1.1 In common with other engineering problems the choice between alternative corrosion control measures must consider economic factors as well as technical aspects.

1.2 The need has long existed for an overall, standard approach to aid in the selection between alternatives. Standardization, in the form of a recommended practice, will contribute significantly to a broader understanding of the different approaches possible within industry and to an effective exchange of ideas.

1.3 This standard is comprehensive in its consideration of the many factors involved, simplified for clarity and quick application by the working engineer, and mathematically expressed to facilitate calculation of unknown parameters.

1.4 The standard embodies accepted economic terminology in use at the accounting and managerial levels, so that a corrosion engineer's judgment can be properly expressed to and understood by  management. 

1.5 Standard methods herein presented are precise calculations within the parameters defined. Although individual company parameters may vary, differences should be minor and should permit application of these methods as useful tools of engineering and management decision making. 

Historical Document 1972