CEN/TS 17385:2019
(Main)Method for condition assessment of immobile constructed assets
Method for condition assessment of immobile constructed assets
The document deals with the methodologies of condition assessment for all types of structures
Verfahren zur Zustandsbeurteilung von Bauwerken
Dieses Dokument beschreibt ein Verfahren für die einheitliche und objektive Beurteilung des physischen Zustandes aller Arten von Bauwerken. Diese Beurteilung führt zu einer Zustandsklasse, die den technischen Stand der Instandhaltung einer Anlage zu einem gegebenen Zeitpunkt auf einer 6 Punkte-Skala ausdrückt. Sie kann daher entweder den Verfall einer Anlage oder eines ihrer Teile oder den physischen Zustand zum Zeitpunkt der Inbetriebnahme darstellen. Durch Wiederholung der Beurteilung in regelmäßigen zeitlichen Abständen lässt sich der Abbau der Anlage im Laufe der Zeit überwachen.
Dieses Dokument stellt ein einheitliches, objektives und reproduzierbares Verfahren mit nachweisbaren Ergebnissen zur Verfügung. Es beschreibt, wie sich die Zustandsklasse aufgrund einer zerstörungsfreien Mängelbeobachtung der betreffenden Anlage oder eines ihrer Teile durch Anwendung eines vorher festgelegten Strukturplans ermitteln lässt. Der geeignete Strukturplan hängt von der Anlage selbst ab, und Hinweise für das Erstellen eines einheitlichen Strukturplans sind in Anhang C zu finden.
[Bild 1 - Anwendbarkeit der Zustandsbeurteilung]
Dieses Dokument kann als Teil eines Anlagenverwaltungsplans angewendet werden, um:
a) den tatsächlichen physischen Zustand einer einzelnen Anlage oder eines Anlagenbestandes zu bewerten;
b) eine auf dem tatsächlichen Zustand der Anlagen basierende Instandhaltungsstrategie zu entwickeln;
c) die Kostenplanung zu unterstützen;
d) Mitteilungen über den tatsächlichen Zustand gegenüber dem erwünschten Zustand zu ermutigen und zu unterstützen.
Méthode pour l’évaluation de l’état des biens immeubles construits
Le présent document décrit une méthode permettant d’évaluer l’état physique de tous les types de biens immeubles construits de manière uniforme et objective. L’évaluation aboutit à une classe d’état, qui exprime l’état technique d’entretien d’un bien à un moment donné sur une échelle de six points. Elle peut donc représenter soit la détérioration d’un bien ou d’une partie d’un bien, soit l’état physique au moment de la mise en service. En répétant l’évaluation à intervalles réguliers, il est possible de suivre la dégradation du bien au fil du temps.
Le présent document propose une méthode uniforme, objective et reproductible avec des résultats traçables. Il décrit comment déterminer la classe d’état à partir de l’observation non destructive des défauts d’un bien ou d’une partie d’un bien en utilisant une arborescence matérielle prédéfinie. L’arborescence matérielle appropriée d’un bien dépend du bien concerné et l’Annexe C donne des recommandations pour la définition d’une arborescence matérielle uniforme.
Metoda za oceno stanja nepremičnin
V tem standardu je opisana metoda za podajanje enotne in objektivne ocene fizičnega stanja vseh vrst nepremičnin. Rezultat ocenjevanja je razred stanja na šeststopenjski lestvici, ki označuje tehnično stanje vzdrževanja nepremičnine v določenem trenutku. Zaradi tega lahko predstavlja poslabšanje fizičnega stanja nepremičnine ali njenega dela v času ocene. Postopno poslabšanje nepremičnine je mogoče spremljati s ponavljanjem ocenjevanja v rednih časovnih presledkih. Ta dokument ponuja enotno, objektivno in ponovljivo metodo s sledljivimi rezultati. Opisuje, kako doseči razred stanja na podlagi neporušitvenega opazovanja napak pri kateri koli nepremičnini ali njenem delu s predhodno določeno razčlenitveno strukturo. Ustrezna razčlenitvena struktura nepremičnine je odvisna od zadevne nepremičnine, smernice za določanje enotne razčlenitvene strukture pa so podane v dodatku C.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2020
Metoda za oceno stanja nepremičnin
Method for condition assessment of immobile constructed assets
Condition-Assessment-Verfahren
Méthode pour l’évaluation de l’état des biens immeubles construits
Ta slovenski standard je istoveten z: CEN/TS 17385:2019
ICS:
03.100.01 Organizacija in vodenje Company organization and
podjetja na splošno management in general
91.040.01 Stavbe na splošno Buildings in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN/TS 17385
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
November 2019
TECHNISCHE SPEZIFIKATION
ICS 03.100.01
English Version
Method for condition assessment of
immobile constructed assets
Méthode pour l'évaluation de l'état des biens Condition-Assessment-Verfahren
immeubles construits
This Technical Specification (CEN/TS) was approved by CEN on 19 August 2019 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.
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 NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
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. CEN/TS 17385:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 3
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 6
4 Condition assessment overview . 9
Annex A (normative) Guidance on defining a list of defects . 15
Annex B (normative) Method for calculation of aggregated condition class . 17
Annex C (informative) Example of defining a breakdown structure and coding . 19
Annex D (informative) Prioritization and quantifying risks . 22
Bibliography . 26
European foreword
This document (CEN/TS 17385:2019) has been prepared by Technical Committee CEN/TC 319
“Maintenance”, the secretariat of which is held by UNI.
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 organisations of the
following countries are bound to announce this Technical Specification: 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.
Introduction
The condition of an immobile constructed asset is one of the factors which determine the value of the
asset. The asset value is also influenced by the quality of the maintenance performed. As maintenance
costs are a significant part of the total cost of ownership of a constructed asset, maintenance actions will
be carefully weighed against their benefit.
The method in this standard provides an objective evaluation of the physical condition of an asset and is
based on that by NEN for the Dutch market in 2006 and may be used to identify and justify a maintenance
plan for the asset.
Condition assessment can be applied to all immobile constructed assets, including infrastructure assets
such as buildings and bridges. However, this method is less suitable for assets such as electrical and
mechanical equipment. It offers a specific survey methodology to evaluate and record defects, which can
be ascertained by any means necessary.
A condition assessment is based on non-destructive surveys to identify quantitative and qualitative
aspects of defects in an item and hence determine its condition class. Dismantling, sampling and drilling
inspection holes can be included in the assessment. The condition class shall deliver fact-based data to
managers, whom should be enabled to distinguish between medium- and long-term maintenance
measures in relationship to the desired level of maintenance. Alternative maintenance scenarios can thus
be developed and evaluated against the value of the asset, which in turn may lead to a change in asset
management policy.
A condition assessment has an explicit technical approach and is one of many influential aspects playing
a role in supporting property management. Aspects like safety, compliance with legislation, quality of use,
social quality, location, flexibility, breakdown risks may play a significant role too, but are all excluded
from the scope of this Technical Specification. Condition assessment is just one aspect for evaluating and
supporting organization policy. The organization policy therefore defines how and where the condition
class is relevant within the set maintenance plans.
This document has the following objectives:
• to deliver uniformity in the condition assessment of assets, systems and elements, expressed by a
condition class. The condition class is a measure of the degradation of the asset and a rating based
on objectively registered defects;
• to deliver unity and insight into the sorts of defects. Each defect is weighted against the parameters
severity, level of degradation and extent;
• to deliver fact-based input data to enable a priority proposition for maintenance action when
weighted against all relevant aspects;
• to deliver a method to set out maintenance plans and evaluating the functioning of maintenance
management on different organization levels.
1 Scope
This document describes a method to assess the physical condition of all types of immobile constructed
assets in a uniform and objective way. The assessment results in a condition class, which expresses the
technical state of maintenance of an asset at any certain moment in time on a six-point scale. It therefore
can represent either the deterioration of an asset or part thereof or the physical condition at the time of
commissioning. By repeating the assessment at regular intervals, it is possible to monitor the degradation
of the asset over time.
This document offers a uniform, objective and reproducible method with traceable results. It describes
how to achieve the condition class, based on non-destructive observation of defects off any asset or part
thereof by using a predefined breakdown structure. The appropriate breakdown structure of an asset is
dependent upon the asset concerned and guidance for defining a uniform breakdown structure is given
in Annex C.
Figure 1 — Applicability of condition assessment
This document as part of an Asset Management plan can be applied to:
a) evaluate the actual physical condition of a single asset or portfolio of assets;
b) establish a maintenance strategy based on the actual condition of the assets;
c) support financial planning;
d) encourage and support communication about the actual condition versus the desired condition.
2 Normative references
There are no normative references in this document
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 https://www.iso.org/obp
3.1
asset owner
any organization or representative thereof that is legally entitled party of an asset portfolio
3.2
breakdown structure
hierarchical decomposition of an asset for assessment purposes
Note 1 to entry: The asset breakdown structure is defined so as to enable assessment and recording of results to be
performed for logical and easily identified elements.
3.3
component
constituent part of a system which cannot be physically divided into smaller parts without losing its
particular function
[SOURCE: IEV 151-11-21, modified – Word "device" replaced by "system"]
3.4
condition
physical state of an object at a particular time compared to the time of commissioning
[SOURCE: EN 16096:2012, 3.1, modified]
3.5
condition assessment
objective method for determining the physical condition of a constructed asset or a part of it
Note 1 to entry: The condition assessment is based on a survey of defects. In specifying the condition class, three
defect parameters are used; severity, level of degradation and extent.
3.6
condition class
categorisation of item condition at a defined point in time
Note 1 to entry: Condition class is the result of three parameters of the defect(s): severity, level of degradation and
extent.
Note 2 to entry: An identified level of degradation may continue to deteriorate or remain stable with time.
3.7
condition survey
activity, performed either manually or automatically, intended to measure the characteristics and
parameters of the physical actual state of an item
3.8
correction factor
formula which gives the weight of influence according the components in relation with a subsystem
3.9
defect
any degradation of the part compared to the physical condition at the time of commissioning
Note 1 to entry: The definition is different to the one given in ISO 9000
3.10
degradation
detrimental change in physical condition of an item
Note 1 to entry: Degradation may lead to a failure.
Note 2 to entry: Degradation considers also changes in the appearance.
Note 3 to entry: Detrimental change is associated with age, use or external causes on an item and may be progressive
or static.
3.11
element
level of sub-division of an item hierarchy of which condition is to be assessed
Note 1 to entry: An item hierarchy is generally defined with the view of achieving a given objective, for example by
performing a definite function.
Note 2 to entry: Components of an item hierarchy may be natural or man-made material objects, as well as modes
of thinking and the results thereof (for example forms of organization, mathematical methods and programming
languages).
Note 3 to entry: The item hierarchy is considered to be separated from the environment and the other external
systems by an imaginary surface which cuts the links between them and the system.
Note 4 to entry: The term “item hierarchy” should be qualified when it is not clear from the context to what it refers,
for example control item hierarchy, calorimetric item hierarchy, item hierarchy of units, transmission item
hierarchy.”
3.12
extent of defect
fraction affected by the defect in relation to the full element
Note 1 to entry: The extent may be expressed as a physical fraction of the element under assessment or as the
fraction of the element value compared to that at commissioning.
3.13
immobile constructed asset
item that is constructed or results from construction operations that during its primary use for its
functioning is directly or indirectly fixed to the ground
EXAMPLE Railways are included, train is excluded
3.14
indenture level
level of sub-division within an item hierarchy
EXAMPLE Bridge, superstructure, deck, deck beam.
Note 1 to entry: From the maintenance perspective, the indenture level depends on the complexity of the item's
construction, the accessibility of sub items, skill level of maintenance personnel, test equipment facilities, and safety
considerations.
[SOURCE: EN 13306:2017, 3.7, modified – Examples are tailored to the scope of this standard.]
3.15
item
part, component, device, subsystem, functional unit, equipment or system that can be individually
described and considered
Note 1 to entry: A number of items e.g. a population of items, or a sample, may itself be considered as an item.
Note 2 to entry: An item may consist of hardware, software or both.
Note 3 to entry: Software consists of programs, procedures, rules, documentati
...
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