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API RP 4G

4th Edition, April 2012

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Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures

Includes all amendments and changes through Errata , September 2013


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Product Details:

  • Revision: 4th Edition, April 2012
  • Published Date: September 2013
  • Status: Historical
  • Document Language: English
  • Published By: American Petroleum Institute (API)
  • Page Count: 70
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Objective

This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain the serviceability of this equipment. The information in this document should be considered as supplemental to, and not as a substitute for, the manufacturer's instructions and the recommendations in API 54.

Structures Covered

Items of drilling and well servicing structures covered by this document include:

— masts/derricks and accessories;

— substructures and accessories.

NOTE 1 Crown block sheaves and bearings are covered under API 8B.

NOTE 2 Offshore masts, derricks, substructures and accessories are not under the scope of this document relative to 6.2.4, Category IV inspection requirements.