Guidance on the declassification of tanks previously in leaded gasoline service

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  • Published: May 2010
  • REF/ISBN: 9780852935606
  • Edition: 2nd
  • Status: Current

This second edition of Guidance on the declassification of tanks previously in leaded gasoline service contains significant revisions, to ensure alignment with current regulations and good practice. It also includes a flow diagram which guides users through the declassification process.

The publication sets out a test protocol for evaluating exposure to lead resulting from previous contamination from organic lead gasoline additives. It sets out procedures for the declassification of gasoline storage tanks used in the refining and distribution sectors which were formerly in leaded gasoline service. The tests include a visual examination, analysis of samples of scale for organic and inorganic lead, and taking of air samples during worst-case simulated hot work carried out inside the storage tank on sections of the tank wall. If the test results are satisfactory, the tank may be 'declassified'.

There are considerable benefits in declassifying tanks: direct time and materials savings, greater comfort of operatives, improved work efficiency, and the simplification of operational work and training requirements. These benefits are also realised on each and every subsequent storage tank entry operation.

This publication will be useful for all those responsible for managing, cleaning, maintenance, inspection and testing of gasoline storage tanks.

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