EN ISO 18647:2019

SLOVENSKI STANDARD
01-december-2019
Industrija za predelavo nafte in zemeljskega plina - Modularne vrtalne ploščadi za
priobalne pritrjene ploščadi (ISO 18647:2017)
Petroleum and natural gas industries - Modular drilling rigs for offshore fixed platforms
(ISO 18647:2017)
Industries du pétrole et du gaz naturel - Spécifications pour une foreuse modulaire à
bord de plateformes fixes offshore (ISO 18647:2017)
Ta slovenski standard je istoveten z: EN ISO 18647:2019
ICS:
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18647
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 75.180.10
English Version
Petroleum and natural gas industries - Modular drilling
rigs for offshore fixed platforms (ISO 18647:2017)
Industries du pétrole et du gaz naturel - Spécifications
pour une foreuse modulaire à bord de plateformes
fixes offshore (ISO 18647:2017)
This European Standard was approved by CEN on 9 September 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18647:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 18647:2017 has been prepared by Technical Committee ISO/TC 67 "Materials,
equipment and offshore structures for petroleum, petrochemical and natural gas industries” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 18647:2019 by
Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum,
petrochemical and natural gas industries” the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2020, and conflicting national standards shall be
withdrawn at the latest by April 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 18647:2017 has been approved by CEN as EN ISO 18647:2019 without any modification.

INTERNATIONAL ISO
STANDARD 18647
First edition
2017-08
Petroleum and natural gas
industries — Modular drilling rigs for
offshore fixed platforms
Industries du pétrole et du gaz naturel — Spécifications pour une
foreuse modulaire à bord de plateformes fixes offshore
Reference number
ISO 18647:2017(E)
©
ISO 2017
ISO 18647:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2017 – All rights reserved

ISO 18647:2017(E)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 4
5 Overall considerations . 6
5.1 General . 6
5.2 Functional equipment . 6
5.2.1 Hoisting system . 6
5.2.2 Rotary system . 6
5.2.3 Circulation and solids control systems . 6
5.2.4 Power and electrical systems . 6
5.2.5 Well control system . 7
5.2.6 BOP handling system . 7
5.2.7 Cementing system . 7
5.2.8 Pipe handling system . 7
5.2.9 Instrument communication system . 7
5.2.10 Auxiliary system . 7
5.3 Layout . 7
5.3.1 General. 7
5.3.2 Drilling equipment set . 8
5.3.3 Drilling support module . 8
5.3.4 Drilling utilities . 8
5.4 Health and safety considerations . 8
5.4.1 General. 8
5.4.2 Escape and alarms . 8
5.4.3 Hazardous areas and storage of hazardous goods . 9
5.4.4 Fire and explosion protection. 9
5.4.5 Safety equipment . 9
5.5 Operational considerations . 9
5.6 Corrosion control . 9
5.7 Structural considerations . 9
5.8 Removal and abandonment .10
6 Design .10
6.1 General .10
6.2 Rig rating .10
6.3 Drilling equipment set .11
6.3.1 General.11
6.3.2 Derrick/Mast .12
6.3.3 Maximum hook load .12
6.3.4 Drill floor clearance .12
6.3.5 Top drive system .12
6.3.6 Well control equipment .12
6.3.7 BOP handling system .12
6.3.8 Circulation and solids control system .13
6.4 Drilling support equipment .13
6.4.1 Power of the mud pump set .13
6.4.2 Mud tank volume .13
6.4.3 Generator set .13
6.4.4 Electrical equipment and cabling .14
6.4.5 Emergency power supply .14
ISO 18647:2017(E)
6.4.6 UPS .14
6.4.7 Fuel tank . .14
6.4.8 P-tanks and pipework.14
6.4.9 Auxiliary systems .15
6.4.10 Other requirements .15
6.5 Interfaces .16
6.5.1 Seawater .16
6.5.2 Fresh water .16
6.5.3 Fuel .16
6.5.4 Compressed air .16
6.5.5 Discharge system .16
6.5.6 Electrical interface.16
6.5.7 Instrument communication interface .16
6.5.8 Well control system interface .16
6.5.9 Safety system interface .17
6.5.10 Flowback system interface .17
7 Structural design .17
7.1 General .17
7.2 Structure simulation .17
7.3 Design checks .17
7.4 Material selection .17
7.5 Skid rail strength analysis .17
8 Construction and assembly .17
8.1 General .17
8.2 Planning .18
8.3 Equipment and materials handling .18
8.3.1 Arrival inspection of materials and equipment .18
8.3.2 Storage and tracking of materials and equipment.18
8.4 Structural steelwork fabrication .18
8.4.1 Cylindrical tubular members .18
8.4.2 Non-cylindrical sections .18
8.4.3 Skid rail fabrication .19
8.4.4 Tolerance for skid rail installation .19
8.5 Welding and inspection .19
8.5.1 Basic requirements .19
8.5.2 Visual inspection .20
8.5.3 Non-destructive inspection .20
8.5.4 Additional inspection requirement .21
8.6 Prefabrication and installation of the piping .21
8.7 Outfitting .21
8.7.1 Heat insulating materials .21
8.7.2 Penetrations .21
8.7.3 Fire doors .21
8.7.4 Installation of ladders and guardrails .22
8.8 Corrosion control .22
8.9 Installation of equipment .22
8.9.1 General.22
8.9.2 Hoisting equipment .22
8.9.3 Rotating equipment . .22
8.9.4 Circulation and solids control equipment .22
8.9.5 Power and electrical equipment .24
8.9.6 Well control equipment .24
8.9.7 Pipe handling equipment .24
8.9.8 Fire and gas detection equipment .24
8.9.9 Drilling instrument communication system .25
8.9.10 Boiler and steam system .25
8.10 Weighing .25
iv © ISO 2017 – All rights reserved

ISO 18647:2017(E)
9 Pre-commissioning .26
9.1 Pre-commissioning scope .26
9.2 Pre-commissioning preparation .26
9.3 Hoisting equipment .27
9.4 Rotating equipment .27
9.5 Circulation and solids control equipment .28
9.6 Power and electrical equipment .28
9.6.1 Diesel generator set.28
9.6.2 Transformer .28
9.6.3 Medium voltage switchboard, low voltage switchboard and motor
control centre .29
9.6.4 UPS .29
9.6.5 Electric control system equipment .29
9.7 BOP handling equipment .29
9.8 Cementing equipment .29
9.9 Pipe handling equipment .30
9.10 Fire and gas detection system equipment .30
9.11 Instrument .30
9.11.1 Drilling instrument .30
9.11.2 P-tank instrument .30
9.12 Hydraulic system .31
9.13 Skidding equipment .31
9.14 HVAC equipment .31
10 Installation, hook up and commissioning .31
10.1 Loadout and marine transportation .31
10.2 Installation .32
10.3 Hook up .32
10.3.1 Equipment hook up .32
10.3.2 Piping system hook up .32
10.3.3 Electrical hook up .33
10.4 Commissioning .33
10.4.1 General.33
10.4.2 Preparations before commissioning .33
10.4.3 System function testing .35
10.4.4 System load testing .39
11 Quality control, quality assurance and documents .40
12 In-service inspection and integrity management .40
13 Reuse .41
Annex A (informative) Additional information and guidance .42
Annex B (informative) Guidance for load and resistance factor design/working stress
design method .84
Annex C (informative) List of typical fabrication design drawings and documents .91
Annex D (informative) Typical loadout and seafastening design documents .96
Annex E (informative) Typical acceptance report for an MDR on an offshore fixed platform .97
Annex F (informative) Typical completion acceptance document and record for an MDR on
an offshore fixed platform .100
Annex G (informative) Typical in-service inspection plan for an MDR on a fixed
offshore platform .102
Bibliography .113
ISO 18647:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 4, Drilling and
production equipment.
vi © ISO 2017 – All rights reserved

ISO 18647:2017(E)
Introduction
This document is applicable to modular drilling rigs on offshore fixed platform. It is intended to provide
wide latitude in the design, construction, installation and commissioning of offshore modular drilling
rigs on fixed platforms, without hindering innovation. Sound engineering judgment is therefore
necessary in the use of this document.
The design of a modular drilling rig includes choices of drilling equipment, layout of modules, system
interface, modular structures and so on. The construction of modular drilling rigs includes the assembly
of structures, welding and inspection of structures, prefabrication and installation of the piping and
cables, outfitting, corrosion control and onshore installation of equipment.
Annex A provides background to, and guidance on, the use of this document, and is intended to be read
in conjunction with the main body of this document. The clause numbering in Annex A follows the same
structure as that in the body of the normative text in order to facilitate cross-referencing.
Annex B provides a guidance of load and resistance factor design/working stress design method.
Annex C provides a list of typical fabrication design documents of modular drilling rigs.
Annex D provides a typical loadout and seafastening design document.
Annex E provides a typical acceptance report for modular drilling rigs on offshore fixed platform.
Annex F provides a typical completion acceptance document and record for modular drilling rigs on
offshore fixed platform.
Annex G provides a typical in-service inspection plan for modular drilling rigs.
INTERNATIONAL STANDARD ISO 18647:2017(E)
Petroleum and natural gas industries — Modular drilling
rigs for offshore fixed platforms
1 Scope
This document gives requirements for the design, fabrication, installation, commissioning and integrity
management of modular drilling rigs on offshore fixed platforms.
The modular drilling rig includes some or all of the equipment as follows:
— drilling equipment including a derrick/mast and its controls that can be moved by skidding a drilling
support structure;
— drilling support equipment which includes support facilities such as power supply/distribution
system;
— mud and cement storage, mixing, monitoring and control equipment.
This document is applicable to the modular drilling equipment on offshore structures for the petroleum
and natural gas industries, as follows:
— new equipment arranged in a modularized form;
— the equipment contained in several modules, each of which can be lifted and installed on to the
platform, however, the equipment may be arranged within the modules as is convenient;
— the modules assembled together offshore for hook up and commissioning;
— intended for long term use on a new fixed offshore structure;
— Intended for temporary use on a number of different offshore platforms.
This document is not applicable to drilling equipment
— installed on mobile offshore units, and
— intended primarily for onshore use.
This document does not apply to those parts and functions of an offshore platform that are not directly
related to drilling.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4406, Hydraulic fluid power — Fluids — Method for coding the level of contamination by solid particles
ISO 6807, Rubber hoses and hose assemblies for rotary drilling and vibration applications — Specification
ISO 13501, Petroleum and natural gas industries — Drilling fluids — Processing equipment evaluation
ISO 13535, Petroleum and natural gas industries — Drilling and production equipment — Hoisting
equipment
ISO 18647:2017(E)
ISO 13626, Petroleum and natural gas industries — Drilling and production equipment — Drilling and
well-servicing structures
ISO 13702, Petroleum and natural gas industries — Control and mitigation of fires and explosions on
offshore production installations — Requirements and guidelines
ISO 13703, Petroleum and natural gas industries — Design and installation of piping systems on offshore
production platforms
ISO 14693, Petroleum and natural gas industries — Drilling and well-servicing equipment
ISO 15138, Petroleum and natural gas industries — Offshore production installations — Heating,
ventilation and air-conditioning
ISO 15513, Cranes — Competency requirements for crane drivers (operators), slingers, signallers and
assessors
ISO 19901-3, Petroleum and natural gas industries — Specific requirements for offshore structures —
Part 3: Topsides structure
ISO 19901-6, Petroleum and natural gas industries — Specific requirements for offshore structures —
Part 6: Marine operations
ISO 19902, Petroleum and natural gas industries — Fixed steel offshore structures
IEC 61892-6, Mobile and fixed offshore units — Electrical installations — Part-6: Installation
API RP 2FB, Recommended Practice for the Design of Offshore Facilities Against Fire and Blast Loading
API RP 14G, Recommended Practice for Fire Prevention and Control on Open Type Offshore Production
Platforms
API RP 505, Recommended Practice for Classification of Locations for Electrical Installations at Petroleum
Facilities Classified as Class I, Zone 0, Zone 1 and Zone 2
API Spec 16A, Specification for Drill Through Equipment
API Spec 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems
for Diverter Equipment
API Std 53, Blowout Prevention Equipment Systems for Drilling Wells
AWS D1.1/D1M, Structural Welding Code — Steel
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
cementing module
modularized facilities that include cementing pump, mixing device and manifold system, used to
provide cementing services
2 © ISO 2017 – All rights reserved

ISO 18647:2017(E)
3.2
drilling equipment set
DES
set of equipment that includes derrick/mast, substructure, drawworks, crown block, traveling block,
hook, TDS, rotary table, BOP, driller’s cabin, drill floor equipment, choke and kill manifold and can also
include shale shakers, degasser, desander, desilter, centrifuge, cuttings dryer, pipe handling system and
BOP handling system etc., used to implement hoisting and rotating functions during drilling operations
Note 1 to entry: The drilling equipment set is generally movable by means of skid rails such that the centre can be
positioned over one of a number of well slots.
3.3
drill floor clearance
clear distance between the bottom of the rotary table support beam and the BOP deck of the platform
3.4
drilling support module
DSM
structure that can include diesel generator set, fuel tank, air compressor and storage tank, sack storage
and mud mixing, electric drive and associated control system, mud tank, mud pump and auxiliary
equipment,
...