ABS 227-2016 GUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS.pdf

1、 Guide for Lay- up and Reactivation of Mobile Offshore Drilling Units GUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS MAY 2016 American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 Copyright 2016 American Bureau of Shipping ABS Plaza 16855 N

2、orthchase Drive Houston, TX 77060 USA Foreword Foreword This Guide has been prepared by the American Bureau of Shipping to provide Owners guidelines for the lay-up and reactivation of Mobile Offshore Drilling Units. These guidelines are of a general nature due to the wide variety of MODU configurati

3、ons, geographic and metocean conditions of lay-up sites and degree of maintenance during lay-up. This Guide expands the “Laid-up” status to provide more precise definitions regarding exact status of a stacked unit. This Guide provides the following five options for laid-up life cycle status for unit

4、s classed with ABS: i) Laid-up ii) Laid-up Warm Stacked iii) Laid-up Cold Stacked iv) Enhanced Laid-up Warm Stacked v) Enhanced Laid-up Cold Stacked These conditions will be noted in the units survey status and the Record. This Guide also introduces an “Enhanced” status for a laid up unit, which mea

5、ns that the unit has had its lay-up location and procedures reviewed and verified by ABS in accordance with this Guide. The goal of having a unit enrolled in Enhanced lay-up is to preserve the total asset value, potentially qualify for a reduced insurance premium while stacked, along with reducing t

6、he time and cost for reactivation. This Guide becomes effective on the first day of the month of publication. Users are advised to check periodically on the ABS website www.eagle.org to verify that this version of this Guide is the most current. We welcome your feedback. Comments or suggestions can

7、be sent electronically by email to rsdeagle.org. ii ABSGUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS .2016 Table of Contents GUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS CONTENTS SECTION 1 General 1 1 General . 1 3 Definitions . 1 3.1 Life Cycle Status “L

8、aid-up” 1 3.3 Life Cycle Status “Laid-up Warm Stacked” 1 3.5 Life Cycle Status “Laid-up Cold Stacked” 2 3.7 “Enhanced” Life Cycle Status 2 5 Lay-up Surveys . 2 7 Maintenance of Life Cycle Status . 2 9 Lay-up Overview . 3 SECTION 2 Lay-up and Surveys of Laid-up Mobile Offshore Drilling Units . 4 1 La

9、y-up Procedure Requirements 4 3 Preservation and Maintenance . 6 3.1 General 6 3.3 Hull and Deck Equipment 6 3.5 Machinery Spaces and Machinery 7 3.7 Boilers . 8 3.9 Boiler Stack Openings . 8 3.11 Electrical Installation 8 3.13 Elevating and Skidding Systems . 9 3.15 Control Systems 9 3.17 Drilling

10、Equipment . 10 3.19 Lay-up Site and Station Keeping (Mooring) Arrangements . 10 5 Surveys . 11 5.1 Initial Verification Survey . 11 5.3 Annual Surveys . 12 SECTION 3 Enhanced Lay-up . 13 1 Submittals . 13 1.1 Overall Lay-up Procedure Describing the Following 13 1.3 Risk Assessment . 13 1.5 Mooring .

11、 14 1.7 Manning . 14 ABSGUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS .2016 iii 1.9 Security 15 1.11 Stability 15 1.13 Services . 15 1.15 Port and Flag State Requirements . 15 1.17 Procedures and Standards for Preservation 15 1.19 Safety Manual 15 1.21 Maintenance Plan 15 1.23

12、Remote Monitoring Systems 16 1.25 Repair and Maintenance Log . 16 3 Surveys . 16 3.1 Initial Verification Survey . 16 3.3 Annual Surveys 16 SECTION 4 Reactivation of Laid-up Mobile Offshore Drilling Units 17 1 General . 17 3 Reactivation Procedures for vessels with “Enhanced” LCS . 18 5 Hull and Out

13、fit . 18 5.1 Underwater Examination . 18 5.3 Witnessing of Functional Testing or Verification of Fitness for Service . 18 7 Machinery 19 9 Elevating Systems and Cantilever Hold Downs 19 11 Electrical 20 13 Drilling Equipment . 20 15 Control Systems and Instrumentation . 20 15.1 Software 20 15.3 Hard

14、ware . 21 17 Cranes . 21 19 Propulsion Trials and Sea Trials . 21 21 Documentation and Certification . 21 iv ABSGUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS .2016 Section 1: General SECTION 1 General At the request of the owner and to assist in the maintenance of class, ABS wi

15、ll review, survey, and confirm by issuance of a factual Lay-up Report, the actions taken to preserve and protect a unit in lay-up. This Guide contains those precautions and procedures considered by ABS to accomplish this objective; alternative approaches to accomplish the same may be considered. 1 G

16、eneral i) Upon the owners written notification to ABS of a units lay-up, it will be noted in the units survey status and the Record will be updated to reflect the change in status. Surveys falling due during lay-up are then to be held in abeyance until the unit reactivates, at which time they are to

17、 be brought up to date. ii) The Reactivation Survey requirements for the unit are subject to special considerations based on the survey status at the time of the commencement of lay-up, the length of the lay-up period, and the conditions under which the unit has been maintained during that period. i

18、ii) Where initial lay-up preparations and procedures are reviewed and surveyed by ABS, and also verified annually by survey, consideration may be given to deducting part or all of the time in lay-up from the progression of survey intervals, or to modifying the requirements for up-dating surveys at t

19、ime of reactivation. iv) There are three conditions for a Unit with a Laid-up “Life Cycle State” (hereinafter LCS) in the Record, Laid-up; Laid-up Warm Stacked and Laid-up Cold Stacked. The life cycle states “Laid-up Warm Stacked” and “Laid-up Cold Stacked” can also have the Enhanced state, to be “E

20、nhanced Laid-up Warm Stacked” and “Enhanced Laid-up Cold Stacked”. These conditions are described in Subsection 1/3 below. 3 Definitions 3.1 Life Cycle Status “Laid-up” When a unit has a “Laid-up” LCS in the Record this means that the unit is out of service for an undetermined length of time. The ow

21、ners have informed ABS that the unit is laid up, but no procedures for lay-up have been reviewed by ABS. While in laid up status, class surveys are held in abeyance and statutory surveys are maintained when required by the flag Administration. Prior to returning to service a Reactivation Survey in a

22、ccordance with Section 4 of this Guide, including all due and overdue class and statutory surveys is to be carried out. An initial layup verification survey and annual surveys are not required for this LCS. 3.3 Life Cycle Status “Laid-up Warm Stacked” When a unit has a “Laid-up Warm Stacked” LCS in

23、the Record, this means the unit is not in operation, is positioned in a sheltered location and there is a crew onboard carrying out the maintenance and preservation activities described in the ABS agreed lay-up procedure. In this case, 1/1iii) is applicable. Class surveys are held in abeyance and st

24、atutory surveys are maintained when required by the flag Administration. However, annual lay-up surveys are required to be carried out. Prior to returning to service, a reactivation survey taking into account the degree of maintenance conducted while laid-up, including all due and overdue statutory

25、surveys are to be carried out. ABSGUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS .2016 1 Section 1 General 3.5 Life Cycle Status “Laid-up Cold Stacked” When a unit has a “Laid-up Cold Stacked” LCS in the Record, this means that the unit is not operating, is positioned in a shelt

26、ered location, is unmanned, and that the Lay-up procedures have been reviewed by ABS. In this case, 1/1iii) is applicable. All class and statutory surveys are held in abeyance. However, annual lay-up surveys are required to be carried out. Prior to returning to service, a reactivation survey taking

27、into account the degree of maintenance conducted while laid-up, including all due and overdue statutory surveys, are to be carried out. 3.7 “Enhanced” Life Cycle Status The goal of having a unit enrolled in the Enhanced Lay-up program is to manage the lifecycle and asset value by minimizing risk exp

28、osure, along with reducing the time and cost for reactivation. In addition to the requirements of Laid-up Warm Stacked or Laid-up Cold Stacked, when a unit has an “Enhanced Lay-up” LCS in the Record, this means that the unit has had its lay-up location and procedures reviewed and verified in accorda

29、nce with Section 2 of this Guide. For this LCS, a review of the proposed lay-up procedure, including the location chosen, the moorings, a risk analysis of the location, and the capability of emergency response is required. The Life Cycle Status will show in the Record as follows: Enhanced Laid-up Co

30、ld Stacked Enhanced Laid-up Warm Stacked 5 Lay-up Surveys When a unit is laid-up with a “Laid-up Warm Stacked”, “Laid-up Cold Stacked”, or “Enhanced” LCS in the Record, an Initial Verification Survey is required. After being laid up, the unit will also be subjected to periodic surveys. The scope of

31、such surveys will consist of verification of all items on the ABS agreed lay-up procedure. In the case of “Cold Stacked” units, in addition to the verification detailed in Subsection 2/5 of this Guide, the equivalent to an Annual Hull Survey is to be carried out. In the case of “Warm Stacked” units,

32、 in addition to the verification listed in Subsection 2/5 of this Guide, the equivalent to an Annual Hull Survey and an Annual Machinery Survey is to be carried out. Vessels with “Enhanced Lay-up” will have verification requirements in accordance with Subsection 3/3 of this Guide in addition to thos

33、e in Subsection 2/5. 7 Maintenance of Life Cycle Status When the vessel has a Life Cycle Status of “Laid-up Warm Stacked”, “Laid-up Cold Stacked”, or “Enhanced”, the Life Cycle Status will be changed to “Laid-up”, and the vessel will not be eligible for deduction of any time in lay-up from the surve

34、y cycle in any of the following circumstances: i) If the periodical surveys required for maintenance of the Life Cycle Status are not carried out by their due dates and no extension has been granted ii) If recommendations issued by the Surveyor regarding degree of compliance with the lay-up procedur

35、e are not carried out by their due dates and no extension has been granted iii) If any damage, failure, or repair has not been completed as recommended 2 ABSGUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS .2016 Section 1 General 9 Lay-up Overview Life Cycle Status Laid-up Laid-up

36、 Cold Stacked Laid-up Warm Stacked Enhanced Laid-up Cold Stacked Enhanced Laid-up Warm Stacked Owner sends notification to ABS X X X X X Lay-up Procedure Reviewed X X X X Engineering Review of Mooring design X X Survey of Mooring X X Initial Verification Survey X X X X Annual Hull Survey equivalent

37、X X X X Annual Machinery Survey Equivalent X X Underwater Examination of mooring system every 3 years X X Surveys held in abeyance X X X X X Deduction of time in lay-up X X X X Reactivation Survey X X X X X Reactivation Survey considers Lay-up Procedure X X X X Reactivation follows submitted Reactiv

38、ation Procedure X X ABSGUIDE FOR LAY-UP AND REACTIVATION OF MOBILE OFFSHORE DRILLING UNITS .2016 3 Section 2: Lay- up and Surveys of Laid- up Mobile Offshore Drilling Units SECTION 2 Lay-up and Surveys of Laid-up Mobile Offshore Drilling Units This Section applies to vessels requesting a life cycle

39、status of Laid-up Warm Stacked, Laid-up Cold Stacked, and vessels with the Enhanced life cycle status. 1 Lay-up Procedure Requirements i) On units with “Laid-up Warm Stacked” LCS in the Record, there are to be a sufficient number of qualified personnel available onboard in order to maintain full-tim

40、e fire, leakage, moorings and security watch of the unit as required by the flag Administration. The watchmen are to be capable of operating the emergency communications equipment and taking emergency action pending arrival of outside assistance for fire extinguishing, leakage pumping, mooring adjus

41、tment or release, and general security. This includes the operation of the necessary emergency power sources, pumping units and any active fixed fire control apparatus. ii) On units with “Laid-up Cold Stacked” LCS in the Record, there is to be an alarm system fitted for fire, bilge flooding, loss of

42、 power, loss of station, and any other items deemed appropriate. The alarm is to be visible remotely or have the capability to notify personnel by other means, such as internet or telephone. Personnel are to be available to take action in the case the alarm is activated. The availability of competen

43、t and trained personnel for taking emergency action in hurricane, cyclone, or typhoon areas is to be considered. iii) All the units fire safety equipment including emergency fire pump are to be proved in good order immediately prior to lay-up and maintained ready for immediate use thereafter. iv) Th

44、e units fire extinguishing piping is to be proven in good condition. If the piping is drained, drains are to be kept only sufficiently open to allow drainage of condensate. Alternatively, the fire main lines may be filled with inhibited fresh water, including anti-freeze if necessary, or left in ser

45、vice. The International Shore connection, where provided, is to be loosely installed and its location prominently marked. Fire line valve stems are to be freed up and lubricated. v) Self-Contained breathing apparatus and flotation escape equipment are to be provided and maintained immediately availa

46、ble for the watchmen or lay-up crews. vi) All ventilators and air intake or exhaust openings are to be adequately covered. Supply and exhaust openings for necessary emergency diesel generator or fire pump engines are to be arranged for immediate or automatic opening. All fire dampers are to be freed

47、-up and then secured in closed position. All fire division doors are to be closed and appropriate signs to be posted or painted on the doors to confirm the doors are kept closed during the lay-up period. If the doors are to be kept open for ease of dehumidification, a risk assessment is to be submit

48、ted, considering factors mitigating fire risk. vii) Effective and reliable means of communication, such as an independently-powered radiotelephone, are to be provided for contact with firefighting, tug and rescue facilities, or central security base. A secondary communication system is to be provide

49、d in the event of failure or damage to the primary means. viii) A source of power for providing emergency lighting, fire extinguishing water, and bilge pumping throughout the unit is to be immediately available. Where the emergency source of power is a portable diesel generator set mounted on deck, adequate arrangements are to be made to install and secure the equipment, including fire safety of the fuel and exhaust systems, fire extinguishing arrangements, weather protection, proper electrical installation, and electrical protective devices for the unit. 4 ABSGUIDE FOR LAY-UP AND