ICS 23.100.60                         PGD 36

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO/TR 10949 : 2002 ‘Hydraulic fluid power - Component cleanliness - Guidelines for achieving and controlling cleanliness of components from manufacturer to installation’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Fluid Power Systems Sectional Committee and approval of the Production and General Engineering Division Council.

This standard was first published in 2002. This revision has been harmonized to make pace with the latest developments that have taken place at international level.

In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. Contamination present in circulating working liquid may degrade system performance. One method of reducing the amount of these contaminants within the system is to manufacture, package, ship, store and install components in ways that achieve and control the desired component cleanliness level.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology and 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 be read as ‘Indian Standard’.

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