Thursday, May 31, 2012

Protecting Your Business Name

Think you have a clever name for your business? Good! But you also need to make sure that name isn't being used by someone else--and that you protect it once you're sure it's yours to keep.

Choosing a business name can be one of the most gratifying tasks in the startup phase, but naming your business is unfortunately more complicated than simply picking a clever name for your startup. The issues surrounding the choice of a name generally fall into two categories: mandatory government requirements for registration of business names and optional registrations that provide more comprehensive name protection.

Required Registrations

1. Trade or fictitious name. If you'll be using a name for your business other than your personal name, you'll want to register it to ensure that other businesses can't use the name you've chosen. This registration process will also help you avoid legal problems with competitors by keeping you from choosing a name that's confusingly similar to that of another business. Registration of an assumed or fictitious name is also referred to as a "doing business as" or dba. In most states, this registration is done at the county level by filling out a short form and paying a small fee.

Usually a sole proprietorship or a partnership requires such a registration, but it may also be required of a corporation if the company will be operating under both the corporate name and a dba. For example, if you've incorporated your business as the XYZ Corporation but will be operating as the Sunshine Bakery, you'll need to register the Sunshine Bakery as a dba unless, of course, your first name is Sunshine and your last name is Bakery.

2. Incorporating. As part of the process of incorporating, you'll be registering your corporate name with the secretary of state in the state you'll be doing business. This registration process will reveal whether any other business has a confusingly similar corporate name. Following the filing of your corporate papers, you have the right and the obligation to use the corporate name throughout the state in which you filed.

However, you don't have the exclusive right to the name because other unincorporated businesses may already be using it as a trade name, and other businesses may be using the name as a trade or service mark. In other words, your registration has provided you with the exclusive right to use XYZ Inc. That is, your corporate name with the corporate designation such as Incorporated or Inc., Corporation or Corp., Company or Co., Limited or Ltd. is protected.

However, depending on the situation, prior use of the name as a dba, trade or service mark by another business may prevent your use of the corporate name if use of the name will confuse customers. Therefore, it's always wise to conduct a name search using governmental and nongovernmental sources such as telephone books, city directories and industry trade publications for your industry.

Optional Registrations

Whether you seek additional name protection beyond what's required for your business or your products or services depends for the most part on the size of your business and whether you might operate beyond your local geographic area. It's a good idea to conduct a wider name search before choosing a name for your business if you anticipate operating regionally or nationally in the future. To do so, you should conduct a search of the federal register of trade and service marks. You may refer to www.uspto.govfor the patent and trademark office information. If you conclude that the name you've chosen is available, you should look into registering the name as a business trademark or service mark. Although there's a cost attached to these registrations, it's far more costly to have to change a business, product or service name in "midstream" because you've infringed on someone else's name.

Trademarks or service marks consist of two parts: the noun that tells what kind of product or service you're talking about (for example tissues), and the descriptive word or words that identify it as being different from all others (Kleenex). The best trademarks or service marks are those such as Kleenex that are coined words because they're distinctive, and you can keep others from using them. If you're using a mark, be sure to:
  • Capitalize the first letter.
  • State on your packaging and/or advertising that your company owns the mark.
  • If you've registered the mark, use an R with a circle around it to indicate this.
  • If you've registered the mark only within your state or not at all, use the letters TM for trademark or SM service mark to indicate your ownership.
  • Enforce your rights by notifying other businesses or the media if they're improperly using your mark.
Like every other business decision, the issues surrounding business names can be complicated, and it's always wise to seek information and assistance. In addition to books and websites, you may want to visit your local Small Business Development Center for individualized consulting assistance at no charge.

Thursday, May 24, 2012

Safety Mobile Phone:Heavy Use of Mobile Phones Increases Cancer Risk, Study Finds

Heavy users of wireless mobile phones face increased risks of developing severe brain tumors, according to the most comprehensive study ever conducted on the possible link between cancer and the long-term use of cellular telephones.

Researchers at the Swedish National Institute for Working Life and the University of Oerebro compared the mobile phone use of 4,400 people—half of them cancer patients, and the other half healthy people who made up the control group—and made some disturbing discoveries. [The U.S. Food and Drug Administration has since questioned the results of this study. For information, see FDA Questions Results of Study Linking Mobile Phones and Cancer.]

Heavy Mobile Phone Use Increases Cancer Risk

According to Kjell Hansson Mild, who led the study, heavy users of mobile phones have a 240 percent increased risk of developing a malignant tumor on the side of the head where they press the phone to their ear.

Published in the International Archives of Occupational and Environmental Health, the study defines “heavy use” as 2,000 hours of mobile phone use in the course of a decade, which "corresponds to 10 years' use in the work place for one hour per day."

Of the 2,200 cancer patients in the study, who ranged in age from 20 to 80 years old, 905 had a malignant brain tumor and just under one-tenth of that number were heavy mobile phone users.

"Of these 905 cases, 85 were so-called high users of mobile phones, that is they began early to use mobile and/or wireless telephones and used them a lot," said the authors of the study in a statement issued by the Institute.

In addition, the study concluded that early users, defined as people who started using a mobile phone before age 20, are also at greater risk of developing a malignant brain tumor.

The study also took into account factors such as smoking habits, working history and exposure to other known cancer-causing agents.

Limit Mobile Calls and Use Handsfree Options

Hansson Mild advised that the best ways for consumers to lower their risk of cancer related to mobile phones are to use their wireless phones less frequently and to use handsfree options when they do make or receive mobile calls. He said the research report about the study is not intended to cause public alarm or to raise concerns about widespread risk for the majority of people who use mobile phones.

"It does however give reason to use caution when calling on wireless phones,” he said in an interview with Dow Jones. “Use handsfree and avoid wireless when possible.”

Swedish Study Breaks New Ground

The Swedish study is the first to show a significant link between long-term mobile phone use and cancer. Previous studies found no evidence that radiation from mobile phones is harmful, but those earlier studies looked at mobile phone use among fewer people over a shorter time.

The Swedish study is the largest and most comprehensive to date. Also, people in Sweden have been using mobile phones since 1984, longer than people in many other countries, so getting a large sample of people who have been using cellular telephones for a long time was relatively easy.

Wednesday, May 23, 2012

Phone Safety:Cell Phone Recycling: How to Recycle Your Old Cell Phone

As cell phones proliferate they are giving computers and monitors some competition for the dubious distinction as the largest contributor to the world’s growing e-waste problem. Indeed, toxin-laden electronics are clogging landfills and polluting air and groundwater supplies from coast to coast.

Cell Phones are Among the Fastest Growing Types of Trash

The average North American gets a new cell phone every 18 to 24 months, making old phones—many that contain hazardous materials like lead, mercury, cadmium, brominated flame retardants and arsenic—the fastest growing type of manufactured garbage in the nation. According to the U.S. Environmental Protection Agency (EPA), Americans discard 125 million phones each year, creating 65,000 tons of waste.

Convenient Recycling Support for Cell Phone Users

Luckily, a new breed of electronics recyclers is stepping in to help. Call2Recycle, a nonprofit organization, offers consumers and retailers in the United States and Canada simple ways to recycle old phones. Consumers can enter their zip code on the group’s website and be directed to a drop box in their area. Most major electronics retailers, from Radio Shack to Office Depot, participate in the program and offer Call2Recycle drop-boxes in their stores. Call2Recycle recovers the phones and sells them back to manufacturers, which either refurbish and resell them or recycle their parts for use in making new products.

Recycling Cell Phones for Charity and to Help Developing Countries

The CollectiveGood organization takes used cell phones, refurbishes them, and then re-sells them to distributors and carriers for use primarily in developing countries, providing affordable communications to poorer citizens while helping to “bridge the digital divide.” They also recycle all non-functioning batteries through a partnership with the Rechargeable Battery Recycling Corporation. When you donate your phone to CollectiveGood you can direct the profits from the sales to a charity of your choice.

Changing Attitudes about Cell Phone Recycling

Another player is ReCellular, which manages the in-store collection programs for Bell Mobility, Sprint PCS, T-Mobile, Best Buy and Verizon. The company also maintains partnerships with Easter Seals, the March of Dimes, Goodwill Industries and other nonprofits that undertake cell phone collection drives as a way of funding their charitable work. According to ReCellular vice-president Mike Newman, the company is trying to change attitudes about used cell phones, to get consumers to “automatically think of recycling cell phones just as they currently do with paper, plastic or glass.

States and Provinces Lead the Way on Mandatory Cell Phone Recycling

Neither the United States nor Canada mandates electronics recycling of any kind at the federal level, but a few states and provinces are getting into the act at their own initiative. California recently passed the first cell phone recycling law in North America. As of July 1, 2006, electronics retailers doing business there must have a cell phone recycling system in place in order to legally sell their products, whether online or in-store. Other U.S. states considering similar legislation include Illinois, Mississippi, New Jersey, New York, Vermont and Virginia, while the Canadian provinces of British Columbia, Alberta, Saskatchewan and New Brunswick are likely to jump on the mandatory cell phone recycling bandwagon soon.

GOT AN ENVIRONMENTAL QUESTION? Send it to: EarthTalk, c/o E/The Environmental Magazine, P.O. Box 5098, Westport, CT 06881; submit it at: www.emagazine.com/earthtalk/thisweek/, or e-mail: earthtalk@emagazine.com.

Tuesday, May 22, 2012

Are Cell Phones and Microwave Radiation Really Unhealthy? :Seo Safety

Since the middle of the last century, technological advancements in telecommunications and other industries have led to significant increases in the use of radio frequencies. Equipment employing microwave and radio waves is today widely used not just in broadcasting and communications, but also in the health care industry, the food industry, and in a host of other industries in a wide range of applications.

Evidence Raises Concerns About Cell Phones and Microwave Exposure

Health advocates have worried for decades that exposure to frequencies emanating from these many sources might be harmful. And the ubiquity of such technology today--especially considering the quantum leap in cell phone usage in recent years--only makes such concerns that much more pressing.

How Do Cell Phones Affect Your Health?

Various studies researching the health effects of cell phone use have yielded mixed results. Some studies suggested a link between exposure to radiation from cell phones and an increased risk of acoustic neuroma--a tumor of the nerve connecting the ear to the brain--but more recent research found no such links.

The issue is primarily heat. According to the Occupational Safety and Health Department of the Communication Workers of America (CWA), “As high frequency radio frequency radiation…penetrates the body, the exposed molecules move about and collide with one another causing friction and, thus, heat…If the radiation is powerful enough, the tissue or skin will be heated or burned.”

According to CWA, “there is substantial scientific data that establishes negative health effects associated with microwave radiation.” CWA cites cataracts as one possible negative health effect from prolonged exposure, as well as well as nervous system damage and even reproductive problems in both males and females. This issue was in the news in 1992 over the issue of the safety of police radar devices, but subsequent studies were inconclusive.

Young Cell Phone Users May See Negative Effects in Middle Age As to cell phones, the results of a study recently published in the academic journal Environmental Health Perspectives do not bode well for habitual chatterers. Researchers documented brain damage in laboratory rats exposed to radio frequencies from cell phones at levels comparable to what people would experience during normal use. The study’s authors expressed concern that “after some decades of (often) daily use, a whole generation of [cell phone] users may suffer negative effects, perhaps as early as middle age.”

How Do Cell Phones Affect the Environment?

The environmental effects of radio frequencies are also largely unclear. Migrating birds have been known to fly right into cell phone and other communications towers. Some blame the radiation emanating from such towers for disorienting the birds and undermining their navigational abilities. Others chalk such incidents up to poor visibility associated with bad weather and nothing more.

Some farmers have observed that cows grazing near cell towers are more likely to experience still births, spontaneous abortions, birth deformities and behavioral problems, not to mention general declines in overall health. Moving cattle herds away from such towers has reportedly led to immediate health improvements.

GOT AN ENVIRONMENTAL QUESTION? Send it to: EarthTalk, c/o E/The Environmental Magazine, P.O. Box 5098, Westport, CT 06881; submit it at: www.emagazine.com/earthtalk/thisweek/, or e-mail: earthtalk@emagazine.com.

Monday, May 21, 2012

safety cell phone : seosafety


Cell phones are almost as common as pocket change these days. It seems nearly everyone, including an increasing number of children, carries a cell phone wherever they go. Cell phones are now so popular and convenient that they are surpassing landlines as the primary form of telecommunication for many people.

Is Growing Cell-Phone Use Increasing Health Risks?

In 2008, for the first time, Americans are expected to spend more on cell phones than on landlines, according to the U.S. Labor Department. And we not only love our cell phones, we use them: Americans racked up more than a trillion cell-phone minutes in the first half of 2007 alone.

Yet, as cell-phone use continues to grow, so does concern about the possible health risks of prolonged exposure to cell-phone radiation.

Do Cell Phones Cause Cancer? Wireless cell phones transmit signals via radio frequency (RF), the same kind of low-frequency radiation used in microwave ovens and AM/FM radios. Scientists have known for years that large doses of high-frequency radiation—the kind used in X-rays—causes cancer, but less is understood about the risks of low-frequency radiation.

Studies on the health risks of cell-phone use have produced mixed results, but scientists and medical experts warn that people should not assume no risk exists. Cell phones have been widely available for only the past 10 years or so, but tumors may take twice that long to develop.

Because cell phones haven’t been around very long, scientists haven’t been able to assess the effects of long-term cell-phone use, or to study the effects of low-frequency radiation on growing children. Most studies have focused on people who have been using cell phones for three to five years, but some studies have indicated that using a cell phone an hour a day for 10 years or more can significantly increase the risk of developing a rare brain tumor.

What Makes Cell Phones Potentially Dangerous? Most RF from cell phones comes from the antenna, which sends signals to the nearest base station. The farther the cell phone is from the nearest base station, the more radiation it requires to send the signal and make the connection. As a result, scientists theorize that the health risks from cell-phone radiation would be greater for people who live and work where base stations are farther away or fewer in number—and research is beginning to support that theory.

In December 2007, Israeli researchers reported in the American Journal of Epidemiology that long-term cell-phone users who live in rural areas face a "consistently elevated risk" of developing tumors in the parotid gland compared with users who live in urban or suburban locations. The parotid gland is a salivary gland located just below a person’s ear.

And in January 2008, the French Health Ministry issued a warning against excessive cell phone use, especially by children, despite the lack of conclusive scientific evidence linking cell-phone use with cancer or other serious health effects. In a public statement, the ministry said: "As the hypothesis of a risk cannot be entirely excluded, precaution is justified."

How to Protect Yourself from Cell-Phone Radiation “Precaution” seems to be the approach recommended by an increasing number of scientists, medical experts and public health agencies, from the French Health Ministry to the U.S. Food and Drug Administration (FDA). General recommendations to minimize the potential health risks include talking on cell phones only when necessary, and using a hands-free device to keep the cell phone away from your head.

If you’re concerned about your exposure to cell-phone radiation, the Federal Communications Commission (FCC) requires manufacturers to report the relative amount of RF absorbed into a user’s head (known as the specific absorption rate, or SAR) from every type of cell phone on the market today. To learn more about SAR and to check the specific absorption rate for your phone, check the FCC website.

Sunday, May 20, 2012

Safety Google : General Tractor Safety



Guidelines for Safe Tractor Operations
  1. Be sure the tractor is properly serviced. Check lubrication, fuel and water. Check the radiator level when the tractor is cold. If you must check it when hot, use extreme care.
  2. Never refuel your tractor while the engine is running. Static electricity, a spark from the ignition system, or a hot exhaust can cause the fuel to ignite. To reduce the static electricity problem, ground the tractor with a ground wire or by dropping mounted equipment so it contacts the ground.
  3. Always fuel your tractor outside and store your fuel outside. Store fuel at least 40 feet from any building. Keep the area free of weeds or other burnable material.
  4. Carry a first aid kit and approved dry chemical extinguisher. Tractors should have at least a five-pound extinguisher.
  5. Be sure of good ventilation before starting the tractor engine. Exhaust gases contain carbon monoxide, which is odorless, colorless and deadly.
  6. Keep small children away from tractors. Tractors are designed to carry only one person -- the driver. Each year small children are killed by falling from the tractor. Their chance of being killed is just as great when they are allowed to ride on trailing equipment.
  7. Keep wheels spread wide whenever possible. A tractor will overturn sideways much more easily if the wheels are close together. When wheels must be moved in for narrow row farming, use extra caution, especially when traveling at higher speeds on roads.
  8. Reduce speed before turning. Doubling the speed of a farm tractor quadruples the danger of upsetting sideways. Centrifugal force tries to keep the tractor in a straight line. If you try to turn at a high rate of speed, the tractor will attempt to go straight rather than turn.
  9. Reduce speed when using a loader. A loader in the raised position can increase the possibilities of overturns. Keep the loader as close to the ground as possible. Be alert for ditches, rocks or holes that might cause the tractor to overturn. The center of gravity is affected if the load is kept too high in the air.
  10. Stop the engine before getting off the tractor. Operators can be killed by a tractor when the tractor has been left running with the operator off the seat, leaving when it has been put in gear, parked, or had the brakes locked.
  11. Never hitch to the axle or other high point. Always hitch to the drawbar, take up slack slowly, and never jerk on chains or cables. Broken parts of a chain can act like shrapnel, and a cable can cut the legs from under a person. Nylon ropes have killed tractor operators and bystanders when the rope broke away from an implement. The stored energy in the rope catapults the rope end into the victim. Tractors also can upset backwards when pushing or using a front end loader, or when hitched to the front end by chains or cables that pass under the back axle. Keep the hitch as low as possible, preferably 17 inches. Never get above 21 inches.
  12. Be extremely careful when driving up an incline. A tractor can upset if the center of gravity moves behind where the rear wheels are in contact with the ground. Try to back up if it's necessary to get up the incline. If you get caught on a steep incline, back down very slowly and apply the brakes lightly. Weight on the front of the tractor will help.
  13. Disengage the power take-off when it's not in use. Use the power shield whenever equipment is in use. If you do not have a PTO shield, make one -- it may save your life.
  14. Do not wear loose clothing while operating a tractor. Loose clothing can catch on moving parts and cause an accident.
  15. Keep the tractor in gear when going down hill. This allows the tractor engine to serve as a brake. In Nebraska, it's unlawful to coast down a hill with the vehicle out of gear. Some tractors may have "free wheeling" in their transmission drive. Make sure this type of transmission is put in direct drive before attempting to use the engine as a brake.
  16. Engage the clutch gently, especially when going uphill. "Jackrabbit" starts are dangerous to both the operator and the tractor.
  17. Never attach a post or log to the rear wheels when the tractor is stuck in the mud. If the wheels are not free to turn, the tractor can pivot around the axle and upset. Try to back out. If this does not work, get another tractor to pull you out.
  18. Follow all traffic rules on open roads. This includes proper lighting, hand signals, right-of-way, etc. Tractors may not use interstate highways.
  19. Do not use a tractor for a job it wasn't designed to do. The tractor was designed as a source of power to do field work. It was not designed for chasing cattle, drag racing, or transportation to and from town.
Safety Rules When Using Tractor Attachments
  • Keep all shields and guards in place. Do not operate equipment with missing shields or guards.
  • Shut off engine and be sure implement motion has stopped before performing adjustments or maintenance.
  • For some attachments, use counterweight for stability.
  • Lift rear-mounted attachments and drive slowly when making sharp turns.
  • Raise and lower attachments slowly and smoothly.

Saturday, May 19, 2012

FDA Safety:FDA Questions Results of Study Linking Mobile Phones and Cancer

The U.S. Food and Drug Administration is questioning the results of a Swedish study that claims to provide the first scientific evidence of an increased risk of brain cancer among people who use mobile phones.

Swedish researchers reported in March 2006 that the heavy use of mobile phones over a long period can increase the risk of malignant brain tumors by as much as 240 percent. [See, “Heavy Use of Mobile Phones Increases Cancer Risk, Study Finds”]

FDA Questions Study Findings and Methods

In a statement published on its Web site, the FDA said these findings “are difficult to interpret” and contradict a number of earlier studies that found no definitive link between cancer and mobile phone use. The FDA also questioned the methods used in the Swedish study, which relied on mailed questionnaires and follow-up telephone interviews rather than in-person evaluations.

The FDA said it “plans to convene a meeting in the near future to evaluate research conducted to date in this area and identify gaps in knowledge that warrant additional research.” No date was given for when that meeting might take place. The agency said it also “continues to monitor studies looking at possible heath effect resulting from exposure to radio frequency energy.”

Wireless Industry Welcomes FDA Skepticism About Study

An representative for the mobile phone industry, interviewed by Reuters, said most scientists already have concluded wireless mobile phones are safe.

"When you objectively look at the enormous body of science that exists, you have to conclude that there is no evidence of adverse health effects," said Joe Farren, spokesman for CTIA, a wireless industry trade association.

No Study Offers Conclusive Proof of Mobile Phone Danger or Safety

What both the FDA and the mobile phone industry failed to say, however, is that while no previous studies have shown a clear link between mobile phone use and increased risk of brain cancer, neither have they ruled it out.

Mobile phones have quickly become a common form of communication for people worldwide--perhaps too quickly to accurately assess the long-term health effects. In the United States alone, the number of mobile phone users reached 208 million in 2005, up from 340,213 in 1985, according to CTIA.

In the absence of irrefutable proof that prolonged exposure to radiation from mobile phones does not pose a health risk, it seems reasonable to take precautions. And that’s what the authors of the Swedish study advised in their published report and subsequent interviews with the news media.

Exercise Caution When Using Mobile Phones

According to Kjell Hansson Mild, who led the study, the research report is not intended to cause public alarm or to raise concerns about widespread risk for the majority of people who use mobile phones.

"It does however give reason to use caution when calling on wireless phones,” he said in an interview with Dow Jones.

Hansson Mild advised that the best ways for consumers to lower their risk of cancer related to mobile phones are to use their wireless phones less frequently and to use hands-free options when they do make or receive mobile calls.

Friday, May 18, 2012

What is Hot Tapping ? : safety/hot-tapping


What is a Hot Tap and why it is made?

Hot Taps or Hot Tapping is the ability to safely tie into a pressurized system, by drilling or cutting, while it is on stream and under pressure.

Typical connections consist:
  • Tapping fittings like Weldolet®, Reinforced Branch or Split Tee.
  • Split Tees often to be used as branch and main pipe has the same diameters.
  • Isolation Valve like gate or Ball Valve.
  • Hot tapping machine which includes the cutter, and housing.
Mechanical fittings may be used for making hot taps on pipelines and mains provided they are designed for the operating pressure of the pipeline or main, and are suitable for the purpose.
  • Design: ANSI B31.1, B31.3, ANSI B31.4 & B31.8, ASME Sec. VIII Div.1 & 2
  • Fabrication: ASME Sec. VIII Div.1
  • Welding: ASME Sec. IX
  • NDT: ASME Sec. V
There are many reasons to made a Hot Tap. While is preferred to install nozzles during a turnaround, installing a nozzle with equipment in operation is sometimes advantageous, especially if it averts a costly shut down. 

Remarks before made a Hot Tap
  • A hot tap shall not be considered a routine procedure, but shall be used only when there is no practical alternative.
  • Hot Taps shall be installed by trained and experienced crews.
  • It should be noted that hot tapping of sour gas lines presents special health and metallurgical concerns and shall be done only to written operating company approved plans.
  • For each hottap shall be ensured that the pipe that is drilled or sawed has sufficient wall thickness, which can be measured with ultrasonic thickness gauges. The existing pipe wall thickness (actual) needs to be at least equal to the required thickness for pressure plus a reasonable thickness allowance for welding. If the actual thickness is barely more than that required for pressure, then loss of containment at the weld pool is a risk.
  • Welding on in-service pipelines requires weld procedure development and qualification, as well as a highly trained workforce to ensure integrity of welds when pipelines are operating at full pressure and under full flow conditions. 

Hot Tap setup

For a hot tap, there are three key components necessary to safely drill into a pipe; the fitting, the Valve, and the hot tap machine. The fitting is attached to the pipe, mostly by welding. In many cases, the fitting is a Weldolet® where a flange is welded, or a split tee with a flanged outlet (see image above).

Onto this fitting, a Valve is attached, and the hot tap machine is attached to the Valve (see images on the right). For hot taps, new studbolts, gaskets and a new Valve should always be used when that components will become part of the permanent facilities and equipment.

The fitting/Valve combination, is attached to the pipe, and is normally pressure tested. The pressure test is very important, so as to make sure that there are no structural problems with the fitting, and so that there are no leaks in the welds.

The hot tap cutter, is a specialized type of hole saw, with a pilot bit in the middle, mounted inside of a hot tap adapter housing.

The hot tap cutter is attached to a cutter holder, with the pilot bit, and is attached to the working end of the hot tap machine, so that it fits into the inside of the tapping adapter. The tapping adapter will contain the pressure of the pipe system, while the pipe is being cut, it houses the cutter, and cutter holder, and bolts to the Valve.

Hot Tap operation

The Hot Tap is made in one continuous process, the machine is started, and the cut continues, until the cutter passes through the pipe wall, resulting in the removal of a section of pipe, known as the "coupon". The coupon is normally retained on one or more u-wires, which are attached to the pilot bit. Once the cutter has cut through the pipe, the hot tap machine is stopped, the cutter is retracted into the hot tap adapter, and the Valve is closed.

Pressure is bled off from the inside of the Tapping Adapter, so that the hot tap machine can be removed from the line. The machine is removed from the line, and the new service is established.

Hot Tap Coupon

The Coupon, is the section of pipe that is removed, to establish service. It is very highly desirable to "retain" the coupon, and remove it from the pipe, and in the vast majority of hot taps, this is the case. Please note, short of not performing the hot tap, there is no way to absolutely guarantee that the coupon will not be "dropped".

Coupon retention is mostly the "job" of the u-wires. These are wires which run through the pilot bit, and are cut and bent, so that they can fold back against the bit, into a relief area milled into the bit, and then fold out, when the pilot bit has cut through the pipe.

In almost all cases, multiple u-wires are used, to act as insurance against losing the coupon.

Line Stopping

Line Stops, sometimes called Stopples (Stopple® is a trademark of TD Williamson Company) start with a hot tap, but are intended to stop the flow in the pipe. Line Stops are of necessity, somewhat more complicated than normal hot taps, but they start out in much the same way. A fitting is attached to the pipe, a hot tap is performed as previously detailed. Once the hot tap has been completed, the Valve is closed, then another machine, known as a line stop actuator is installed on the pipe. The line stop actuator is used to insert a plugging head into the pipe, the most common type being a pivot head mechanism. Line stops are used to replace Valves, fittings and other equipment. Once the job is done, pressure is equalized, and the line stop head is removed. The Line Stop Fitting has a specially modified flange, which includes a special plug, that allows for removal of the Valve. There are several different designs for these flanges, but they all work pretty much the same, the plug is inserted into the flange through the Valve, it is securely locked in place, with the result that the pressure can be bled off of the housing and Valve, the Valve can then be removed, and the flange blinded off.

Line Stop setup

The Line Stop Setup includes the hot tap machine, plus an additional piece of equipment, a line stop actuator. The Line Stop Actuator can be either mechanical (screw type), or hydraulic, it is used, to place the line stop head into the line, therefore stopping the flow in the line.

The Line Stop Actuator is bolted to a Line Stop Housing, which has to be long enough to include the line stop head (pivot head, or folding head), so that the Line Stop Actuator, and Housing, can be bolted to the line stop Valve. Line stops often utilize special Valves, called Sandwich Valves.

Line Stops are normally performed through rental Valves, owned by the service company who performs the work, once the work is completed, the fitting will remain on the pipe, but the Valve and all other equipment is removed.

Line Stop operation

A Line Stop starts out the same way as does a Hot Tap, but a larger cutter is used,. The larger hole in the pipe, allows the line stop head to fit into the pipe. Once the cut is made, the Valve is closed the hot tap machine is removed from the line, and a line stop actuator is bolted into place.

New gaskets are always to be used for every setup, but "used" studs and nuts are often used, because this operation is a temporary operation, the Valve, machine, and actuator are removed at the end of the job. New studs, nuts, and gaskets should be used on the final completion, when a blind flange is installed outside of the completion plug.

The line stop actuator is operated, to push the plugging head (line stop head), down, into the pipe, the common pivot head, will pivot in the direction of the flow, and form a stop, thus stopping the flow in the pipe.

Completion Plug

In order to remove the Valve used for line stop operations, a completion plug is set into the line stop fitting flange (Completion Flange).

There are several different types of completion flange/plug sets, but they all operate in basically the same manner, the completion plug and flange are manufactured, so as to allow the flange, to accept and lock into place, a completion plug.

This completion plug is set below the Valve, once set, pressure above the plug can be bled off, and the Valve can then be removed.

Once the plug has been properly positioned, it is locked into place with the lock ring segments, this prevents plug movement, with the o-ring becoming the primary seal.

Wednesday, May 16, 2012

Safety Radiation:What you need to know about Cell Phone Radiation and Health Risks

In the year 2000, a Maryland doctor, Chris Newman, filed an $800 million lawsuit against Motorola and Verizon. He claims using his cellular phone caused his brain cancer. That striking story, and other recent events, suggest that the rules are changing in the cellular world. Will public pressure force cell phone makers to do something about their phone's radiation?

Ironically, the cell phone radiations issue has started exactly the same way: According to Newsweek, in 1993, a man alleged that his wife had died of brain cancer from cell-phone use. He then sued the manufacturer but the case was dismissed.

But since then, many other newsstories have been published on cell phone risks and manufacturers are probably starting to sense the public's worries, since we now see initiatives coming from the industry. At the beginning of July, shortly after the World Health Organization (WHO) called for more cell phone studies, the Cellular Telecommunications Industry Association (CTIA) announced that phone makers would be starting to include radiation level information on their products, thus potentially allowing us to select a phone depending on its radiation level.

It's an important step, compared to their traditional attitude, which has always been to say: "There is no proof that cell phones involve a health risk." No proof... yes, but does that mean there are no risks? Certainly not! There might be risks but we can't prove it yet, and that's all their "reassuring" statements say.

What we really need is more studies... and stronger studies. There have been some but their scientific method is criticized. The stronger the upcoming studies, the more useful they will be. It's a very open field for researchers cause there are many things we need to know: do the phones harm us?; What about the base stations?; Are protective devices efficient?; Is this less damageable to wear your phone at your belt and use a headset?

In my opinion, we will soon see tens of initiatives burgeoning among the industry itself. As concerns about health risks raise and news stories continue to pile up, phone makers and network operators will have to do something else than just say "There is no proof" if they want to meet their exponential growth forecasts... It is said that worldwide cell phone users will skyrocket from 450 million in 1999 to 1.2 billion by 2003!

Such a market should motivate them to find workable solutions quickly if they don't want their potential customers to change their mind... before they boil it.

Go on to "The Headset Controversy" and find out why some now believe using a headsets is not a solution and can even be more dangerous!

Tuesday, May 15, 2012

Safety Smoke:Secondhand Smoke: The Basics of Secondhand Smoke and Its Effect on Human Health

What is secondhand smoke?

Secondhand smoke is a byproduct of cigarette, cigar or pipe smoking. Secondhand smoke occurs when tobacco burns or when smokers exhale, and it is inhaled involuntarily by non-smokers.

Secondhand smoke is composed of two types of smoke. The first is called sidestream smoke, which is the smoke released from the burning end of a cigarette or cigar, or from tobacco burning in the bowl of a pipe. The second is called mainstream smoke, which is exhaled by a smoker.

Why is secondhand smoke dangerous?

When nonsmokers are exposed to secondhand smoke, they inhale many of the same cancer-causing chemicals that smokers inhale. According to the U.S. Surgeon General, cigarette smoke contains more than 4,000 chemical compounds, including more than 50 cancer-causing chemicals, and at least 250 chemicals that are either toxic or carcinogenic.

Both sidestream and mainstream smoke are dangerous to nonsmokers. For example, because sidestream smoke is generated at lower temperatures and under different conditions than mainstream smoke, it contains higher concentrations of many of the toxins found in cigarette smoke.

Secondhand smoke has been designated as a known human carcinogen by the U.S. Environmental Protection Agency, the National Toxicology Program, and the International Agency for Research on Cancer. Secondhand smoke also is listed as an occupational carcinogen by the National Institute for Occupational Safety and Health.

How can nonsmokers be protected from secondhand smoke?

According to the 2006 report by the U.S. Surgeon General, there is no risk-free level of exposure to secondhand smoke: even small amounts of secondhand smoke exposure can be harmful to people’s health.

A smoke-free environment is the only way to fully protect nonsmokers from the dangers of secondhand smoke. Separating smokers from nonsmokers, cleaning the air, and ventilating buildings can help, but they cannot eliminate the exposure of nonsmokers to secondhand smoke.

Safety Glasses : Healthy Glasses / Safety Information


On the face of Pinhole Glasses or goggles therapy Aerobic Glasses look like ordinary sunglasses. But when viewed from close range carefully, you will find a few rows of a pinhole-sized holes, located at specific positions are not uniformly impressed magnifications.

For those of you who have good eyesight disorders myopi / nearsightedness (minus) farsighted (plus) or a cylinder, you will be able to prove themselves the truth of the working principle of these glasses when viewing or reading the paper that you can not see clearly with the naked eye by wearing these glasses you will be able to see clearly even without glasses lens. This proves that by wearing these glasses will make your eye muscles to focus, so that the shadow of the object falls right in the yellow spot of the retina and therefore you can see clearly.

Therapy should be run to address abnormalities in your eyes is to wear these glasses when watching TV or reading continuously for 30-60 minutes every day, so hopefully will naturally strengthen your eye muscles are already weakened.

Working Principle : Pin Hole Glasses :

To understand how the pin-hole glasses to work, you need to know the reasons why your eyesight becomes weaker

There are two types of muscle that circles the eye of the retina of your eye. One we call a muscle cylinder, serves to suppress the retina and make thicker. Another one is called a radical and muscle functions to pull the retina in order to be thin.

On the front there is a retinal eye. Image transferred to the receiver located at the back through the retina.

When you see a nearby object, the cylinder will push the muscle and muscle will radically expand, making a thicker retina and bring the retina closer to the receiver, then the object will be focused on the receiver.

When you see a distant object, the muscles will radically expand, making the retina is thinner and away from the receiver. With thhs object will be in focus to the top of the receiver.

Weak visibility is usually caused by an incorrect reading, poor diet, stress, pollution or contamination of natural and disease-related eye diseases. There is some pressure that causes the eye muscles are not normal pressure, resulting objects can not be properly focused onto the receiver. This then causes the vision to be weak, such as nearsightedness, farsightedness and cylinders.

Pressure above the eye muscles will also inhibit blood flow and causes the muscles of the eyes and the eyes of the other components do not get the nutrients that should be taken. Therefore, rest your eyes when fatigue is very important.

Pin Hole glasses will rest your eyes by diverting pressures experienced every day. At the same time, a hole or cavity glasses make your eyes focus without aggravating your eye muscles work. These glasses reduce the emission of light entering the eye and increase the focus on you, thus making the object focused according denagn appropriate magnifications.

Who Needs : Pin Hole Glasses?

Pinhole Glasses are made specifically for those who wear glasses or contact lenses for nearsightedness, farsightedness, and cylinders. Can improve weak eyesight for all groups including elementary, junior high school and adults. Even though parents. Basically, since you use glasses, your glasses into a kind of stick in your eye. Your result is too dependent on your glasses, your eyesight weakened. Then drawback of glasses are glasses need to be replaced if your eyes are getting weaker because of the minus, plus or cylinder increases. By using a pin-hole glasses, make your vision will gradually recover.

These glasses can not work miracles in a day use only. You are wearing eye glasses have become weaker over the years due to dependence on crutches (glasses). Your eyesight is a good start at the beginning of therapy you wear glasses this is a temporary result. Learn the habit of focusing your eyes with goggles daily use of the therapy through the eyes a rest and exercises focus on the eyes.

Booking procedure / order for pin hole spectacles therapy, regardless of the number of both retail and wholesale, it is very easy. You can contact Customer Service is very friendly over the phone or SMS only.
  1. You can contact our customer service and order glasses confirm how much therapy you want.
  2. And confirm the name and address of who you are where the glasses will be delivered therapy.
  3. You can make payment by the amount and price confirmed Customer Service by way of transfer
  4. After payment, please confirm again by the Bank where you have to make payments. (nb: this is the most important point, because we will check)
  5. Customer Service will confirm the delivery receipt number
 Price : $25 / PCS

Contact Person :
Email : qhsecapricorn@hotmail.com
Blog  : www.seosafety.blogspot.com
Phone : +6231-9128-4666



Sunday, May 13, 2012

Safety Google : Chainsaw


This article is about risk control methods specific to chainsaws and chainsaw operations. Chainsaws incorporate numerous safety features common to many engine-driven power tools. Manufacturers have invented numerous design features to improve safety. Some features have become de facto standards, and others are legal requirements in particular jurisdictions. Best practice dictates that an operator should inspect the saw before starting work and only operate the saw if all the safety features are properly functional.

Additional safety features are a significant commercial advantage to chainsaw producers. Companies continue to develop new features over time. Most chainsaw safety features are focused on the kickback problem, and seek to either avoid it (chain and bar design), or to reduce the risk of injury should it occur (chain brakes). In addition to the safety features built into the chainsaw, operators should also wear specific chainsaw safety clothing. Most older saws have few or none of these features, and extra care should be taken in their use.

Chain

The chain has to be properly matched to the guide bar and the saw. Chainsaw manufacturers specify a selection of suitable chains for each model of saw.

Best safety requires that the chain is properly sharpened. One key sharpening parameter is the depth gauge setting. The depth gauge is the small steel protuberance in front of each cutting tooth. The difference in height between the leading cutting edge and the depth gauge determines the thickness of the wood chip taken by the cutter. If the depth gauge is too low, the cutter takes too deep a bite from the wood, the saw becomes difficult to control and the chances of kickback increase.

Some chains also have guard links in front of each cutter link. The guard link reduces the tendency of the leading edge of the depth gauge to snag on small-diameter objects such as small branches, or to engage with ordinary timber if forced into contact with it.

Chainsaw bars

Kickback reduction

Chainsaw Kickback is primarily caused by cutting with the chain in the "kickback zone" on the bar, the upper quarter of the nose.[1] Some saws, usually electric saws intended for domestic garden use, shield this whole area from contact with a "tip protector". All cutting produces a reaction force on the saw: normally this should be the lower edge of the bar, where the chain is travelling towards the saw and the reaction tends to pull the saw safely towards the log, against the spur dogs. Where the chain is moving downwards, as at the tip of the bar, the same reaction force now acts upwards and will cause a kickback upwards.

Tip protectors are metal or plastic devices that fit over the bar tip and are usually fitted to small, domestic-class saws. While these are effective, they hamper the saw in terms of the type and capacity of cuts it can execute, and are not widely used. They find a useful application in pole pruners and one-handed battery-powered saws that are used for trimming, hedge laying etc. The hooked nose of the tip protector can be used to "grab" branches for cutting, and presents no great drawback since these very small saw units are not used for cuts where the bar tip is buried.

Carving bars

Chainsaw carving often makes deliberate use of plunge cuts, and cuts on the tip of the bar. By simply reducing the diameter of the chain nose, the amount of chain, and thus the force generated during a kickback, may be reduced. Specialist carving bars are available with small pointed noses.

Chain brake

Front handguard, and combined chain brake lever

Chain brakes prevent movement of the saw's cutting chain by applying a steel brake band around the driven clutch drum.[2] Clamping force for the brake band is provided by a powerful spring. The chain brake has two purposes. First, it can be used to secure the chain when changing position, moving between cuts or starting a cold saw, which requires a partly open throttle. This would otherwise lead to uncontrolled chain movement, a major hazard in older saws. Secondly, the chainbrake can activate under kickback conditions to prevent the operator from being struck by a running chain. Of course being struck by even a static chain may cause serious injury, but anything that can be done to mitigate the usually dreadful injuries caused by contact with a moving chain is of obvious benefit to operators. Kickback injuries usually occur to the head, face, neck and shoulders; when a running chain is involved, such injuries are usually very serious, often disfiguring and sometimes fatal.

The chain brake is principally operated by the top-hand guard being pushed forward to engage the brake, and pulled back to disengage. The spring-loaded action allows powerful braking under emergency conditions and can halt a chain under full power in a fraction of a second. Correspondingly, it may require considerable force to reset.

The chain brake may be activated deliberately by the operator, or automatically by the force of a kickback event. In the former, the operator usually rotates his left wrist and knocks the top hand guard forward with the back of his hand, re-setting it by reaching forward with his fingers to pull the top hand guard backwards. In the case of a kickback event the operator's left hand may be violently dislodged from the handle and the top hand guard will be thrown onto his hand, forcing activation of the chainbrake. Husqvarna models also incorporate a link between the top handle and the chain brake trigger, applying the brake if the saw's bar is forced suddenly upwards. This is known as an "inertia" chainbrake and will allow activation of the chainbrake even if the operator's left hand is not removed from the handle.

The chain brake may also be of use when sharpening a chain on a bar, as it allows robust filing to take place without the chain slipping about.

"Wrap-around" top-hand guards have made an appearance in recent years, but are unpopular.[who?] They restrict movement, and make no allowance for the fact that when the handle is gripped on the lower section of the handle (left side of the saw from the operator's viewpoint) it is usually for making lateral, right-to-left cuts. In this situation the operator's head, neck and shoulders are out of the cutting plane of the saw and will not be struck even if a kickback does occur.

Chainsaw kickback

Chainsaw kickback can occur when the tip of the bar comes into contact with a relatively massive or immovable object with the chain under power. The area of the bar tip most likely to be involved is known as the "kickback quarter". looking from the side of the bar, the kickback quarter is the 90° section of bar found between a line going along the centreline of the bar, and another line at 90° to the first, rising upwards from the centre of the nose sprocket. If this area of chain comes into contact with - for instance - a log, the chain will initially cut the wood, but will also produce a reaction force which pushes the bar upwards. As the bar rises, the chain is forced harder into contact with the wood and climbs upwards even harder. In a fraction of a second the chain may jam hard into the wood and hurl the bar upwards towards the operator, often causing very severe injury or death. The violence of a full kickback event is such that no evasive action is possible, and if the operator's head, neck or shoulders are in line with the plane of the bar, he will certainly be struck by it. At this point, he must rely on his chainbrake and PPE to save him from injury or worse.

Another form of kickback may occur where the top of the bar is used for cutting and becomes suddenly pinched by the wood moving. In this case the saw may be forced backwards towards the operator, or forced into a position where the tip is pinched and the saw transitions into a classic tip-driven kickback. Kickback may also occur as a result of a failed or improperly executed boring cut. Bore cutting is a specialised technique requiring proper training, and should not be attempted without such training.

Kickback reducing systems

By far the most effective tool in preventing kickback is operator training. By preventing contact between the bar tip and solid objcts, kickback may be avoided. By keeping their head and body out of the cutting plane of the bar, injury may be prevented if kickback occurs. A useful tip is that if the operator can't read the logo on the side of the bar, they are too close to the cutting plane and should lean left to ensure safety.

Correct chain sharpening is paramount to safety in this context. Blunt chain cuts poorly and leads to increased operator fatigue and increased bar loading. Depth gauges filed too low make the chain grab at the wood and may negate the benefits offered by safety chain.

Chain design plays a major part in kickback reduction. Older, non-safety designs carried only teeth and depth gauges. Since these present a solid leading edge at the depth gauge should an object be suddenly forced into the chain, they can easily be made to engage fully with the foreign body and launch into a full kickback. Careful filing of the depth gauges, making a radius down to the leading edge, reduces the risk somewhat. Newer chains with ramped drive links fill in the gap ahead of the depth gauge, reducing the tendency to grab still further. Full safety chains have extra bumper links between the cutting links, maintaining nearly full depth gauge height along the full extent of the chain and reducing the risk of kickback to very low levels. Full safety (bumpered) chains are often fitted as original equipment to domestic and entry level saws. Modern "professional" chains offer far higher cutting performance than full safety chain, and offset their increased risk with an assumption of a much higher degree of operator competence. In reality they are still safer than traditional chains due to the vastly improved depth gauge design, with a deep ramp ahead of the gauge point.

Bar design is another factor in reducing kickback risk. The larger the radius of the bar tip, the greater the risk of kickback as the degree of engagement with the log (or other body) will be greater for a larger tip. Domestic class bars, climbing saw bars and entry-level professional bars usually have very small tips. Professional bars designed for logging and felling may have much larger tips as they are often used for boring cuts to free trapped timber or fell difficult trees, and a tapered, small-tipped bar will wedge easily when boring, stalling the chain. A large-tipped bar with nearly parallel sides bores easily and does not tend to jam.

While kickback prevention is a great concern in the context of chainsaw use, it is not the only means by which an operator can be injured by a saw. Local conditions, operator competence and many other factors need to be considered before undertaking sawing operations.

Safety throttle

The engine throttle is operated by the trigger under the rear handle of the saw. Unless the lock-out switch above the rear handle is also pressed, the throttle cannot move from the idle position, and the chain will not be driven.

The safety throttle prevents the chain from being driven if the trigger is accidentally pushed by an obstruction, such as a branch in undergrowth. It also prevents throttle activation when hot-starting a saw on the ground with one boot inside the rear handle. The safety throttle is an additional layer of protection in this case, since the chainbrake should be applied before starting a saw in any context.

The pictured model has an enlarged lock-out or 'dead man' switch which, when released, also activates the chain brake, thus instantly halting the running chain as well as disengaging the throttle.

On/Off switch

The on/off switch stops the engine running by preventing the ignition coil from firing. It must be clearly marked with the stop position. There must be a positive click action, so that there is no chance that the switch will change position accidentally, even while the saw is vibrating under heavy load.

If the switch were to move to the off position while the operator was in the middle of a critical cut while felling a tree, there would at least be a delay, which increases the chance that the tree might fall in an uncontrolled manner. Also, the saw might jam in the cut, requiring that the operator spend extra time under the unsafe tree freeing it. A switch failing "on" would also present a hazard, since the saw may then start inappropriately, such as when testing compression or assessing starter function.

If the operator is injured while using the saw, a bystander might have to move in to turn the saw off. The bystander may be unfamiliar with the saw and needs to be able to identify the on/off switch by its markings.

The Stihl model shown combines the choke, throttle start setting and ignition switch into one unified control lever. Other brands of saw usually have separate controls for all three, or a combined throttle start setting and choke control with a separate ignition switch.

If the switch fails to operate, a saw may be reliably stopped by operating the choke control to flood the engine.

Centrifugal clutch

The centrifugal clutch disengages the chain from the engine when the engine is only at idling speed, engaging the drive automatically when the throttle is squeezed and the engine is at full speed. The purpose of this clutch is to avoid having a moving chain when the saw is idling and temporarily not cutting. At idle the chain should not move.

Many rear-handled chainsaws are used in a state, owing to poor maintenance, where there is some clutch drag and so the chain does move slowly at idle. For top-handled saws though, this is extremely dangerous and the clutch (and chain brake) on such a saw must always be functioning correctly.

Some early chainsaws used a manual clutch instead, but this is long obsolete. Anti-vibration system rubber bush metal spring

Excessive vibration over long periods can cause the user to develop hand-arm vibration syndrome (HAVS), or white finger. This is a potentially permanent and debilitating industrial injury. To reduce vibration, saws are divided into two parts. One part is a rigid assembly of the cutter bar and engine. This part vibrates strongly when the chain is cutting. The other part is a rigid assembly of the handles and controls of the machine, the part the user holds. These two rigid assemblies are joined together by mounts which provide spring suspension and damping.

Both metal springs and rubber bushes can be used to provide suspension. Metal springs are more robust and longer wearing, but rubber bushes provide damping in addition to a spring action.

Many modern saws incorporate electrically heated handles. This can help prevent HAVS by encouraging circulation to the fingers. Husqvarna models with this option have a "G" suffix after the model number.

Rear handle

Rear-handled chainsaw and two-handed grip

The front and rear handles of a typical "rear handle" chainsaw are widely spaced,so as to provide enough leverage for good control,[6] and also to provide some degree of control in the event of a kickback.

The operating controls of the chainsaw, such as the throttle and the engine stop (or on/off) switch, are placed so that they may operated whilst retaining a good grip on the rear handle.

It is impossible to use a rear-handled chainsaw single-handed. Their balance is such that this is not merely unwise, but so impractical as to be beyond a reasonable chance of it even being attempted.

Top-handled chainsaws

Top-handled chainsaws are a form of chainsaw whose safety is deliberately compromised in order to permit them being used single-handed where this is essential. They are restricted to working at height, such as up a tree.In all other cases, it should be possible to arrange the cutting task so that it can instead be carried out with two hands and the safer rear-handled chainsaw.

In the top-handled saw, the rear handle and its operating controls are moved to the top of the saw.This gives a balance to the saw such that it can now be used one-handed. The front handle remains the same. The chain brake lever is usually separate, rather than being combined into the protective hand guard.

In most cases, the top-handled chainsaw is used two-handed.It is only used single-handed when this is essential, such as when one hand is required for climbing.At ground-level, top-handled saws should not be used.

Owing to the nature of work at height, and the difficulty of continually re-starting the saw, the engine will often still be running when it is not used for cutting at that moment. For this reason it is particularly important that the centrifugal clutch is operating correctly so that the chain doesn't rotate when the engine is idling.The chain brake should also be engaged manually when not actually required,which is why top-handled saws usually have an easy brake control lever.

In many jurisdictions, use and even purchase of top-handled chainsaws is restricted to those holding the relevant certificate of competence in their use.

Rear hand guard

The rear hand guard protects the users right hand from being struck by a snapped or derailed chain.It also allows the rear of the saw to be held down by the operator's boot for starting. This is especially useful for cold engines, and larger (70 cc+) saws.

Exhaust

The exhaust directs the hot and noxious gases coming from the engine away from the user. A faulty exhaust increases noise, decreases engine power, can expose the user to unsafe levels of exhaust gases, and can increase the chance that the user could accidentally touch extremely hot metal. Most models feature a spark screen which is integrated into the muffler. The spark screen prevents sparks from being discharged from with the exhaust and potentially igniting sawdust. The spark screen also reduces noise.

Hand/Eye/Ear Defender Symbols

Warning labels

In the EU at least, it is a legal requirement that chainsaws carry certain standardized warning labels which warn of the dangers of kickback as well as making clear the need for protective clothing.

Scabbard

The cutter chain is sharp enough to cause injury even when it is not being driven. The scabbard covers the chain when the saw is in storage or being transported. It also protects the chain from damage, for instance blunting by contact with concrete floors.