Electrical hazards in the high energy laboratory

Gordon, L.B.

doi:10.1109/13.85081

Cited by 10 publications

(4 citation statements)

References 4 publications

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“…Obviously, such argument is relevant to organizing any new students' laboratory, and, on behalf of the pedagogical side, we have here an introduction to the generally important topic of electrical safety [3,[25][26][27], using the simple equivalent-circuit theorem.…”

Section: The Load Of Thementioning

confidence: 99%

Two Mathematical Comments on the Thevenin Theorem: An “Algebraic Ideal” and the “Affine Nonlinearity”

Gluskin¹

2015

Mathematical Problems in Engineering

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We discuss the most important and simple concept of basic circuit theory—the concept of the unideal source—or the Thevenin circuit. It is explained firstly how the Thevenin circuit can be interpreted in the algebraic sense. Then, we critically consider the common opinion that it is a linear circuit, showing that linearity (or nonlinearity) depends on the use of the port. The difference between the cases of a source being an input or an internal element (as it is in Thevenin’s circuit) is important here. The distinction in the definition of linear operator in algebra (here in system theory) and in geometry is also important for the subject, and we suggest the wide use of the concept of “affine nonlinearity.” This kind of nonlinearity should be relevant for the development of complicated circuitry (perhaps in a biological modeling context) with nonprescribed definition of subsystems, when the interpretation of a port as input or output can become dependent on the local intensity of a process.

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Section: The Load Of Thementioning

confidence: 99%

Two Mathematical Comments on the Thevenin Theorem: An “Algebraic Ideal” and the “Affine Nonlinearity”

Gluskin¹

2015

Mathematical Problems in Engineering

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“…Safe facilities follow common-sense safety practices whether these are in the form of regulations or not. An example of these principles is to perform a personal check of systems to verify that they are depowered before conducting maintenance work [11,12]. There are electrical safety regulations in each country but following the safety practice of verifying that any voltage line is de-energized is wise whether a rule exists or not.…”

Section: E)mentioning

confidence: 99%

Elements of successful and safe fusion experiment operations

Rule

Cadwallader

Takase

et al. 2009

2009 23rd IEEE/NPSS Symposium on Fusion Engineering

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-A group of fusion safety professionals contribute to a Joint Working Group (JWG) that performs occupational safety walkthroughs of US and Japanese fusion experiments on a routine basis to enhance the safety of visiting researchers. The most recent walkthrough was completed in Japan in March 2008 by the US Safety Monitor team. This paper gives the general conclusions on fusion facility personnel safety that can be drawn from the series of walkthroughs.

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“…Although the unique electrical hazards, such as dc, in industry and research laboratories were mentioned by Dalziel as early as 1951 [26,27] and later discussed by Gordon [28], they did not find a place in the national standards until article 350, "Safety-Related Work Requirements: Research and Development Laboratories" in the 2009 NFPA 70E [29]. Although this paper includes the arc flash hazards of facility ac power, the unique contributions are in other forms of electricity, as discussed below.…”

Section: Introductionmentioning

confidence: 99%

A complete electrical arc hazard classification system and its application

Gordon

Cartelli

Graham

2015

2015 IEEE IAS Electrical Safety Workshop

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The Standard for Electrical Safety in the Workplace, NFPA 70E, and relevant OSHA electrical safety standards evolved in the US, over the past 40 years, to address the hazards of 60-Hz power that are faced primarily by electricians, linemen, and others performing facility and utility work. This leaves a substantial gap in the management of other types of electrical hazards including battery banks, DC power systems, capacitor banks, and solar power systems. Although many of these systems are fed by 50/60-Hz alternating current (ac) energy, we find substantial use of direct current (dc) electrical energy, and the use of capacitors, inductors, batteries, solar, and radiofrequency (RF) power. The electrical hazards of these forms of electricity and their systems are different than for 50/60 Hz ac power.At this workshop in 2009 we presented a comprehensive approach to classifying the electrical shock hazards of all types of electricity, including various waveforms and various types of sources of electrical energy. That paper introduced a new comprehensive electrical shock hazard classification system that used a combination of voltage, shock current available, fault current available, power, energy, and waveform to classify all forms of electrical hazards with a focus on the shock hazard.

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Electrical hazards in the high energy laboratory

Cited by 10 publications

References 4 publications

Two Mathematical Comments on the Thevenin Theorem: An “Algebraic Ideal” and the “Affine Nonlinearity”

Two Mathematical Comments on the Thevenin Theorem: An “Algebraic Ideal” and the “Affine Nonlinearity”

Elements of successful and safe fusion experiment operations

A complete electrical arc hazard classification system and its application

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