| 233 1 ARC 2 ARC 3 ARC 4 ARC NFPA® 70E electrical safety related work practices for workplaces and requires employees working on or near energized parts and equipment to wear flame resistant clothing that meets the requirements of ASTM F1506. THE TEST NFPA 70E standard provides table 130.7(C)(16) as a guideline for the selection of protective apparel when working within the arc flash boundary. The higher the ARC rating value, the greater the protection. ARC 1 (which is low risk) ARC 4 (which is high risk and requires FR clothing with a minimum arc rating of 40). NFPA 70E ELECTRICAL SAFETY IN THE WORKPLACE ASTM F1959/F1959M is the test method for determining the ARC rating of materials forclothing. ASTM F1959/F1959M CHEMICAL THE RISK Risk of potential exposure to a light chemical spray, liquid aerosols or low pressure, low volume chemical splashes against which a complete liquid permeation barrier is not required. EN 13034 LIQUID CHEMICALS Protective clothing offering limited protectiveperformance against liquid chemicals (Type6 and Type PB [6] equipment). The standard covers both chemical protectiveunits (Type 6) and partial body protection(Type PB[6]). THE TEST Type 6 suits are tested using a fine spray of dye. The test subject wears an absorbent suit underneath the one to be tested, which absorbs any leaks and is stained by the dye. S uccess or failure is determined by measuring the total area of any stains on suits tested. A range of other tests is specified, including resistance to abrasion, tear strength, tensile strength, resistance to puncture, resistance to ignition, resistance to penetration by liquid chemicals and seam strength. EN 13034 PROTECTIVE CLOTHING AGAINST LIQUID CHEMICALS STANDARDS ARC RATED PPE CLOTHING DESCRIPTION REQUIRED MINIMUM ARC RATING OF PPE/CAL/ CM2 1 ARC: Arc rated FR Shirt and FR pants or FR Coverall 4 2 ARC: Arc rated FR Shirt and FR pants or FR Coverall 8 3 ARC: Arc rated FR Shirt and FR pants or FR Coverall, and arc flash suit selected so that the system arc rating meets the required minimum 25 4 ARC: Arc rated FR Shirt and FR pants or FR Coverall and arc flash suit selected so that the system arc rating meets the required minimum 40
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