1.1 This standard (Part I) covers the preparatory work which shall be accomplished and the inspection and tests which shall be carried out to ensure that a petroleum storage tank has been properly gas-freed and is safe for opening, entry and carrying out necessary cleaning and other repair work. This standard also covers the methods and procedures for cleaning dismantling and disposal of discarded tanks.
1.1.1 This standard emphasises the necessity for thorough removal of harmful liquids, sediments and deposits and for freeing the tanks of flamma ble and inflammable toxic gases and preventing their re-entry in the tanks.
1.1.2 Only atmospheric storage tanks are considered in this standard.
IS 9964 Pt.1-1981 history
1982IS 9964 Pt.1-1981 Recommendations for maintenance and operation of petroleum storage tanks Part I Preparation for safe tank entry and work