2-2015 NFPA 70E Changes

(1)

NFPA 70E: Standard for Electrical

Safety in the Workplace

Overview of Major 2015 Changes

(2)

The 2015 Has Arrived!

•

• The NFPA 70E was first

The NFPA 70E was first

published in 1979 at the

request of OSHA.

•

• The 2015 Edition is the tenth to

The 2015 Edition is the tenth to

be published.

•

• Each edition is made to bring

Each edition is made to bring

clarification and a safer work

environment.

•

• The 2015 edition brings in

The 2015 edition brings in

some major changes.

(3)

The 2015 Has Arrived!

•

• The NFPA 70E was first

The NFPA 70E was first

published in 1979 at the

request of OSHA.

•

• The 2015 Edition is the tenth to

The 2015 Edition is the tenth to

be published.

•

• Each edition is made to bring

Each edition is made to bring

clarification and a safer work

environment.

•

• The 2015 edition brings in

The 2015 edition brings in

some major changes.

(4)

Global Changes

2012

Edition

2015

Edition

Harm

Injury

Injury or

or Damage

Damage to

to Health

Health

Probablility

Likelihood

Probablility

Likelihood

Work

Work Shoes

Shoes

Footwear

Arc Flash Hazard Analysis

Arc Flash Risk Assessment

Shock

(5)

Global Changes

These Global Changes provide

accuracy and better harmonize with

other standards addressing risk

(6)

Definitions

Qualified Person. One who has demonstrated

skills and knowledge related to the construc- tion

and operation of electrical equipment and

installations and has received safety training to

identify and avoid the hazards involved.

Risk. A combination of the likelihood of occurrence

of injury or damage to health and the severity of

injury or damage to health that results from a

hazard.

(7)

Definitions

Risk Assessment. An overall process that

identifies hazards, estimates the potential severity

of injury or damage to health, estimates the

likelihood of occurrence of injury or damage to

health, and determines if protective measures are

required.

InformationalNote: As used in this standard, arc

flash risk assessment and shock risk assessment

are types of risk assessments.

(8)

Article 110.1(A)

Electrical Safety Program.

General. The employer shall implement and document an overall

electrical safety program that directs activity appropriate to the risk

associated with electrical hazards. The electrical safety program

shall be implemented as part of the employer’s overall occupational

health and safety management system, when one exists.

Informational Note No. 1: Safety-related work practices such as

verification of proper maintenance and installation, alerting

techniques, auditing requirements, and training requirements

provided in this standard are administrative controls and part of an

overall electrical safety program.

(9)

Article 110.1(B)

Electrical Safety Program.

Maintenance.The electrical safety program shall

include elements that consider condition of

(10)

Article 110.2(C)(1)

Training Requirements

Emergency Response Training

Contact Release. Employees exposed to shock

hazards shall be trained in methods of safe release

of victims from contact with exposed energized

electri- cal conductors or circuit parts. Refresher

training shall occur annually.

(11)

Article 110.2(C)(2)

Tr

aining Requirements

First A id, Emergency Response, and Resus citation

(a) Employees responsible for responding to medical emergencies shall

be trained in first aid and emer- gency procedures.

(b) Employees responsible for responding to medical emergencies shall

be trained in cardiopulmonary resuscitation (CPR). Refresher training shall

occur annually.

(c) Employees responsible for responding to medical emergencies shall

be trained in the use of an auto- mated external defibrilator (AED) if an

employer’s emergency response plan includes the use of this device.

Refresher training shall occur annually.

Employers shall verify at least annually that employee training required by

this section is current.

(12)

Article 130.2(A)(4)

This was added in the 2015 Text:

Normal Operation: Normal operation of electrical equipment shall

be permitted where all of the following conditions are satisfied:

(1) The equipment is properly installed.

(2) The equipment is properly maintained.

(3) The equipment doors are closed and secured.

(4) All equipment covers are in place and secured.

(5) There is no evidence

**This is in accordance with manufacturer and industry codes and

standards. Physical damage, arcing, deterioration, and overheating

are all signs of impending failure.

(13)

Article 130.2(B)(1)

Energized Electrical Work Permits

When Required: When energized work is permitted in

accordance with 130.2(A), and energized electrical work permit

shall be required under the following conditions:

(1) When work is performed within the restricted approach

boundary

(2) When the employee interacts with the equipment when

conductors or circuit parts are not exposed but an increased

likelihood of injury from an exposure to an arc flash hazard

exists.

(14)

Article 130.2(B)(3)

Energized Electrical Work Permit s

Exempti ons to Work Permit : An energized work permit shall not be required if a

qualified person is provided with and uses appropriate safe work practices and PPE

under any of the following conditions:

(1) Testing, troubleshooting,and voltage measuring

(2) Thermography and visual inspections if the restricted approach boundary is not

crossed

(3) Access and egress from an area with energized electrical equipment if no

electrical work is performed and the restricted approach boundary is not crossed

(4) General housekeeping and miscellaneous non-electrical tasks if the restricted

(15)

Article 130.4(A)

Shock Risk Assessment:

A shock risk assessment shall determine the

voltage to which personnel will be exposed, the

boundary requirements, and the PPE necessary in

order to minimize the possibility of electric shock to

personnel.

(16)

Prohibited Approach Boundary Limited Approach Boundary Restricted Appr oach Boundary

(17)

Ar c Flash Bo un dar y

Limited Approach Boundary

Exposed Energized Conductor

or Circuit Part

Restri cted Approach Boundary

Limited Space

Restr icted Space

(18)

Table 130.4(D)(a)

Approach Boundaries for Shock Protection for Alternating Current Systems

Nominal System

Voltage Range, Phase

to Phase

Limited Approach Boundary

Restricted Approach

Boundary; Includes

Inadvertent

Movement Adder

Exposed Movable

Conductor

Exposed Fixed Circuit

Part

<50V Not specified Not specified Not specified

50 V – 150 V 3.0 m (10 ft 0 in) 1.0 m (3 ft 6 in) Avoid contact 151 V – 750 V 3.0 m (10 ft 0 in) 1.0 m (3 ft 6 in) 0.3 m (1 ft 0 in) 751 V – 15 kV 3.0 m (10 ft 0 in) 1.5 m (5 ft 0 in) 0.7 m (2 ft 2 in) 15.1 kV – 36 kV 3.0 m (10 ft 0 in) 1.8 m (6 ft 0 in) 0.8 m (2 ft 7 in) 36.1 kV – 46 kV 3.0 m (10 ft 0 in) 2.5 m (8 ft 0 in) 0.8 m (2 ft 9 in) 46.1 kV – 72.5 kV 3.0 m (10 ft 0 in) 2.5 m (8 ft 0 in) 1.0 m (3 ft 3 in) 72.6 kV – 121 kV 3.3 m (10 ft 8 in) 2.5 m (8 ft 0 in) 1.0 m (3 ft 4 in) 138 kV – 145 kV 3.4 m (11 ft 0 in) 3.0 m (10 ft 0 in) 1.2 m (3 ft 10 in) 161 kV – 169 kV 3.6 m (11 ft 8 in) 3.6 m (11 ft 8 in) 1.3 m (4 ft 3 in) 230 kV – 242 kV 4.0 m (13 ft 0 in) 4.0 m (13 ft 0 in) 1.7 m (5 ft 8 in) 345 kV – 362 kV 4.7 m (15 ft 4 in) 4.7 m (15 ft 4 in) 2.8 m (9 ft 2 in) 500 kV – 550 kV 5.8 m (19 ft 0 in) 5.8 m (19 ft 0 in) 3.6 m (11 ft 10 in) 765 kV – 800 kV 7.2 m (23 ft 9 in) 7.2 m (23 ft 9 in) 4.9 m (15 ft 11 in)

(19)

Article 130.5

Ar c Flash Risk A ss essmen t: An arc flash risk assessment shall be performed and shall:

(1) Determine if an arc flash hazard exists. If an arc flash hazard exists, the risk assessment shall

determine:

a. Appropriate safety-related work practices

b. The arc flash boundary

c. The PPE to be used within the arc flash boundary

(2) Updated with major modifications and reviewed periodically, at intervals not to exceed 5 yrs.

(3) Take into consideration the design of the overcorrect protective device and its opening time,

including its condition of maintenance.

Informational Note No. 1: Where equipment is not properly installed or maintained, PPE

selection based upon incident energy analysis or the PPE category method may not provide

adequate protection from arc flash hazards.

(20)

Article 130.5(C)

Arc Flash PPE: One of the following methods shall be

used for the selection of PPE. Either, but not both, methods

shall be permitted to be used on the same piece of

equipment. The results of an incident energy analysis to

specify an arc flash PPE Category in Table 130.7(C)(16)

shall not be permitted.

(1) Incident Energy Analysis Method.

(2) Arc Flash PPE Categories Method.

(21)

HRC #1

4 cal/cm2_Min.

HRC #0

(100% Natural Fibers):

HRC #2

8 cal/cm2_Min.

HRC #3

25 cal/cm2_Min.

HRC #4

40 cal/cm2_Min.

Hazard Risk Categories

PPEC #0

PPEC #1

1.2-4 Cal/cm

2

PPEC #2

4.1-8 Cal/cm

2

PPEC #3

8.1-25 Cal/cm

2

PPEC #4

25.1-40 Cal/cm

2

PPE Categories

(22)

Arc-Rated vs.

Flame-Resistant

Protective equipment and clothing that is intended for protection

from an arcing fault must be rated by the manufacturer for use in

an environment influenced by an electrical arc. Although the term

flame resistant (FR) has been used in previous editions of NFPA

70E, an FR marking on a garment does not necessarily mean it is

arc rated. The term flame resistant is no lon ger used in NFPA

70E; this change has been made to clarify that only clothing or

other PPE with an arc rating is acceptable for protecting persons

against arc flash hazards. The term flame resistant could indicate

exposure to other events such as flames from a fire. As an

example, FR clothing for race car drivers or pilots is not suitable

for arc flash protection. Arc-rated clothing is the only clothing

marked with the cal/cm2 rating.

(23)

Article 130.5(D)

Equipment Labeling: Electrical equipment such as switchboards,

panelboards, industrial control panels, meter socket enclosures, and motor

control centers that are in other than dwell- ing units and that are likely to

require examination, adjustment, servicing, or maintenance while energized

shall be field-marked with a label containing all the following information:

(1) Nominal System Voltage

(2) Arc Flash Boundary

(3) At least one of the following:

a. Available incident energy and the corresponding working distance, or

the arc flash PPE category for the equipment, but not both

b. Minimum arc rating of clothing

c. Site-specific level of PPE

(24)

Article 130.5(D)

WARNIN

G

Equi pment Bus: PAINT ROOM MCC-1 Lock out Device: MDP-1 3B

Date: 1/1/14

Reference Document: IEEE Std 1584 through 1584b-2011

PPE: Reference NFPA 70E-2012 Table 130.7 (C)(16)

#2

Nominal System Voltage 480V Arc Flash Boundary 38” Limited Approach Boundary 42” Restricted Approach Boundary 12” Prohibited Approach Boundary 1”

Hazard Risk

Category @ 18”

Arc Flash and Shock Hazard

Appropriate PPE Required

(25)

Article 130.5(D)

WARNIN

G

Date: 1/1/14

PPE: Reference NFPA 70E-2012 Table 130.7 (C)(16)

6.5 cal/cm

2

_{@ 18”}

Arc Flash and Shock Hazard

Appropriate PPE Required

(26)

Article 130.5(D)

The

owner

of the electrical

equipment shall be responsible

for the documentation,

installation, and maintenance of

the field-marked label.

(27)

Article 130.7(15)(A)-(B)

Al ter nati ng Curr ent (ac) Equipm ent : When selected in lieu of the incident energy

analysis of 130.5(B)(1), Table 130.7(C)(15)(A)(a) shall be used to identify when arc

flash PPE is required. When arc flash PPE is required, Table 130.7(C)(15)(A)(b)

shall be used to determine the arc flash PPE category. The estimated maximum

available short-circuit current, maxi- mum fault-clearing times, and minimum

working distances for various ac equipment types or classifications are listed in

Table 130.7(C)(15)(A)(b). An incident energy analysis shall be required in

accordance with 130.5 for the following:

(1)Tasks not listed in Table130.7(C)(15)(A)(a)

(2)Power systems with greater than the estimated maximum available short-circuit

current

(3)Power systems with longer than the maximum fault clearing times

(4)Tasks with less than the minimum working distance

(28)

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

Arc Flash Hazard Identification for Alternating Current and Direct Current Systems

Task

Equipment Condition

Ar c Fl ash PPE

Required

Reading a panel meter while operating a meter

switch Any No

Normal operation of a circuit breaker (CB), switch, contactor, or starter

All of the following:

The equipment is properly installed The equipment is properly maintained All equipment doors are closed and secured All equipment covers are in place and secured

There is no evidence of impending failure

No

One or more of the following:

The equipment is not properly installed The equipment is not properly maintained Equipment doors are open or not secured Equipment covers are off or not secured There is no evidence of impending failure

Yes

For dc system: Work on energized electrical conductors and circuit parts, including voltage

testing

Any Yes

For dc system: Work on energized electrical conductors and circuit parts of series-connected

battery cells, including voltage testing

(29)

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

Arc Flash Hazard PPE Categories for Alternating Current

Equipment

Ar c Fl ash PPE

Ar c Flas h

Boundary

Panelboards or other equipment rated 240 V and

below Parameters: Maximum of 25 kA short-circuit current available; maximum of 0.03 sec (2 cycles) fault clearing time; working distance 455 mm (18 in.)

1 19 in.

Panelboards or other equipment rated >240 V and up to 600 V Parameters: Maximum of 25 kA short-circuit current available; maximum of 0.03 sec (2 cycles) fault clearing time; working distance 455 mm (18 in.)

2 3 ft.

600-V class motor control centers (MCCs) Parameters: Maximum of 65 kA short-circuit current available; maximum of 0.03 sec (2 cycles) fault clearing time; working distance 455 mm (18 in.)

2 5 ft.

600-V class motor control centers (MCCs) Parameters: Maximum of 42 kA short-circuit current available; maximum of 0.33 sec (20 cycles) fault clearing time; working distance 455 mm (18 in.)