NFPA 70E AMD 1-2017 Standard for Electrical Safety in the Workplace (Effective Date 09 6 2017).pdf

1、 Tentative Interim Amendment NFPA70EStandard for Electrical Safety in the Workplace2018 Edition Reference: Annex H.2 TIA 18-1 (SC 17-8-20 / TIA Log #1253R) Note: Text of the TIA was issued and approved for incorporation into the document prior to printing. 1. Revise Annex H.2 to read as follows: H.2

2、 Simplified Two-Category Clothing Approach for Use with Table 130.5, Table 130.7(C)(15)(a), Table 130.7(C)(15)(b), and Table 130.7(C)(15)(c). The use of Table H.2 is a simplified approach to provide minimum PPE for electrical workers within facilities with large and diverse electrical systems. The c

3、lothing listed in Table H.2 fulfills the minimum arc-rated clothing requirements of Table 130.5(C), Table 130.7(C)(15)(a), Table 130.7(C)(15)(b), and Table 130.7(C)(15)(c). The clothing systems listed in this table should be used with the other PPE appropriate for the arc flash PPE category see Tabl

4、e 130.7(C)(15)(c). The notes to Table 130.5(C), Table 130.7(C)(15)(a), and Table 130.7(C)(15)(b), and Table 130.7(C)(15)(c) must apply as shown in those tables. Table H.2 Simplified Two-Category, Arc-Rated Clothing System ClothingaApplicable TasksSituations Everyday Work Clothing Arc-rated long-slee

5、ve shirt with arc-rated pants (minimum arc rating of 8) or Arc-rated coveralls (minimum arc rating of 8) All arc flash PPE category 1 and arc flash PPE category 2 tasks listed in Situations where a risk assessment indicates that PPE is required and where Table 130.5 130.7(C)(15)(a), and Table 130.7(

6、C)(15)(b) specify arc flash PPE category 1 or 2bArc Flash Suit A total clothing system consisting of arc-rated shirt and pants and/or arc-rated coveralls and/or arc flash coat and pants (clothing system minimum arc rating of 40) All Arc Flash PPE Category 3 and Arc Flash PPE Category 4 tasks listed

7、in Situations where a risk assessment indicates that PPE is required and where Table 130.5 130.7(C)(15)(a), and Table 130.7(C)(15)(b) specify arc flash PPE category 3 or 4baNote that other PPE listed in Table 130.7(C)(16) 130.7(C)(15)(c), which include arc-rated face shields or arc flash suit hoods,

8、 arc-rated hard hat liners, safety glasses or safety goggles, hard hats, hearing protection, heavy-duty leather gloves, rubber insulating gloves and leather protectors could be required. The arc rating for a garment is expressed in cal/cm2. bThe estimated available fault current capacities and fault

9、 clearing times are listed in the text of Table 130.7(C)(15)(a) and Table 130.7(C)(15)(b). Various tasks are listed in Table 130.5. For tasks not listed, or for power systems with greater than the estimated short-circuit available fault current capacity or with longer than the assumed fault clearing

10、 times, or arcing durations, an arc flash risk assessment is required in accordance with 130.5. Table H.2 cannot be used and arc flash PPE must be determined and selected by means of an incident energy analysis in accordance with 130.5(G). Issue Date: August 17, 2017 Effective Date: September 6, 2017 (Note: For further information on NFPA Codes and Standards, please see www.nfpa.org/docinfo) Copyright 2017 All Rights Reserved NATIONAL FIRE PROTECTION ASSOCIATION