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An Assessment of Techniques for Removing Offshore Structures (1996)
Commission on Engineering and Technical Systems (CETS)

Page
IX
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AN ASSESSMENT OF TECHNIQUES FOR REMOVING OFFSHORE STRUCTURES

Contents

Page
IX

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OCR for page R9
AN ASSESSMENT OF TECHNIQUES FOR REMOVING OFFSHORE STRUCTURES Contents     EXECUTIVE SUMMARY   1  1   OVERVIEW OF EXISTING OFFSHORE STRUCTURES AND REMOVAL REGULATIONS   5      Existing Platforms,   5      Construction Equipment Used in Platform Removals,   10      Regulations, Laws, and Permits,   11      References,   15  2   ASSESSMENT OF CUTTING TECHNIQUES   16      Explosive Cutting Techniques,   16      Nonexplosive Cutting Techniques,   19      Techniques Being Developed,   24      References,   29  3   TECHNICAL CONSIDERATIONS   30      Recent Removal Patterns,   30      Typical Abandonment Process,   30      Typical Platform Removal Costs,   39      References,   40  4   ENVIRONMENTAL ASSESSMENT OF PRESENT REMOVAL TECHNIQUES   42      Habitat and Ecosystems,   42      Nonlethal Effects of Explosive Removals,   47      Summary,   47      References,   47  5   SUMMARY ASSESSMENT OF EXPLOSIVE AND NONEXPLOSIVE TECHNOLOGIES   50      Findings,   50  6   CONCLUSIONS AND RECOMMENDATIONS   55      Conclusions,   55      Recommendations,   56     APPENDICES       A Biographical Sketches of Committee Members   61     B Federal Register Notice and List of Respondents   63     C Participants in Committee Meetings   67     D Regulations Governing Removal of Offshore Structures   69