BS EN ISO 19905-3:2019: Site-specific Assessment of Mobile Offshore Units - Floating Unit

Welcome to the comprehensive guide on the BS EN ISO 19905-3:2019 standard, a crucial document for professionals in the petroleum and natural gas industries. This standard provides detailed guidelines for the site-specific assessment of mobile offshore units, specifically focusing on floating units. Released on October 29, 2019, this standard is an essential resource for ensuring safety, efficiency, and compliance in offshore operations.

Overview of BS EN ISO 19905-3:2019

The BS EN ISO 19905-3:2019 standard is a part of a series of standards that address the assessment of mobile offshore units. This particular document focuses on floating units, which are a critical component in offshore drilling and production activities. The standard provides a framework for evaluating the suitability of these units for specific site conditions, ensuring that they can operate safely and effectively in various environmental and operational scenarios.

Key Features and Benefits

• Comprehensive Guidelines: The standard offers detailed procedures for assessing the structural integrity and operational capabilities of floating units, taking into account site-specific conditions such as water depth, wave and wind forces, and seabed characteristics.
• Enhanced Safety: By following the guidelines outlined in this standard, operators can significantly reduce the risk of accidents and equipment failure, ensuring the safety of personnel and the environment.
• Operational Efficiency: The standard helps operators optimize the performance of their floating units, leading to more efficient and cost-effective operations.
• Compliance and Certification: Adhering to the BS EN ISO 19905-3:2019 standard ensures compliance with international regulations and can facilitate the certification process for offshore units.

Technical Details

The BS EN ISO 19905-3:2019 standard is a 30-page document, identified by the ISBN 978 0 539 04105 7. It is recognized as a standard, meaning it has been thoroughly reviewed and approved by industry experts and regulatory bodies. The document provides a structured approach to assessing floating units, covering aspects such as:

• Environmental conditions and their impact on unit stability and performance.
• Structural analysis and design considerations for floating units.
• Operational guidelines for maintaining unit integrity under various conditions.
• Risk assessment and management strategies for offshore operations.

Why Choose BS EN ISO 19905-3:2019?

For professionals in the petroleum and natural gas industries, the BS EN ISO 19905-3:2019 standard is an invaluable tool. It not only provides a comprehensive framework for assessing floating units but also ensures that these assessments are conducted in line with the latest industry practices and technological advancements. By implementing the guidelines in this standard, operators can enhance the safety, reliability, and efficiency of their offshore operations.

Industry Applications

This standard is applicable to a wide range of offshore operations, including:

• Exploration and drilling activities.
• Production and processing of oil and gas.
• Transportation and storage of hydrocarbons.
• Decommissioning and abandonment of offshore units.

Conclusion

The BS EN ISO 19905-3:2019 standard is a critical resource for anyone involved in the design, operation, and management of mobile offshore units. Its comprehensive guidelines ensure that floating units are assessed and operated safely and efficiently, minimizing risks and maximizing performance. By adhering to this standard, operators can achieve compliance with international regulations, enhance operational safety, and improve the overall effectiveness of their offshore activities.

Invest in the BS EN ISO 19905-3:2019 standard today to ensure your offshore operations are conducted with the highest level of safety and efficiency. This standard is an essential addition to the library of any professional in the petroleum and natural gas industries, providing the knowledge and guidance needed to excel in the challenging offshore environment.

BS EN ISO 19905-3:2019

This standard BS EN ISO 19905-3:2019 Petroleum and natural gas industries. Site-specific assessment of mobile offshore units is classified in these ICS categories:

• 75.180.10 Exploratory, drilling and extraction equipment

This document specifies requirements and gives guidance for the site-specific assessment of mobile floating units for use in the petroleum and natural gas industries. It addresses the installed phase, at a specific site, of manned non-evacuated, manned evacuated and unmanned mobile floating units.

This document addresses mobile floating units that are monohull (e.g. ship-shaped vessels or barges); column-stabilized, commonly referred to as semi-submersibles; or other hull forms (e.g. cylindrical/conical shaped). It is not applicable to tension leg platforms. Stationkeeping can be provided by a mooring system, a thruster assisted mooring system, or dynamic positioning. The function of the unit can be broad, including drilling, floatel, tender assist, etc. In situations where hydrocarbons are being produced, there can be additional requirements.

The requirements of this document apply to the hull and stationkeeping system for all types of mobile units. The activity specific operating guideline document requirements can be modified to be appropriate to the situation being assessed.

This document does not address all site considerations, and certain specific locations can require additional assessment.

This document is applicable only to mobile floating units that are structurally sound and adequately maintained, which is normally demonstrated through holding a valid RCS classification certificate.

This document does not address design, transportation to and from site, or installation and removal from site.

This document sets out the requirements for site-specific assessments, but generally relies on other documents to supply the details of how the assessments are to be undertaken. In general:

• ISO 19901‑7 is referenced for the assessment of the stationkeeping system;

• ISO 19904‑1 is referenced to determine the metocean actions on the unit;

• ISO 19906 is referenced for arctic and cold regions;

• the hull structure and airgap are assessed by use of a comparison between the site-specific metocean conditions and its design conditions, as set out in the RCS approved operations manual;

• ISO 13624‑1 and ISO/TR 13624‑2^[1] are referenced for the assessment of the marine drilling riser of mobile floating drilling units. Equivalent alternative methodologies can be used;

• IMCA M 220^[5] is referenced for developing an activity specific operating guidelines. Agreed alternative methodologies can be used.

NOTE 1 The scope of ISO 19904‑1 specifically states that its requirements do not apply to mobile units, but the methodologies given for assessing metocean actions can be used.

NOTE 2 RCS rules and the IMO MODU code^[4] provide guidance for design and general operation of mobile floating units.