ISO/TS 81346-10:2015

TECHNICAL ISO/TS
SPECIFICATION 81346-10
First edition
2015-02-15
Industrial systems, installations and
equipment and industrial products —
Structuring principles and reference
designation —
Part 10:
Power plants
Systèmes industriels, installations et appareils et produits
industriels — Principes de structuration et désignation de
référence —
Partie 10: Centrales électriques
Reference number
ISO/TS 81346-10:2015(E)
©
ISO 2015

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ISO/TS 81346-10:2015(E)

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© ISO 2015
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Published in Switzerland
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ISO/TS 81346-10:2015(E)

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Designation systematic . 5
4.1 General . 5
4.2 Process of forming designations . 5
4.3 General rules for designation structure . 6
4.4 Rules for forming designations . 7
5 Designation tasks. 8
5.1 General . 8
5.2 Conjoint designation . 8
5.3 Designation of technical objects — Reference designation . 9
5.3.1 General. 9
5.3.2 Function aspect . 9
5.3.3 Product aspect .10
5.3.4 Transition from function aspect to product aspect .10
5.3.5 Location aspect .11
5.4 Specific designations .11
5.4.1 Signal designation .11
5.4.2 Terminal designation .11
5.4.3 Document designation .12
6 Structure and contents of designation blocks .12
6.1 General .12
6.2 Designation block “Conjoint designation” .12
6.3 Function aspect.12
6.3.1 Designation block “Function”.12
6.3.2 Designation block “Function allocation” .13
6.4 Product aspect — Designation block “Product” .14
6.5 Transition from function aspect to product aspect .15
6.6 Location aspect .19
6.6.1 Designation block “Point of installation” .19
6.6.2 Designation block “Location” .21
6.7 Specific designations .22
6.7.1 Signal designation .22
6.7.2 Terminal designation .25
6.7.3 Document designation .26
7 Application of designation .26
7.1 Combination of designation blocks .26
7.2 Designation notation .27
7.2.1 General.27
7.2.2 Notation in technical documents .27
7.2.3 Notation in the plant . .28
Annex A (normative) Representation of designations.29
Annex B (normative) Special stipulations .31
Annex C (informative) Stipulations between parties to the project .35
Annex D (informative) Application examples .36
Bibliography .44
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ISO/TS 81346-10:2015(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 2.
The main task of technical committees is to prepare International Standards. 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.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of normative document:
— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical
experts in an ISO working group and is accepted for publication if it is approved by more than 50 %
of the members of the parent committee casting a vote;
— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a
technical committee and is accepted for publication if it is approved by 2/3 of the members of the
committee casting a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for
a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or
ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be
transformed into an International Standard or be withdrawn.
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.
ISO/TS 81346-10 was prepared by Technical Committee ISO/TC 10, Technical product documentation,
Subcommittee SC 10, Process plant documentation and tpd-symbols.
Documents in the 80000 to 89999 range of reference numbers are developed by collaboration between
ISO and IEC.
ISO 81346 consists of the following parts, under the general title Industrial systems, installations and
equipment and industrial products — Structuring principles and reference designation:
— Part 3: Application rules for a reference designation system [Technical Specification]
— Part 10: Power plants [Technical Specification]
IEC 81346 consists of the following parts, under the general title Industrial systems, installations and
equipment and industrial products — Structuring principles and reference designation:
— Part 1: Basic rules
— Part 2: Classification of objects and codes for classes
Further parts on sector-specific rules are under consideration.
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NOTE ISO/TC 10/SC 10 and IEC/TC 3 have agreed to integrate their publications on structuring principles and
reference designation in the ISO/IEC 81346 series to ensure a consistent set of publications based on IEC 81346–1
and −2. Against this background, ISO/TS 16952-10 has been converted to ISO/TS 81346-10 following its systematic
review. At this time, apart from necessary updates, no further changes have been made. Among the issues to be
considered at the next review/revision is how to make the referenced VGB publications, although recognized as
having wide acceptance and authoritative status as well as being publicly available, better accessible to ISO/IEC
users, e.g. by integrating them in the ISO/IEC 81346 series.
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ISO/TS 81346-10:2015(E)

Introduction
Based on ISO/TS 81346-3, this part of ISO 81346 serves to designate plants, sections of plants and
items of equipment in any type of installation for industrial production of electrical and thermal energy
according to task, type and location. This sector-specific Reference Designation System (RDS) is intended
for application by all engineering disciplines for the entire life cycle of a plant, from planning, licensing,
construction, operation and maintenance, re-powering, extension and recreation, to dismantling and
demolition. Based on the structuring principles and reference designation rules of IEC 81346 and other
documents, ISO 81346 breaks down these rules into interdisciplinary guidelines for practical application.
The relationships of input documents with this part of ISO 81346 are shown in Figure 1.
Figure 1 — Structuring and designation standards
This part of ISO 81346 establishes the prerequisites for
— uniform designation of all power plant processes (see Figure 2 for a summary of the energy
conversion cycle),
— uniform designation of all power plant types,
— language-independent codes to ensure international applicability,
— adequate capacity and possible detail for designation of all systems, equipment and structures,
— adequate extension possibilities for new technologies,
— consistent designation for planning, licensing, construction, operation, maintenance and
decommissioning,
— common applicability in mechanical, electrical, instrumentation and control (I&C) and civil
engineering, with the simultaneous possibility to designate according to function, product and
location aspects,
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— fulfilment of quality management requirements,
— fulfilment of the technical documents management system requirements,
— fulfilment of the requirements for occupational safety and ergonomics.
Figure 2 — Principle of energy conversion including supply and disposal processes
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TECHNICAL SPECIFICATION ISO/TS 81346-10:2015(E)
Industrial systems, installations and equipment and
industrial products — Structuring principles and reference
designation —
Part 10:
Power plants
1 Scope
This part of ISO 81346 contains sector-specific stipulations for structuring principles and reference
designation rules on technical products and technical product documentation of power plants.
It applies in combination with IEC 81346-2, ISO/TS 81346-3, VGB-B 101 and VGB-B 102 for the
classification of systems and objects, and for function-, product- and location-specific designation of
technical products and their documentation for power plants.
It specifies the designation blocks for the clear identification and localization of the technical products,
which are used for their labelling in the plant, for their designation in technical documents and for the
designation of the technical documents as well.
This part of ISO 81346 encompasses the process of energy conversion. The specifications in this document
apply for the power plant process, for the primary energy supply and final products distribution, as well
as for auxiliary media and auxiliary energy supply, waste materials and waste energy disposal.
This part of ISO 81346 is not applicable to recovery of the primary energy and the media for supplying
the process, nor to the processing of residues from process disposal (e.g. gypsum, slag products, waste
water, etc.).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
IEC 60445, Basic and safety principles for man-machine interface, marking and identification — Identification
of equipment terminals and of terminations of certain designated conductors, including general rules of an
alphanumeric system
IEC 61082-1, Preparation of documents used in electrotechnology — Part 1: Rules
IEC 61175, Industrial systems, installations and equipment and industrial products — Designations of
signals
IEC 61355-1, Classification and designation of documents for plants, systems and equipment — Part 1: Rules
and application tables
IEC 61666, Industrial systems, installations and equipment and industrial products — Identification of
terminals within a system
IEC 81346-1, Industrial systems, installations and equipment and industrial products — Structuring
principles and reference designations — Part 1: Basic rules
IEC 81346-2, Industrial systems, installations and equipment and industrial products — Structuring
principles and reference designations — Part 2: Classification of objects and codes for classes
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ISO/TS 81346-10:2015(E)

ISO/TS 81346-3:2012, Industrial systems, installations and equipment and industrial products —
Structuring principles and reference designations — Part 3: Application rules for a reference designation
system
EN 50005, Low Voltage Switchgear and Controlgear for Industrial Use — Terminal Marking and Distinctive
Number — General Rules
VGB-B 101, Reference designation system for power plants (RDS-PP) — Letter codes for power plant systems
1)
(system key)
VGB-B 102, Reference designation system for power plants (RDS-PP) — Letter codes for basic functions and
1)
product classes
3 Terms and definitions
For the purpose of this document, the terms and definitions given in ISO/TS 81346-3 and the following
apply.
3.1
ancillary system
system which is not directly required for the power plant process
Note 1 to entry: This includes heating, ventilation, air-conditioning systems, space-heating systems, stationary
compressed air supplies, fire protection systems, cranes, elevators, workshops, staff amenities, etc.
3.2
aspect
specific way of viewing an object
Note 1 to entry: Such ways may be:
— what the system or object is doing (function viewpoint);
— how the system or object is constructed (product viewpoint);
— where the system or object is located (location viewpoint).
[SOURCE: IEC 81346-1:2009, definition 3.3]
3.3
auxiliary system
system which is required for the support of a power plant process
Note 1 to entry: This includes auxiliary steam system, compressed air, carrier air, control air, central chemicals
supply, sampling systems, etc.
3.4
control
purposeful action on or in a process to meet specified objectives
[SOURCE: IEC 60050-351:2013, definition 351-42-19]
Note 1 to entry: This includes measure, count, monitor, indicate, alert, record, log, manipulate, evaluate, optimize,
intervene, manipulate by hand, safeguard, structure, configure, parameter, automate.
3.5
designation block
structured compilation of related information units, consisting of a prefix, letters and numbers, and
optionally a breakdown mark
1)  Source: www.vgb.org.
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3.6
document kind class
group of document kinds having similar characteristics concerning the content of information
independent of the form of presentation
[SOURCE: IEC 61355-1:2008, definition 3.7]
3.7
documentation
collection of documents assigned to a specific object
Note 1 to entry: This may include technical, commercial and/or other documents.
[SOURCE: IEC 61082-1:2006, definition 3.1.4]
3.8
functional area
combination of groups and/or elements in a unit that can be used independently
3.9
functional group
combination of elements in a unit that can be used independently
3.10
functional unit
item under consideration defined according to function or effect
Note 1 to entry: A functional unit produces the interactive effect between input variables and output variables.
Note 2 to entry: A functional unit may be implemented by one or several physical units or program modules.
Note 3 to entry: If compound terms are used to designate functional units, the following should be used as the last
word (in ascending order of rank):
— element,
— system.
Note 4 to entry: This entry was numbered 351–32–02 in IEC 60050–351:2006.
[SOURCE: IEC 60050-351:2013, definition 351-56-02]
3.11
multi-level reference designation
reference designation consisting of concatenated single-level reference designations
[SOURCE: IEC 81346-1:2009, definition 3.13]
3.12
object
entity treated in the process of development, implementation, usage and disposal
Note 1 to entry: The entity may refer to a physical or non-physical “thing”, i.e. anything that might exist, exists or
did exist.
Note 2 to entry: The object has information associated to it.
[SOURCE: IEC 81346-1:2009, definition 3.1]
3.13
operating equipment
all products, which serve to implement technical tasks as a whole or in individual parts
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3.14
physical unit
item under consideration, defined according to construction or configuration
Note 1 to entry: One or several functional units may be implemented in a single physical unit. The corresponding
functional unit(s) is/are in some cases not explicitly designated.
Note 2 to entry: The various parts of a physical unit need not be functionally interrelated. For example, a physical
unit may be in the form of an integrated circuit with four independent AND modules.
Note 3 to entry: If compound terms are used to designate physical units, the following should be used as the last
word (in ascending order of rank):
— component,
— assembly,
— device,
— plant.
Note 4 to entry: The entry was numbered 351–32–03 in IEC 60050–351:2006.
[SOURCE: IEC 60050-351:2013, definition 351-56-03]
3.15
plant
complete set of technical equipment and facilities for solving a defined technical task
Note 1 to entry: A plant includes apparatus, machines, instruments, devices, means of transportation, control
equipment and other operating equipment.
Note 2 to entry: This entry was numbered 351–21–45 in IEC 60050–351:2006.
[SOURCE: IEC 60050-351:2013, definition 351-42-35]
3.16
plant section
part of a process plant that can, at least occasionally, be operated independently
[SOURCE: ISO 10628:1997, definition 3.7]
3.17
power plant process
process for the generation of electrical energy and/or heat energy products, including the conversion,
supply, and disposal processes
3.18
power plant unit
technical plant including all equipment needed for fulfilment of a power plant process
3.19
system
set of interrelated objects considered in a defined context as a whole and separated from their
environment
Note 1 to entry: A system is generally defined with the view of achieving a given objective, e.g. by performing a
definite function.
Note 2 to entry: Elements of a system may be natural or man-made material objects, as well as modes of thinking
and the results thereof (e.g. form of organization, mathematical methods, programming languages).
Note 3 to entry: The system is considered to be separated from the environment and from the other external
systems by an imaginary surface, which cuts the links between them and the system.
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Note 4 to entry: The term “system” should be qualified when it is not clear from the context to what it refers, e.g.
control system, colourimetric system, system of units, transmission system.
Note 5 to entry: When a system is part of another system, it may be considered as an object as defined in this
standard.
[SOURCE: IEC 81346-1:2009, definition 3.2]
3.20
technical equipment
physical or functional unit used to fulfil a technical task
3.21
terminal
point of access to an object intended for connection to an external network
Note 1 to entry: The connection may refer to
a) a physical interface between conductors and/or contacts, or piping and/or duct systems to provide a signal,
energy or material flow path,
b) an association of functional nature established between logical elements, software modules, etc. for
conveying information.
Note 2 to entry: The external networks may be of different nature and accordingly they may be classified.
IEC 81714–3 provides such classifications.
[SOURCE: IEC 61666:2010, definition 3.9]
3.22
works
system of industrial complexes and the associated infrastructure in one location
[SOURCE: ISO 10628:1997, definition 3.4]
4 Designation systematic
4.1 General
The designation systematic has to be understood as a well-organized, methodical process of forming
permanent designations with ergonomic notation according to simple, easily learned rules that are
based on predefined standards.
4.2 Process of forming designations
Starting from site plans, process flow diagrams, overview diagrams, etc., the entire power plant shall be
broken down into plant sections, units and, if necessary, sub-units.
These shall then be further broken down, based on functional aspects, into systems, subsystems and
technical equipment. Consistent compliance with the rule of constituency (an object can contain more
than one sub-objects but is a constituent of one higher object only) shall be ensured. The objects identified
in this way shall be classified based on specified letter codes in accordance with VGB-B 101 for systems
and subsystems and VGB-B 102 for technical objects, and then provided with reference designations. All
information about the object is governed under this designation.
Structuring of location-specific systems (structures, sites, etc.) shall be performed in the same way.
In further processing, the products required for fulfilment of the tasks shall be specified and designated.
The combination of the function and product aspects generates a unique designation.
The results shall be documented.
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4.3 General rules for designation structure
The general designation structure corresponds to ISO/TS 81346-3:2012, 6.1. It shall consist of a
maximum of three main parts, see Figure 3.
Figure 3 — Parts of the identifier
The permitted combinations and their sequence are given in Figure 4.
Figure 4 — Permitted combinations of identifier parts
Each of the three identifier parts consists of one or more designation blocks (see Figure 5 and Clause 6).
Each designation block always contains
— a prefix in accordance with Table 1 and
— letters and numbers in accordance with Figure 6.
Figure 5 — Designation block
The designation blocks are distinguished by prefixes and thus uniquely identified. The prefixes are
always the first data characters in the designation blocks.
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Table 1 — Prefixes for designation tasks
Prefix
Prefix origin, basic principles
Designation Designation tasks/aspect
specified in
1 2
# Number Conjoint designation ISO/TS 81346-3
= Equals Fun
...