1. This notice provides information on:
2. Standards are being developed in the ISO 19900 series for the design and reassessment of offshore installations to give detailed guidance on the design, operating and environmental conditions and accidental loads that require to be considered for an offshore installation used to produce hydrocarbons.. ISO standards for oil and gas production are expected to have primacy in most regions of the world, including the UK Continental Shelf, for the design of new offshore installations and for modification to and reassessment of existing offshore structures. Table 1 below indicates the ISO standards that are being developed for most aspects of engineering, production and related topics, and the relevant technical committee, subcommittees and working groups involved
|Technical committee, subcommittees and offshore structures working groups|
|ISO/TC 067/EC/MC||Executive committee and management committee|
|TC 067/SC 02||Pipeline transportation systems|
|SC03||Drilling and completion fluids, and well cements|
|SC04||Drilling and production equipment|
|SC05||Casing, tubing and drill pipe|
|SC06||Processing equipment and systems|
|TC 067/WG 02||Conformity assessment|
|WG 04||Reliability engineering and technology|
|WG 05||Aluminium alloy pipes|
|WG 07||Corrosion resistant materials|
|WG 08||Materials, corrosion control, welding and jointing, and non-destructive examination (NDE)|
|WG 10||Liquefied natural gas (LNG) installations and equipment|
|WG 11||Coating and lining of structures and equipment|
|WG 12||CO2 aspects|
3. Table 2 below lists the ISO standards for offshore structures that have already been published and indicates those that are currently being prepared (*proposed year of publication).
|Specific requirements for offshore structures|
|ISO 19900: 2002||General requirements|
|ISO 19901-1:2005||Metocean design and operating considerations|
|ISO 19901-2:2004||Seismic design procedures and criteria|
|ISO 19901-3:2010||Topsides structures|
|ISO 19901-4:2003||Geotechnical and foundation design considerations|
|ISO 19901-5:2003||Weight control during engineering and construction|
|ISO 19901-6:2009||Marine operations|
|ISO 19901-7:2005||Station keeping systems for floating offshore structures and mobile offshore units|
|ISO 19902:2007||Fixed steel offshore structures|
|ISO 19903:2006||Fixed concrete offshore structures|
|ISO 19904-1:2006||Floating offshore structures - monohulls, semi-submersibles and spars|
|*ISO 19904-2:2013||Floating offshore structures - tension leg platforms|
|*ISO 19905-1:2013||Site specific assessment of mobile offshore units – Part 1: Jack-ups|
|*ISO 19905-2:2013||Site specific assessment of mobile offshore units – Part 2: Jack-ups: Commentary and detailed sample calculation|
|*ISO 19905-3:2015||Site specific assessment of mobile offshore units – Part 3: Floating units|
|*ISO 19906:2012||Arctic offshore structures|
4. This new standards apply to the various types of structure in use, both fixed and floating. As well as initial design and associated issues of fabrication, transportation, installation, hook-up and commissioning and operation offshore, the standards also apply to structural modifications and to eventual decommissioning, for which structural reassessments may be required.
5. The new ISO standards are being developed and maintained by experts from industry, government and academic institutions. Several standards have already been published, and the remainder are in the course of preparation. The codes are intended to be updated approximately every five years (or earlier if significant new information becomes available) and, in any case, no more than ten years after publication of the previous edition.
6. An Annex: Metocean Requirements for Western Europe is being prepared, along with similar Annexes for other regions, and Annexes applicable to different structural types. All parts of the code are intended to be published before the end of 2015. In the United Kingdom ISO codes are published by BSI (British Standards Institute Ltd), and prefixed BS EN ISO (19900, 19901, etc.).
7. An industry “early application” phase is underway with the new codes being tested on a number of current engineering projects in order to confirm their usefulness and suitability in practice of the new codes and to inform, where necessary, any revisions required for the next edition.
8. Other sources of technical guidance, codes and standards that might possibly be suitable include (but are not limited to):
The 4th Edition Guidance (as it came to be known) was first published by the then Department of Energy in 1974 to support the Offshore Installations (Construction and Survey) Regulations 1974 (SI 1974/289) to provide a consistent basis for the certification of offshore installations by then government-appointed certifying authorities. The guidance was regularly updated and three amendments were published in order to keep up with evolving technical knowledge, until the fourth and final edition was published in 1990. The amendments included:
10. Part I of the original guidance, comprising sections 1-8, referred to requirements that had been superseded. . Part II, the remaining sections, gave guidance on specific technologies setting out what was believed at the time to be good engineering practice. However, much of the information contained in the guidance become increasingly out of date. In one particular case, (friction between steel and neoprene in clamps) in section 60.5(h), the guidance was found to be unsafe. In 1998 HSE withdrew the 4th Edition Guidance from publication following the end of the previous certification regime, and the establishment of a regulatory regime of Independent Competent Persons (similar to that in use in other UK industries.
11. Certain sections of the 4th Edition Guidance were later republished as OTO Research Reports. Given the time that has elapsed since these reports were written, these documents can no longer be considered necessarily to represent current good practice.
12. Information in parts of the 4th Edition Guidance was updated and incorporated in the developing ISO codes where applicable. Other sections were used to inform other guidance, eg some parts of Section 55 Helicopter Landing Areas were included in CAP437 Offshore Helicopter Landing Areas – Guidance on Standards published by the Civil Aviation Authority (CAA) in the UK, and also in the International Civil Aviation Authority (ICAO) Heliport Manual. (Both these documents cross-refer to ISO 19901-3 for topsides structures.)
13. Information contained in the 4th Edition Guidance and associated HSE research reports should not be used without checking its validity against current standards. Duty holders are reminded that they are responsible for deciding if the information given in particular standards or guidance is suitable for their purposes.
This guidance is issued by the Health and Safety Executive. Following the guidance is not compulsory and you are free to take other action. But if you do follow the guidance you will normally be doing enough to comply with the law. Health and safety inspectors seek to secure compliance with the law and may refer to this guidance as illustrating good practice