SIST EN 13084-9:2022
(Main)Free-standing chimneys - Part 9: Lifetime management - Monitoring, inspection, maintenance, remedial and reporting; Operations and actions required
Free-standing chimneys - Part 9: Lifetime management - Monitoring, inspection, maintenance, remedial and reporting; Operations and actions required
This document deals with the general requirements and the basic performance inspection, maintenance and reporting criteria for the Lifetime management, Monitoring, Inspection, Maintenance, Cleaning, Repair and Remedial work including the Reporting; Operations and Actions Required of all types of structurally independent chimneys. This document applies to any windshield, single stack, tower, mast and liners covered by the EN 13084 series.
The Lifetime management takes into account the original structural and operating design of the structurally independent chimneys under operational conditions and other actions to verify that mechanical resistance and stability and safety in use are continued at the designed for level as expected and/or adapted to changes in the operational requirements of the structure and/or its environment.
NOTE In other parts of the EN 13084 series, rules will be given where chimney products in accordance with EN 1443 (and the relating product standards) may be used in structurally independent chimneys.
Freistehende Industrieschornsteine - Teil 9: Lebensdauermanagement - Überwachung, Inspektion, Wartung, Sanierungsmaßnahmen und Dokumentation; Notwendige Maßnahmen und Verfahren
Dieses Dokument behandelt die allgemeinen Anforderungen und die grundlegenden Kriterien für die Inspektion, Wartung und Berichterstattung über Lebensdauermanagement, Überwachung, Inspektion, Wartung, Reinigung, Reparatur und Sanierung, einschließlich erforderlicher Dokumentation, Maßnahmen und Verfahren für alle Arten von freistehenden Schornsteinen. Dieses Dokument gilt für alle Tragrohre, Einzelschornsteine, Türme, Maste und Innenrohre, die von der Reihe EN 13084 behandelt werden.
Das Lebensdauermanagement berücksichtigt die ursprüngliche bautechnische und betriebliche Auslegung der freistehenden Schornsteine unter Betriebsbedingungen und sonstigen Einwirkungen, um nachzuprüfen, dass die mechanische Tragfähigkeit, die Stabilität und die Nutzungssicherheit fortlaufend auf dem geplanten Niveau gehalten werden und/oder an Änderungen der betrieblichen Anforderungen an das Tragwerk und/oder dessen Umgebung angepasst werden.
ANMERKUNG In anderen Teilen der Normenreihe EN 13084 werden Regeln für die Verwendung von Schornsteinprodukten in Übereinstimmung mit EN 1443 (und den damit verbundenen Produktnormen) in freistehenden Schornsteinen angegeben.
Cheminées autoportantes - Partie 9 : Gestion du cycle de vie - Surveillance, inspection, maintenance, mesures correctives et établissement de rapports ; opérations et actions requises
Le présent document traite des exigences générales et des critères de performances de base relatifs à l’inspection, la maintenance et l’établissement de rapports pour la gestion du cycle de vie, la surveillance, l’inspection, la maintenance, les travaux de réparation et correctifs incluant l’établissement de rapports ; les opérations et actions requises de tous types de cheminées autoportantes. Le présent document s’applique à tous les brise-vents, cheminées monoconduit, tours, mâts et conduits intérieurs couverts par la série de normes EN 13084.
La gestion du cycle de vie prend en compte la conception structurelle et opérationnelle d’origine des cheminées autoportantes dans des conditions opérationnelles ainsi que d’autres actions pour vérifier que la résistance mécanique, la stabilité et la sécurité en cours d’utilisation correspondent en permanence au niveau de conception prévu et/ou adapté aux variations des exigences opérationnelles de la structure et/ou de son environnement.
NOTE Dans d’autres parties de la série de normes EN 13084, des règles seront données dans lesquelles des produits de conduits de fumée conformément à l’EN 1443 (et aux normes de produits associées) peuvent être utilisés dans des cheminées autoportantes.
Prostostoječi dimniki - 9. del: Upravljanje življenjske dobe - Nadzorovanje, inšpekcijski pregled, vzdrževanje, sanacijski ukrepi in poročanje - Zahtevani ukrepi in postopki
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13084-9:2022
01-december-2022
Prostostoječi dimniki - 9. del: Upravljanje življenjske dobe - Nadzorovanje,
inšpekcijski pregled, vzdrževanje, sanacijski ukrepi in poročanje - Zahtevani
ukrepi in postopki
Free-standing chimneys - Part 9: Lifetime management - Monitoring, inspection,
maintenance, remedial and reporting; Operations and actions required
Freistehende Industrieschornsteine - Teil 9: Lebensdauermanagement - Überwachung,
Inspektion, Wartung, Sanierungsmaßnahmen und Dokumentation; Notwendige
Maßnahmen und Verfahren
Cheminées autoportantes - Partie 9 : Gestion du cycle de vie - Surveillance, inspection,
maintenance, mesures correctives et établissement de rapports ; opérations et actions
requises
Ta slovenski standard je istoveten z: EN 13084-9:2022
ICS:
13.020.60 Življenjski ciklusi izdelkov Product life-cycles
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
SIST EN 13084-9:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13084-9:2022
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SIST EN 13084-9:2022
EN 13084-9
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 91.060.40
English Version
Free-standing chimneys - Part 9: Lifetime management -
Monitoring, inspection, maintenance, remedial and
reporting; Operations and actions required
Cheminées autoportantes - Partie 9 : Gestion du cycle Freistehende Industrieschornsteine - Teil 9:
de vie - Surveillance, inspection, maintenance, mesures Lebensdauermanagement - Überwachung, Inspektion,
correctives et établissement de rapports ; opérations et Wartung, Sanierungsmaßnahmen und Dokumentation;
actions requises Notwendige Maßnahmen und Verfahren
This European Standard was approved by CEN on 26 September 2022.
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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13084-9:2022 E
worldwide for CEN national Members.
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SIST EN 13084-9:2022
EN 13084-9:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Maintenance and inspection . 7
5 Repair works . 22
6 Decommissioning and demolition . 24
Annex A (informative) Guidelines for provisions concerning the use of work equipment provided
for temporary work at a height . 28
A.1 General. 28
A.2 Specific provisions regarding the use of ladders . 29
A.3 Specific provisions regarding the use of scaffolding . 29
A.4 Specific provisions regarding the use of rope access and positioning techniques . 30
A.5 What to consider when planning work at height . 31
Annex B (informative) Examples of damages with associated level of criticality . 32
Bibliography . 34
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SIST EN 13084-9:2022
EN 13084-9:2022 (E)
European foreword
This document (EN 13084-9:2022) has been prepared by Technical Committee CEN/TC 297 “Free
standing industrial chimneys”, 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 April 2023, and conflicting national standards shall be
withdrawn at the latest by April 2023.
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.
This document is Part 9 in a series of standards and as such is not a stand-alone document. The
requirements in Parts 1 to 8 of this series are integral to Part 9.
EN 13084, Free-standing chimneys consists of the following parts:
— Part 1: General requirements
— Part 2: Concrete chimneys
— Part 4: Brick liners — Design and execution
— Part 5: Material for brick liners — Product specifications
— Part 6: Steel liners — Design and execution
— Part 7: Product specifications of cylindrical steel fabrications for use in single wall steel chimneys and
steel liners
— Part 8: Design and execution of mast construction with satellite components
— Part 9: Life-Time Management — Monitoring, Inspection, Maintenance, Remedial and Reporting;
operations and actions
The following documents additionally apply:
— EN 1993-3-1, Eurocode 3 — Design of steel structures — Part 3-1: Towers, masts and chimneys —
Towers and masts
— EN 1993-3-2, Eurocode 3 — Design of steel structures — Part 3-2: Towers, masts and chimneys —
Chimneys
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Türkiye and the United
Kingdom.
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EN 13084-9:2022 (E)
Introduction
EN 1990 indicates as a principle that to ensure adequate durability of the structure, several factors should
be considered including the expected maintenance during the period of project use.
The same standard also states as a principle that proper inspections and maintenance according to the
procedures specified in the project documentation should be stated to ensure the required level of
reliability.
EN 13084-1 requires in Clause 7 that the chimneys be checked at regular intervals by an expert. The
interval should not exceed two years between any checks. A written report should include
recommendations for maintenance and repair.
When planning new-build or refurbishment projects, architects, designers, manufacturers and
contractors have duties under European Directive 92/57/EEC 24th June 1992 on the implementation of
minimum safety and health requirements at constructions sites), to consider the need for work to be
carried out at height over the lifespan of a building, e.g. to clean, maintain and repair it, and they should
design out the need to work at height if possible.
It is therefore necessary to specify the various operations to be carried out both in inspection and
maintenance to clarify the various points of intervention to prolong the duration of use and reliability of
the structure. This document describes these operations according to the summary of contents on page
2.
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EN 13084-9:2022 (E)
1 Scope
This document covers the general requirements and the basic criteria for lifetime management of all
kinds of free-standing chimneys, comprising monitoring, inspection, maintenance, repair, reporting, and
necessary actions and procedures. This document applies to any windshield, single stack, tower, mast
and liner covered by the EN 13084 series.
The Lifetime management considers the original structural and operating design of the structurally
independent chimneys under operational conditions and other actions to verify that mechanical
resistance and stability and safety in use are continued at the designed for level as expected and/or
adapted to changes in the operational requirements of the structure and/or its environment.
NOTE In other parts of the EN 13084 series, rules will be given where chimney products in accordance with
EN 1443 (and the relating product standards) can be used in structurally independent chimneys.
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.
EN 365, Personal protective equipment against falls from a height — General requirements for instructions
for use, maintenance, periodic examination, repair, marking and packaging
EN 1856-1, Chimneys — Requirements for metal chimneys — Part 1: System chimney products
EN 1990, Eurocode — Basis of structural design
EN 1993-1-11, Eurocode 3 — Design of steel structures — Part 1-11: Design of structures with tension
components
EN 13084-1, Free-standing chimneys — Part 1: General requirements
EN 62305 (all parts), Protection against lightning
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13084-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
condition monitoring
visual inspection, on a regular basis, of the structure and its components to identify any significant change
3.2
criticality level
index of the severity of a failure or a fault combined with the probability or frequency of its occurrence
defined with three possible values: high, medium, and low
3.3
design working life
period for which a structure is expected to be used for its intended purpose to ensure durability against
environmental actions and fatigue
3.4
expert
person who has scientific and/or technical theoretical and practical knowledge in a field of activity
validated by approved education certificates and / or as well as in-depth knowledge and practical skills
validated by a recognized experience of a professional activity of several years in the field of activity
concerned
3.5
general inspection
assessment of the complete structure by an expert to ensure that it is still in serviceable condition or to
indicate necessary maintenance or repairs
3.6
maintenance operations
combination of all technical, administrative, and managerial actions during the life cycle of an item
intended to retain it in, or restore it to, a state in which it can perform the required function
3.7
repair operations
physical actions to be taken or taken to restore and or maintain the required function of a faulty item
3.8
windshield
structural independent shell designed for load bearing purposes and to protect and support the liner(s),
flue from wind actions
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4 Maintenance and inspection
4.1 General structure of the maintenance operations
Eurocode EN 1990 requires that the structures shall be designed such that deterioration over its design
working life does not impair the performance of the structure below that intended, having due regard to
its environment and the anticipated level of maintenance. The following should also be considered:
— the intended or foreseeable use of the structure (chemical and thermal loads caused by the conveying
of flue/exhaust gases, the operating of the installation - on-/off operation, bypass-operation, wet
stack -, foreseeable and not foreseeable operational interruptions and shutdowns, etc…;
— the required design criteria;
— the expected environmental conditions;
— the composition, properties and performance of the materials and products;
— the properties of soil;
— the choice of the structural system;
— the shape members and the structural detailing;
— the quality of workmanship and the level of control;
— the protective measures;
— the intended maintenance during the design working life.
For all types of structurally independent chimneys structures, the maintenance operations shall be done
according to the following steps to preserve durability and performances:
— maintenance required by the chimney manufacturer (see 4.2);
— survey and maintenance to be done by the owner/operator (see 4.3);
— general inspection of the installation (see 4.4).
4.2 Maintenance and inspection plan by the manufacturer
As required by EN 1990, the manufacturer should include the inspection and maintenance plans in the
project documentation (Operating and Maintenance manual) delivered at the commissioning and
handover phase of a new project, to ensure the required level of reliability as per the structure and plant
design and calculations.
The manufacturer’s maintenance and inspection plan shall at least include all relevant points of 4.3 for
chimney and equipment and a full set of the structural design calculations and thermal fluid design
calculations.
If necessary, depending on the project specifications, manufacturers can provide more restrictive
recommendations for some or all parts and equipment.
If no maintenance plan was provided by the manufacturer, such a document adapted to the specifications
of the project can be drafted by a chimney expert.
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4.3 Maintenance and inspection plan by the owner/operator
4.3.1 Maintenance operations
4.3.1.1 General
It is the responsibility of the owner to maintain the installation in a good state. To guarantee the good and
safe operation of the installation and to spot any deterioration which could lead to a fault, the owner shall
ensure all the maintenance and inspection operations detailed in the Operating and Maintenance manual
provided by the manufacturer.
4.3.1.2 Introduction
Without any other recommendations, the following maintenance operations shall be carried out.
4.3.1.3 Safety valves
If the installation includes explosion or implosion relief valves, these safety systems shall be dismantled
and sent back to the manufacturer at least once a year to be recalibrated and reconditioned.
NOTE A spare new set can be kept on site to allow for continuous use of the plant.
4.3.1.4 Cleaning operations
The following cleaning operations shall be carried out:
— cleaning of base drains;
— cleaning of condensate drain-pipes;
— cleaning of rainwater drain-pipes;
— sweeping of flue liners and connecting flue pipes with appropriate brushes, plastic-based for
stainless steel flues and metallic-based for mild steel flues;
— if a silencer is installed, cleaning of the condensate pipes and the baffles if applicable.
4.3.1.5 Coating system
To achieve the stated coat life span and increase the life span of the finish, it is necessary to provide on-
going site maintenance / repair and/or overcoating of the paint finish. This operation shall be carried out
as per the paint manufacturer’s recommendations and requirements for site application with the
objective to provide the same level of protection (where possible taking into full account the conditions
of on-site application and environment) in durability and time as per the original factory finished coating
specification.
For corrosion protection of steel structures by protective paint systems, EN ISO 12944-8:2017 provides
requirements on maintenance works.
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4.3.2 Condition Monitoring
4.3.2.1 General
Regular condition monitoring is required and should extend to all visually and audibly recognizable
changes to the structure and components.
This inspection is carried out from ground level and/or-by entering the chimney’s accessible space if any.
The chimney shall be inspected by using all available fixed ladders and platforms. Binoculars, cameras
with long-distance lenses and drones with cameras can be appropriate equipment to inspect all the
surfaces of the chimneys.
Visual inspection of the following elements shall be carried out.
4.3.2.2 Windshield and liner(s)
As a minimum, the following points shall be checked on the windshield and liner(s):
— leaning, sinking and loosening of guy wires;
— circular oscillation of the chimney of large amplitude even under low wind speeds;
— cracks, splits, perforations, impacts, and any structural damage;
— loosening and oxidation of nuts and bolts (anchorage, joints, base plate, guy wires);
— jamming of inspection doors and measuring plugs;
— piece of material on the surrounding grounds for a brick or concrete chimney;
— staining, dripping, corrosion marks;
— colouring, stains or runs of condensates on the windshield or liner(s);
— large amount of condensation inside the windshield.
4.3.2.3 Thermal insulation (Liner and/or windshield)
As a minimum, the following points shall be checked on thermal insulations:
— deterioration of the insulation material;
— deterioration of the cladding if any like hole, bump, twisted or missing elements;
— trace of liquid runoff.
An Infrared image examination of hot chimneys could be used to identify hot spots and thermal bridges
where insulation’s thermal properties are altered or where the insulating function is not given any longer.
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4.3.2.4 Equipment and accessories
As a minimum, the following points shall be checked on equipment and accessories:
— presence of loose elements (platform plates or gratings, ladder parts, cladding plates, lightning
protection, cables, etc.);
— discontinuity in the lightning protection system;
— deterioration of the daytime or night-time aircraft warning systems (lights or painting);
— in silencers, damage to the absorbing material or its casing (tear), obstruction of condensate pipes,
issue with general design (impact, perforation, condensate staining);
— physical deterioration/burst or any trace of leakage on the damper if any.
It is the responsibility of the owner/operator to make sure that any additional local requirements or
manufacturer requirements in terms of frequency and/or content are taken on board.
4.3.3 Frequency (Intervals)
Maintenance operations and condition monitoring shall be carried out no later than 3 months after the
chimney / exhaust has been commissioned and put into operation to detect any potential troubles on the
plant.
Afterwards, the maintenance operations and condition monitoring shall be performed every 6 months or
before restart after a long-term shutdown, or after any extraordinary occurrences like heavy storms,
unusually heavy icing.
The frequency may be reduced according to the Operating and Maintenance manual provided by the
manufacturer.
For specific cases where installations work continuously for periods longer than six months, the
maintenance and inspection of the external parts of the chimney shall be carried out at the normal
frequency. The internal parts of flue liners, connecting ducts and specific equipment shall be inspected
each time the installation is stopped.
4.3.4 Record and repair actions if necessary
The maintenance operations and condition monitoring shall be recorded in a report which shall be
attached to the operating and maintenance manual for future record reviews.
Any anomaly spotted during the condition monitoring shall be reported to the chimney manufacturer or
to an expert without delay. The further course of action will then be advised by the chimney manufacturer
or by the expert according to the risks presented by the installation.
4.4 General Inspection by a chimney expert
4.4.1 General
The general inspection will assess the performance and the state of the installation as a whole, according
to the design operating requirements of the chimney(s) and plant(s).
The objective is to ascertain that the chimney, lining and components are all still in serviceable condition
and fulfilling their designed requirements and tasks and to indicate if further actions like maintenance or
repair operations are necessary.
This inspection is to be entrusted to an expert who can also assess the structural conditions of the
structures.
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EN 13084-9:2022 (E)
4.4.2 Frequency (intervals)
A first general inspection shall be carried out no later than 3 to 12 months after the chimney / exhaust
has been commissioned and put into operation. This time frame starts at chimney erection for chimneys
with dampers and/or pre-stressed bolted connection flange joints.
At a period as recommended in the operating and maintenance manuals of the manufacturer and at a
minimum of every 2 years, the installation shall be inspected by a chimney expert.
NOTE National rules could impose different frequency for the inspection of the chimney or part of the chimney.
For specific cases where installations work continuously for longer than two years, the inspection shall
be limited to a partial inspection to the parts of the chimney with safe access. The operating data to
determine the degree of chemical stress should be checked. Each time the plant is stopped, a full general
inspection shall be performed.
Additionally, a general inspection shall be planned at the expected end date of the chimney’s, exhaust’s
operational lifetime. During this end date inspection, the expert can give his agreement to prolong/extend
the life expectancy of the chimney without any additional work or recommend repair and renovation
work that would enable the expected lifespan of the chimney, exhaust to be extended.
A warrantee issue shall require the manufacturer/supplier to carry out an inspection report and
corrective actions as required in accordance with the warrantee specification.
Depending on the conditions of use and on the potential risk for the structure of the stack and its
environment, the expert or the manufacturer of the chimney can recommend a general inspection
frequency shorter than the normal 2 years interval based on the following criteria:
— type of fuel;
— intermittent or continuous operation;
— thermal and chemical attacks;
— thermal shocks, due to sudden change of temperature during operation and/or too quick start-up or
shutdown.
4.4.3 Stages
4.4.3.1 General
Inspection and maintenance shall consist of the following stages.
4.4.3.2 Preparation
Check of the actual versus design operating conditions of the chimney, lining and equipment in the project
documentation.
Analysis of the records of maintenances and inspections operations, repairs and modification operations,
and previous general inspection reports.
Identification of particularly vulnerable zones.
Determination of the necessary resources for the visual inspection, if necessary supplemented by
equipment for measurements and sampling.
Analysis of the access possibilities considering the operating situation, if necessary, organization of
auxiliary means such as crane basket, inspection platform, rope access.
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EN 13084-9:2022 (E)
4.4.3.3 Execution
As close as possible visual inspection.
Support of visual inspection by use of opto-electrical aids such as thermal cameras, remote-controlled
camera systems.
Taking of material samples, if its necessity has been identified during the preparation for inspection and
agreed with the operator.
Carrying out of measurements (e.g. material thickness, strength, etc…) if their necessity has been
identified during the preparation for inspection and agreed with operator.
4.4.3.4 Documents for the report
The following documents shall be prepared for the report:
— general impression,
— analysis of visual observations,
— analysis of laboratory tests,
— analysis of measured values,
— evaluation of the condition development by comparison with previous inspection reports,
— determination of the criticality level of the detected defects,
— recommendation of further action in terms of scope and timing of next inspection, remediation of
deficiencies, repair measures.
For detailed description of the report, see 4.4.9.
4.4.4 Windshields
4.4.4.1 General
The external and the internal (if possible/accessible) condition of windshields of all types and their
components shall be inspected as detailed here under. In addition to the requirements of 4.3.2.2 and
4.3.2.3, the following points shall be included in the process as a minimum:
— carry out close visual examination (as planned in the preparation phase) over the complete surface
of the external face of the shell. Where / when necessary, carry out an ultra-sonic survey of chimney
shell in sufficient detail to allow any significant loss of section to be detected;
— examine the functionality and condition of penetrations such as flue gas inlets;
— examine the functionality and condition of ventilation and inspection openings, revision accesses;
— examine and inspect all fixed safety and access equipment, e.g. fall arrest system, ladders, platforms,
handrails, nesting boxes, aircraft warning lights, measuring equipment, etc;
— examine any installed lightning protection system for compliance with current standards and carry
out electrical tests for continuity and resistance to earth.
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4.4.4.2 Specific provisions for steel chimneys
It is an important requirement that the integrity and thickness of the structural shell and all structural
components are determined and checked against the original manufactured design and the built
thickness; one acceptable method for doing so would be to use ultrasonic testing.
The internal and external surface of steel chimneys shall be inspected, for large diameter preferably by
close examination from a bosun’s chair or similar means of support access and/or a CCTV camera
inspection for smaller diameter chimneys and liners, to ascertain that the structural shell, the chimney
and the lining are still in serviceable condition and fulfilling design requirements to an acceptable safe
level of criticality.
The base plate retaining bolts and their protective cover shall be examined: if necessary, perform an
ultrasonic examination of the retaining bolts securing the structural duct to the foundation / building to
determine the extent of deterioration / corrosion.
Inspection of all joints and applied torque loadings on flanges: their mechanical fixings and torque
requirements will be determined by the expert carrying out the inspection, to the load levels as defined
by the original designer. When necessary, r
...
SLOVENSKI STANDARD
oSIST prEN 13084-9:2021
01-junij-2021
Prostostoječi dimniki - 9. del: Upravljanje življenjske dobe - Nadzorovanje,
inšpekcijski pregled, vzdrževanje, sanacijski ukrepi in poročanje - Zahtevani
ukrepi in postopki
Free-standing chimneys - Part 9: Lifetime management - Monitoring, inspection,
maintenance, remedial and reporting - Operations and actions required
Freistehende Industrieschornsteine - Teil 9: Lebensdauermanagement - Überwachung,
Inspektion, Wartung, Sanierungsmaßnahmen und Dokumentation; Erforderliche
Maßnahmen und Verfahren
Cheminées autoportantes - Partie 9 : Gestion du cycle de vie - Surveillance, inspection,
maintenance, mesures correctives et établissement de rapports ; opérations et actions
requises
Ta slovenski standard je istoveten z: prEN 13084-9
ICS:
13.020.60 Življenjski ciklusi izdelkov Product life-cycles
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
oSIST prEN 13084-9:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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DRAFT
EUROPEAN STANDARD
prEN 13084-9
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 91.060.40
English Version
Free-standing chimneys - Part 9: Lifetime management -
Monitoring, inspection, maintenance, remedial and
reporting; Operations and actions required
Cheminées autoportantes - Partie 9 : Gestion du cycle Freistehende Industrieschornsteine - Teil 9:
de vie - Surveillance, inspection, maintenance, mesures Lebensdauermanagement - Überwachung, Inspektion,
correctives et établissement de rapports ; opérations et Wartung, Sanierungsmaßnahmen und Dokumentation;
actions requises Erforderliche Maßnahmen und Verfahren
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 297.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13084-9:2021 E
worldwide for CEN national Members.
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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Maintenance and inspection . 7
4.1 General structure of the maintenance operations . 7
4.2 Maintenance and inspection plan by the manufacturer . 7
4.3 Maintenance and inspection plan by the owner/operator . 8
4.4 General Inspection . 10
5 Repair works . 19
5.1 General. 19
5.2 The competence of the company carrying out the repair works. 20
5.3 Result expected from repair works . 20
5.4 Description and preparation of repair works . 20
5.5 Execution of repair works and security . 20
5.6 Record of works completed, and results obtained . 22
Annex A (informative) Provisions concerning the use of work equipment provided for
temporary work at a height . 23
Annex B (informative) Examples of damages with associated level of criticality . 27
Bibliography . 28
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European foreword
This document (prEN 13084-9:2021) has been prepared by Technical Committee CEN/TC 297
“Free-standing industrial chimneys”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document is Part 9 in a series of standards and as such is not a stand-alone document. The
requirements in Parts 1 to 8 of this series are integral to Part 9.
EN 13084, Free-standing chimneys consists of the following parts:
— Part 1: General requirements
— Part 2: Concrete chimneys
— Part 4: Brick liners — Design and execution
— Part 5: Material for brick liners — Product specifications
— Part 6: Steel liners — Design and execution
— Part 7: Product specifications of cylindrical steel fabrications for use in single wall steel chimneys and
steel liners
— Part 8: Design and execution of mast construction with satellite components
— Part 9: Life-Time Management — Monitoring, Inspection, Maintenance, Remedial and Reporting;
operations and actions
The following documents additionally apply:
— EN 1993-3-1, Eurocode 3 — Design of steel structures — Part 3-1: Towers, masts and chimneys —
Towers and masts
— EN 1993-3-2, Eurocode 3 — Design of steel structures — Part 3-2: Towers, masts and chimneys —
Chimneys
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Introduction
The standard EN 1990 indicates as a principle that in order to ensure adequate durability of the
structure, several factors should be taken into account including the expected maintenance during the
period of project use.
The same standard also states as a principle that proper inspections and maintenance according to the
procedures specified in the project documentation should be stated to insure the required level of
reliability.
The standard EN 13084-1 requires in Clause 7 that the chimneys be checked at regular intervals by an
expert. The interval should not exceed two years between any checks. A written report should include
recommendations for maintenance and repair.
When planning new-build or refurbishment projects, architects, designers, manufacturers and
th
contractors have duties under European Directive 92/57/EEC 24 June 1992 on the implementation of
minimum safety and health requirements at constructions sites (The Construction Design and
Management Regulations), to consider the need for work to be carried out at height over the lifespan of
a building, e.g. to clean, maintain and repair it, and they should design out the need to work at height if
possible.
It is therefore necessary to specify the various operations to be carried out both in inspection and
maintenance so as to clarify the various points of intervention in order to prolong the duration of use
and reliability of the structure. The summary of this standard is as detailed in contents below.
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1 Scope
This document deals with the general requirements and the basic performance inspection, maintenance
and reporting criteria for the Lifetime management, Monitoring, Inspection, Maintenance, Cleaning,
Repair and Remedial work including the Reporting; Operations and Actions Required of all types of
structurally independent chimneys. This document applies to any windshield, single stack, tower, mast
and liners covered by the EN 13084 series.
The Lifetime management takes into account the original structural and operating design of the
structurally independent chimneys under operational conditions and other actions to verify that
mechanical resistance and stability and safety in use are continued at the designed for level as expected
and/or adapted to changes in the operational requirements of the structure and/or its environment.
NOTE In other parts of the EN 13084 series, rules will be given where chimney products in accordance with
EN 1443 (and the relating product standards) may be used in structurally independent chimneys.
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.
EN 365, Personal protective equipment against falls from a height - General requirements for instructions
for use, maintenance, periodic examination, repair, marking and packaging
EN 1990, Eurocode - Basis of structural and geotechnical design
EN 1993-1-11, Eurocode 3 - Design of steel structures - Part 1-11: Design of structures with tension
components
EN 62305-1, Protection against lightning - Part 1: General principles
EN 62305-2, Protection against lightning - Part 2: Risk management
EN 62305-3, Protection against lightning - Part 3: Physical damage to structures and life hazard
EN 62305-4, Protection against lightning - Part 4: Electrical and electronic systems within structures
EN ISO 14122-4:2016, Safety of machinery - Permanent means of access to machinery - Part 4: Fixed
ladders (ISO 14122-4:2016)
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
accessible space
space between windshield and liner that is designed for entry by personnel
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3.2
condition monitoring
visual inspection, on a regular basis, of the structure and its components in order to identify any
significant change
3.3
criticality level
priority, quality and/or state of the required maintenance of the chimney and of all the components of
the flue ducts as a hierarchical level of importance defined as three different categories of criticality
(high, medium, and low)
3.4
design working life
period for which a structure is expected to be used for its intended purpose to ensure durability against
environmental actions and fatigue
3.5
expert
person who has scientific and technical theoretical knowledge in a field of activity validated by
approved education certificates and / or as well as in-depth knowledge and practical skills validated by
a recognized experience of a professional activity of several years in the field of activity concerned
3.6
general inspection
assessment of the complete structure by an expert to ensure that it is still in serviceable condition or to
indicate necessary maintenance or repairs
3.7
lining system (lining)
total system, if any, which separates the exhaust or flue gases from the windshield, comprising a liner
and its supports, the space between liner and windshield and insulation, where existing
3.8
liner
structural or non-structural membrane of the lining system
3.9
maintenance operations
combination of all planned technical, administrative and managerial actions during the life cycle of an
item intended to retain it in, or restore it to, a state in which it can perform the required function
3.10
repair operations
operations carried out to restore or preserve the function of an element that are not part of the planned
and implemented maintenance
3.11
windshield
structural independent shell designed for load bearing purposes and to protect the flue from wind
actions
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4 Maintenance and inspection
4.1 General structure of the maintenance operations
Eurocode EN 1990 requires that the structures shall be designed such that deterioration over its design
working life does not impair the performance of the structure below that intended, having due regard to
its environment and the anticipated level of maintenance. The following should be taken into account:
— the intended or foreseeable use of the structure;
— the required design criteria;
— the expected environmental conditions;
— the composition, properties and performance of the materials and products;
— the properties of soil;
— the choice of the structural system;
— the shape members and the structural detailing;
— the quality of workmanship and the level of control;
— the particular protective measures;
— the intended maintenance during the design working life.
For all types of structurally independent chimneys structures, the maintenance operations shall be
done according to the following steps to preserve durability and performances:
— maintenance required by the chimney manufacturer (see 4.2);
— survey and maintenance to be done by the owner/operator (see 4.3);
— general inspection of the installation (see 4.4).
4.2 Maintenance and inspection plan by the manufacturer
As required by EN 1990, the manufacturer should include the inspection and maintenance plans in the
project documentation (Operating and Maintenance manual) delivered at the commissioning and
handover phase of a new project, in order to insure the required level of reliability as per the structure
and plant design and calculations.
The manufacturers maintenance and inspection plan shall at least include all relevant points of 4.3 for
chimney and equipment.
If necessary, depending on the project specifications, manufacturers can provide more restrictive
recommendations for some or all parts and equipment.
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4.3 Maintenance and inspection plan by the owner/operator
4.3.1 General
It is the responsibility of the owner to maintain the installation in a good state. To guarantee the good
operation of the installation and to spot any deterioration which could lead to a fault, the owner shall
ensure all the maintenance and inspection operations detailed in the Operating and Maintenance
manual provided by the manufacturer.
Without any other recommendations, the following operations shall be carried out:
— regular maintenance operations listed under 4.3.2;
— regular monitoring conditions listed under 4.3.3.
The maintenance operations and inspection plan shall be fulfilled by the owner/operator himself or by
a third-party company competent for this type of work.
4.3.2 Maintenance operations
4.3.2.1 General
Without any other recommendations, the following maintenance operations shall be carried out.
4.3.2.2 Safety valves
If the installation includes explosion or implosion relief valves, these safety systems shall be dismantled
and sent back to the manufacturer at least once a year in order to be recalibrated and reconditioned
(note. a spare new set can be kept on site to allow for continuous use of the plant).
4.3.2.3 Cleaning operations
The following cleaning operations shall be carried out:
— cleaning of base drains;
— cleaning of condensate drain-pipes;
— cleaning of rainwater drain-pipes;
— sweeping of flue liners and connecting flue pipes with appropriate brushes, plastic-based for
stainless steel flues and metallic-based for mild steel flues;
— if a silencer is installed, cleaning of the condensate pipes and the baffles if applicable.
4.3.2.4 Coating system
To achieve the stated coat life span and increase the life span of the finish, it is necessary to provide on-
going site maintenance / repair and/or overcoating of the paint finish. This operation shall be carried
out as per the paint manufacturers recommendations and requirements for site application with the
objective to provide the same level of protection (where possible taking into full account the conditions
of on-site application and environment) in durability and time as per the original factory finished
coating specification.
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4.3.3 Condition Monitoring
4.3.3.1 General
Regular condition monitoring is required and should extend to all visually recognizable changes to the
structure and components.
This inspection is carried out from ground level and/or into the chimney’ accessible space if any. For
installations higher than 20 m, the use of appropriate access and minimum binoculars is required for a
correct monitoring.
Visual inspection of the following elements shall be carried out.
4.3.3.2 Windshield and liner(s)
As a minimum, the following points shall be checked on the windshield and liner(s):
— leaning, sinking and loosening of guy wires;
— circular oscillation of the chimney of large amplitude even under low wind speeds;
— cracks, splits, perforations, impacts, and any structural damage;
— loosening and oxidation of nuts and bolts (anchorage, joints, base plate, guy wires);
— jamming of inspection doors and measuring plugs;
— piece of material on the surrounding grounds for a brick or concrete chimney;
— staining, dripping, corrosion marks;
— colouring, stains or runs of condensates on the windshield or liner(s);
— large amount of condensation inside the windshield.
4.3.3.3 Thermal insulation (Liner and/or windshield)
As a minimum, the following points shall be checked on thermal insulations:
— deterioration of the insulation material;
— deterioration of the cladding if any like hole, bump, twisted or missing elements;
— trace of liquid runoff.
An Infrared image examination of hot chimneys could be used to identify hot spots and thermal bridges
where insulation’ thermal properties are altered or where it has collapsed.
4.3.3.4 Equipment and accessories
As a minimum, the following points shall be checked on equipment and accessories:
— presence of loose elements (platform plates or gratings, ladder parts, cladding plates, lightning
protection, cables, etc.);
— discontinuity in the lightning protection system;
— deterioration of the day-time or night-time aircraft warning systems (lights or painting);
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— in silencers, damage to the absorbing material or its casing (tear), obstruction of condensate pipes,
issue with general design (impact, perforation, condensate staining)
— physical deterioration/burst or any trace of leakage on the damper if any.
4.3.4 Frequency (Intervals)
Maintenance operations and condition monitoring shall be carried out no later than 3 months after the
chimney / exhaust has been commissioned and put into operation in order to detect any potential
troubles on the plant.
Afterward, the maintenance operations and condition monitoring shall be performed every 6 months or
before restart after a long-term shutdown, or after any extraordinary occurrences like heavy storms,
unusually heavy icing.
The frequency may be reduced according to the Operating and Maintenance manual provided by the
manufacturer.
For specific cases where installations work continuously for longer than six months, maintenance and
inspection of the external parts of the chimney shall be carried out at the normal frequency. The
internal parts of flue liners, connecting ducts and specific equipment shall be inspected each time the
installation is stopped.
4.3.5 Record and repair actions if necessary
Records of the maintenance operations and condition monitoring shall be recorded in a report which
shall be attached to the operating and maintenance manual for future record reviews.
Any anomaly spotted during the condition monitoring shall be reported to the chimney manufacturer
or to an expert without delay. The best course of action will then be advised by the chimney
manufacturer or by the expert according to the risks presented by the installation.
4.4 General Inspection
4.4.1 General
The general inspection will assess the performance and the state of the installation as a whole,
according to the design operating requirements of the chimney(s) and plant(s).
The objective is to ascertain that the chimney, lining and components are still in serviceable condition
and fulfilling their designed requirements and tasks, or to indicate necessary maintenance or repair
operations to recover them.
This inspection is to be entrusted to an expert who can also assess the structural conditions of the
structures.
4.4.2 Frequency (intervals)
A first general inspection shall be carried out no later than 3 to 12 months after the chimney / exhaust
has been commissioned and put into operation. This delay starts at chimney erection when damper is
present at the chimney mouth.
At a period as recommended in the operating and maintenance manuals of the manufacturer and at a
minimum of every 2 years, the installation shall be inspected by a chimney expert.
For specific cases where installations work continuously for longer than two years, general inspection
shall take place each time the installation is stopped. During this period, the operating data to
determine the degree of chemical stress should be checked.
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The general inspection shall be planned at the expected end date of the chimney’s, exhaust’s operational
lifetime. During this end date inspection, the expert can propose to prolong/extend the life expectancy
of the chimney without any additional work to be carried out or propose, recommended repair and
renovation work that would enable the expected lifespan of the chimney, exhaust to be extended.
A warrantee issue shall require the manufacturer/supplier to carry out an inspection report and
corrective actions as required in accordance with the warrantee specification.
Depending on the conditions of use and on the potential risk for the structure of the stack and its
environment, the expert or the manufacturer of the chimney can recommend a general inspection
frequency shorter than the normal 2 years interval based on the following criteria:
— type of fuel;
— intermittent or continuous operation;
— thermal and chemical attacks;
— thermal shocks, due to sudden change of temperature during operation and/or too quick start-up
or shutdown.
4.4.3 General inspection for all types of chimneys
4.4.3.1 General
Inspection and maintenance shall consist of the following stages:
— consult the design operating conditions of the chimney, lining and equipment in the project
documentation;
— viewing the records of maintenances and inspections operations, repairs and modification
operations, and previous general inspection reports;
— preparing for inspection by identifying particularly vulnerable zones and determining the
resources required for measurements and the taking of samples if needed;
— analysing the data collected in a report giving;
— general impression;
— interpretation of measured values;
— conclusions from visual observations;
— conclusions from laboratory tests when required;
— estimation of the rate of ageing;
— state on the criticality level of any spotted default and indicate appropriate repair works.
The general inspection of chimney and liner can be performed by the following methods:
— use of a thermal-camera and ultra-sonic testing to avoid chimney shut down;
— use of mobile inspection platform or crane cage or rope access or a remote-control camera system
after the chimney operation is shut down.
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4.4.3.2 Windshield
Windshields and their external and internal components shall be inspected as detailed in the following
clauses. As a minimum, the following points shall be inspected:
— carry out close visual examination over the complete surface of the external face of the shell and
where / when necessary carry out an ultra-sonic survey of chimney shell in sufficient detail to
allow any significant loss of section to be detected;
— inspect all Flanged Joints and their mechanical fixings, tap flange bolts & holding down bolts with a
hammer to ‘sound’ for any evidence of cracking. When necessary, remove fixings from each flange
for microscopic examination for defects. Bolts should then be tested for ultimate tensile failure for
comparison against the required rating of the bolts;
— base plate holding down bolts and their protective cover where necessary carry out an ultra-sonic
survey of the holding down bolts securing structure stack to foundation/ building can be used to
determine the extent of any deterioration/corrosion;
— all applied torque loadings on flanges and base plate (shall be re-torqued if required to the load
levels as defined by the original designer);
— examine and inspect all fixed access equipment and fall arrest system, e.g. Ladders, Platforms,
Hand-rails, etc.
— examine any installed lightning protection system for compliance with current standards and carry
out electrical tests for continuity and resistance to earth.
The requirements in the same clauses, will also apply to inspecting and maintaining Supporting-Masts
structures.
4.4.3.3 Liner
As a minimum, the following points shall be checked:
— jamming of inspection doors and measuring plugs;
— clogging up (unusually large deposit of soot in flues and inlets);
— cracks, splits, perforations, impacts;
— pooling of water or condensates in drains at the base of the flues / blockage of the condensate
drains;
— integrity and functionality of the liner supports;
— integrity and functionality of the compensators;
— inspect all flanged Joints and their mechanical fixings, tap flange bolts & holding down bolts with a
hammer to ‘sound’ for any evidence of cracking. When necessary, remove fixings from each flange
for microscopic examination for defects. Bolts should then be tested for ultimate tensile failure for
comparison against the required rating of the bolts;
— reduction in thickness, due mainly to the following:
— thermal shocks,
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— chemical attacks,
— erosion and wear,
— frost action;
— cracks that can be divided into:
— local micro-cracks and commonly, consequent macro-cracks,
— cracks involving large sections of liner;
— restriction of free move-ability of the liner section due to:
— chemical reactions between condensates and brickwork causing irreversible expansion and
consequently jamming of expansion joints,
— reduced efficiency of joints due to solid deposits,
— lack of clearance between liner(s) and their supports.
4.4.3.4 Insulation
The integrity of the insulation has great influence on the life of all liners. The insul
...
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