IS 14149 : 2008 /ISO 3543 : 2000 Metallic and Non-Metallic Coatings - Measurement of Thickness - Beta Backscatter Method

National Foreword

This Indian Standard (First Revision) which is identical with ISO 3543 : 2000 ?Metallic and non-metalliccoatings - Measurement of thickness - Beta backscatter method? issued by theInternational Organization for Standardization (ISO) was adopted by the Bureau of Indian Standardson the recommendation of the Corrosion Protection and Finishes Sectional Committee and approval ofthe Metallurgical Engineering Division Council.

This standard was first published in 1994 based on ISO 3543 : 1981. Since ISO 3543 has been revisedin 2000, therefore, need was felt to revise IS 14149 also.

The text of ISO Standard has been approved as suitable for publication as an Indian Standardwithout deviations. Certain conventions are, however, not identical to those used in indian Standards.Attention is particularly drawn to the following:

a) Wherever the words ?International Standard? appear referring to this standard, they shouldbe read as ?Indian Standard?.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the currentpractice is to use a point (.) as the decimal marker.

Clause 1 of the standard refers to caution to be observed while using Beta backscatter instruments.

As the practice of Radiographic Testing involves hazardous materials, it is mandatory that the followingAtomic Energy Regulatory Board (AERB) guidelines are referred and complied with, to avoid statutoryviolations

a) SG/IN-1 Radiological safety in enclosed radiography installation, and

b) SG/IN-2 Radiological safety in open field radiography

Technical Corrigendum 1 to the above International Standard has been given at the end of thispublication.

In reporting the result of a test or analysis made in accordance with this standard, if the final value,observed or calculated, is to be rounded off, it shall be done in accordance with IS 2 : 1960 ?Rules forrounding off numerical values (revised)?.