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Layering FR/AR Garments for Protection Against Arc Flash

Arc flash is a dangerous reality for those who work in the electrical industries. Since arc flash incidents cannot be predicted, it’s important that workers wear personal protective equipment (PPE) at all times. This whitepaper discusses how a layered system can protect workers while providing comfort and safety.

Fill out the form below to download the whitepaper.

FR CLOTHING BUILT TO WORK HARD
As a worker in the electric utility industry, you need to make sure you’re wearing the right FR garments that will protect you in the event of an arc flash. Bulwark Protection provides a wide variety of FR clothing that meets industry standards.
How to manage cold stress on the job.

Cold stress may not be as well-known as heat stress, but when the temperature drops, it can pose a significant danger. Employers have many options for helping workers manage their exposure to cold while protecting them from flash fire and arc flash. This whitepaper discusses how you can layer FR/AR garments, how to implement a PPE program and the warnings signs of cold stress.

Fill out the form below to download the whitepaper.

Ask An Expert
What is a Hazard Risk Assessment?

AR, FR, ATPV, OSHA. The list goes on and on. If there’s one thing that’s true about FR safety, it’s that there are a lot of terms to memorize. It’s not always easy to keep the various words and acronyms straight, but when it comes to building and implementing an effective safety program, knowing your FR vocabulary is important. Here, our FR experts have compiled the most important of those terms in a handy alphabetized glossary so you can create a culture of compliance.

Arc Flash
An arc flash is a type of electrical explosion where temperatures can reach or exceed 35,000 °F. The Arc Flash hazard affects all who work in and around energized electrical equipment. This can include general industry electricians, maintenance workers and operators, as well as our electric utilities, including transmission, distribution, generation and metering.

Arc-Rated (AR) Protective Clothing
Arc-rated protective clothing protects from arc flash and electric arc hazards. AR garments are measured in cal/cm². The total AR clothing system must meet or exceed required arc protection levels. Remember, all AR is FR, but not all FR is AR.

Breakopen
Breakopen is the formation of holes in the fabric during arc rating testing. This is the point of failure of FR protective garments.

EBT
Energy Break-Open Threshold is an alternative measure to ATPV when that measure cannot be used due to breakopen.

Flash Fire
A rapid moving flame front that can be caused by a diffuse fuel, such as dust, gas, or the vapors of an ignitable liquid, without the production of damaging pressure. Flash fire is the primary hazard in the Oil & Gas industry, which includes exploration, drilling, field services and refining.

Hazard Risk Assessment
The first step in the creation of any PPE program is the Hazard Assessment. Federal regulations require employers to assess the workplace to determine if hazards that require the use of personal protective equipment are present or are likely to be present. These include impacts, combustible dust, fire/heat, and chemical hazards, among others.

HRC (Hazard Risk Category)
Hazard risk categories are defined by NFPA® 70E and assigned based on risk associated with electrical safety and arc flash. HRC levels determine the appropriate ATPV of flame-resistant clothing for a given task.

PPE Category
Replaces HRC in 2015 edition of NFPA 70E, the “0” category was eliminated in NFPA 70E 2015. The minimum ATPV’s for PPE Category 1 through 4 are the same as they were for HRC, and the new PPE table only specifies PPE for work within the arc flash boundary.

CAT 2
HRC 2 rated garments have an arc rating between 8 cal/cm² and 25 cal/cm² and are often referred to as “daily wear.”

CAT 3
HRC 3 rated garments have an arc rating between 25 cal/cm² and 40 cal/cm².

CAT 4
HRC 4 rated garments have an arc rating equal or greater than 40 cal/cm². These high ratings are achieved with a layered FR system. Download our FR Layering Fact Sheet to learn the do’s and don’ts of layering for FR.

Inherently Flame Resistant
Inherently flame resistant fabrics are engineered to be flame-resistant at the fiber level, and do not require any additional finishing.

NFPA®
The National Fire Protection Association is an agency whose task it is to promote and improve fire protection and prevention. They publish National Fire Codes.

NFPA® 2112
Refers to NFPA’s “Standard on Flame Resistant Garments for Protection of Industrial Personnel Against Flash Fire.” NFPA® 2112 is the “go-to” industry consensus standard that addresses flash fire. It defines the testing methods and performance requirements for flame-resistant fabrics for this hazard.

NFPA® 70E
The “Standard for Electrical Safety in the Workplace,” NFPA® 70E is meant to protect those working around potential arc flash hazards. Note that NFPA® 70E applies only to general industry electrical safety, not to electric utility workers.

OSHA

Founded by the Occupational Safety & Health Act of 1970, The Occupational Safety and Health Administration’s (OSHA) mission is to “assure safe and healthful working conditions for working men and women by setting and enforcing standards and by providing training, outreach, education and assistance.” Their general duty clause ensures a safe workplace for all employees and is the basis for all industry consensus standards. OSHA determines regulations and standards related to personal protective equipment.

OSHA 1910.269

The regulation states that power utilities make reasonable estimates of the incident heat energy to which their employee would be exposed, and that employees exposed to hazards from electric arcs wear AR clothing and other protective equipment with an arc rating greater than or equal to the estimated heat energy.

ANSI

Founded in 1918, The American National Standards Institute coordinates and develops voluntary standards for products, services, and systems. The organization’s goals include performance consistency and product safety. It is the U.S. member body to ISO and IEC.

PPE (Personal Protective Equipment)

Personal protective equipment is specialized safety gear worn by an employee for protection against a hazard. Flame resistant/arc rated garments are a form of personal protective clothing worn against thermal hazards.

Moisture Wicking

Moisture wicking fabrics pull moisture (sweat) away from the body and dry quickly, keeping the wearer cooler, dryer, and more comfortable. Bulwark iQ Series® FR Comfort Knits and Wovens are among the best moisture wicking FR garments available.

Breathability

Breathability refers to how well a fabric allows air to be transmitted through the material. The more air that passes through, the cooler the wearer stays. Bulwark iQ Series® Endurance Collection is the first of its kind to offer high level FR protection in a material that is extremely breathable and durable.

Safety Updates
The ABC’s of PPE

Building a PPE program that meets all safety requirements and meets your personal needs is no easy task. You must select the right garments based on the unique hazards of your industry, in addition to important factors like comfort, durability and laundering. But even the best PPE program in the world is ineffective without the proper implementation and training. Below, we’ll provide you with a step-by-step process for designing, implementing and maintaining your PPE program.

Hazard Assessment
The first step in the creation of any PPE program is the Hazard Assessment. Federal regulations require employers to assess the workplace to determine if hazards that require the use of personal protective equipment are present or are likely to be present. Using the Hazard Assessment Checklist, you will conduct a walk-through survey of the workplace to identify potential hazards. These include impacts, combustible dust, fire/heat, and chemical hazards, among others. When conducting your assessment, be sure to consider workplace, procedural, and environmental hazards.

Selecting the Right PPE
Once you’ve established the need for PPE, it’s time to determine the degree of protection required based on your particular hazards. We do this by matching the hazard to the regulations, which inform what, if any, PPE is required. Industry consensus standards may be used to guide selection decisions, and the best way to cite these standards is by industry. For the main industries Bulwark serves, the hazards and standards are as follows:

Oil & Gas, which includes exploration, drilling, field services, refinement, and chemical, faces the known hazard of flash fire, a rapidly moving flame front that expands through diffuse fuel without creating blast pressure.

NFPA® 2112 and NFPA® 2113 are the “go-to” industry consensus standards that address flash fire. NFPA® 2113 focuses on how organizations and employers—as well as individual wearers—should choose the correct garment based on certain criteria.

Electric Utility workers, including those working in the transmission, distribution, generation, and metering of power utilities, are exposed to hazards associated with electrical energy, primarily electrical arcs or arc flashes.

General Industry: Wherever workers may be exposed to hazards associated with electrical energy, employers must make sure they are protected. This includes electricians, maintenance workers, and operators.

NFPA 70E® requires AR (or arc-rated) clothing for any potential exposure above 1.2 cal/cm2, which equals the onset of a second-degree burn. The level of protection must be based on the task at hand, and most general industry tasks will require CAT2 or higher. It’s necessary to carefully consider the actual risk associated with a job and to match the protection category accordingly.
NOTE: NFPA 70E® applies only to general industry electrical safety. To address specific circumstances for utility, OSHA published 1910.269 & 1926.960, which state that power utilities are required to wear arc-rated clothing which matches the potential threat as determined by a proper hazard analysis.

Training
Employers implementing a PPE program are required by OSHA 1910.132(f)(1) and all industry consensus standards to provide training to each employee. According to OSHA, each employee who is required to wear PPE should at least know when it is necessary, what exactly is necessary, the do’s and don’ts of proper wear, what its limitations are, and how to properly care for it.

NFPA® 2112 A.5.1.1 offers specific requirements about the information employers must provide to their employees.

Maintenance
Proper care and maintenance of FR/AR clothing is essential to the effectiveness of your PPE program. While most industry standards recommend following the instructions provided by compliant garment manufacturers, some standards offer specific guidance, and there are a few basic rules that apply across all relevant standards.

1. Do not use any kind of bleach or peroxide

2. Do not use any additive that could build up and impede FR performance

3. Wash FR/AR garments separately

4. Turn FR/AR garments inside out to help color retention and preserve appearance

5. Use liquid detergent for best results

6. Avoid the hottest temperature to reduce the impact of shrinkage

7. For tough stains, apply liquid detergent or stain remover and soak garment

8. For even tougher stains, Bulwark® FR garments can be dry cleaned

9. Tumble dry on low setting and do not over dry

10. Rewash garments with lingering odor

11. Never use DEET or any other flammable substances on FR/AR clothing.

12. Any repairs must be made with fabric and findings that match the protection level of the original garment.

 

More specific regulations about PPE maintenance are defined in NFPA® 2113 and NFPA 70E®.

Safety Updates
Managing Cold Stress

Workers in the oil and gas and electric utility industries frequently face flash fire, arc flash and heat stress hazards. But one hazard that may not be as talked about is cold stress. Cold stress occurs when skin temperature drops, lowering internal body temperatures and disabling the body’s ability to warm itself. It can lead to several medical conditions, including trench foot, chilblains, frostbite and hypothermia.

 

Warning signs of cold stress:

• Shivering
• Teeth chattering
• Numbness
• Stiffness 
• Cold, stinging, aching
• Loss of coordination
• Dilated pupils
• Slurred speech
• Disorientation and confusion
• Unusual fatigue

According to OSHA General Duty Clause, the responsibility for worker safety is squarely on the employer. According to Section 5(a)(1):

Each employer (1) shall furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or likely to cause death or serious physical harm to his employees; (2) shall comply with occupational safety and health standards promulgated under this Act.

 

Tips on how you can reduce cold stress for you and your team:

• Train workers on the appropriate personal protective equipment (PPE) and work practices to reduce cold stress risk
• Implement safe work practices
• Help workers who are used to working in warm areas build up a tolerance for working in the cold environment
• Schedule maintenance and repair jobs for warmer months
• Schedule cold-weather jobs for the warmer parts of the day
• Reduce the physical demands of workers
• Use relief workers or assign extra workers for long, demanding jobs
• Provide workers with warm liquids
• Provide workers with warm areas during peak cold periods
• Include a thermometer and chemical hot packs in first aid kits
• Train workers to avoid touching cold metal surfaces with bare skin
• Monitor workers’ physical condition and have them monitor their coworkers

Another great method to keep workers safe from potential cold stress is to utilize a layering system. A layering system allows workers the flexibility to remain more comfortable and safer in a variety of conditions. As long as the layers are compliant to the assessed hazard and are layered correctly according to industry regulations. Try Bulwark Protection’s Arc Rating Calculator to see how your layers add up. 

 

Here are a few critical considerations when layering FR/AR garments:

• Always layer FR/AR garments underneath FR/AR outerwear
• The arc rating of the outermost FR/AR layer must be sufficient to prevent break open and ignition of any flammable base layer
• Non-FR/AR outerwear should never be worn over FR/AR garments

Cold stress shouldn’t be a risk you and your team overlook. That’s why it’s not only important to incorporate a comprehensive layered PPE program, but to be aware of the warning signs of cold stress and how you can reduce the risk.

Ask An Expert
Is DEET Flammable?

With every new bug season, come swarms of new questions as to how to properly use insect repellent while wearing FR garments. Here are Bulwark’s “do and don’t” details. Make that, DEETails.

DEET is the active ingredient in many well known, and often used, insect repellents (liquids, lotions, sprays, wristbands, etc.) It is used to ward off biting pests such as mosquitoes and ticks – insects that may or may not be carrying far peskier diseases like West Nile Virus and Lyme Disease.

The problem for those who work outdoors in oil & gas and electric utility? DEET is HIGHLY flammable. Especially in concentrated form. Any flame resistant clothing sprayed with it has the potential to ignite and continue to burn if exposed to an ignition hazard. Your guys don’t need that kind of fuel source.

Bulwark’s best advice: DEET should be sprayed directly on the skin, and never on your FR. So stay, and spray, safe as warm weather is here.

Ask An Expert
Know Your Hazards

Depending on the line of work you’re in, there are any number of dangers you may encounter on the job. From slip-and-fall hazards to those due to working at height, there’s PPE to help keep you protected. When it comes to thermal hazards, your FR clothing protects you against two main hazards: Flash Fire and Arc Flash.

Flash Fire
A flash fire is a rapid moving flame front that can be caused by a diffuse fuel, such as dust, gas, or the vapors of an ignitable liquid, without the production of damaging pressure. In the Oil & Gas industry, which includes exploration, drilling, field services and refining, flash fires are the primary hazard FR protects against.

NFPA® 2112 and NFPA® 2113 are the “go-to” industry consensus standards that address flash fire. Once safety managers have identified they have a flash fire hazard, FR is necessary. Selecting the appropriate FR garments for your safety program should be based on a number of factors such as protection, comfort and durability.

Arc Flash
An arc flash is a powerful and dangerous occurrence where an electric current leaves its anticipated path and travels from phase to phase, or phase to ground. The resulting explosion produces extremely high temperatures, acoustic energy and concussive force. When a person is in close proximity to the arc flash, serious burn injury and even death can occur.

The Arc Flash hazard affects all who work in and around energized electrical equipment. This can include general industry electricians, maintenance workers and operators, as well as our electric utilities, including transmission, distribution, generation and metering. As employers, it is your responsibility to ensure that all employees exposed to the hazard are protected with arc-rated flame-resistant clothing.

No matter which hazard your FR clothing is designed to address, the success of any program is dependent upon the proper selection, use, care and maintenance of your FR program. For more information on how to select the right FR for your needs and tips on implementing a FR clothing program, get in touch with a Bulwark FR expert.

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What is ATPV, and how is it used in your hazard assessment?

What is ATPV, and how is it used in your hazard assessment?

Put simply, ATPV—Arc Thermal Performance Value—is the most commonly reported test result of the effectiveness of FR clothing. It measures the amount of incident energy that your FR garment can protect you from before the onset of a 2nd degree burn. And the FR garments in your safety program must meet or exceed the Incident Energy required based on your hazard assessment. But it’s a bit more complicated than that.

To better understand ATPV, let’s start with an overview of two main concepts: The Stoll Curve and Arc Ratings.

The Stoll Curve
The Stoll Curve is the predictive model used to measure the probability of burn injury. It quantifies the heat levels and exposure times that result in a second-degree burn, including high temperature exposure for a short time and low temperature exposure for a much longer duration.

Arc Rating
An arc rating is the protection level afforded by an FR fabric when exposed to an electric arc. The arc rating of a fabric is determined by exposing the fabric to a staged electrical arc. In real life, arc behavior can be unpredictable, so the testing requires samples be exposed to a “controlled” arc utilizing the ASTM 1959 standard.

ATPV
That brings us to ATPV (Arc Thermal Performance Value), which is a type of arc rating. The ATPV of an FR garment indicates that you have a 50% chance of the onset of a 2nd degree burn if exposed to an electric arc with the same calories of incident energy. The fabric will usually not break open unless exposed to incident energy levels higher than the arc rating.

So why is ATPV important? Think about it this way:

Let’s go back to what ATPV measures:

The amount of incident energy that your FR garment can protect you from before the onset of a 2nd degree burn.

Why is that important?

• By definition, second-degree burns cause a blistering, blisters can break the skin (that’s why the test is designed around 2nd degree burns).

•One of the pathways to infection is broken skin.

• One of the causes of death in burn victims is infection.

When you think about it that way, matching the ATPV of the FR garments in your safety program to the value required by your hazard assessment is not just a matter of meeting the standards. For your guys, it can be the only thing that stands between them and a potentially life-threatening burn hazard.

To learn more about ATPV and Arc Ratings, download our whitepaper: Understanding Arc Ratings

Industry News
Top 10 Things to Consider Before You Buy FR

It’s likely you know a thing or two about FR. You know that FR clothing protects your guys against severe burn injuries and even death as a result of thermal incidents on the job. You know it’s also required by law in many different industries, under many different regulations. But all FR is not created equal. Do you know all the factors to consider when making your FR purchase?

To help you make this important decision, the FR experts here at Bulwark have put together a list of their top 10 things to consider when buying FR. Read on to ensure the FR clothing you choose will keep your guys safe and compliant, no matter what the job throws at them.

TOP 10 THINGS TO CONSIDER WHEN BUYING FR CLOTHING:

1. PROTECTION
Your number one priority should always be ensuring that your FR clothing offers the correct level of protection against your hazard, whether it’s electric arc, flash fire or combustible dust.

2. GUARANTEE
Your FR clothing’s stated protection level should be guaranteed for the life of the garment. No exceptions.

3. COMPLIANCE
Your FR clothing must meet, or better yet exceed, the safety and performance standards required by your industry, such as OSHA 1910.269 for Electric Utility and NFPA® 2112 for Oil & Gas.

4. COMFORT
Your selected FR clothing should be comfortable to wear (cool, lightweight, moisture-wicking, breathable, fit properly) so it doesn’t interfere with job performance or cause additional safety concerns.

5. MOISTURE MANAGEMENT
To avoid discomfort, FR clothing should be made from fabrics that provide moisture control, with sweat-wicking and fast-drying properties.

6. FIT RETENTION
Your FR clothing should retain its size, shape and fit with minimal shrinking when laundered.

7. FABRIC DURABILITY
Your FR clothing should be made with durable fabric that is strong enough to resist tears, rips and holes.

8. GARMENT STRENGTH
The construction of your FR clothing should be sound, including strong seams and reinforced fabric in high-stress areas.

9. COLOR RETENTION
Your FR garments should not lose their color after laundering.

10. VENDOR SUPPORT
FR safety regulations are complicated. The company you buy from should offer the tools you need to better understand FR, navigate changing industry standards, build your business, and—above all else—create a culture of compliance.

Industry News
Multi-Hazard Protective Clothing

GARMENTS ADDRESS FLASH FIRE, ARC FLASH, CHEMICAL SPLASH & POOR VISIBILITY

Multitasking is everywhere. Not just in the way we live our lives, but also in the products we use every day. Our cellphones now access the internet and double as calculators, GPS systems, cameras and more. Our watches don’t just tell time, but also count our steps, monitor our heart rates and alert us when we have new text messages. So why shouldn’t our protective apparel serve more than one purpose as well?

According to Frost and Sullivan’s North American Industrial Protective Clothing Market Forecast to 2020, apparel with multiple protective functionalities is becoming increasingly popular. This isn’t surprising, considering that many occupations involve more than one hazard — and most people would rather not wear extra layers of protective apparel or change clothes several times throughout the day to address each hazard they might encounter.

DEFINING THE NEED

Protective clothing is only effective if it is worn consistently and correctly. The best way to encourage proper use is to make the protective apparel as comfortable and easy to wear as possible. By reducing the number of different garments and/or layers necessary for proper protection, you can help increase the likelihood that protective workwear won’t be worn improperly, or worse, forgotten or forgone entirely.

In this way, multi-hazard protective apparel is a major step in improving safety. It provides a much more convenient and practical way to address protection against common workplace hazards, helping inspire increased wearer compliance.

Due to the significant advantages multi-hazard protective clothing offers, a variety of garments have been developed to address some of the most common hazard combinations in today’s work environments.

FLASH FIRE AND ARC FLASH

While a variety of industries face both flash fire and arc flash, employees working in utilities or oil and gas may be particularly likely to need protection against these two hazards. As a result, there is a need for multi-hazard protective apparel that meets the unique demands of those industries.

To address this need, flame-resistant (FR) clothing manufacturers have begun developing garments that meet the requirements of both NFPA 2112, the Standard on Flame-Resistant Garments for Protection of Industrial Personnel Against Flash Fire, and NFPA 70E, the Standard for Electrical Safety in the Workplace. Various multi-hazard protection options are even available to meet the specific requirements for each of the NFPA 70E personal protective equipment (PPE) categories. As an added bonus, some of these multi-hazard garments provide protection against small molten metal splatter as well.

CHEMICAL SPLASH AND THERMAL HAZARDS

In many environments where thermal hazards such as arc flash or flash fire are present, there is also a risk of chemical splash. This combination of hazards may be a concern for those working in laboratories, food processing, machinery and transportation, agriculture, or anywhere else flammable substances or liquid chemicals are present.

Fortunately, recent clothing innovations combining chemical-splash protective technology with FR fabric have made simultaneous protection against these hazards significantly more comfortable and convenient. You can now purchase lab coats that offer lightweight, breathable protection against both thermal hazards and inadvertent chemical splash — and other products aren’t far away.

POOR VISIBILITY AND THERMAL HAZARDS

It is not uncommon to find thermal hazards in work environments where there is also poor visibility, resulting in a need for both FR and high-visibility protection. Even if it is worn over FR clothing, non-FR high-visibility clothing can ignite, continue to burn and even melt when exposed to heat and flame, endangering the wearer. But choosing to forego high-visibility clothing can be just as dangerous.

To solve this problem, FR clothing manufacturers developed high-visibility FR clothing that meets the requirements of the ANSI/ISEA 107-2015 Standard for High-Visibility Safety Apparel and Accessories as well as NFPA 70E and NFPA 2112. Now available in a variety of styles of vests, T-shirts and beyond, high-visibility FR clothing is a safety game-changer for workers in industries ranging from electrical utilities to oil and gas.

A FINAL NOTE

While multi-hazard protection can be the perfect solution in many work environments, it is not right for everyone. When selecting workwear, safety should always be the top priority. To evaluate the best protective clothing options for your workplace, begin by thoroughly assessing all potential hazards and consulting the applicable safety standards. From there, other factors such as comfort, long-term cost-effectiveness and style preferences should be taken into account.

If multi-hazard protection sounds like the right choice for you, remember that it is not all garments are created equal. In addition to providing combined protection against relevant hazards, the multi-hazard protection products you choose should be able to meet the demands of your work environment. For the best on-the-job performance and longest wear life, look for garments that are built for durability and made from high-quality, low-shrinkage fabrics. When it comes to comfort, you’ll want to find products that support ease of movement, fit properly, offer good breathability and help manage moisture. Since many of these factors are subjective, you may wish to work with a manufacturer that offers wear trials so you can test out your options before making a purchase.

Multi-hazard protection is already making a significant difference in safety, and these innovations are only the beginning. As work environments continue to evolve and the workwear industry shapes itself in response, new and better ways of protecting workers will continue to unfold.

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