Table of Contents

1 Scope
2 Normative References
3 Terms, Definitions, and Abbreviations
4 General Principles
5 Use and Maintenance
6 Inspection
7 Repair
8 Modification/Upgrade
9 Documentation and Records
10 Unidentified Equipment - Load Rating Determination
11 Foundation Requirements
12 Raising/Bridle Line Inspection and Replacement
13 Guying for Portable Masts with Guylines
14 Guywire Anchors for Portable Masts with Guylines
15 Foundations for Masts and Substructures
16 Low-temperature Operations
Annex A (informative) - Drilling Mast Visual Inspection
                        Form
Annex B (informative) - Well Servicing Masts Visual
                        Inspection Form
Annex C (informative) - Drilling Derrick Visual Inspection
                        Form
Annex D (informative) - Substructure Visual Inspection
                        Form
Bibliography

Abstract

Gives 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.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	American Petroleum Institute
Pages
ISBN
Supersedes	API 4G : 2004