Table 130.7(C)(15)(A)(a) Notes - 90.2(A) Covered & 90.2(B) Not Covered 6/23/2015. Learning Obj

Change Summary

Table 130.7(C)(15)(A)(a)

^Notes

• The note to Table

130.7(C)(15)(A)(a) explains that where the table states “No,” an arc flash is not likely to occur.

• The task performed and the condition of the equipment are considered to determine the likelihood of an occurrence.

• Normal operation of properly installed and maintained equipment is not likely to expose employees to an arc flash hazard.

Notes

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Table 130.7(C)(15)(A)(a)

Notes

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Change Summary

Table 130.7(C)(15)(A)(b)

• A single Arc Flash PPE Category is now provided for equipment in Table 130.7(C)(15)(A)(b).

• Arc flash boundaries are converted from inches and rounded up to the nearest foot.

• The table is now limited to 15 kV and below.

• Both current limiting fuses and current limiting circuit breakers, 600 volts and below, 200 amps or less may reduce the category number by one.

Arc-Flash Hazard PPE Categories for Alternating Current (ac) Systems

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Table 130.7(C)(15)(A)(b)

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Change Summary

130.7(C)(15)(B)

• New 130.7(C)(15)(B) provides requirements for the Arc Flash PPE Category method in dc systems.

• Table 130.7(C)(15)(A)(a) identifies when arc flash PPE is required, ac and dc systems.

• Table 130.7(C)(15)(B) determines the arc flash PPE category, dc systems.

• Table 130.7(C)(16) provides the required PPE, as permitted in 130.5(C)(2).

Direct Current (dc) Equipment

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130.7(C)(15)(B)

Courtesy of NECA

Change Summary

Table 130.7(C)(15)(B)

• The dc Arc Flash PPE Category Table is now limited to voltages between 100 and 600 volts.

• Apparel exposed to electrolyte must meet requirements of multiple ASTM standards.

• The dc Arc Flash PPE Category Table is based on open air calculations, for tasks in an enclosure additional PPE, as high as 300%, should be considered.

Arc-Flash Hazard PPE Categories for Direct Current (dc) Systems

Table 130.7(C)(15)(B)

Change Summary

Table 130.7(C)(16)

• Arc Flash PPE Categories recognized are limited to 1 through 4 only.

• Previous protective clothing and PPE requirements of HRC 0 are deleted.

• The user is referred to Article 100 and the definition of “Arc Rating” to understand the impact of both ATPV and E_BT.

Personal Protective Equipment

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Table 130.7(C)(16)

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Change Summary

130.7(D)(1) & 130.7(E)(2)

• Insulated Tools and Equipment are required when working within the restricted approach boundary.

• Barricades are required at the furthest distance determined by the larger of either the limited approach boundary or the arc flash boundary.

(D)(1) Insulated Tools and Equipment & (E)(2) Barricades

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130.7(D)(1) & 130.7(E)(2)

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Change Summary

130.9

• Requirements in 110.5

Underground Electrical Lines and Equipment, are relocated to 130.9.

• 130.9 applies where a likelihood of contact with energized conductors or parts exists during an excavation.

• An assessment must be made and safe work practices along with PPE used when necessary.

Underground Electrical Lines and Equipment

Courtesy of NECA

130.9

Courtesy of NECA

Change Summary

130.10

• Before cutting/drilling walls, floors or equipment where a likelihood of contacting energized

conductors/parts exists, a risk assessment is required.

• The risk assessment; locates conductors, cables and raceways, creates electrically safe work condition, identifies work practices and PPE.

Cutting or Drilling

130.10

Change Summary

205.3

• The owner of electrical equipment or the owner’s designated representative is responsible for the equipment’s maintenance and all associated documentation.

• Maintenance decals can provide the employee with necessary information when assessing the maintenance status of electrical equipment.

• Proper maintenance of electrical equipment is required throughout NFPA 70E.

General Maintenance Requirements

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205.3

Courtesy of Burlington Electrical Testing

Change Summary

205.14

• Where flexible cords or cables are damaged, they must be repaired or replaced.

• A qualified person is permitted to replace cord caps on extension cords, tools, and equipment.

Flexible Cords and Cables (3) Repair and Replacement

Courtesy of NECA

205.14

Courtesy of NECA

Change Summary

250.4

• Test instruments used to verify absence or presence of voltage must be maintained.

• Test instruments and all associated test leads must be maintained to assure functional integrity.

• Operation verification tests must be performed to ensure functional verification of the test instrument.

Test Instruments

Courtesy of ATEI

250.4

Courtesy of ATEI

Change Summary

320.3(A)(1)

• A risk assessment of hazards is required prior to work on a battery system.

• Chemical, shock, arc flash hazards and the associated risk with the task to be performed must be

considered.

• Informational Note No. 2 in Table 130.7(C)(15)(B) explains that required arc flash PPE may need to be increased (up to 300%) where work is performed in an enclosure.

Battery Risk Assessment

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320.3(A)(1)

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Change Summary

O.2.3 & O.2.4

• Methods to reduce incident energy are explained including, zone selective interlocking, differential relaying and energy reduction maintenance switches.

• Other means to reduce incident energy are added including active arc-flash mitigation systems, arc flash relays, high resistance grounding and current limiting devices.

Informative Annex O

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O.2.3 & O.2.4

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1. The 2015 NFPA 70E now covers safety-related work practices in which of the following?

a. Installations in ships

b. Installations in underground and surface mines

c. Installations under the exclusive controls of an electric utility d. Installations used exclusively for signaling and

communications purposes for railways Questions

1. The 2015 NFPA 70E now covers safety-related work practices in which of the following?

a. Installations in ships

b. Installations in underground and surface mines

c. Installations under the exclusive controls of an electric utility d. Installations used exclusively for signaling and

communications purposes for railways Questions

2. Identify the assessment(s) that is/are required to determine the appropriate safety-related work practices before any person is exposed to the electrical hazards involved. (Select all that apply.)

a. Arc flash risk assessment b. Blast risk assessment c. Shock risk assessment d. Thermal burn assessment Questions

2. Identify the assessment(s) that is/are required to determine the appropriate safety-related work practices before any person is exposed to the electrical hazards involved. (Select all that apply.)

a. Arc flash risk assessment b. Blast risk assessment c. Shock risk assessment d. Thermal burn assessment Questions

3. Which one of the following options best defines a “hazard”

according to NFPA 70E ?

a. A source of certain injury or damage to health b. A source of possible injury or damage to health c. All Electrical Work and operations

d. An area identified with signs and barricades to alert that energized work is being performed

Questions

3. Which one of the following options best defines a “hazard”

according to NFPA 70E ?

a. A source of certain injury or damage to health b. A source of possible injury or damage to health c. All Electrical Work and operations

d. An area identified with signs and barricades to alert that energized work is being performed

Questions

4. The electrical safety program shall be audited to verify that the principles and procedures of the electrical safety program are in compliance with NFPA 70E. Field work shall be audited at intervals not to exceed __?__ year(s) to verify the requirements contained in the procedures of the electrical safety program are being followed.

a. 1 b. 3 c. 5 d. 7 Questions

5. Electrical equipment is required to be maintained in accordance with manufacturer’s instructions or industry consensus standards to reduce the risk associated with failure. Which of the following are identified in NFPA 70E as being responsible for maintenance of the electrical equipment and documentation? (Select all that apply.)

a. The contractor that installed the equipment

b. The entity contracted to perform an incident energy analysis c. The equipment owner or the owner’s designated representative d. The manufacturer of the equipment

Questions

a. The contractor that installed the equipment

b. The entity contracted to perform an incident energy analysis c. The equipment owner or the owner’s designated representative d. The manufacturer of the equipment

Questions

In document 90.2(A) Covered & 90.2(B) Not Covered 6/23/2015. Learning Objectives. 90.2(A) Covered & 90.2(B) Not Covered. Change Summary (Page 26-38)