scope:

This Standard specifies abrasive blast-cleaning methods for the surface preparation of steel products before the application of paints or related products for the purpose of rust and corrosion prevention, and also specifies the basic matters relating to blastcleaning abrasive to be used, and the test and assessment methods of the surface to be treated.

NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 8504-1: 2000 Preparation of steel substrates before application of paints and related products-Surface preparation methods-Part 1: General principles

ISO 8504-2: 2000 Preparation of steel substrates before application of paints and related products-Surface preparation methods-Part 2: Abrasive blast-cleaning (Overall evaluation: MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.

WARNING

The machinery and substance used in abrasive blast-cleaning may be injurious to health of workers if inadequate precautions are taken. In case of occurrence of any safety-related problems on workers during the abrasive blast-cleaning, especially concerning the air-blasting equipment with which the worker executes the abrasive blast-cleanning directly, any measures such as a safety device which automatically stops the equipment independently of the worker's intention are required to be taken. Attention is fully drawn to the daily checking of the body of pressure vessel, connecting joints, connecting hoses, connecting nozzles and regulating valves for flow rate of blast-cleaning abrasive, as well as their storage place in the case where they are not used for a long period of time. Attention is also drawn to the dusts, scrapings and water contaminated with them generated by the abrasive blast-cleaning work for the safety and health of workers and the pollution of peripheral environment. According to the above, appropriate preparation and control are necessary in the execution of the blast-cleaning.