New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard which is identical with ISO 11665-8 : 2019 ‘Measurement of radioactivity in the environment - Air : radon-222 Part 8 : Methodologies for initial and additional investigations in buildings ’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Nuclear Energy for Peaceful Applications Sectional Committee and approval of the Chemical Division Council.

Under the general title ‘Measurement of radioactivity in the environment - Air : radon-222’ this Indian Standard is being published in several other parts. This part is an adoption ISO 11665-8 : 2019 which specifies requirements for the determination of the activity concentration of radon in all types of buildings. The buildings can be s ingle family houses, public buildings, industrial buildings, underground buildings, etc.