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Volume 129
Issue 2
IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews)
Volume 129, Issue 2, March 1982
Volumes & issues:
Volume 129, Issue 2
March 1982
Purpose and practice of radiation monitoring
- Author(s): T.F. Johns
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, p. 81 –105
- DOI: 10.1049/ip-a-1.1982.0012
- Type: Article
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Following a brief description of the biological effects of exposure to ionising radiation, and an explanation of the general philosophy of those engaged in the practice of radiation protection, a detailed account is given of the role which monitoring of various types plays in that practice. Two quite different types of monitoring are involved – for radiation from sources external to the body, and monitoring for radioactive materials which may get inside the body, or are already there. In each case this involves monitoring of the working environment, of the worker, and monitoring of the general environment to check for the effects of any deliberate or accidental releases of radioactive materials which might affect the general public. The special arrangements which may be needed following an accident or emergency are also briefly discussed.
Models of High-Energy Processes
- Author(s): R.J.N. Phillips
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, page: 105 –105
- DOI: 10.1049/ip-a-1.1982.0013
- Type: Article
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The Rare Earths in Modern Science and Technology—Vol. 2
- Author(s): E.P. Wholfarth
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, page: 105 –105
- DOI: 10.1049/ip-a-1.1982.0014
- Type: Article
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105
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Use of potentials in calculation of electromagnetic fields
- Author(s): P. Hammond
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, p. 106 –112
- DOI: 10.1049/ip-a-1.1982.0015
- Type: Article
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Electromagnetic fields are generally calculated with the help of auxiliary functions which are called potentials. These potentials can be defined in a variety of ways, some of which lead to economies in computational effort. The paper examines various possibilities in choosing the potentials, and discusses the advantages and disadvantages. Particular attention is paid to the second-order magnetic vector potential and also to the gauge transformations relating the potentials to each other.
Effect of impregnation, compression and temperature on electric strength of polythene and polypropylene
- Author(s): J.J. Fendley and N. Parkman
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, p. 113 –118
- DOI: 10.1049/ip-a-1.1982.0016
- Type: Article
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The effect of impregnation and compression on the electric strengths of polythene and polypropylene has been investigated. Measurements have been made over the temperature range −195 to + 20°C. Four impregnants were used: The dipolar liquids hexachiorodiphenyl, trichiorodiphenyl and dibutyl phthalate and nonpolar transformer oil. At room temperature, the impulse strengths of polythene and polypropylene are substantially increased by impregnation with certain of the dipolar liquids. Similar, although smaller, increases are found in the DC strength of polypropylene impregnated with any of the dipolar liquids. Transformer oil produces no improvements in the DC or impulse strengths of either of the two polymers. Using either of the chlorinated diphenyls as the impregnant, the DC strength of polythene is increased for all temperatures below the freezing points of the impregnants. Both the DC and impulse strengths are increased at liquid-air temperatures for polypropylene impregnated with trichlorodiphenyl. Compression improves the DC and impulse electric strengths of polythene. A mechanism of breakdown has been proposed, based on the presence of defects in the polymers. The defects initiate breakdown, and improvement in the electric strength results from their partial removal or filling by pressure or impregnation.
Stacking of high-voltage resistance dividers
- Author(s): J. Rungis and D.E. Brown
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, p. 119 –120
- DOI: 10.1049/ip-a-1.1982.0017
- Type: Article
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119
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Stacking of high-voltage resistance dividers, especially if the support columns are made from different materials, can lead to errors in the division ratio. An expression for the error introduced by leakage currents is presented and some values are given for a typical case.
Optical waveguides with impedance loaded walls
- Author(s): Antonello Cutolo
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, p. 121 –129
- DOI: 10.1049/ip-a-1.1982.0018
- Type: Article
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A multimode waveguide with impedance loaded walls is investigated. After analysing the most important ways for achieving a surface impedance in the optical range, an asymptotic expression of the radiated field is derived. In Section 6 of the paper the coefficients of the modes excited by a linear current, put outside the waveguide, are evaluated. Many numerical results for different surface impedances are reported.
Book review: IEE Conference Publication 189—Gas Discharges and their Applications
- Author(s): A.E. Guile
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, page: 129 –129
- DOI: 10.1049/ip-a-1.1982.0019
- Type: Article
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IEE West Wales Area: Chairman's address. Seeing what's happening
- Author(s): V.J. Phillips
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, page: 130 –130
- DOI: 10.1049/ip-a-1.1982.0020
- Type: Article
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Terotechnology. A modern approach to plant engineering
- Author(s): A. Kelly and K. Eastburn
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, p. 131 –136
- DOI: 10.1049/ip-a-1.1982.0021
- Type: Article
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Emphasis is put on the increasing importance of maintenance costs and availability levels to the profitability of an industrial organisation. This point was recognised by UK Government studies in the late 1960s, and terotechnology was defmed to describe the areas of management and engineering concerned with these factors. During the last decade the concept of terotechnology has drifted from a point of where maintenance and unavailability costs are of central importance to a general and less tangible subject area the relevance of which has not been accepted by industry. This paper considers the aims of terotechnology to be concerned with ‘the optimisation of the total maintenance and ownership costs over the equipment life- cycle’. With this in mind the principles of terotechnology are discussed and their applications described via an industrial case study.
Book review: Physics of Dielectrics for the Engineer
- Author(s): A.K. Jonscher
- Source: IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education, Reviews), Volume 129, Issue 2, page: 136 –136
- DOI: 10.1049/ip-a-1.1982.0022
- Type: Article
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