Category: occupational safety

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occupational safety

Common Occupational Lung and Respiratory Diseases Defined

Exposure to workplace irritants can lead to a vast array of diseases. These diseases may last only as long as the exposure continues or may be chronic conditions that last a lifetime. Certain lung and respiratory illnesses that are caused by occupational exposure to chemicals, dangerous fibers or other substances can cause fatal diseases that currently have no known cure.

Many occupations hold greater risks for exposure due to the location, surrounding environment or nature of the required tasks. It was previously thought that only individuals such as coal miners were exposed to irritants that cause lung disease. This is no longer considered valid as individuals in other industries have been diagnosed with similar illnesses.

Several of the most well know lung diseases associated with occupational exposure are asbestosis, mesothelioma and lung cancer. These diseases were once very rare but have increased as the population of those who were exposed to asbestos on the job ages. Adult onset asthma is also on the rise and many researchers believe this is due to workplace irritants. Other lung and respiratory illnesses have increased in frequency due to the latency period of the disease.

The aging population that is now becoming ill from past workplace exposures is providing valuable information on other dangerous substances.

Asbestosis

Asbestosis is a chronic condition of the lung. This disease develops slowly and often causes suffers to experience shortness of breath and chest pain. Many individuals can no longer live an ordinary life as the tolerance for physical activity decreases. Asbestosis is caused by inhalation of asbestos fibers. These fibers, which lodge into the lining of the lungs cause scarring. This scar tissue prevents the lung from properly inflating causing difficulty breathing. When the exposure to asbestos ends the disease does not progress further. Not every person that is exposed to asbestos gets asbestosis. Researchers believe genetics may play a role. There is no effective treatment for asbestosis and the disease progresses slowly. The occurrence of this disease is difficult to ascertain however, the American Academy of Family Physicians sites 20,000 hospital discharges with this diagnosis in the year 2000.

Categories
epidemiology occupational safety

Statistics

In the United States occupational lung disease is the number one cause of on-the-job illness. This disease tops the list both in frequency and severity yet is, in almost every case, preventable. Over 20 percent of men worldwide have been exposed to some type of dangerous occupational irritant that may cause cancer and 5 to 20 percent of women have experienced similar types of exposure.

Occupational asthma is the most common occupational lung disease in the U.S. and approximately 15-23 percent of all new asthma cases are caused by occupational irritants. Individuals who already suffer from asthma may experience increasing severity of symptoms due to workplace exposures.

According to the American Lung Association the cost associated with occupational illnesses is estimated to be over $45 billion per year. Additional indirect costs may make that number climb as high as $229 billion annually.

Ethnicity of employees also seems to play a part in the statistics of occupational disease. In 2005 African American employees held approximately 30 percent of the 70,000 U.S. textile jobs. These individuals were 80 percent more likely to die from byssinosis, a chronic lung disease caused by dust produced in textile factories, than their Caucasian counterparts. Hispanics are the most likely ethnic group to work in high-risk occupations while those of Asian descent are least likely to hold a job that involves dangerous exposure.

Categories
Asbestos hazards occupational safety

Preventing lung diseases

Preventing occupational lung and respiratory diseases is the most significant way to reduce the number of deaths from these illnesses. The most effective way to prevent these diseases is to avoid inhaling the substances that cause them. Limiting or eliminating exposure to these irritants is the only way to decrease their effects on the body. Some preventive measures recommended by the National Heart, Lung and Blood Institute (NHLBI) include:

  • Wear protective gear such as facemasks, respirators, or other garments that will prevent inhalation of dangerous airborne particles.
  • Follow specific government guidelines in removal or repair of
    dangerous substances such asbestos.
  • Do not smoke cigarettes as the use of tobacco can increase
    the risk of developing lung and respiratory disease.
  • Make routine visits to your physician to have lung function evaluated
    with spirometry.
  • Become familiar with any dangerous substances that may be present in the workplace and know the risks associated with them.

The lungs and the tissue leading to them are the body’s first organs to come into contact with outside air. The lungs are susceptible to many irritants due to the constant breathing in and out. The particles in the air can cause damage and leave individuals permanently disable and sometimes lead to death. The diseases caused by these particles are almost entirely preventable. Using the measures listed above as well as following workplace guidelines may help worker’s avoid these life-changing diseases.

Government agencies also help in the prevention of occupational disease by posing regulations on workplace safety. In 1970 the government established laws that created two national health agencies. The first, the National Institute for Occupational Safety and Health (NIOSH), was formed to oversee and research safety in workplace activities. This agency was established within the U.S. department of Health and Human Services. The second agency was established within the U.S. Department of Labor. The Occupational Safety and Health Administration (OSHA) was designed to set government standards for health and safety in the workplace and also enforce these standards.

NIOSH has created the National Occupational Research Agenda (NORA) which is a comprehensive list of areas that address workplace dangers. This agenda explores toxicology, identifies emerging technology dangers and evaluates how the combinations of substances in the workplace may effect workers. The reports garnered from this research may help to provide insight into new and dangerous substance as they arise.

Occupational irritants are found worldwide and the knowledge of their danger has helped to decrease the occurrence of disease in many industrialized nations. These developed countries such as the United States have begun major prevention programs. Unfortunately, less developed nations are just beginning to see the effects of imported, dangerous materials. It is the hope of world organizations such as the World Health Organization and the International Labor Office to begin prevention programs worldwide to help stop these diseases.

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occupational safety

Occupational diseases

Occupational diseases are those illnesses that occur due to exposure to irritants in the workplace. Occupational illnesses may occur instantaneously due to exposure to toxic chemicals or fumes or may take years to develop due to long-term exposure. Many individuals today are faced with respiratory disease such as adult asthma, chronic obstructive pulmonary disease (COPD) and emphysema. These diseases are life changing and can often be fatal. According to the Center for Disease Control and Prevention (CDC) many of these airway and lung diseases are being contracted on the job. The CDC states that almost 30 percent of adult asthma and COPD may be caused by irritants in the workplace. Over 20 million American workers may be exposed to these dangerous substances each year. In addition to respiratory diseases, individuals may also be exposed to substances that cause lung diseases, such as malignant mesothelioma, obstructive lung disease, lung cancer and a host of other serious illnesses. The American Lung Association cites occupational lung disease as the number one cause of workplace illness. Not all occupational diseases lead to death but a significant amount greatly diminish quality of life.

Many jobs require employees to work in close proximity to dangerous substances. These substances include asbestos and coal dust, which are well known to cause respiratory and/or lung diseases. In addition to these substances, there are many lesser-known irritants that can also be harmful after long-term exposure. Even short-term exposure to some gases or fumes can have long lasting and damaging effects.

Categories
occupational safety

Particulate Air Pollution

Example: the smokestack of a coal plant ejects coal smoke into the air. Water vapor droplets in the clouds can pick up these smoke particles and drop them later in the form of acid rain.

How is particulate air pollution measured?
Due to the different sizes, shapes and chemical compositions of these microscopic particulate air pollution agents, the task of measuring the potential damage that they can do is often an arduous undertaking. Most agencies involved in pollution research and prevention classify these particles by size: fine particles are less than 2.5 microns (10^-6 m) across and inhalable coarse particles are between 2.5 and 10 microns across. To put these measurements into perspective, a human hair is usually between 70 and 100 microns thick; a red blood cell is about 7 microns across.

What are some other sources of particulate air pollution?
According to a study carried out by the US Environmental Protection Agency (EPA), one of the leading sources of fine particulate air pollution is also the oldest: fires. During 2002, EPA estimates put the quantity of fine particulate air pollution originating from fires at well over one million tons. Since man first learned to create a spark and build fires for light, warmth, and comfort, he has also sent untold tons of untreated, unfiltered smoke into the air. While the concern over particulate air pollution may be a recent occurrence, the sources and the issue itself are both as old as civilization, whether the source is a small campfire or a raging forest blaze.

According to the same study, road dust generated over eight hundred thousand tons of fine particulate air pollution, followed by electricity generation at five hundred thousand. Surprisingly, fossil fuel use (coal, oil, kerosene, gasoline) and automobile usage combined for less than four hundred thousand tons, less than a third of the total for fires.

Of course, air pollution is not limited to outdoor sources. Indoor air pollution can also be a major source of particulate air pollution. Dust, sheet rock particles, cigarette smoke and dirty ventilation systems can create fine particles that can contribute to an increase in indoor particulate air pollution.

Categories
Medical news occupational safety

Heavy Cigarette Smoking On the Decline

A recent report from researchers at the University of California at San Diego has revealed that the habit of smoking at least one pack (20 cigarettes) a day has severely declined over the last fifty years. Investigators observed that the rate of decline was particularly noteworthy in California, where lung cancer rates also fell in proportion to the reduction in smoking rates. The data and the corresponding interpretation of the study were printed in the Journal of the American Medical Association’s March 2011 issue.

The UCSD study showed how much smoking has declined since the early 1960s. According to reports, more than fifty percent of all adult smokers in the US smoked at least one pack per day. That number fell to just over forty percent by 2007. “Moderate” smoking (10 to 20 cigarettes a day) rates also fell. In California, the number of moderate smokers fell from 11.1 percent of all adults in 1965, down to 3.4 percent in 2007. In other states, the number fell from 10.5 percent of all adults down to 5.4 percent.

The study credits much of the decline to smoking education programs. In 1964, the US Surgeon General released the first major findings on the correlation between cigarette smoking and lung cancer. Two years later, the Food and Drug Administration required mandatory warning labels on all cigarette packaging. Today, most cigarette packs and cartons carry warning labels, including warnings about how smoking can complicate pregnancy and lead to low birth rates in pregnant women who smoke.

Another factor attributed to the reduction in smoking rates is the development in new technologies to combat nicotine addiction. One of the primary reasons that smokers find quitting so difficult is the intense nicotine addiction that smoking brings. The invention of nicotine patches, lozenges and gums as part of a smoking cessation program has helped millions of smokers quit the habit over the last twenty years.

In addition to federal mandates requiring the addition of warning labels to cigarette packaging, many state and municipal jurisdictions created anti-smoking laws and ordinances. Several states added higher taxes to cigarettes, with California among the first to enact such statutes. Also, many cities passed local laws prohibiting smoking in bars, restaurants and public buildings.

Public awareness campaigns, such as those conducted by the American Heart Association, the American Lung Association and the American Cancer Society, also helped bring the issues of cigarette smoking to the attention of the American public. The campaigns highlighted many of the dangers that surround cigarette smoking, including lung cancer, throat cancer and emphysema.

As California took the lead in many of the anti-smoking efforts, the study also showed how lung cancer incidence rates declined in the state well before other states saw the same results. Deaths from lung cancer peaked in 1987 in California, with 109 per 100,000. The death rate fell to 77 per 100,000 in 2007. In other states, the lung cancer death rate peaked in 1993 at 117 per 100,000 and fell to 102 per 100,000 in 2007.

Sources:
http://www.npr.org/blogs/health/2011/03/16/134597676/heavy-smoking-is-fast-becoming-history?ps=sh_sthdl
http://www.wtma.com/rssItem.asp?feedid=116&itemid=29645079
http://health.usnews.com/health-news/managing-your-healthcare/articles/2011/03/15/heavy-smoking-declines-in-us
http://www.webmd.com/smoking-cessation/news/20110315/heavy-smokers-us-dwindling
http://www.cnn.com/2011/HEALTH/03/15/pack.smokers.now.rare/index.html
http://www.medicalnewstoday.com/articles/219085.php
http://www.latimes.com/health/boostershots/la-heb-california-smoking-20110316,0,5345363.story
http://en.wikipedia.org/wiki/Tobacco_packaging_warning_messages#United_States_of_America

Categories
Medical news occupational safety

Massachusetts Helps Vets Quit Smoking

State health officials in Massachusetts are developing measures to help the state’s military veterans quit smoking.  The new campaign is the second effort launched since 2008 to help veterans with this growing health problem.  Massachusetts Lieutenant Governor Tim Murray released a statement praising “the brave men and women” in uniform and said that the campaign would help to “provide (veterans) with the opportunity to live long, healthy lives”.

A report from the office of Governor Deval Patrick showed that nearly one-fourth of all Massachusetts veterans smoke cigarettes.  The US Centers for Disease Control and Prevention in Atlanta estimates that less than one-sixth of all adults in the Bay State smoke.  A related report from the Institute of Medicine showed that nearly one in three people on active military duty smoke, with the number rising to half or more among those veterans who have been deployed to war zones in Iraq and Afghanistan.

Coleman Nee, a veteran of the US Marine Corps during Operation Desert Storm in 1991, is now the Massachusetts Secretary of Veterans’ Services.  Mr. Nee also spoke out about the anti-smoking campaign, saying that smoking among veterans is “a very serious problem”.  He said that smoking is an issue for veterans’ services agencies as well as public health groups.  He called the addiction to smoking among service members “a real shame”.

Mr. Nee recalled that, during his time in the Marine Corps, he and other service personnel would receive cigarettes and smokeless tobacco as part of their care packages from home, a tradition that started back in World War I.  He remarked that this practice has since stopped; especially in light of the numerous health problems that smoking is now understood to cause.

A report from the state public health office revealed that cigarette smoking is the number-one cause of preventable disease and death in Massachusetts.  The report also estimates that health care costs for smokers add up to over $4.3 billion annually.

The public awareness campaign for veterans includes a toll-free number that offers support and information on smoking cessation programs.  When the first campaign started in 2008, thousands of veterans called the support hotline and obtained nicotine patches to help them quit the habit.  Massachusetts State Representative James E. Valle, chairman of the Joint Committee on Veterans and Federal Affairs, said that the program shows the state’s commitment to “helping those who have served” in uniform to lead healthier lives.

The moves to help veterans quit smoking come in light of a study commissioned by the Department of Defense in 2009.  The study examined the feasibility of banning smoking among all service personnel within the next decade.  All military bases prohibit smoking indoors, but the study also considers banning the sale of tobacco products on bases, as well as stopping troops in the field from smoking.

However, some military personnel are opposed to any ban on smoking.  Many see smoking as a stress reliever, especially during the heat of battle.  The Defense Department study also found that bases generate millions of dollars from tobacco sales, most of which goes toward covering the costs of programs for dependents and for recreation.

Sources:
http://www.wwlp.com/dpp/news/massachusetts/veterans-receive-help-to-stop-smoking
http://www.boston.com/news/local/massachusetts/articles/2011/03/08/veterans_get_help_to_quit_smoking/
http://articles.cnn.com/2009-07-12/us/military.smoking.ban_1_smokeless-tobacco-tobacco-sales-pancreatic?_s=PM:US

Categories
Asbestos hazards occupational safety

New Polymer Test Improves Lung Cancer Diagnosis, Says Experts

A new technique used for testing for the presence of lung cancer could potentially reduce diagnosis time from six months to four weeks, according to researchers at the National Institute of Standards and Technology (NIST).

This dramatic improvement in diagnosis time comes courtesy of a three-dimensional testing technique known as volumetrics. The procedure involves taking numerous CT scans from a variety of angles to produce a 3-D cross sectional image of the internal body. Through early research, the NIST team found that CT scan accuracy and amount of time needed to identify signs of lung cancer increased dramatically compared to current testing techniques.

To achieve these advancements, the research team used volumetrics to identify polymer-silicate ellipsoids present on the lungs. These polymer growths look similar in shape to a medical pill and range in diameter from four to 11 mm. As lead researcher Zachary Levine indicates, ” For diagnosis in the earliest stage of cancer, other studies have shown this is the size of nodule you want to be looking at.”

Presently, the most widely lung cancer diagnosis procedure is something known as RECIST. This process involves measuring the distance across suspect lung nodules as they are displayed in two-dimensional format. If a nodule is identified within a certain size range, then it may warrant additional tests to confirm lung cancer.

Through clever comparison tests, the team was able to show that volumetrics are capable of identifying signs of lung cancer that are ten time smaller than those visible via RECIST. According to Levine, “This implies that you could notice life-threatening changes from a follow-up scan performed only weeks after the first, instead of months.”

One potential downside of the new diagnosis technique is the fact that lung cancer does not always grow in the shape of elliptical pills. As such, diagnosis of certain cancer cases may remain more difficult.

Sources: http://www.newstrackindia.com/newsdetails/161031 http://www.nist.gov/pml/div685/ct_042710.cfm

Categories
Asbestos hazards occupational safety

British Contractor Fined for Illegal Asbestos Removal

A judge at the Caerphilly Magistrates’ Court fined a building contractor £2,500 (US$3,893) for disregarding regulations governing asbestos remediation. Ron Couch Building Contracts Ltd. of Pontypool paid the fine after pleading guilty to two counts of violating the country’s Control of Asbestos Regulations. The firm was accused of taking on asbestos removal projects without a license.

According to reports, workers were replacing a boiler in a central heating unit at a private home. One of the workers was said to have detached a door containing asbestos-laced insulation to make room to move the old boiler. Another contracting firm working on a nearby project had an asbestos specialist on site. The asbestos specialist noticed the door sitting outside the house, saw the asbestos and alerted authorities to the danger. The magistrate also ordered the company to pay £1,250 (US$1,947) to cover cleanup costs.

Steve Richardson, who works with the British Health and Safety Executive (HSE) as an inspector, said that the Ron Couch project managers were “well aware” of the legal requirements surrounding asbestos removal projects. Mr. Richardson said that the firm had previously carried out a similar project involving a boiler flue. In that project, they followed the regulations on asbestos remediation and employed licensed specialists to handle the toxic insulation.

Mr. Richardson also said that the process used to remove the door exposed its edge. The door contained asbestos insulation board, also called AIB. Once the insides of the door were exposed, the asbestos insulation board inside would have been disturbed. When asbestos-containing materials are disturbed, the microscopic asbestos fibers become airborne and create a health hazard. Workers who handle asbestos are required to wear protective breathing masks and special coveralls to prevent exposure to the fibers.

Scientific studies have established a link between asbestos exposure and lung disease. The most serious disorder related to asbestos exposure is pleural mesothelioma, a type of cancer that targets the soft tissue surrounding the lungs. Recent reports from public health officials state that mesothelioma and other asbestos-related diseases are the number-one workplace killer among Britons. Mesothelioma also has a long latency period, so the number of deaths from the disease is expected to rise for the next ten to twenty years.

In 2006, the HSE updated the Control of Asbestos Regulations. The new rules stated that commercial property owners must conduct asbestos assessments on their buildings. These assessments should include the likelihood of asbestos exposure and methods for any future asbestos remediation. Violators may face up to two years in prison. The successful prosecution of these violations is the latest sign that the HSE and other British agencies are getting tough on asbestos.

Asbestos was banned in Britain in 1999, but many of the country’s buildings constructed over the last century still contain asbestos. The mineral was widely used in construction applications such as insulation, fireproofing, and concrete mixing. The source mineral was cheap and plentiful. Its fibers were lightweight and could withstand extreme temperatures, which made it a highly desired material in the construction trades.

Sources: safetysignsupplies.co.uk, theconstructionindex.co.uk, access-legal.co.uk

Categories
occupational safety

EPA’s “Most Wanted” Fugitive Captured

Officials with the US Marshals Service and the Environmental Protection Agency captured escaped fugitive Albania Deleon last week in the Dominican Republic. Ms. Deleon was convicted of issuing certificates for an asbestos-remediation training class to unqualified applicants. She had fled the country prior to her sentencing hearing in March. When she failed to appear, US District Judge Nathaniel Gorton issued a bench warrant for her arrest.

Cynthia Giles, assistant administrator for EPA’s Office of Enforcement and Compliance Assurance, said that Ms. Deleon “put communities at risk” by issuing hundreds of the false certifications. She credited the teamwork of the US Attorney’s Office, the Marshals Service, EPA special agents and Dominican law enforcement for tracking down and capturing Ms. Deleon. Carmen Ortiz, a prosecutor with the US Attorney’s Office, also credited both American and Dominican agencies in insuring that Ms. Deleon “will at last face punishment” for her crimes.

Ms. Deleon was convicted on more than twenty offenses in November 2008. The crimes include mail fraud, accessing fraudulent payroll tax documents, encouraging illegal aliens to live in the US, conspiracy to make false statements to government officials, and making false statements to the EPA. She also now faces potential charges of resisting arrest, fleeing the country and defaulting on her bail agreement.

From 2001 to 2006, Ms. Deleon owned a training company called Environmental Compliance Training. The school received certification from both the EPA and the state of Massachusetts. The company also offered four-day training classes in asbestos handling, removal and cleanup processes. However, many of ECT’s clients did not attend the classes and did not receive the proper training for dealing with the dangerous material. Instead, Ms. Deleon issued the certificates and falsified final exam results.

Investigators later found that many of the ECT clients that received the false certificates were illegal aliens. The illegal workers would often skip the class sessions in order to work at other jobs while the instructors carried out the lessons. The workers would then use the certificates to get better-paying jobs on asbestos remediation projects, although they were not qualified and often did not use the proper safety protocols.

An inspection of ECT’s records showed that up to eighty percent of the certificates Ms. Deleon issued were to students who did not complete the class. She also used her temporary employment agency, Methuen Staffing, to employ many of the illegal workers who came to her for certification. Methuen Staffing provided workers for many asbestos removal projects throughout New England.

Ms. Deleon was also convicted of creating false tax statements, as she would often pay the workers in cash or by other means in order to avoid filling out tax documentation. Instead, she only reported the employees whose taxes she withheld. Investigators estimated that she saved her business well over a million dollars in taxes and workers’ compensation insurance payments by keeping the illegal workers off the books.

Deleon is still in the Dominican Republic, but faces up to twenty years in prison on each count of mail fraud and five years on every other count when she is extradited back to the US.

Sources: EPA website, Boston Herald