Foreword This Guide has been prepared by ABS to provide Owners guidelines to establish minimum requirements for inspection of Rack and Pinion jacking gear at Special Periodical Survey of Hull for Self-Elevating Drilling Units. This Guide provides more details regarding the examination of open and closed type jacking systems of a Self-Elevating Drilling Units. The maintenance crew will benefit from understanding the general and design specific survey requirements for a Rack and Pinion jacking gear. This will enable better planning@ execution and consistent application of the scope of surveys and inspection during Special Surveys for jacking systems. This Guide becomes effective on the first day of the month of publication. Users are advised to check periodically on the ABS website www.eagle.org to verify that this version of this Guide is the most current. We welcome your feedback. Comments or suggestions can be sent electronically by email to 0Hrsd@eagle.org.