"INTRODUCTION This data sheet is designed to serve as a guide to safe practices in the repairs to crude oil@ liquefied petroleum gas (LP-gas)@ and products pipelines. The data presented herein represent a consensus on a desirable approach to such repair jobs; however@ this data sheet should not be regarded as an?? industry standard. Users of this data sheet are specifically directed to applicable Occupational Safety and Health Administration standards and Department of Transportation regulations. This data sheet was prepared by the Transportation Safety Committee and was approved for publication by the Committee on Safety and Fire Protection. PURPOSE AND SCOPE This data sheet is intended as a guide to safe working practices in the repairs to crude oil@ LP-gas@ and products pipelines . Although it is recognized that an ""on-the-job"" approach is tailored by the conditions of a particular job@ the observance of the suggestions herein should improve the ability to complete a repair without accident or injury."