc chromate, barium chromate, calcium chromate,
sodium chromate, strontium chromate stainless steel hexavalent chromium is given
off when stainless steel is cast, welded, or torch cut textile dyes ammonium dichromate,
potassium chromate, potassium dichromate, sodium chromate
wood preservation chromium trioxide leather tanning ammonium dichromate
TO CONTROL CHROMIUM EXPOSURE
The two best ways
to prevent inhaling or ingesting chromium-containing particles are substituting
chromium-free materials and using local exhaust ventilation. If a substitute cannot
be found, a mechanically powered local exhaust hood should be placed at the point
where chromium is released into the air, or the entire process should be contained
within the hood. Properly designed and maintained local exhaust ventilation draws
off most of the chromium before it can be inhaled. Using local exhaust is far
better than relying on dilution of chromium-contaminated air by natural ventilation
through open windows and doors, or general ventilation with fresh air brought
in through a duct. With the dilution approach, overexposure
can still occur at the point of chromium release into the air, or if the dilution
air does not mix well with the room air.
Wearing an air-purifying
respirator such as a paper mask or rubber mask with screw-in filters is the least
effective way to control exposure. In fact, the Cal/OSHA respirator standard (General
Industry Safety Order [GISO] 5144 in Title 8 of the California Code of Regulations)
allows respirator use to prevent overexposure only as the last resort. This restriction
exists because the use of respirators is complex and prone to error, often resulting
in inadequate protection.
First, the respirator
must be approved for the type of particles in the air; for example, a paper dust
mask designed for removing powder particles will not remove the fume particles
created by welding. Next, the respirator must be fit-tested to ensure that it
fits the wearer's face, and the respirator must be kept in good condition. The
fit should be regularly checked. Workers should also be medically examined
for their ability to wear a respirator. Even when these and other requirements
are met, leakage of contaminated air into the respirator may still occur.
SPECIAL CONTROL MEASURES FOR SPRAYING,
WELDING, CLADDING AND PLATING. Cal/OSHA enforces standards to control workplace
exposures to hazardous substances.
Cal/OSHA has developed special standards for some workplace processes, including
spraying, welding, and plating. These standards are designed to control worker
exposure to toxic substances, including chromium. If the provisions of these standards
are followed, workers' exposure to chromium will be greatly reduced.
Welding: Cal/OSHA standards GISO 5150 and GISO 1536 require the use
of local exhaust ventilation where possible for all "indoor" welding
and cutting operations. Further, if stainless steel welding or cutting is done
in an "enclosed space" where using local exhaust ventilation is impractical,
approved airline respirators must be worn. For "outdoor" stainless steel
welding or cutting, approved respirators must be worn; again,
an airline respirator rather than an air-purifying fume respirator provides the
best protection. Cal/OSHA construction standard GISO 1537 also regulates
the welding and cutting of metals coated with toxic substances, including chromium.
The chromium coating must be stripped for at least four inches from the area of
heat application before welding or cutting. If the coating is not stripped, approved
airline respirators must be worn.
Cal/OSHA standard GISO 5153 requires that spray coating operations be confined
to properly designed and ventilated spray booths or spray rooms whenever possible,
and sets minimum inward air velocities at the spray booth faces. If you must work
in a large spray booth downstream from the part being sprayed, an approved respirator
must also be worn.
For large-scale spraying of chromium-containing coatings
that involves a lot of back-spray, or that is done outside of a spray booth as
in construction work, wearing an approved positive-pressure airline respirator
with a full facepiece provides the best protection. This respirator delivers fresh
air through a high-pressure hose to a tightly-fitting rubber facepiece that seals
from the hairline to under the chin. Some airline respirators replace the facepiece
with a loose-fitting hood that covers the entire head; however, these hooded respirators
tend to allow some inward leakage of contaminated air.
standard GISO 5154 sets minimum air control velocities for local exhaust ventilation
systems for chrome plating tanks. Although any chrome plating tank should be equipped
with local exhaust ventilation, chromium exposure can be further reduced by placing
full or partial covers over the tank. Although covers must be removed to load
and unload the parts being plated, covers improve the function of the local exhaust
hood. For example, covers prevent strong drafts from windows or fans from carrying
chromic acid mist off the tank surface away from the local exhaust hood. Using
covers is an effective way to reduce chromium exposure in chrome plating.
current < May 2006 Permissible Exposure Limit does not adequately protect against
lung cancer. We recommend that the amount of hexavalent chromium in the air a
worker breathes be kept as low as possible.
If a worker thinks that he may be overexposed, he should talk to
his supervisor and/or union representative, or other people listed in the "Resources"
section at the end of this Hazard Alert. If any worker might be exposed to a substance
at more than the legal exposure limit, the employer must measure the amount of
the chemical in the air in the work area (Cal/OSHA standard GISO 5155). Workers
have the right to see the results of monitoring relevant to their exposure (Cal/OSHA
standard GISO 3204). Workers also have the right to see and copy their own medical
records and records of their exposure to toxic substances. These records are important
in determining whether a worker's health has been affected by the job. Employers
who have such records must keep them and make them available to employees for
at least 30 years after the end of employment.
RIGHT TO KNOW: The Hazard Communication Standard
(GISO 5194) requires employers to provide workers with information about the hazardous
substances to which they may be exposed and to train them to use these substances
safely. Employers are also required to have a Material Safety Data Sheet (MSDS)
for any workplace product that contains a hazardous substance, and must make the
MSDS available to workers or to a treating physician on request. An MSDS is a
standard form that lists the chemical contents of a product, describes its health
and safety hazards, and gives methods for using and storing it safely. This Hazard
Alert is an aid for worker training programs. It does not take the place of a
Material Safety Data Sheet or the required employer training.
Failure to comply
with GISO 5194 may also constitute failure to comply with the Safe Drinking Water
and Toxic Enforcement Act of 1986, popularly known as Proposition 65. Proposition
65 prohibits employers from exposing workers to certain chemicals (including hexavalent
chromium) above specified levels without first warning them. These chemicals are
on a list of substances "Known to the State of California to Cause Cancer
or Reproductive Toxicity." Proposition 65 allows workers to sue an employer
for large civil penalties for not providing appropriate warning about listed chemicals.
chromium compounds CR(VI) are most commonly used as a structural and anti-corrosive
element in stainless steel, iron, and steel production, and in welding and painting,
CR(VI) have been associated with lung cancer and skin disorders
2006: OSHA permissable exposure limits for hexavelent chrome. (CR(VI). Final rules
effective May 30 2006, fo into full effect May 30 2007. Engineering solutions
do not have to be implimented till 2010.
exposure over eight hours. 5 micrograms of Cr (VI), per cubic meter of air.It
used to be 52 micrograms so this is a considerable reduction which should concern
all weld shops.
from the reduction OSHA also requires the following
Identify and establish areas in the shop where PEL is expected to exceed.
Monitor the exposure of employees, not sure if this is an annual or one time only
Establish work practices and provide engineering equipment solutions to reduce
repiratory equuipment when PEL cannot be kept under minimum requirement.
Provide protective clothing, as necessary for dermal protection, (this should
Provide when necessary hand washing stations.
Train workers on hazards of CRVI and keep records.
Action Weld Consumable Lawsuits
Manganese and other Alloys.
B. Moll & Associates, Ltd. filed a worldwide class action lawsuit in the United
States District Court for the Northern District of Illinois against Illinois Tool
Works, Inc., et al., the manufacturers of welding products that produce manganese
poisoning that can cause Parkinson's Disease. According to the complaint, recent
research, case studies and medical literature confirm that there is a causal connection
between exposure to manganese welding fumes and Parkinson's disease. Parkinson's
disease is a terminal illness that usually affects people in their late 60's.
Welders have shown symptoms of Parkinson's Disease as early as age 45. People
who have been exposed to welding fumes containing manganese should be aware of
the following symptoms which may lead to Parkinson's Disease: slowed movement,
tremors and shaking, loss of coordination or balance, stiffness in body and limbs,
slowed or slurred speech, tightening of facial muscles, handwriting worsening,
difficulty walking, difficulty turning, anxiety, irritability, depression, mood
changes, short term memory loss, and inability to perform normal tasks. Anyone
exposed to manganese fumes and experiencing any of these symptoms should contact
a physician. According to the complaint, welding sites should use a combination
of ventilation and respiratory protection equipment to prevent welders from being
exposed to toxic manganese fumes during welding operations. Kenneth Moll said,
"the primary goals of this class action are to (1) obtain a Court Order forcing
manufacturers to stop the manufacture and sale of welding products that contain
manganese and issue a recall, (2) inform the public that welders (pipe fitters,
electrical workers, ironworkers, steelworkers, metal workers, plumbers, railroad
maintenance workers, piledrivers, millwrights, glass manufacturers, etc.) and
others working near welding or pipefitting activity, are at an increased risk
of manganese poisoning leading to Parkinson's disease, (3) provide compensation
to all victims for death and personal injuries, (4) provide a medical monitoring
fund for individuals who have shown symptoms of Parkinson's disease."
Rods and Welding Rod Fumes linked to Parkinson's Disease (Manganism, Manganese
Poisoning, and manganese-induced Parkinsonism).
causal connection between welding fumes that contain manganese and neurological
injuries have been documented for hundreds of years, dating back to1837. A published
report from 1837 described two ore workers who experienced symptoms of parkinsonism
induced manganese poisoning. These workers were described as showing symptoms
of "fixed gaze, slow movements, rigidity, and tremors,"
medical article published in 1932, explained that manganese electrodes should
be avoided due to health risks of welders. Incredibly, in 1937, an insurance company
published a welding safety booklet stating that manganese in welding fumes "causes
a disease similar to paralysis agitans [Parkinson's disease].
manganese poisoning in the welding profession was even recognized in 1981, by
the World Health Organization. Additionally, recent studies have further shown
that some welders exposed to welding rod fumes have now developed symptoms of
Parkinsonism or Manganism, similar to Pakinson's Disease.
instance, an unpublished report of 20,000 workers exposed to welding fumes written
by Dr. Paul Nausieda, medical director of the Regional Parkinson Center at St.
Joseph's Hospital in Milwaukee, found that 10% of the "welding population"
developed signs of, or symptoms similar to, Parkinson's Disease compared to 1%
among the general population.
the welding industry denies any cover-up involving the health risks from welding
fumes and denies any causal relationship between exposure to manganese and Parkinsonism,
the overwhelming evidence points the contrary.
jury recently awarded $1 million to Illinois man who said he developed Parkinson's
disease from years of breathing fumes from welding rods.
Larry Elam's case, the jury ruled that welding-rod manufacturers are responsible
for failing to warn him about potential health problems. Elam, 65, of Collinsville,
Ill., said he used rods made and sold by major companies across the country, including
Lincoln Electric Co. in Cleveland. The companies argued that there is no link
between welding and Parkinson's.
for welders say workers suffered neurological damage from welding rod fumes that
contain manganese, which stabilizes and hardens the weld. In documents, the attorneys
said the fumes can lead to brain damage.
is the process of joining two or more different metals. Welding electrodes
(also called welding rods) contain manganese. Additionally, certain types of welding
wire are contain up to 24% manganese. Unfortunately, the process of welding, cause
the emission of these manganese fumes to be released into the air as well as carbon
monoxide, carbon dioxide, ozone and fluorine. Few weld personnel are provided
with proper protection from the weld fumes . The gases may be odorless and cannot
be seen with the naked eye.
over a hundred and fifty years, manganese has been medically recognized as toxic
to the brain and central nervous system. Exposure to heavy concentrations of these
fumes for as little as three months may produce a progressive condition, referred
to as Manganism. Manganism is also referred to as manganese poisoning, and manganese-induced
Parkinsonism. In 1963, a toxicologist by the name of Dr. Irving Sax published
a book which noted that manganese "affects the nervous system and can cause
paralysis to a degree which may be disabling" and that "widespread...
exposure occurs in electric arc welding since most welding rod coatings contain
is a disabling neurological disorder associated with the following symptoms:
Tremors of the arms and hands;
2. Loss of balance
3. Excessive periods
of time with little or no blinking, or facial expressions;
5. Slow, unsteady and decreased movement;
6. Stiffness in arms;
8. Stiffness in legs;
9. Gait changes, including "shuffling of feet"
and rigidity in arms;
10. Loss of balance
11. Fixed gaze - Excessive
periods of time with little or no blinking, or facial expressions;
13. Impaired reflexes;
you or someone you know suffers from any of these side effects of has bee diagnosed
with Parkinson's Disease, Manganism, Mangan
Of course we all know that law companies
typically will have minimal concern for welders. Class action law suits put millions
into the hands of lawers, drive some good companies out of buisness and at the
end of the day those that are injured are often simply pawns for legal greed.
If you feel that you suffered from weld smoke issues, I would recommend you sue
for your self. See below.
weld fumes cause Parkinson's disease?
in Welding-Fumes Case
Win a Skirmish in Federal Court
Staff Reporter of THE WALL STREET JOURNAL
July 26, 2005;
federal court in Cleveland has indicated it will allow plaintiffs' lawyers to
argue that welding fumes cause Parkinson's disease, which will allow the argument
to be made in thousands of lawsuits brought on behalf of workers across the U.S.,
bringing closer a wave of potentially crippling litigation for the industry that
makes and distributes welding materials.
a draft order distributed to lawyers in the case, U.S. District Judge Kathleen
McDonald O'Malley denied a defense motion to exclude testimony that welding-fume
exposure causes the serious neurological disorder.
move doesn't address the underlying question of whether welding fumes can in fact
cause Parkinson's, but rather will help shape an avalanche of litigation now poised
to move forward in a host of other courts. About 4,500 separate welding cases
have been aggregated in front of the Cleveland judge as part of a multidistrict
litigation order. Plaintiffs' attorneys estimate there may be as many as another
5,000 such cases in state courts.
dispute over health dangers posed by welding has raged for decades. The welding
process relies on the use of welding rods, which melt to create a bond between
the two pieces of metal being joined. This releases fumes laden with manganese,
a metal known to cause neurological problems.
are as many as 500,000 welders in the U.S., but a far larger number of workers
are exposed to welding fumes in the workplace. Welding is a ubiquitous industrial
operation, used in everything from building ships and bridges to manufacturing
plastics and electronics.
of the lawsuits aim primarily at current and former makers of welding materials,
including Lincoln Electric Co. of Cleveland, A.O. Smith Corp. in Milwaukee, and
Airco, a division of BOC Group PLC of London. Suits also have named distributors
of welding gear as well as large users, including General Electric Co., Fairfield,
Conn., and Caterpillar Inc., Peoria, Ill.
are required to provide ventilation for welding operations and breathing gear
for those exposed to heavy fumes. Welding materials also come with printed warnings.
However, the basis of most of the lawsuits is that manufacturers of welding materials
knew the dangers posed by their products and didn't do enough to warn about it.
hope that this is the beginning of the end of the refusal of the welding industry
to recognize this as a serious public-health issue that affects hundreds of thousands
of people every day," says Drew Ranier, an attorney with Ranier, Gayle &
Elliott, a law firm in Lake Charles, La., and one of the lead plaintiff attorneys.
Beisner, lead council for the defendants in the Cleveland court, said the industry
has gone through 10 trials in which Parkinson's disease was alleged, and it has
won nine of them. "We thought we'd file a motion [to exclude testimony that
welding-fume exposure causes Parkinson's disease] to foreclose further litigation
of this issue," he said.
Beisner said the science isn't there to establish a connection between welding
fumes and Parkinson's disease.
He also said
it is important to view the "nature of the claims." As part of the court
proceeding in Cleveland, litigants were required to fill out a questionnaire.
Not all of them have completed this survey, Mr. Beisner said, but of those who
have, 70% said they became involved as a result of a screening process in which
lawyers invite welders to come in for medical tests. Only 14% said they incurred
any medical expenses before they joined one of the cases. Nearly a third also
has made claims in asbestos litigation, he added, so they are "repeat litigants."
Jury awards $20.5 million in welding fume lawsuit:
was reported in the Nov/ Dec 2007, USA "Welding Magazine", that a jury
in the US district court in Cleveland, Ohio awarded Jeffery Tamraz, 51 a judgment
of $17.5 million, and his wife an additional $3 million in a lawsuit in which
Tamraz sued four companies for allegedly not issuing sufficient warning about
the dangers of inhaling welding fumes.
Tamraz claimed the fumes gave
him tremors, headaches, and symptoms similar to Parkinson's disease. A nine person
jury said Dec 5, that Lincon Electric, Hobart Brothers Co. ESAB Group. TDY industries
and BOC showed negligence by not sufficiently warning Tamraz of the toxicity of
the manganese in their weld consumables.
and other Alloys. Possible Health Issues.
is found in most carbon steels, low alloy and stainless steels. Typically manganese
levels are higher in electrodes that provide welds with a slag. In contrast to
MIG wires, weld fume manganese content is higher in SMAW, GAS SHIELDED AND SELF
SHIELDED FLUX CORED wires
Be especially wary of self shielded flux cored and
> 1.6 mm CO2 flux cored wires..
 Overexposure to manganese may injure
the central nervous system and result in manganism.
 Manganism is indicated
by symptoms similar to Parkinson disease, which is a neurological disorder characterized
 Slow body movements.
 Slow Reflexes.
 Muscle weakness.
 Speech impairment.,
in stainless and nickel alloys. Human Carcinogen, severe irritation of upper respiratory
tract and skin, severe nasal issues. Kidney damage
Hard facing and high temp applications. Human Carcinogen. Chronic cough, pneumonitis,
Copper. Bronze, brass monel
and stainless. Upper respiratory tract irritation, metal fume fever and eye irritation,
anemia and skin hair discoloration.
Iron Oxide.Carbon steels and cast
iron. Benign pneumoconiosis.
Molybdenum. High strength and stainless
steels.Eye irritation and nose mucous issues,
Some steels stainless and nickel alloys. Asthma, dermatitis, lung or nasal cancer.
Some steels stainless and nickel alloys. Respiratory / eye irritation. Irritates
wet skin, bronchitis, cough and nasal bleeding.
Brass / Galvanized coatings. Metal
fume fever, tired, sleepy
Very good article on this
subject by Mike Harris in Aug 2005 Fabricator magazine.
Study on Welding and Exposure to Manganese
July 2004, the AWS Safety and Health Committee engaged an outside independent
expert, Woodhall Stopford MD, MSPH, of the Duke University Division of Occupational
and Environmental Medicine, to review the literature of published articles related
to the neurotoxicology of manganese, particularly including manganese found in
welding fume. The Committee's intention was to obtain an objective appraisal of
the relevant literature by an authoritative expert, and to receive a written report
that would reflect the expert's own views independent of those of AWS, the Safety
and Health Committee, any Committee member, or any organization or person with
a direct interest in welding matters. The Committee's plan from the outset was
that it would promptly make Dr. Stopford's report part of the public record whatever
its conclusions, and regardless of whether the Committee, or any Committee member,
would or would not ultimately agree with all of the conclusions or with any of
Dr. Stopford's specific findings or stated views. Dr. Stopford has now completed
his report which finds:
Parkinson's Disease and manganism are separate and distinct illnesses.
Published research shows that exposures associated with manganism have occurred
primarily in nonwelding occupations such as the mining and manganese alloy fabrication
Studies have not supported that welders have a higher incidence of Parkinson's
Disease compared to the general public or that welding is a risk factor for Parkinson's
Studies have not supported that welders have a higher incidence of an earlier
onset of Parkinson's Disease compared to the general public.
Studies of Parkinson's Disease patients have not supported a relationship between
welding and Parkinson's Disease.
the full report http://www.aws.org/duke_study/duke.pdf
issues in welding on galvanized steel [Indiana]
For anyone interested, I just came across this page while looking
into metal fume fever. I have learned a valuable lesson from working on galvanize.
In fact, I am still feeling the effects of "metal fume fever" as I type
this! I welded a small repair on a piece of galvanize. The material was very thin
so I used a 1/16th stainless electrode. I neglected to use a proper respirator
or ventilation. For the next 48 hours I have had flu-like symtoms. Believe me
when I say, it's not fun sitting on the toilet all day! LOL ...I do believe anything
application to galvanize that breaks down it's composition and releases zinc oxide
into the air is a dangerous health risk. Of course I compounded my problem by
inhaling the chromium fumes from the stainless electrode.Needless to say....this
will be my first and last experience with "metal fume fever"......I
hope! Ron Enns
May 5, 2005. E-Mail. Ed my husband welded on galvanized steel 3 days ago. That evening he started feeling
very ill, this is the 4th day and he still is not feeling any better. His symptoms
include high fever, chills, severe body ache, and chest pain. Does this sound
like it could be galvanized poisoning? If so should it be lasting 4 days, and
is there anything we can do for it?
UA Local - Lansing, MI.
May 3, 2005. I am
the wife of a welder,, He has been welding on Galvanized steel for the last 4
yrs. He has been pushing for better exhaust for over the last 3 yrs. Now his voice
is very bad, sometimes when he gets home from work you can hardly understand him,,or
hear him from his voice being so bad.. Most morning's he is throwing up before
work. He also says how it feels like something is in the front and side of his
throat. I have been personally there on the weekends with him when he works and
when he is done welding it looks like it is snowing around him from welding galvanized..And
I was wondering just how dangerous it really is for him to be welding and breathing
galvanized.. And if anyone knows what damage he is doing to himself..We have been
married for 22 yrs. and I don't want to loose him to his profession. Any information
anyone can give me would be greatly appreciated.
From Mr Piatkiewicz.
Metal fume fever originating
from zinc is associated with flame cutting or welding operations on galvanized
steels. Any operations that have molten zinc approaching its boiling point, 911
Degrees centigrade, may emit significant amounts of zinc 'fume' which in any event
oxidises rapidly to form zinc oxide. It is this airborne particulate form of zinc
oxide, with a very small diameter (less than 1 micron in size- 1 millionth of
a meter in diameter) which is associated with the onset of metal fume fever. This
fever is as it sounds, with the symptoms of the 'flu'.
There are no known
adverse effects from this fever. However this is not a reason not to avoid these
symptoms! Taking the usual precautions of good working practices, minimising exposure
with good ventilation, using extraction equipment all help.
Galvanizers Association - Sutton Coldfield,
West Midlands, UK.
from Ed. Dear House wife. You have just read a complete BS reply from a biased
source the so called Galvanizers Association. Galvanized applications are terrible
for welding and in many instances no one will give a dam about the galvanized
coating thickness provided to the welder. In one plant that makes galvanized coated
greenhouse parts, I MIG welded the galvanized parts for less than 2 hours looking
at the process variables. I felt sick for the rest of the week. Any weld fumes
that have this immediate impact on a human should be avoided or only welded when
proper ventilation or breathing apparatus is provided. Welders are in short supply
if your husband likes life, tell him to get a job elsewhere.