TECHNICAL PAPERS
Dec 1, 1994

Assessing Fitness for Purpose of Offshore Platforms. II: Risk Management, Maintenance, and Repair

This article is a reply.
VIEW THE ORIGINAL ARTICLE
Publication: Journal of Structural Engineering
Volume 120, Issue 12

Abstract

Existing structures, including offshore platforms, often do not meet the same standards as those mandated for new designs. It is also recognized by the engineering community that acceptance criteria for existing structures: (1) Should not necessarily be the same as those for new designs, and (2) should be dependent on the consequences of structural failure. Because of a large population of aging offshore platforms worldwide, reassessment of platforms to determine their fitness for purpose has gained considerable attention by the oil and gas industry and regulatory agencies in the United States and overseas. The reassessment process could be time‐consuming and costly because it requires many steps such as gathering information on design and physical condition of the platform, modeling of all important damage found, structural evaluation of the platform, calculation of reliability indices, and determination of mitigation and repair schemes. Therefore, a reassessment process covers a large span of technical topics and could require more effort and expertise compared to a new design.

Get full access to this article

View all available purchase options and get full access to this article.

References

1.
Banon, H., Bea, R. G., Bruen, F. J., Cornell, C. A., Krieger, W. F., and Stewart, D. A. (1994). “Assessing fitness for purpose of offshore platforms. I: analytical methods and inspections.” J. Struct. Engrg., ASCE, 120(12), 3595–3612.
2.
Bea, R. G. (1992). “Re‐Qualification of Offshore Platforms.” Proc., 5th Civ. Engrg. in the Oceans Conf., ASCE, College Station, Tex.
3.
Bea, R. G., Landeis, B. T., and Craig, M. J. K. (1992). “Re‐qualification of a platform in Cook Inlet, Alaska.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
4.
Crouse, C. B., and Quilter, J. M. (1991). “Seismic hazard analyses and development of spectra for Maui A platform.” Proc., Pacific Conf. on Earthquake Engrg., New Zealand National Society for Earthquake Engineering, Aukland, New Zealand, 3, 137–148.
5.
Dolan, D. K., Crouse, C. B., and Quilter, J. M. (1992). “Seismic reassessment of Maui A.” Proc., Offshore Technol Conf., Society of Petroleum Engineering, Richardson, Tex.
6.
Game, W. J., and English, K. G. (1990). “An external scheme for strengthening offshore platforms.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
7.
Hanna, S. Y., and Karsan, D. I. (1991). “Fatigue data for reliability‐based offshore platform inspection and repair.” J. Struct. Engrg., ASCE, 117(10), 3168–3185.
8.
Harwood, R. G., and Shuttleworth, E. P. (1988). “Grouted and mechanical strengthening and repair of tubular steel offshore structures.” Offshore Technology Report (OTH 88 283). United Kingdom Department of Energy, London, U.K.
9.
Hsu, T. M. (1994). “Strength of tubular members containing holes.” J. Offshore Mechanics and Arctic Engrg., ASME, 116(3), 154–162.
10.
Ibarra, S., et al. (1991). “The Structural repair of a North Sea platform using underwater wet welding techniques.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
11.
Ibarra, S., et al. (1990). “Underwater wet welding techniques for repair of higher‐carbon‐equivalent steels.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
12.
Iwan, W. D., Thiel, C. C., Housner, G. W., Cornell, C. A. (1992). “Seismic safety requalification of offshore platforms.” American Petroleum Institute, Washington, D.C.
13.
Lalani, M. (1990). “Background to the use of structural clamps in the strengthening of two Gulf of Mexico platforms.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
14.
Loh, J. T. (1991). “Grout filled undamaged and dented tubular steel members.” Exxon Production Research Company Report, Exxon Production Research Co., Houston, Tex.
15.
Marshall, P. W. (1992). “Screening old offshore platforms: previous approaches and further thoughts.” Proc. of Civil Engrg. in the Oceans V, ASCE, New York, N.Y.
16.
Martindale, S. G., et al. (1989). “Strength/risk assessment and repair optimization for aging, low‐consequence, offshore fixed platforms.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
17.
“Recommended practice for planning, designing and constructing fixed offshore platforms.” (1993a). API RP2A, 20th Ed., American Petroleum Institute, Washington, D.C.
18.
“Recommended practice for planning, designing and constructing fixed offshore platforms—load and resistance factor design.” (1993b). API RP2A‐LRFD. 1st Ed. American Petroleum Institute, Washington, D.C.
19.
Shinners, C. D., Edwardes, R. J., Lloyd, J. R., and Grill, J. M. (1988). “Structural upgading of original Bass Strait platforms.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
20.
Shuttleworth, F. P., and Billington, C. J. (1989). “A new approach to designing repair clamps for offshore structures.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
21.
Scelagowski, P. et al. (1990). “Developments in manual wet SAM‐ welding.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
22.
Tebbett, I. E., and Billington, C. J. (1985). “Recent developments in the design of grouted connections.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
23.
Tebbett, I. E., and Forsyth, P. (1987). “New data on the capacity of cement‐filled steel tubulars.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.
24.
Wood, B. J., Bruce, W. A., and Boyles, L. G. (1990). “Characteristics of an underwater wet repair weld made at −560 ft.” Proc., Offshore Technol. Conf., Society of Petroleum Engineering, Richardson, Tex.

Information & Authors

Information

Published In

Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 120Issue 12December 1994
Pages: 3613 - 3633

History

Received: Mar 10, 1993
Published online: Dec 1, 1994
Published in print: Dec 1994

Permissions

Request permissions for this article.

Authors

Affiliations

H. Banon, Member, ASCE
Sr. Specialist, Exxon Production Res. Co., P.O. Box 2189, Houston, TX 77252‐2189

Metrics & Citations

Metrics

Citations

Download citation

If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.

Cited by

View Options

Get Access

Access content

Please select your options to get access

Log in/Register Log in via your institution (Shibboleth)
ASCE Members: Please log in to see member pricing

Purchase

Save for later Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.

Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
ASCE Library Card (5 downloads)
$105.00
Add to cart
ASCE Library Card (20 downloads)
$280.00
Add to cart
Buy Single Article
$35.00
Add to cart

Get Access

Access content

Please select your options to get access

Log in/Register Log in via your institution (Shibboleth)
ASCE Members: Please log in to see member pricing

Purchase

Save for later Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.

Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
ASCE Library Card (5 downloads)
$105.00
Add to cart
ASCE Library Card (20 downloads)
$280.00
Add to cart
Buy Single Article
$35.00
Add to cart

Media

Figures

Other

Tables

Share

Share

Copy the content Link

Share with email

Email a colleague

Share