IS 15666 : Part 1 : 2006 /ISO 3977-1 : 1997 Gas Turbines - Procurement - Part 1 : General Introduction and Definitions

National Foreword

This Indian Standard (Part 1) which is identical with ISO 3977-1:1997 ?Gas turbines - Procurement -Part 1 : General introduction and definitions? issued by the International Organization for Standardization(ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Rotating MachinerySectional Committee and approval of the Electrotechnical Division Council.

The text of the 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 should beread as ?Indian Standard?.

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

For the purpose of deciding whether a particular requirement of this standard is complied with, thefinal value, observed or calculated expressing the result of a test or analysis, shall be rounded off .inaccordance with IS 2 : 1960 ?Rules for roundin off numerical values (revised).The number of significantplaces retained in the rounded off value should be the same as that of the specified value in thisstandard.