BS EN ISO 19901-2:2022 - Petroleum and Natural Gas Industries: Specific Requirements for Offshore Structures Seismic Design Procedures and Criteria

Standard Number: BS EN ISO 19901-2:2022

Pages: 64

Released: 2022-08-19

ISBN: 978 0 539 03955 9

Status: Standard

Overview

The BS EN ISO 19901-2:2022 standard is an essential document for professionals in the petroleum and natural gas industries, particularly those involved in the design and construction of offshore structures. This comprehensive standard provides specific requirements for seismic design procedures and criteria, ensuring that offshore structures are designed to withstand seismic events effectively.

Key Features

• Comprehensive Guidelines: The standard offers detailed guidelines on seismic design procedures, ensuring that all aspects of seismic activity are considered in the design of offshore structures.
• Industry-Specific Requirements: Tailored specifically for the petroleum and natural gas industries, this standard addresses the unique challenges and requirements of offshore structures in these sectors.
• Up-to-Date Information: Released on August 19, 2022, this standard incorporates the latest research and technological advancements in seismic design.
• Internationally Recognized: As part of the ISO (International Organization for Standardization) series, this standard is recognized and respected globally, ensuring compliance with international best practices.

Why This Standard is Essential

Offshore structures in the petroleum and natural gas industries are exposed to a variety of environmental and operational challenges, including seismic activity. The BS EN ISO 19901-2:2022 standard is crucial for ensuring the safety and integrity of these structures. By adhering to the guidelines and criteria outlined in this standard, engineers and designers can:

• Enhance Safety: Implementing robust seismic design procedures helps protect both the structure and its occupants during seismic events.
• Ensure Compliance: Meeting the requirements of this internationally recognized standard ensures compliance with regulatory and industry standards.
• Optimize Design: The standard provides a framework for optimizing the design of offshore structures, balancing safety, functionality, and cost-effectiveness.
• Mitigate Risks: By addressing potential seismic risks in the design phase, the standard helps mitigate the impact of seismic events on offshore operations.

Detailed Content

The BS EN ISO 19901-2:2022 standard spans 64 pages and covers a wide range of topics related to seismic design for offshore structures. Key sections include:

• Introduction: An overview of the scope and objectives of the standard.
• Seismic Hazard Assessment: Guidelines for assessing seismic hazards and their potential impact on offshore structures.
• Design Criteria: Specific criteria for the seismic design of offshore structures, including load and resistance factors.
• Analysis Procedures: Detailed procedures for analyzing the seismic response of offshore structures.
• Design Verification: Methods for verifying the seismic design to ensure compliance with the standard.
• Case Studies: Examples and case studies illustrating the application of the standard in real-world scenarios.

Who Should Use This Standard?

The BS EN ISO 19901-2:2022 standard is designed for a wide range of professionals in the petroleum and natural gas industries, including:

• Structural Engineers: Engineers responsible for the design and analysis of offshore structures.
• Project Managers: Managers overseeing offshore construction projects who need to ensure compliance with seismic design standards.
• Regulatory Authorities: Officials responsible for enforcing safety and design standards in the petroleum and natural gas industries.
• Consultants: Industry consultants providing expert advice on seismic design and offshore structures.

Conclusion

The BS EN ISO 19901-2:2022 standard is an invaluable resource for ensuring the safety, integrity, and compliance of offshore structures in the petroleum and natural gas industries. By providing comprehensive guidelines and criteria for seismic design, this standard helps professionals navigate the complexities of seismic activity and its impact on offshore operations. Stay ahead in your field by incorporating the latest best practices and standards into your seismic design procedures.

BS EN ISO 19901-2:2022

This standard BS EN ISO 19901-2:2022 Petroleum and natural gas industries. Specific requirements for offshore structures is classified in these ICS categories:

• 75.180.10 Exploratory, drilling and extraction equipment

This document contains requirements for defining the seismic design procedures and criteria for offshore structures; guidance on the requirements is included in Annex A. The requirements focus on fixed steel offshore structures and fixed concrete offshore structures. The effects of seismic events on floating structures and partially buoyant structures are briefly discussed. The site-specific assessment of jack-ups in elevated condition is only covered in this document to the extent that the requirements are applicable. Only earthquake-induced ground motions are addressed in detail. Other geologically induced hazards such as liquefaction, slope instability, faults, tsunamis, mud volcanoes and shock waves are mentioned and briefly discussed. The requirements are intended to reduce risks to persons, the environment, and assets to the lowest levels that are reasonably practicable. This intent is achieved by using: a) seismic design procedures which are dependent on the exposure level of the offshore structure and the expected intensity of seismic events; b) a two-level seismic design check in which the structure is designed to the ultimate limit state (ULS) for strength and stiffness and then checked to abnormal environmental events or the abnormal limit state (ALS) to ensure that it meets reserve strength and energy dissipation requirements. Procedures and requirements for a site-specific probabilistic seismic hazard analysis (PSHA) are addressed for offshore structures in high seismic areas and/or with high exposure levels. However, a thorough explanation of PSHA procedures is not included. Where a simplified design approach is allowed, worldwide offshore maps, which are included in Annex B, show the intensity of ground shaking corresponding to a return period of 1 000 years. In such cases, these maps can be used with corresponding scale factors to determine appropriate seismic actions for the design of a structure, unless more detailed information is available from local code or site-specific study. NOTE      For design of fixed steel offshore structures, further specific requirements and recommended values of design parameters (e.g. partial action and resistance factors) are included in ISO 19902, while those for fixed concrete offshore structures are contained in ISO 19903. Seismic requirements for floating structures are contained in ISO 19904, for site-specific assessment of jack-ups and other MOUs in the ISO 19905 series, for arctic structures in ISO 19906 and for topsides structures in ISO 19901?3.