EN ISO 15138:2000
(Main)Petroleum and natural gas industries - Offshore production installations - Heating, ventilation and air-conditioning (ISO 15138:2000)
Petroleum and natural gas industries - Offshore production installations - Heating, ventilation and air-conditioning (ISO 15138:2000)
Erdöl- und Erdgasindustrie - Offshore-Produktionsanlagen - Heizung, Lüftung und Klimatisierung (ISO 15138:2000)
Die vorliegende Internationale Norm legt Anforderungen fest und enthält Regeln für die Konstruktion, Prüfung, Installation und Abnahme von Heiz-, Lüftungs-, Klimatisierungs- und Druckbeaufschlagungsanlagen/-ausrüstungen für alle Offshore-Produktionsanlagen der Erdöl- und Erdgasindustrie wie folgt:
neu und bestehend;
üblicherweise bemannt und üblicherweise unbemannt;
starr oder schwimmend, aber als Offshore-Produktionsanlage eingetragen.
ANMERKUNG Bei Anlagen, die möglicherweise den Kriterien "Klasse" oder "IMO/MODU-Richtlinien und -Bekanntmachungen" entsprechen, wird der Anwender auf die Heiz-, Lüftungs- und Klimatisierungsanlagenanforderungen gemäß diesen Richtlinien und Bekanntmachungen verwiesen. Wenn diese Anforderungen niedriger sind als für eine starre Anlage, sollte die vorliegende Internationale Norm, d. h. Anforderungen für starre Anlagen, angewendet werden.
Industries du pétrole et du gaz naturel - Installations en mer - Chauffage, ventilation et climatisation (ISO 15138:2000)
Petroleum and natural gas industries - Offshore production installations - Heating, ventilation and air-conditioning (ISO 15138:2000)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 15138:2001
01-junij-2001
Petroleum and natural gas industries - Offshore production installations - Heating,
ventilation and air-conditioning (ISO 15138:2000)
Petroleum and natural gas industries - Offshore production installations - Heating,
ventilation and air-conditioning (ISO 15138:2000)
Erdöl- und Erdgasindustrie - Offshore-Produktionsanlagen - Heizung, Lüftung und
Klimatisierung (ISO 15138:2000)
Industries du pétrole et du gaz naturel - Installations en mer - Chauffage, ventilation et
climatisation (ISO 15138:2000)
Ta slovenski standard je istoveten z: EN ISO 15138:2000
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
SIST EN ISO 15138:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 15138:2001
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SIST EN ISO 15138:2001
EUROPEAN STANDARD
EN ISO 15138
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2000
ICS 75.180.20
English version
Petroleum and natural gas industries - Offshore production
installations - Heating, ventilation and air-conditioning (ISO
15138:2000)
Industries du pétrole et du gaz naturel - Installations en Erdöl- und Erdgasindustrie - Offshore-Produktionsanlagen -
mer - Chauffage, ventilation et climatisation (ISO Heizung, Lüftung und Klimatisierung (ISO 15138:2000)
15138:2000)
This European Standard was approved by CEN on 26 October 2000.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2000 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15138:2000 E
worldwide for CEN national Members.
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SIST EN ISO 15138:2001
Page 2
EN ISO 15138:2000
CORRECTED 2003-06-04
Foreword
This document (EN ISO 15138:2000) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum and natural gas industries" in
collaboration with Technical Committee CEN/TC 12 "Materials, equipment and offshore
structures for petroleum and natural gas industries", the secretariat of which is held by
AFNOR.
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 May 2001, and conflicting national
standards shall be withdrawn at the latest by May 2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
Endorsement notice
The text of ISO 15138:2000 has been approved by CEN as EN ISO 15138:2000 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
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SIST EN ISO 15138:2001
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EN ISO 15138:2000
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications,
indicated by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 8861 1998 Shipbuilding - Engine-room EN ISO 8861 1998
ventilation in diesel-engined
ships - Design requirements and
basis of calculations
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SIST EN ISO 15138:2001
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SIST EN ISO 15138:2001
INTERNATIONAL ISO
STANDARD 15138
First edition
2000-11-01
Petroleum and natural gas industries —
Offshore production installations —
Heating, ventilation and air-conditioning
Industries du pétrole et du gaz naturel — Installations en mer —
Chauffage, ventilation et climatisation
Reference number
ISO 15138:2000(E)
©
ISO 2000
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SIST EN ISO 15138:2001
ISO 15138:2000(E)
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ii © ISO 2000 – All rights reserved
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SIST EN ISO 15138:2001
ISO 15138:2000(E)
Contents Page
Foreword.iv
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Abbreviated terms .2
5 Design .3
5.1 Introduction.3
5.2 Development of design basis.6
5.3 System design — General .10
5.4 Area-specific system design .11
Annex A (informative) Guidance to clause 5 Design.14
Annex B (informative) Equipment and bulk selection.41
Annex C (informative) Installation and commissioning guidance .61
Annex D (informative) Operation and maintenance.66
Annex E (informative) Data sheets .69
Annex F (informative) Flange standard.101
Bibliography.104
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SIST EN ISO 15138:2001
ISO 15138:2000(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO 15138 was prepared by Technical Committee ISO/TC 67, Materials, equipment and
offshore structures for petroleum and natural gas industries, Subcommittee SC 6, Processing equipment and
systems.
Annexes A through F of this International Standard are for information only.
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SIST EN ISO 15138:2001
INTERNATIONAL STANDARD ISO 15138:2000(E)
Petroleum and natural gas industries — Offshore production
installations — Heating, ventilation and air-conditioning
1 Scope
This International Standard specifies requirements and provides guidance for design, testing, installation and
commissioning of heating, ventilation, air-conditioning and pressurization systems and equipment on all offshore
production installations for the petroleum and natural gas industries which are:
� new and existing;
� normally occupied by personnel and not normally occupied by personnel;
� fixed or floating but registered as an offshore production installation.
NOTE For installations that could be subject to "Class" or "IMO/MODU Codes & Resolutions", the user is referred to HVAC
requirements under these rules and resolutions. Should these requirements be of a lesser degree than those being considered
for a fixed installation, then this International Standard, i.e. requirements for fixed installation, should be utilized.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 8861, Shipbuilding — Engine-room ventilation in diesel-engined ships — Design requirements and basis of
calculations.
IEC 60079-10, Electrical apparatus for explosive gas atmospheres — Part 10: Classification of hazardous areas.
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply.
3.1
displacement ventilation
movement of air within a space in piston- or plug-type motion
NOTE No mixing of room air occurs in ideal displacement flow, which is desirable for removing pollutants generated within
aspace.
3.2
fixed offshore installation
all facilities located and installed on fixed offshore structures, which are provided to extract oil and gas
hydrocarbons from subsea oil and gas reservoirs
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ISO 15138:2000(E)
3.3
fixed offshore structure
structure permanently fixed to or located on the sea bed, including moored ships and hulls, which is held in position
by anchors or tensioned cables and is provided to (structurally) support topsides facilities
NOTE Vessels and drilling rigs, etc. which are in transit or engaged in exploration and appraisal activities are specifically
excluded from this definition.
3.4
fugitive emission
emission which is always present on a molecular scale from all potential leak sources in a plant under normal
operating conditions
NOTE As a practical interpretation, a fugitive emission is one which cannot be detected by sight, hearing or touch but may
be detected using bubble-test techniques or tests of a similar sensitivity.
3.5
open area
area in an open-air situation where vapours are readily dispersed by wind
NOTE Typical air velocities in such areas should rarely be less than 0,5 m/s and should frequently be above 2 m/s.
3.6
temporary refuge
TR
place where personnel can take refuge for a pre-determined period whilst investigations, emergency response and
evacuation pre-planning are undertaken
[ISO 13702:1999, definition 2.1.52]
4 Abbreviated terms
AC Alternating Current
AC/h Air Changes per hour
AHU Air Handling Unit
AMCA Air Movement and Control Association Inc.
API American Petroleum Institute
ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers
BS British Standard
CCR Central Control Room
CFD Computational Fluid Dynamics
CIBSE Chartered Institution of Building Services
CMS Control and Monitoring System
CVU Constant-Volume Terminal Reheat Unit
DC Direct Current
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SIST EN ISO 15138:2001
ISO 15138:2000(E)
DE Driven End
DX Direct Expansion
EN European Standard
ESD Emergency Shutdown
F&G Fire and Gas
HAZOP Hazard and Operability Study
HSE Health, Safety and Environment
HVAC Heating, Ventilation and Air Conditioning
HVCA Heating and Ventilating Contractors' Association
IEC International Electrotechnical Commission
IMO International Maritime Organization
IP Institute of Petroleum
IP Integrity Protection
LFL Lower Flammable Limit
LQ Living Quarters
MODU Mobile Offshore Drilling Unit
NDE Non-driven End
NFPA National Fire Protection Association
NS Norsk Standard (Norwegian Standard)
QRA Quantitative Risk Analysis
r.m.s. Root mean square
5 Design
5.1 Introduction
Clause 5 together with annex A provide requirements and guidance on all aspects of the design of heating,
ventilation and air-conditioning (HVAC) systems for offshore installations for the petroleum and natural gas
industries. The HVAC systems form part of the safety services of the installation. The safety goals are to:
� prevent, through pressurization, the ingress of potentially flammable gas-air mixtures into all designated
nonhazardous areas;
� prevent the formation of potentially hazardous concentrations of flammable gaseous mixtures in hazardous
areas by provision of sufficient ventilation for the dilution, dispersion and removal of such mixtures;
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SIST EN ISO 15138:2001
ISO 15138:2000(E)
� maintain ventilation to all equipment and areas/rooms which are required to be operational during an
emergency when the main source of power is unavailable;
� provide a controlled environment in which personnel, plant and systems can operate effectively, including
smoke control.
These high-level goals are supported by lower-level goals of a functional nature which are stated later in the
appropriate sections of this document.
Subclause 5.2 concentrates on functional requirements in the development of a basis of design for either a new
project or major modification to an existing installation. The requirements are related to:
a) platform orientation and layout;
b) hazard identification and hazardous area classification;
c) environmental conditions;
d) choice of natural or mechanical ventilation systems;
e) development of the controls philosophy;
f) material selection;
g) design margins and calculations;
h) design development and validation using wind tunnel testing or Computational Fluid Dynamics (CFD).
Ventilation may be natural (i.e. the wind) or mechanical or a combination of both. Throughout this International
Standard, the use of the term "ventilation" should be taken to include either natural or mechanical ventilation, as
appropriate.
Natural ventilation is preferred over mechanical ventilation where practical, since it is available throughout gas
emergencies, does not rely on active equipment and reduces effort required for HVAC maintenance.
For new designs, the development of a design basis may be progressed using the guidance and examples of good
engineering practice that are identified in this document, though it should be recognized that it involves a process
of iteration as the design matures and does not take place as the sequential series of steps used in this document
to facilitate presentation. The processes outlined here are equally applicable to major redevelopments to existing
installations, but some compromise may need to be made as a result of historical decisions regarding layout,
equipment selection and the prevailing level of knowledge at the time. The challenge of providing cost-effective
solutions in redevelopment may be significantly greater than for a new design.
The finalized basis of design may be recorded on data sheets such as those provided in annex E.
The completed design should be subject to hazard assessment review. The Hazard and Operability Study
(HAZOP) technique may be used for this.
In 5.2, objectives are identified which establish the goals. Functional requirements are outlined which will enable
the objectives to be achieved. The functional requirements are supported by technical guidance given in annex A,
which discusses the suitability of different techniques for different applications and identifies examples of good
engineering practice or cost-effective solutions that have been used in some parts of the world. The functional
requirements may be satisfied by other methods not identified in this document, but it is the responsibility of the
user to assess whether the method is technically acceptable and acceptable to the local regulator.
Subclause 5.3 addresses the fundamental choice in system design, i.e. between natural and mechanical methods
of ventilation.
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Subclause 5.4 gives functional requirements associated with the design of HVAC systems for different areas of a
typical offshore installation which require particular technical considerations due to their location and/or their
function.
Figure 1 is intended to illustrate the processes undertaken at various stages of the installation life cycle and to
identify reference documents and the appropriate clauses of this International Standard which provide the
necessary guidance.
Figure 1 — Application of this International Standard to a project life cycle
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SIST EN ISO 15138:2001
ISO 15138:2000(E)
5.2 Development of design basis
5.2.1 Orientation and layout
5.2.1.1 Objective
To provide input into the early stages of design development so that areas and equipment that may have a
requirement for HVAC, or be affected by its provision, are sited in an optimum location, so far as is reasonably
practicable.
5.2.1.2 Functional requirements
Installation layout requires a great deal of coordination between the engineers involved during design and the
operation, maintenance and safety specialists. Attention shall also be paid to the minimization of construction,
offshore hook-up and commissioning. It is not the intention of this International Standard to detail a platform-layout
philosophy, but to identify areas where considerations of the role of HVAC, and requirements for it, might have an
impact in the decision-making surrounding installation orientation and layout.
Each installation should have a temporary refuge (TR). The TR should in almost all cases be the LQ, where they
are provided. The survivability of the TR, which is directly related to the air change rate, may introduce
consideration of active HVAC systems for pressurization of the Living Quarters (LQ) or enclosed escape and
evacuation routes. Active systems require detailed risk assessment exercises to be undertaken as part of the
design verification, and passive systems are generally preferred since they do not rely on equipment functioning
under conditions of emergency.
Hazardous areas, particularly those containing pressurized hydrocarbon systems, should be located as far as
practicable from the TR so that any gas leaks will be naturally dispersed.
The layout shall include correct positioning of ventilation inlets and outlets, engine inlets and exhausts, vents and
flares to allow for safe operation, particularly of the TR. Hot exhausts shall not interfere with crane, helicopter,
production or drilling operations or the LQ, and shall be directed so as not to be drawn into gas turbine air intakes.
Air intakes to hazardous and nonhazardous areas shall be located as far as is reasonably practicable from the
perimeter of a hazardous envelope and not less than the minimum distance specified in the prevailing area
classification code.
For guidance, reference is made to clause A.1.
5.2.2 Hazardous area classification and the role of HVAC
5.2.2.1 Objective
To adopt in the design and operation processes a consistent philosophy for the separation of hazardous and
nonhazardous areas and the performance of ventilation in those areas.
5.2.2.2 Functional requirements
IEC 60079-10 shall be used for classification of a hazardous area. The choice of hazardous area code determines
the choice of equipment to be used in particular areas of the installation and also provides input to the performance
standards for HVAC systems in those areas.
For guidance, reference is made to clause A.2.
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ISO 15138:2000(E)
5.2.3 Environmental conditions
5.2.3.1 Objective
To determine an environmental basis of design that enables HVAC systems to be designed in order to meet the
objectives for HVAC.
5.2.3.2 Functional requirements
External and internal environmental bases suitable for the location of the installation shall be established for the
design.
For guidance, reference is made to clause A.3.
5.2.4 Natural/mechanical ventilation
5.2.4.1 Objective
To select a means of providing ventilation to any hazardous or nonhazardous area of an installation.
5.2.4.2 Functional requirements
Provide ventilation to any area which may require it, giving consideration to:
a) meteorological conditions, particularly prevailing wind and its strength, external temperature, and precipitation;
b) risk-driven segregation of hazardous areas;
c) heating and cooling design loads;
d) life cycle costs of the purchase and maintenance of mechanical HVAC and associated Emergency Shutdown
(ESD) systems;
e) environmental considerations, such as personnel comfort, particulate control, and noise;
f) weather integrity of instrumentation and controls;
g) need for structural integrity;
h) control and recovery from hydrocarbon loss of containment;
i) process heat conservation.
NOTE Many of these factors are controlled by local legislation, which should be consulted for implications.
For guidance, reference is made to clause A.4.
5.2.5 Selection of controls philosophy
5.2.5.1 Objective
To provide a system for controlling HVAC systems from a frequently manned location that provides the operator
with essential information on the status of the plant and is integrated with the installation fire and gas (F&G) and
ESD systems, so that actions in an emergency minimize the risk to personnel.
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5.2.5.2 Functional requirements
The control and monitoring system shall:
a) provide the operator with the status of the HVAC plant;
b) provide the minimum necessary controls for the plant consistent with the operation and maintenance
philosophies;
c) provide a link to the installed F&G and ESD systems, if required;
d) comply with the installation smoke and gas control philosophy.
For guidance, reference is made to clause A.5.
5.2.6 Operating and maintenance philosophy
5.2.6.1 Objective
To provide an HVAC design which provides as high a degree of operational availability, so far as is reasonably
practicable, within the constraints imposed by installed cost, maintenance resources and the consequences of
failure.
5.2.6.2 Functional requirements
The design shall include the necessary standby arrangements, plant operating margins, access provisions and
requirements for routine maintenance to enable a specified operational availability to be achieved at minimum cost
over the lifetime of the installation.
For guidance, reference is made to clause A.6.
5.2.7 Materials and corrosion
5.2.7.1 Objective
To specify materials and protective coatings for equipment and components that minimize, as far as is reasonably
practicable, life cycle costs for the installation and potential harm to personnel who may be affected by their
operation.
5.2.7.2 Functional requirements
The design shall recognize the saliferous atmosphere and relative humidity that will be present throughout the
installation life.
Non-combustible, non-toxic materials shall be used throughout; such materials, when heated, shall not emit toxic
fumes.
The design shall recognize that operation in conjunction with flammable atmospheres may be required for some
components.
For guidance, reference is made to clause A.7.
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5.2.8 Design margins and calculations
5.2.8.1 Objective
To ensure that design integrity is demonstrated in the provision of cost-effective HVAC systems by calculations
which take due account of the accuracy of HVAC system data and extremes of design environmental conditions.
5.2.8.2 Functional requirements
The design shall be documented in accordance with suitable industry standards, i.e. those of ASHRAE, CIBSE or
similar recognized authorities.
Specification of equipment shall recognize the maturity of the design and the level of information provided by other
disciplines in the design process.
For guidance, reference is made to clause A.8.
5.2.9 Wind tunnel and CFD modelling
5.2.9.1 Objective
To undertake a modelling programme that reproduces installation conditions within a reasonable accuracy, so that
design options may be consistently evaluated and the chosen option optimized with a high degree of confidence
that the design performance will be replicated by actual measurements.
5.2.9.2 Functional requirements
If required, a modelling programme shall be undertaken to predict
� natural ventilation rates and frequencies;
� wind pressure distribution around the installation to fix air inlet and outlet positions;
� requirements for secondary ventilation;
� gas build-up inside hazardous modules;
� helideck configurations and operating envelopes;
� hot plume and contaminant (noxious exhaust and hydrocarbon) smoke or gas flows around the installation.
For guidance, reference is made to clause A.9.
5.2.10 Performance standards
5.2.10.1 Objective
To define performance standards for HVAC systems which may be used as a basis for managing risk thr
...
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