DNVGL-OS-E101 Drilling facilities

1 The electronic pdf version of this document, available free of chargefrom , is the officially binding GL ASOFFSHORE STANDARDSDNVGL-OS-E101 Edition January 2018 Drilling facilitiesFOREWORDDNV GL offshore standards contain technical requirements, principles and acceptance criteriarelated to classification of offshore units. DNV GL AS January 2018 Any comments may be sent by e-mail to service document has been prepared based on available knowledge, technology and/or information at the time of issuance of thisdocument.

2 The use of this document by others than DNV GL is at the user's sole risk. DNV GL does not accept any liability or responsibilityfor loss or damages resulting from any use of this document. Changes - currentOffshore standards, DNVGL-OS-E101 . Edition January 2018 Page 3 Drilling facilitiesDNV GL ASCHANGES CURRENTThis document supersedes the July 2015 edition of in this document are highlighted in red colour. However, if the changes involve a whole chapter,section or sub-section, normally only the title will be in red January 2018, entering into force 1 July 2018 All parts of the standard has been revised, re-structured and updated.

3 Main changes are provided [2]Updated and new [3]Clarification on how normative references shall be applied, with updated reference listand alternative [4]Introduction of informative references, for guidance and [2]Introduction of barrier management as the governing safety philosophy. Realized in thestandard by a technical operative barrier and a technical safety [3] Drilling systems are divided into operative systems realizing operative barriers or safetysystems realizing safety barriers.

4 Performance requirements are provided to operativeand safety systems. For operative systems, performance requirements depend onwhether a function is categorised as essential, important or [2]New subsection addressing general hazardous subsections includes hazardous events and barrier functions for the specific drillingsystems/ equipment . Barrier functions are categorised and accompanying performancerequirements are provided. Applicability of requirements is clarified by the separation ofoperative barrier requirements from safety barrier requirements, as these barriers arerequired to be and general update of material requirements.

5 Clarifying materialrequirements to various [4]New subsection for high-pressure high-temperature (HPHT) and general update of piping [ ]New subsection for glass-reinforced plastic (GRP) including relevant parts from and in July in July 2015-edition has been split into , and contains general requirements to Drilling systems. Requirements to specific drillingsystems are found in and section covering hoisting, rotating and handling systems (previously covered by in July 2015-edition).

6 [2]New requirements for capacity rating of the Drilling hoisting system. Brake requirementsare clarified. Changes - currentOffshore standards, DNVGL-OS-E101 . Edition January 2018 Page 4 Drilling facilitiesDNV GL [5]Clarified loads to be considered and factors to be included in calculations for section covering hoisting, rotating and handling systems (previously covered by in July 2015-edition). [1]New subsection on well barriers, including alternatives on how these may be [3] Drilling fluid circulation and cementing systems provide well influx prevention (WIP).

7 Requirements are updated and managed pressure Drilling (MPD) is included with updatedstructure and [4]Blowout preventer (BOP) systems provide well influx management (WIM) and well shut-in and disconnect (WSD). Requirements are updated and re-structured and alternativesfor how to arrange systems and functionality under WIM are provided. Requirementapplicability for WIM/WSD is clarified for each subsection, as are applicability for surfaceBOPs/subsea BOPs. Requirements to BOP test systems is [7]Clarifying general requirements to Drilling risers and specific requirements to surfacedrilling for manufacturing, workmanship and testing have been updated.

8 Therequired tests are listed in [3], while [4] specifies when a specific test shall be for flexibility within the testing regime is [3]Requirements to NDT procedure, extent and acceptance criteria is updated. Requirementsto function and failure testing is explicitly listed for [4]Required testing is divided into [ ] Testing before system/ equipment delivery and [ ]Onboard [ ]Scope for component/hardware tests and system tests to be performed before system/ equipment delivery is clarified. Procedure if scope will be transferred to Onboard testing [ ]Scope for commissioning and system integration tests to be performed onboard [ ]Requirements to when and how simulator-based testing shall be performed is are provided for simulator test setup, simulator framework, simulator accuracyand simulator [ ]Including documentation requirements for simulator-based to DNV GL attendance where FMEA is required by the standard.

9 Clarificationon attendance for design validation/verification [3]New subsection on voluntary section on documentation requirements for various certification requirements and final corrections Changes - currentOffshore standards, DNVGL-OS-E101 . Edition January 2018 Page 5 Drilling facilitiesDNV GL ASIn addition to the above stated changes, editorial corrections may have been made. ContentsOffshore standards, DNVGL-OS-E101 . Edition January 2018 Page 6 Drilling facilitiesDNV GL ASCONTENTSC hanges 1 9 Section 1 Definitions and 113 Normative Informative 24 Chapter 2 Technical 1 Design 271 Barrier 273 Drilling 28 Section 2 371 Materials and High-pressure high-temperature 3 Piping Piping Piping 4 Electrical, instrumentation, control and monitoring 541 Electrical 543 Instrumentation.

10 Control and monitoring 5 General requirements for Drilling Hazardous Arrangement and 584 Fire and 595 Design 606 Design 657 Emergency ContentsOffshore standards, DNVGL-OS-E101 . Edition January 2018 Page 7 Drilling facilitiesDNV GL AS8 equipment at 679 Hydraulic and pneumatic 68 Section 6 Hoisting, rotating and handling Drilling related Drilling hoisting and rotating Heave compensation and tensioning Handling Man-riding Other 7 Well pressure and flow control Bulk and mixing Well influx prevention - Drilling fluid circulation and cementing Well influx management and well shut-in and 1045 Well influx relief - diverter Well normalising - choke and kill Drilling riser Well test 8 Manufacturing.