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FR & ARC TERMINOLOGY

ARC FLASH

An explosive release of energy caused by an electrical arc. An Arc Flash results from either a phase to ground or a phase to phase fault caused by such occurrences as accidental contact with electrical systems, build up of conductive dust, corrosion, dropped tools, and improper work procedures. During an Arc Flash, the temperature can reach 35,000° Fahrenheit, and exposure to an Arc Flash can result in serious burn injury and death. Every year, more than 2,000 people are admitted to burn centers with severe Arc Flash burns. 


ARC RATING

A value of the energy necessary to pass through any given fabric to cause with 50% probability a second or third degree burn. This value is measured in calories/cm². The necessary Arc Rating for an article of clothing is determined by a Arc/Risk Assessment and the resulting Arc value. Usually measured in terms of ATPV or EBT.


ARC (ARC RISK CATEGORY)

The five Arc Risk Categories are specified by the chart listed in NFPA 70E. The chart, based on specific job tasks, ranges from HRC 1 (which is low risk and allows for 100% treated cotton), up to HRC 4 (which is high risk and requires FR clothing with a minimum arc rating of 40). The HRC is used to determine the necessary arc rating of a garment worn during a given job task.


CALORIE

The energy required to raise one gram of water one degree Celsius at one atmosphere pressure. Second-degree burns occur at 1.2 calories per centimeter squared per second (cal/cm²).


FLASH HAZARD

A dangerous condition caused by the release of energy from an electric Arc.


FLASH HAZARD ANALYSIS

A study investigating the potential exposure to Arc Flash energy that a worker faces while performing a specific job task. The data collected in a Flash Hazard Analysis is used for the purpose of injury prevention and the determination of safe work practices and the appropriated levels of FR clothing and PPE.


FLASH PROTECTION BOUNDARY

The distance from an exposed live part within which a person could receive a second-degree burn if an electrical Arc were to occur. 


FR (FLAME RESISTANT)

FR refers to the ability of a material to self-extinguish upon the removal of an ignition source.


NFPA® 70E

A work standard published by the National Fire Protection Association (NFPA) that covers aspects of electrical safety in the workplace. It includes the recommendation that those who work with, on or around energized equipment use adequate protection, including FR clothing.

View as Grid List

ProGARM 2240 FR KneePad

2240
Type: KNEEPAD
Sizes: W 145mm x L 235mm
£18.90 excl vat

ProGARM 8220 Baselayer Leggings

8220
Fabric : Flame Resistant
Type : BASELAYER LEGGINGS
£50.90 excl vat

ProGARM 7638 Arc Trouser

7638
Fabric : Flame Resistant
Type : ARC TROUSER
£93.46 excl vat

ProGARM 7636 Arc Ladies Trousers

7636
Fabric : Flame Resistant
Type : LADIES TROUSER
£93.46 excl vat

ProGARM 7414 Ladies Arc Trouser

7414
Fabric : Flame Resistant
Type : LADIES ARC TROUSER
£111.90 excl vat

ProGARM 7418 Arc Trouser

7418
Fabric : Flame Resistant
Type : ARC TROUSER
£111.90 excl vat
ProGARM 5814 Arc Ladies Trouser
-7%
ProGARM 5814 Arc Ladies Trouser

ProGARM 5814 Arc Ladies Trouser

5814
Fabric : Flame Resistant
Type : LADIES TROUSER
£122.90 excl vat £114.30 excl vat
ProGARM 5816 Arc Trouser
-7%
ProGARM 5816 Arc Trouser

ProGARM 5816 Arc Trouser

5816
Fabric : Flame Resistant
Type : ARC TROUSER
£122.90 excl vat £114.30 excl vat
ProGARM 4614 Ladies Arc Trouser
-15%
ProGARM 4614 Ladies Arc Trouser

ProGARM 4614 Ladies Arc Trouser

4614
Fabric : Flame Resistant
Type : LADIES ARC TROUSER
£139.00 excl vat £118.15 excl vat
ProGARM 4616 Arc Trouser
-15%
ProGARM 4616 Arc Trouser

ProGARM 4616 Arc Trouser

4616
Fabric : Flame Resistant
Type : ARC TROUSER
£139.00 excl vat £118.50 excl vat
ProGARM 5810 Arc Ladies Trouser
-15%
ProGARM 5810 Arc Ladies Trouser

ProGARM 5810 Arc Ladies Trouser

5810
Fabric : Flame Resistant
Type : LADIES TROUSER
£148.49 excl vat £126.22 excl vat
ProGARM 7720 Combat Trouser
-15%
ProGARM 7720 Combat Trouser

ProGARM 7720 Combat Trouser

7720
Fabric : Flame Resistant
Type : Combat Trouser
£161.08 excl vat £136.92 excl vat

ProGARM 5815 Arc Trouser

5815
Fabric : Flame Resistant
Type : ARC TROUSER
£148.49 excl vat
ProGARM 7715 HI-VIS Combat Trousers
-15%
ProGARM 7715 HI-VIS Combat Trousers

ProGARM 7715 HI-VIS Combat Trousers

7715
Fabric : Flame Resistant
Type : Combat Trouser
£204.42 excl vat £173.76 excl vat
ProGARM-9155-Waterproof-Dungaree-Front
New
ProGARM-9155-Waterproof-Dungaree-Front
£182.70 excl vat
ProGARM-9144-Waterproof-Dungaree-Front
New
ProGARM-9144-Waterproof-Dungaree-Front
£182.70 excl vat
ProGARM 7522 HI-VIS Dungaree
-16%
ProGARM 7522 HI-VIS Dungaree

ProGARM 7522 HI-VIS Dungaree

7522
Fabric : Flame Resistant
Type : Dungaree
£242.92 excl vat £206.48 excl vat
ProGARM 4693 HI-VIS Arc Coverall
-16%
ProGARM 4693 HI-VIS Arc Coverall

ProGARM 4693 HI-VIS Arc Coverall

4693
Fabric : Flame Resistant
Type : Coverall
£291.77 excl vat £248.00 excl vat
ProGARM 9622 Lightweight WaterProof Trouser
-15%
ProGARM 9622 Lightweight WaterProof Trouser

ProGARM 9622 Lightweight WaterProof Trouser

9622
Fabric : Flame Resistant
Type: LIGHTWEIGHT WATERPROOF TROUSER
£309.85 excl vat £263.38 excl vat
ProGARM 9880 WaterProof Salopette
-15%
ProGARM 9880 WaterProof Salopette

ProGARM 9880 WaterProof Salopette

9880
Fabric : Flame Resistant
Type: WATERPROOF SALOPETTE
£318.55 excl vat £270.77 excl vat
ProGARM 9820 Lightweight WaterProof Trouser
-15%
ProGARM 9820 Lightweight WaterProof Trouser

ProGARM 9820 Lightweight WaterProof Trouser

9820
Fabric : Flame Resistant
Type: LIGHTWEIGHT WATERPROOF TROUSER
£340.84 excl vat £289.72 excl vat

ProGARM 9660 WaterProof Salopette

9660
Fabric : Flame Resistant
Type: WATERPROOF SALOPETTE
£318.55 excl vat
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