Annex - Guidelines for Application of MARPOL Annex I Requirements to FPSOs And FSUs
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Statutory Documents - IMO Publications and Documents - Circulars - Marine Environment Protection Committee - MEPC/Circular.406 – Guidelines for Application of MARPOL Annex I Requirements to FPSOs and FSUs – (10 November 2003)1 - Annex - Guidelines for Application of MARPOL Annex I Requirements to FPSOs And FSUs

Annex - Guidelines for Application of MARPOL Annex I Requirements to FPSOs And FSUs

  1 The purpose of these Guidelines is to provide for uniform application of MARPOL Annex I to Floating Production, Storage and Offloading facilities (FPSOs) and Floating Storage Units (FSUs) that are used for the offshore production and storage or for offshore storage of produced oil.

  2 The Marine Environment Protection Committee, at its forty-ninth session (14 to 18 July 2003), noted the complex issues involved in applying the requirements of MARPOL Annex I to FPSOs and FSUs, whose arrangements, functions and operations fall under the over-riding control of coastal States.

  3 In addition, the Committee found that the role of FPSOs and FSUs in operation does not include transport of oil. Accordingly, FPSOs and FSUs are a form of floating platform and do not lie within the definition of oil tanker in MARPOL regulation I/1(4). They are therefore subject to the provisions of Annex I that relate to fixed and floating platforms, including regulation 21.

  4 The Committee noted that the environmental hazards associated with the quantities of produced oil stored on board operational FPSOs and FSUs are similar to some of the hazards related to oil tankers and that relevant requirements of MARPOL Annex I in relation to oil tankers could be adapted to address those hazards in an appropriate manner. Based on the above and recognizing that these floating platforms are stationary when operating, the Committee recommends that coastal States, flag States and others associated with the design, construction and operation of FPSOs and FSUs apply the relevant MARPOL Annex I regulations referred to in annex 1 to the Guidelines. References contained in annex 1 relate to MARPOL Annex I up to and including the amendments contained in resolution MEPC.95(46).

  5 This circular has been prepared with a view to providing the necessary guidance and interpretation information which may be specifically applicable to FPSOs and FSUs, and accordingly represents a single document describing the application of MARPOL Annex I to these floating platforms.

  6 The provisions of this circular are for application to FPSOs and FSUs when located at their operating station. However they also take into account the abnormal and rare circumstances of:

  • .1 voyages for drydocking, repair or maintenance work; or

  • .2 disconnection of the platform in extreme environmental or emergency conditions.

In either case, the FPSO/FSU should not transport oil to a port or terminal except with the specific agreement of the flag and relevant coastal States, obtained on a voyage basis. When undertaking any voyage away from the operating station, for whatever purpose, FPSOs and FSUs will be required to comply with the discharge provisions of MARPOL Annex I for oil tankers.

  7 In order to avoid development of an entire new text from MARPOL Annex I attending to such terminology matters and notwithstanding the basis for these Guidelines outlined above, in any regulation indicated to apply to FPSOs and FSUs by the Guidelines at annex, the following interpretation of terminology should be used:

  • .1 “oil tanker” should be read as “FPSO or FSU”;

  • .2 “carry” should be read as “hold”;

  • .3 “cargo” should be read as “produced oil and oily mixtures”; and

  • .4 “voyage” should be read to include “operations”.

  8 Oil tanker requirements that are extended by the Guidelines to apply to FPSOs/FSUs are identified through the phrase “recommend application” or similar, while “applies” is used for requirements to be implemented irrespective of the contents of this circular.

  9 The requirement for oil tankers to undergo the enhanced survey programme (resolution A.744(18)) was deleted from regulation I/13G of MARPOL by resolution MEPC.95(46) and its provisions have subsequently been solely given effect through Chapter XI-I of SOLAS. Since SOLAS does not apply to the vast majority of FPSOs and FSUs, which are permanently moored at their operating stations, the relevant oil tanker requirements of resolution A.744(18) have been included as one of the provisions of the Guidelines in order to ensure a satisfactory standard of structural integrity for FPSOs and FSUs. Reflecting the operational characteristics of FPSOs and FSUs, the Guidelines also make provision for limited departure from A.744(18) in respect of acceptance of in-water surveys under conditions which do not compromise safety and pollution prevention.

  10 It is recommended that contracting Governments give effect to the provisions of this Circular to FPSOs and FSUs as soon as practicable, but not later than two years after date of approval of this circular for construction or conversion contracts placed on or after that date. In the absence of a building or conversion contract, the keel laying date for purpose-built new-construction FPSOs and FSUs or the commencement date of a ship's conversion should be used. FPSOs and FSUs contracted, built or converted prior to that date need not be upgraded in accordance with the provisions of the circular.

  11 In implementing the provisions of this circular, Member Governments are invited to use and recognize the Record of Construction and Equipment for FPSOs and FSUs at annex 2 in place of Forms A and B appended to Annex I of the Convention.

  12 The Committee noted that most operations of FPSOs and FSUs are different from other ships covered by Annex I and, recognizing that the coastal State has jurisdiction over fixed and floating platforms operating in waters under its jurisdiction, Member Governments may find it necessary to depart from the provisions of this Circular. Accordingly, the Committee invites Member Governments to advise the Organization of their experience in applying this Circular so that it can be taken into account if future amendments to this Circular are deemed necessary.


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