FOREWORD

API publications necessarily address problems of a general nature, with respect to particular circumstances. Local, State, and Federal laws and Regulations should be reviewed.

API is not undertaking to meet the duties of employers, manufacturers, or suppliers to warn and properly train and equip their employees, and others exposed, concerning health and safety risks and precautions, nor undertaking their obligations under Local, State, or Federal laws.

Information concerning safety and health risks and proper precautions with respect to particular materials and conditions should be obtained from the employer, the manufacturer, or supplier of that material, or the material safety data sheet.

Nothing contained in any API publication is to be construed as granting any right, by implicatiion or otherwise, for the manufacture, sale, or use of any method, apparatus, or product covered by letters patent. Neither should anything contained in the publication be construed as insuring anyone against liability for infringement of letters patent.

API has attempted to ensure that the following study has been conducted in a manner that is scientifically accurate. API makes no recommendations regarding the course of conduct to be followed by readers of this study. The reader is in no way bound to the findings of this study. The reader should exercise independent judgment in interpreting and applying data provided in this study.