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Additional Information about Arc Flash Protective Equipment
Flashbarrier Arc Suppression Blanket
Protection for the industrial and utility electrician from arc blasts peripheral to the work area. The new Flashbarrier arc suppression blanket is built with proprietary fabric technologies to provide a passive barrier from peripheral arc blasts. Ideal for confined spaces such as underground vaults, the blanket will reduce the effects of an arc blast occurring beyond the primary work area. The blanket has been tested under arc conditions and is rated at 15 KV or 25 KV depending on model. An ideal compliment to the Flashguard line of Arc Flash suits, the Flashbarrier blanket, when properly used, will reduce the extent of the worker's exposure during an open arc event.
Constructed with a multi layer design, the blanket is designed to deflect the energy of the arc blast. The blanket is fitted with strong Kevlar straps with carabineers, especially developed for this application. The blanket can be installed and removed even while wearing gloves. The Flashbarrier Arc Suppression Blanket offers five significant advantages over many of it's competitors' blankets:
Cost - The Flashbarrier blanket often costs significantly less than other blankets
Weight - The Flashbarrier blanket is lightweight, but rugged for everyday use and strong against the force of an arc explosion
Resists Degradation - The Flashbarrier blanket is manufactured with a Carateen construction, which will not degrade due to exposure to the sun's UV energy. Most competitor blankets are made with Nomex® or Kevlar® which must be protected from exposure to the sun's UV
Smoke and Flame - The Flashbarrier blanket will not smoke and flame when exposed to the arc's thermal energy, unlike other blankets constructed from Nomex and Kevlar. Smoke and flames created in an enclosed space, like an underground vault could make it very difficult to rescue a worker with injuries resulting from an arc explosion
Oberon Name - over 60 years experience manufacturing industrial safety products
Boddingtons Electrical recommends that you always perform a hazardous site assessment of your workplace to ensure that you are using the correct protective devices and PPE (Personal Protective Equipment) for your application. The Flashbarrier Blanket is available in two sizes. Custom sizes also available.
Blankets are designed to provide a passive barrier between the worker and associated equipment such as cables, splices and switches. They are not intended as a substitution for appropriate PPE or insulation from shock.
ArcShield
The arc rated faceshield for the electrical worker. Electrical work is dangerous work. Yet not every electrical worker is required by the hazards of the job to wear a full hood. For these applications, where the potential arc thermal energy is quite low, the ArcShield is ideally suited.
The ArcShield incorporates a unique Face-Fit® faceshield. The faceshield, manufactured from molds that are optically polished, offers excellent distortion free vision.
Viewing area is a large 8" X 14", for excellent unobstructed visibility of your job.
The ArcShield is manufactured with proprietary Arc-X thermal protecting energy absorbing polycarbonate. This material is especially designed to trap the thermal energy of the arc explosion, and not transmit it through the faceshield to the worker.
The ArcShield is available with a permanent anti-fog coating on the inner surface and a second scratch-resistant coating on the outer surface for those who need these extra features.
The ArcShield has been tested under actual arc conditions to provide up to 12 cal/cm2 protection. It is imPORT 67,107,169,130,132,236 or a lightweight, comfortable, breathable feel. The use of FR fabric is important for compliance with electrical safety standards.
Arc Flash Cooling Vest
The vest is dielectric with no metal parts.
The Arc Flash Cooling Vest and cooling packs have been arc tested under arc conditions in a laboratory and have been determined to comply with OSHA 29CFR 1910.269 I,6,iii
The cooling packs are designed to provide approximately 2 hours of cooling to the user depending upon the ambient temperatures and the exertion level of the worker wearing the vest. The cooling packs are easily recharged by placing them in ice water before use. A spare set can be kept in a cooler and rotated with those in the vest for continuous use.
The Arc Flash Cooling Vest is available in two sizes: regular and tall
WARNING: Arc Flash Cooling Vests should be used in conjunction with and under proper arc rated garments. Vest is not intended as a primary arc flash protection. Vest has been arc tested, but is not arc rated (due to the limited surface area covered by the vest)
Electric Arc Flash Protection Guidelines
If the label does not say it, do not use it!!!
F1506 details the specifications of a textile to be used by an electrical worker as a means of electrical protection. A garment must include a label, which states ALL six of these items to qualify as an ARC protective garment:
1. Tracking Identification Code
2. Meets F1506
3. Manufacturer's Name
4. Care Instructions & Fibre Content
5. Size and other associated standard labelling
6. "Arc Rating" - ATPV or EBT
"When garments are made with a different number of fabric layers in different areas of the garment, the arc rating for each area shall be designated. Pockets, trim, closures, seams, labels and heraldry shall not be considered as extra layers"
All Arc Flash garments are not created equal!
F1959 details the standardized test method, which must be employed to determine the thermal protective value of a textile material in an Electrical Arc application.
Stoll Curve - curve used to predict the onset of a second degree burn
Requires a minimum of 20 test data points
Arc Rating:
ATPV: defined as the minimum incident thermal energy that causes the onset of a second degree burn when Stoll is reached without breakopen occurring
EBT: defined as the average of five or more highest incident exposure energy values (without breakopen) below Stoll when breakopen occurs before reaching Stoll
We DO NOT recommend using EBTAS because you will not be in compliance with F-1506 nor NFPA 70E and a second or third degree burn could result using this value. EBTAS by definition is a rating above Stoll (occurrence of second degree burn). EBTAS is used primarily in the Rainwear standard (ASTM F1891).
Flame retardant clothing is a requirement!
"The employer shall ensure that each employee who is exposed to the hazards of flames or electric arcs does not wear clothing that, when exposed to flames or electric arcs, could increase the extent of injury that would be sustained by the employee." Note: Employee shall not wear clothing made from the following types of fabrics, either alone or in blends: acetate, nylon, polyester, rayon.
Clarifications - June 1994 - Employers must make a determination of whether or not 100% cotton or wool clothing worn by a worker is acceptable under the conditions to which the worker could be exposed. Clothing made from flame retardant or flame resistant materials, in accordance with ASTM F1506, is acceptable under the rule.
Clothing used must prevent second degree burn!
The protective clothing selected for a partsicular application shall have an arc protective rating (EBT or ATPV) higher than the hazard to prevent the onset of a second degree burn.
Flash hazard analysis shall be done before a person approaches a hazard
Employees working in areas where there is an electrical hazard shall be provided with, and shall use, appropriate protective equipment
The entire flash suit, including the window, shall have energy absorbing characteristics that are suitable for the arc-flash exposure.
Voltage does not determine Hazard Category levels. Knowing the voltage is only one piece for determining the Arc Flash protective clothing. The available fault current, the clearing time, the working distance and the type of equipment are also needed to determine the potential Arc Flash exposure level and the required PPE.
Before you can assess the arc flash protection needed for a task, you must first determine the potential arc flash exposure level by conducting a hazard analysis. It is the arc flash exposure level that will dictate the arc flash protection needed.
Resources for conducting hazard analysis:
Electrical Engineering Studies
IEEE P1584 Standard
Software Programs
NFPA 70E Annex D
NFPA 70E Table 130.7(C)(9)(a)
Oberon's STEP 1-2-3 Program
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