EN 14741:2006
(Main)Thermoplastics piping and ducting systems - Joints for buried non-pressure applications - Test method for the long-term sealing performance of joints with elastomeric seals by estimating the sealing pressure
Thermoplastics piping and ducting systems - Joints for buried non-pressure applications - Test method for the long-term sealing performance of joints with elastomeric seals by estimating the sealing pressure
This draft European Standard specifies a method for determination of the long-term sealing pressure of elastomeric seals in assembled joints for buried non-pressure sewerage plastics piping and ducting systems.
Rohrleitungs- und Schutzrohrsysteme aus Thermoplasten - Verbindungen für erdverlegte drucklose Anwendungen - Prüfverfahren für das Langzeit-Dichtverhalten von Verbindungen mit Elastomer-Dichtungen durch Abschätzung des Dichtdrucks
Systèmes de canalisations et de gaines en thermoplastiques - Assemblages pour applications enterrées sans pression - Méthode d'essai pour la performance à long terme des assemblages avec garnitures d'étanchéité en élastomère par l'estimation de la pression d'étanchéité
La présente Norme européenne spécifie une méthode permettant de déterminer la pression d'étanchéité à long terme des garnitures d'étanchéité en élastomère des assemblages de systèmes de canalisations et de gaines en plastiques sans pression et enterrés.
Thermoplastics piping and ducting systems - Joints for buried non-pressure applications - Test method for the long-term sealing performance of joints with elastomeric seals by estimating the sealing pressure
General Information
- Status
- Published
- Publication Date
- 14-Feb-2006
- Withdrawal Date
- 30-Aug-2006
- Technical Committee
- CEN/TC 155 - Plastics piping systems and ducting systems
- Drafting Committee
- CEN/TC 155 - Plastics piping systems and ducting systems
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 25-Nov-2010
- Completion Date
- 25-Nov-2010
- Directive
- 89/106/EEC - Construction products
Relations
- Effective Date
- 22-Dec-2008
Overview
EN 14741:2006 (CEN) defines a laboratory test method to estimate the long-term sealing pressure of elastomeric seals used in joints for buried, non‑pressure sewerage thermoplastics piping and ducting systems. The method measures the pressure required to lift the seal by forcing a controlled gas flow through PTFE tubes placed between the seal and spigot/socket, and extrapolates measured behaviour over time (semi‑log regression) to estimate sealing performance up to 100 years.
Key Topics and Requirements
- Scope: Determination of long‑term sealing pressure for elastomeric seals in assembled joints for buried non‑pressure sewerage plastics systems. Supersedes EN 1989:2000.
- Test principle: Measure pressure required to achieve 120 ml/min flow through PTFE tubes placed at three equally spaced positions around the joint; record pressures at prescribed intervals and use least‑squares linear regression on p = B + M log t to extrapolate to 24 h and 100 years.
- Test conditions: Temperature controlled environment at (23 ± 2) °C; gas source either nitrogen (≥99.8% purity) or cleaned air; flow rate 120 ± 5 ml/min.
- Measurement schedule: Typical measurement times include 24 h, 168 h, 336 h, 504 h, 600 h, 696 h, 862 h, 1008 h, 1392 h and 2000 h (actual timing rules allow limited deviation where necessary).
- Apparatus & test piece: Regulator/pressure controller, pressure gauge (EN 837‑1 class 0.6 or better), flow meter, PTFE tubes conforming to specified flattened thickness (0.16–0.24 mm) and width (6–10 mm) and able to sustain ≥10 bar.
- Data analysis & acceptance: Use EN ISO 9967 regression approach; choose extrapolated values with correlation coefficient R ≥ 0.90. If all three tubes record 10 bar at the 504 h reading, the assembly is deemed to have passed. If R < 0.90, extend measurements.
Applications and Who Uses It
- Manufacturers of thermoplastic sewer and ducting systems: validate joint seal designs and materials.
- Independent test laboratories and certification bodies: perform standardized long‑term sealing assessments for product compliance.
- Specifiers, engineers and contractors: select joint systems with quantified long‑term sealing performance for buried, non‑pressure applications.
- Regulators and procurement teams: reference a harmonized CEN test method when defining performance requirements.
Benefits include reproducible, comparable sealing performance data, support for system standards, and objective basis for material or design improvement.
Related Standards
- EN 681 series (elastomeric seal material requirements - Parts 1–4)
- EN ISO 9967 (plastic pipes - creep ratio and regression method)
- EN 837‑1 (Bourdon tube pressure gauges)
Keywords: EN 14741:2006, thermoplastics piping, elastomeric seals, long‑term sealing pressure, buried non‑pressure sewerage, PTFE tube test, CEN test method.
Frequently Asked Questions
EN 14741:2006 is a standard published by the European Committee for Standardization (CEN). Its full title is "Thermoplastics piping and ducting systems - Joints for buried non-pressure applications - Test method for the long-term sealing performance of joints with elastomeric seals by estimating the sealing pressure". This standard covers: This draft European Standard specifies a method for determination of the long-term sealing pressure of elastomeric seals in assembled joints for buried non-pressure sewerage plastics piping and ducting systems.
This draft European Standard specifies a method for determination of the long-term sealing pressure of elastomeric seals in assembled joints for buried non-pressure sewerage plastics piping and ducting systems.
EN 14741:2006 is classified under the following ICS (International Classification for Standards) categories: 23.040.05 - Pipeline and its parts for external sewage systems; 23.040.80 - Seals for pipe and hose assemblies. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 14741:2006 has the following relationships with other standards: It is inter standard links to EN 1989:2000. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 14741:2006 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2006
1DGRPHãþD
SIST EN 1989:2002
Thermoplastics piping and ducting systems - Joints for buried non-pressure
applications - Test method for the long-term sealing performance of joints with
elastomeric seals by estimating the sealing pressure
Thermoplastics piping and ducting systems - Joints for buried non-pressure applications
- Test method for the long-term sealing performance of joints with elastomeric seals by
estimating the sealing pressure
Rohrleitungs- und Schutzrohrsysteme aus Thermoplasten - Verbindungen für erdverlegte
drucklose Anwendungen - Prüfverfahren für das Langzeit-Dichtverhalten von
Verbindungen mit Elastomer-Dichtungen durch Abschätzung des Dichtdrucks
Systemes de canalisations et de gaines en thermoplastiques - Assemblages pour
applications enterrées sans pression - Méthode d'essai pour la performance a long
terme des assemblages avec garnitures d'étanchéité en élastomere par l'estimation de la
pression d'étanchéité
Ta slovenski standard je istoveten z: EN 14741:2006
ICS:
23.040.60 Prirobnice, oglavki in spojni Flanges, couplings and joints
elementi
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 14741
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2006
ICS 23.040.80 Supersedes EN 1989:2000
English Version
Thermoplastics piping and ducting systems - Joints for buried
non-pressure applications - Test method for the long-term
sealing performance of joints with elastomeric seals by
estimating the sealing pressure
Systèmes de canalisations et de gaines en Rohrleitungs- und Schutzrohrsysteme aus Thermoplasten -
thermoplastiques - Assemblages pour applications Verbindungen für erdverlegte drucklose Anwendungen -
enterrées sans pression - Méthode d'essai pour la Prüfverfahren für das Langzeit-Dichtverhalten von
performance à long terme des assemblages avec Verbindungen mit Elastomer-Dichtungen durch
garnitures d'étanchéité en élastomère par l'estimation de la Abschätzung des Dichtdrucks
pression d'étanchéité
This European Standard was approved by CEN on 30 December 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14741:2006: E
worldwide for CEN national Members.
Contents
Foreword .3
1 Scope .4
2 Normative references.4
3 Symbols .4
4 Principle.5
5 Apparatus .5
6 Test pieces.6
7 Test procedure .7
8 Calculation and expression of the results.8
9 Test report .10
Annex A (informative) Example of a tube manufacturers specification .12
Annex B (informative) Description of a training test assembly .13
Foreword
This European Standard (EN 14741:2006) has been prepared by Technical Committee CEN/TC 155 “Plastics
piping systems and ducting systems”, the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by August 2006, and conflicting national standards shall be withdrawn at
the latest by August 2006.
This document supersedes EN 1989:2000.
The material-dependent parameters and/or performance requirements are incorporated in the System
Standard(s) concerned.
This standard is one of a series of standards on test methods that support System Standards for plastics
piping systems and ducting systems.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
1 Scope
This draft European Standard specifies a method for determination of the long-term sealing pressure of
elastomeric seals in assembled joints for buried non-pressure sewerage plastics piping and ducting systems.
2 Normative references
The following referenced documents are indispensable for the application 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 681-1, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 1: Vulcanized rubber
EN 681-2, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 2: Thermoplastic elastomers
EN 681-3, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 3: Cellular materials of vulcanized rubber
EN 681-4, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 4: Cast polyurethane sealing elements
EN 837-1:1996, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology,
requirements and testing
EN ISO 9967, Plastics pipes - Determination of creep ratio (ISO 9967:1994)
3 Symbols
B : the theoretical pressure in bar, in the PTFE tube at t = 1 h
D : drop factor of extrapolated pressure data at 24 h and 100 years
M : the gradient of the curve
p : pressure measured in the PTFE tube at a flow of 120 ml/min and the time t hours
t
p : initial leakage pressure in bar, measured in the PTFE tube after completing the assembly
p , p , p : pressure measured in the 3 PTFE tubes in the tested joint marked a, b or c respectively at the
t t t
a b c
time t hours
p : extrapolated pressure in bar at 100 years
x
p : calculated pressure in bar at 24 h
y
p , p , p : extrapolated pressure in bar at 100 years in the 3 PTFE tubes in the tested joint marked a, b
xa xb xc
or c respectively.
p : the arithmetic mean value of the pressures obtained for each of the three extrapolated values
100 y
p at 100 years
x
p : the arithmetic mean value of the pressures obtained for each of the three calculated values p
24 h y
at 24 h
R : correlation coefficient
t : time in hours
4 Principle
The sealing pressure in a joint is estimated by measuring the pressure, necessary to lift the seal, in each of 3
PTFE tubes equally distributed over the circumference of a joint located between the rubber seal and the
spigot or socket as appropriate, see Figure 1.
In a temperature controlled environment and at increasing time intervals, a constant flow rate of 120 ml/min
nitrogen or air is forced through 3 flexible PTFE tubes.
The nitrogen or air pressure p, necessary to achieve this flow, is measured. The pressure p is measured at
t
increasing time intervals over a period of time. The extrapolated regression lines for p are used to calculate
t
the estimated value p at 100 years and p at 24 h.
x y
5 Apparatus
Key
A Source of nitrogen or clean air F Position of the tube in a joint with the sealing ring positioned on the spigot
B Regulator/pressure controller G Test assembly base
C Pressure gauge H Position of the tube in a joint with sealing ring positioned in the socket
D Fixed coupler J Connecting tube
E PTFE tube K Flow meter
Figure 1 — Typical arrangement of the test assembly
5.1 A source of nitrogen, with a purity of at least 99,8%, or alternatively, cleaned air (oil free) both capable
of supplying a flow of up to 200 ml/min and at a pressure of at least 10 bar .
5.2 Regulator/pressure controller, capable of regulating a stable pressure and flow increase up to
120 ml/min.
5.3 Pressure gauge, for measuring the pressure in the main line and capable of checking conformity to 7.2
(class 0,6 or better as specified in EN 837-1:1996).
5.4 Connecting tube, with an inside diameter of at least 4 mm.
5.5 PTFE tube, conforming to the following:
—
capable of sustaining at least 10 bar pressure.
—
the total thickness of the flattened PTFE tube shall be between 0,16 mm and 0,24 mm, measured in the
middle of the sample and carried out in two positions perpendicular to each other.
—
the total width of the flattened tube shall be between 6 mm and 10 mm.
NOTE The PTFE tube used for this test is a blown-up tube, normally applied as a shrinkage tube.
The original diameter and wall thickness after shrinkage are normally specified. The attention is drawn that the blown-up
dimensions are normally not specified. Care should be taken that the wall thickness and the diameter of the tube as
received are verified. The given tolerances should be seen as a guide for the supplier.
5.6 Flow meter, with a capacity of 200 ml/min and a tolerance of ± 5 ml/min
5.7 Means for storage of the test assembly, capable of fixing and storing the test assembly in such a way
that no additional movements in the joint can occur. It shall be capable of fixing the PTFE tubes in such a way
that during connecting or disconnecting to the pressure gauge and flow meter, no movement of the PTFE tube
in the sealing area can occur.
5.8 Lubricant, an aerosol of silicon (Polydimethylsiloxanoil) with gas propellant (Propane/Butane).
6 Test pieces
6.1 General
Each test piece shall consist of a complete joint, together with its elastomeric seal and PTFE tube(s). Unless
otherwise specified in the referring standard, the number of PTFE tubes shall be three, marked as a, b and c,
equally spaced around the spigot.
6.2 Assembly
Prior to assembly, the test pieces shall be conditioned at the test temperature for at least 24 h.
Clean the rubber sealing ring, the socket and the spigot.
Prepare the PTFE tube by pressing it together several times until permanently flattened and place it along the
smooth surface of the spigot or socket.
1 5 2
1 bar = 10 N/m
Lubricate the smooth wall in the joint (spigot or socket), the seal and PTFE tube(s). The lubricant as defined in
5.8 shall be used. Use sufficient lubricant to ensure that the PTFE shrinkage tube(s) and seal can be
assembled without damage, and the seal can equalise its position within the groove circumference.
Assemble the socket and spigot, including the seal, in accordance with the manufacturer's instructions and the
following requirements.
a) The joint shall be assembled in such a way that the PTFE tubes are mounted between the spigot or
socket and the seal (see Figure 1); precaution shall be taken to avoid squeezing of the PTFE tube outside
the sealing area.
It is permitted to mill a grove, insert thin plastics strips along the tube, drill holes in the spigot or socket or
any other method to give room for sufficient flow through the tube outside the sealing area. The method
selected shall not significantly influence the creep behaviour of the joint in the sealing housing area.
b) Make sure that the PTFE tube can move freely in the axial direction and that the
...
The EN 14741:2006 standard provides a comprehensive framework for evaluating the long-term sealing performance of joints with elastomeric seals used in buried non-pressure thermoplastics piping and ducting systems. The scope of this draft European Standard is notably precise; it outlines a specific test method to determine the sealing pressure of elastomeric seals in assembled joints, specifically addressing applications in sewerage systems. One of the strengths of EN 14741:2006 is its focus on non-pressure applications, which is essential for accurately assessing the performance of thermoplastic piping systems in conditions that do not involve internal pressure. This is particularly relevant for municipalities and contractors involved in sewerage infrastructure, where the integrity of joints is critical for preventing leaks and maintaining system functionality. The standard's methodology allows for an objective assessment of sealing performance, which aids manufacturers in ensuring compliance with essential performance criteria. The emphasis on long-term performance evaluation addresses the durability aspect of elastomeric seals, making it highly relevant in today's construction landscape where longevity and sustainability are increasingly prioritized. Moreover, the clear definition of testing parameters enhances the standard's utility for manufacturers, contractors, and regulatory bodies alike, ensuring that all parties have a consistent benchmark for quality and performance. This consistency is crucial in fostering trust in the materials used for underground applications, contributing to overall public health and environmental safety. In summary, EN 14741:2006 establishes a vital testing framework for the long-term sealing performance of elastomeric seals in non-pressure applications, reinforcing its significance in the development and maintenance of reliable thermoplastic piping systems for sewerage infrastructure. Its precise scope, strong methodological framework, and focus on long-term performance underscore its importance in industry standards.
Die Norm EN 14741:2006 legt einen wichtigen Teststandard für thermoplastische Rohr- und Kanalführungsanlagen fest, der sich auf die langfristige Dichtheitsleistung von Fugen mit elastomerischen Dichtungen konzentriert. Der Anwendungsbereich dieser Norm ist auf nicht druckbelastete Anwendungen im Bereich der Kanalisation ausgerichtet, was sie besonders relevant für die Planung und Installation von Abwassersystemen macht. Ein herausragender Aspekt der EN 14741:2006 ist die spezifische Methode zur Bestimmung des langfristigen Dichtungsdrucks von elastomerischen Dichtungen in montierten Fugen. Dieser Test ist entscheidend, um die Betriebssicherheit und Langlebigkeit von Abwasserleitungen zu gewährleisten. Durch die genaue Bewertung der Dichtungsleistung wird das Risiko von Leckagen und somit mögliche Umweltschäden minimiert, was den wirtschaftlichen und ökologischen Aspekt dieser Norm unterstreicht. Die Strenge und Präzision des Verfahrens unterstützen Fachleute aus der Branche dabei, die Qualität ihrer Systeme zu verbessern und die Einhaltung von europäischen Standards zu garantieren. Die EN 14741:2006 trägt somit nicht nur zur Effizienz und Zuverlässigkeit von Abwasserrohrsystemen bei, sondern leistet auch einen wertvollen Beitrag zum Schutz von Wasserressourcen und zur Förderung nachhaltiger Entwässerungslösungen. Insgesamt stellt die EN 14741:2006 eine essenzielle Norm dar, die die Anforderungen an die langfristige Dichtungsleistung für nicht druckbelastete Anwendungen umfassend abdeckt und wichtige Standards für Qualität und Sicherheit in der Rohrleitungsbranche setzt.
SIST EN 14741:2006 표준은 매설된 비압력 배수 시스템의 연결부에서 고무 씰의 장기 실링 성능을 평가하는 방법을 명확히 규명합니다. 이 표준의 주요 목적은 사용되는 플라스틱 파이프 및 덕트 시스템의 내구성을 향상시키고, 이들의 안전성을 보장하는 것입니다. 매설된 씰의 장기 실링 압력을 정량적으로 측정함으로써, 사용자는 시스템 설치 후의 신뢰성을 보다 확고히 할 수 있습니다. 이 표준은 고무 씰을 포함한 조립된 조인트의 열거된 요구 사항을 체계적으로 정리하여, 실질적인 적용에 있어 신뢰성을 높입니다. 조인트의 디자인, 제작, 그리고 설치 단계에서 발생할 수 있는 잠재적인 결함을 사전적으로 검토하도록 유도함으로써, 최종 사용자인 소비자의 안전과 시스템의 수명을 연장할 수 있는 기초를 마련합니다. SIST EN 14741:2006의 한 가지 두드러진 강점은 다양한 환경 및 조건에서의 장기 성능 평가에 중점을 두고 있다는 점입니다. 이 표준은 각종 설치 조건과 환경 변화로 인해 발생할 수 있는 잔여 화학적, 물리적 스트레스를 반영할 수 있는 체계적인 테스트 방법을 제공합니다. 이는 제조업체와 설치업체 모두에게 안정적이고 일관적인 품질 기준을 제시함으로써, 건축 및 인프라 프로젝트 전반에 걸쳐 필수적으로 요구되는 기준으로 자리 잡고 있습니다. 따라서 SIST EN 14741:2006 표준은 플라스틱 배관 및 덕트 시스템의 신뢰성을 유지하고 강화하는 데 필요한 장기적인 해결책을 제시하며, 이로 인해 환경 친화적인 개발에 기여하고 있습니다. 인프라의 질적 개선과 기업의 경쟁력 강화를 위해 필수적인 표준임에 틀림없습니다. 이러한 이유로, EN 14741:2006은 건설 산업뿐만 아니라 다양한 분야에서도 그 중요성이 더욱 부각되고 있는 문서입니다.
La norme SIST EN 14741:2006 établit un cadre essentiel pour évaluer les systèmes de tuyauterie en thermoplastiques et leur performance en matière d'étanchéité à long terme. En précisant une méthode pour déterminer la pression d’étanchéité à long terme des joints avec des joints élastomériques dans des systèmes de tuyauterie en plastique non soumis à pression, cette norme s'applique de manière significative aux systèmes d'assainissement enfouis. Parmi les points forts de cette norme, on relève sa capacité à garantir la fiabilité des joutes, ce qui est crucial pour assurer la durabilité des infrastructures souterraines. En évaluant la performance d'étanchéité dans des conditions de service réelles, la norme contribue à la réduction des risques de fuites et d'éventuelles défaillances, favorisant ainsi la protection de l'environnement et la durabilité des systèmes. La pertinence de la norme SIST EN 14741:2006 réside dans son alignement avec les exigences actuelles en matière de gestion des eaux usées et de développement durable. En normalisant les méthodes de test pour évaluer la longévité et la performance des joints élastomériques, cette norme offre un outil précieux pour les fabricants, les ingénieurs et les responsables de la réglementation. La norme joue également un rôle clé dans l'harmonisation des pratiques au niveau européen, ce qui facilite le commerce et l'application des exigences techniques dans toute l'Union européenne. Dans un contexte où l'intégrité des infrastructures est primordiale, la norme SIST EN 14741:2006 se révèle indispensable pour assurer une performance fiable et durable des systèmes de tuyauterie en thermoplastiques, tout en répondant aux défis contemporains liés à la gestion des ressources en eau.
SIST EN 14741:2006は、埋設された非圧力の排水用プラスチック配管およびダクトシステムにおけるエラストマーシールを用いた接合部の長期的な密封性能を評価するための試験方法を規定しています。この標準は、排水システムにおける接合部分の信頼性を保証するために必要な基準を提供し、特にエラストマーシールの密封圧を測定することに焦点を当てています。 この標準の強みは、その厳格な試験方法と、実際の運用条件を模倣した評価手法にあります。これにより、長期にわたる使用における接合部の密封性が科学的に確立され、信頼性の高いデータを提供します。また、排水システムにおける漏れや水害のリスクを低減するための重要な要素ともなっており、関連する業界関係者に対して貴重な指針を提供します。 SIST EN 14741:2006は、特に環境への配慮や持続可能な建設資材の使用が求められる現代において、重要な標準となっています。排水システムの設計者や施工者にとって、この基準は高品質な配管ソリューションを確保するための必須のツールとして機能し、結果的にはメンテナンスコストの削減にも寄与します。このように、SIST EN 14741:2006は、埋設配管システムの信頼性を向上させるための不可欠な要素であり、業界のベストプラクティスを形成する一助となります。
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