IS 1885 : Part 63 : 1985/IEC 50-391 : 1975/IEC Pub 50 (392) (1976) Electrotechnical vocabulary: Part 63 Nuclear instrumentation ( IEC Title : International Electrotechnical Vocabulary Chapter 391 : Detection and Measurement of Ionizing Radiation by Electrical Means Chapter 392 : Nuclear Instrumentation )

National Foreword

This Indian Standard (Part 63), which is identical with IEC Pub 50 `International Electrotechnical Vocabulary', Chapter 391 (1975 ) `Detection and measurement of ionizing radiation by electrical means', and Chapter 392 (1976) `Nuclear instrumentation' Supplement to Chapter 391, issued by the International Electrotechnical Commission, was adopted by the Indian Standards Institution on the recommendation of the Basic Standard on Electronics and Telecommunication Sectional Committee in consultation with the Nuclear Instrumentation Sectional Committee and on the approval of the Electronics and Telecommunication Division Council.

Wherever the words `International Standard' appear referring to this standard, it should be read as `Indian Standard'. Similarly reference to `IEV Chapter 391' should be read as a reference to chapter 391 of this standard.

In this `Indian Standard, the `ICRU Report 19' is referred to; the Sectional Committee responsible for the preparation of this standard has reviewed the provisions of this Report and has decided that they are acceptable for use in conjunction with this standard.

Only the English language text of the International Standards has been retained while adopting them as Indian standard.