A summary of arc-flash energy calculations

Doan, Daniel R.; Sweigart, R.A.

doi:10.1109/tia.2003.813724

Cited by 32 publications

(7 citation statements)

References 5 publications

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“…3 Another important term is flash protection boundary, which is defined as the distance from an arc flash source within which an unprotected person has a 50% chance of receiving a second degree burn (a curable burn). 4 Incident energy of 1.2 cal/cm 2 (5 J/cm 2 ) on unprotected skin is the generally accepted threshold for a 50% chance of sustaining a second degree burn [5]. Arc-rated clothing have an Arc Thermal Performance Value (ATPV) designation, which is the incident energy in cal/cm 2 (J/cm 2 ) for which the garment can limit heat transfer to the wearer to 1.2 cal/cm 2 (5 J/cm 2 ).…”

Section: A Arc Flash Hazard Analysis Requirements and Approachmentioning

confidence: 99%

“…Currently, one of the most common methods used to perform a comprehensive arc flash hazard analysis is IEEE standard 1584 -2004a, IEEE Guide for Performing Arc-Flash Hazard Calculations [6]. Commercially available power system Table 130.7(C)(11) and *article 130.7(C) (5) analysis software packages often use IEEE 1584 to assess arc flash hazards.…”

Section: A Arc Flash Hazard Analysis Requirements and Approachmentioning

confidence: 99%

“…The term "flash protection boundary" will be changed to "arc flash protection boundary" in the 2009 edition of NFPA 70E. This change is included in proposal 70E-39 in the NFPA 70E Report on Proposals at www.nfpa.org 5. The arc-rating of clothing may designate Breakopen Threshold Energy (EBT) instead of ATPV.…”

mentioning

confidence: 99%

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Understanding and Quantifying Arc Flash Hazards in the Mining Industry

Homce

Cawley

2007

2007 IEEE Industry Applications Annual Meeting

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Arc flash generally refers to the dangerous exposure to thermal energy released by an arcing fault on an electrical power system, and in recent years, arc flash hazards have become a prominent safety issue in many industries. This problem however, has not been effectively addressed in the mining industry. MSHA data for the period 1990 through 2001 attributes 836 injuries to "non-contact electric arc burns", making it the most common cause of electrical injury in mining. This paper presents results from several elements of a recent NIOSH study of arc flash hazards in mining, and provides information and recommendations that can help reduce these injuries. Characteristics of past arc flash injuries in mining are first outlined, such as the electrical components and work activities involved (based on MSHA data). This is followed by a review of important concepts and terminology needed to understand this hazard.Next, methods for identifying, measuring, and managing arc flash hazards on a power system are covered, with emphasis on recommendations found in NFPA 70E, Standard for Electrical Safety in the Workplace. Finally, results are presented from a detailed arc flash hazard analysis performed on a sample mine electrical power system using IEEE 1584-2004a, focusing on components and locations presenting severe hazards as well as engineering solutions for reducing the risk to personnel.Index terms -electrical arcing, electrical burns, mining, arc flash hazard analysis

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Section: A Arc Flash Hazard Analysis Requirements and Approachmentioning

confidence: 99%

Section: A Arc Flash Hazard Analysis Requirements and Approachmentioning

confidence: 99%

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Understanding and Quantifying Arc Flash Hazards in the Mining Industry

Homce

Cawley

2007

2007 IEEE Industry Applications Annual Meeting

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“…Although overall complication rates in electrical injuries are relatively low compared to flame burns, some of the most devastating complications seen after burn injury can occur in this group, such as pneumonia, sepsis, and wound infection [2]. Thereby, to protect the worker against this hazard, personal protective equipment (PPE) is required [5].…”

Section: Introductionmentioning

confidence: 99%

IEEE 13-Node Incident Energy Analysis Using Online Platform

Camponogara¹,

Marchesan²,

Bernardon³

et al. 2021

Proceedings of the 13th Seminar on Power Electronics and Control (SEPOC 2021)

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The thermal hazard is considered the most significant hazard from an arc flash event. The protection against this type of hazard is associated with the assessment of incident energy, a study that aims to analyze the possibility of occurrence of an electric arc, the incident energy produced by it and the necessary protections so that the work in electricity is safe. An incident energy analysis is performed to the 634 bus of IEEE 13 Node system using the ATP Draw software to simulate a three-phase shot-circuit and an online platform that runs the IEEE Std 1584-2018 model is employed to obtain the incident energy levels and arc-flash boundary values for different durations of arcing event. As a closing, the personal protective equipment required for the different time scenarios are analyzed, according to the two approaches proposed in NFPA 70E-2021.

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“…However, the Fuse 2 curve is steep, providing long clearing times at all but the highest fault currents. An example of changing a slow fuse for a fast fuse can also be found in [6].…”

Section: B Correcting a Coordination Problem Without Introducing An mentioning

confidence: 99%

Arc Flash and Coordination Study Conflict in an Older Industrial Plant

Sutherland¹

2007

2007 IEEE Industry Applications Annual Meeting

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Once arc flash hazard analysis became a requirement for many industrial power system studies, the reduction of arc flash hazards has become an important concern. Inevitably, the factors that lead to reductions in arc flash hazards do not always lead to an improvement in other areas, in particular, protective device coordination. This paper will examine several particular cases where an arc flash hazard analysis of an older industrial plant yielded several cases of buses where the hazard level was "Extreme Danger" above Category 4. By changing protective device settings and, if necessary, the devices themselves, the hazard level can be reduced. Methods to maintain coordination, if possible, are discussed.

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A summary of arc-flash energy calculations

Cited by 32 publications

References 5 publications

Understanding and Quantifying Arc Flash Hazards in the Mining Industry

Understanding and Quantifying Arc Flash Hazards in the Mining Industry

IEEE 13-Node Incident Energy Analysis Using Online Platform

Arc Flash and Coordination Study Conflict in an Older Industrial Plant

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