SIST EN 15885:2019
(Main)Classification and characteristics of techniques for renovation, repair and replacement of drains and sewers
Classification and characteristics of techniques for renovation, repair and replacement of drains and sewers
This European Standard specifies a system for the classification of trenchless techniques for renovation, repair and replacement on the same line of drains and sewers outside buildings, operated under gravity or pressure, including pipes, connections and manholes. It defines and describes families of techniques and their different generic methods and materials used.
This European Standard does not apply for replacement by open trenching according to EN 1610 and trenchless construction and testing of drains and sewers as new construction off-the-line of the existing drain or sewer according to EN 12889.
This European Standard does not apply for the specification of requirements for specific products.
For each technique family it lists relevant existing standards, materials and applications and outlines characteristics including installation aspects, structural and hydraulic capabilities and site impact.
This standard does not apply to any work required on the existing pipe prior to renovation, repair or replacement.
This European Standard provides information needed to determine viable options for identification of the optimal technique with regard to a given set of renovation, repair or replacement objectives.
NOTE It is the responsibility of the designer to choose and design the renovation and repair systems.
It does not specify the calculation methods to determine, for each viable technique, the required amount of material needed to secure the desired performance of the pipeline to be rehabilitated.
Klassifizierung und Eigenschaften von Techniken für die Renovierung, Reparatur und Erneuerung von Abwasserkanälen und -leitungen
Diese Europäische Norm legt ein System zur Klassifizierung von Techniken für die grabenlose Renovierung, Reparatur und Erneuerung in der bisherigen Linienführung von Abwasserkanälen und -leitungen außerhalb von Gebäuden fest, die unter Schwerkraft oder Druck betrieben werden, und Rohre, Verbindungen und Schächte beinhalten. Sie definiert und beschreibt Technikfamilien und verschiedene allgemeine Verfahren und Werkstoffe.
Diese Europäische Norm gilt nicht für Erneuerung durch offene Gräben nach EN 1610 und grabenlose Verlegung und Prüfung von Abwasserleitungen und –kanälen als Neuverlegung mit anderer als der bestehenden Linienführung der Abwasserleitungen und –kanäle nach EN 12889.
Diese Europäische Norm gilt nicht für die Festlegung von Anforderungen an besondere Produkte.
Für jede Technikfamilie sind die zutreffenden bestehenden Normen, Werkstoffe und Anwendungen aufgeführt und die Eigenschaften, einschließlich Einbauaspekte, baustatischer und hydraulischer Leistungsmerkmale sowie Standorteinflüsse dargestellt.
Diese Norm gilt nicht für die vor Renovierung, Reparatur oder Erneuerung nötigen Arbeiten am vorhandenen Rohr.
Diese Europäische Norm enthält Angaben, die für die Auswahl der optimalen Technik im Hinblick auf eine vorgegebene Reihe von Renovierungs-, Reparatur- oder Erneuerungszielen erforderlich sind.
ANMERKUNG Es liegt in der Verantwortung des Entwurfsplaners, das Renovierungs- und Reparatursystem auszuwählen und zu entwerfen.
Sie legt keine Berechnungsverfahren fest, mit denen für jede praktikable Technik der erforderliche Typ des Werkstoffs ermittelt werden kann, der zur Sicherstellung der gewünschten Leistung der sanierten Rohrleitung benötigt wird.
Classification et caractéristiques des techniques de rénovation, de réparation et de remplacement des réseaux d’évacuation et d’assainissement
La présente Norme européenne spécifie un système de classification pour les techniques sans tranchée de rénovation, de réparation et de remplacement sur la même conduite des réseaux d’évacuation et d’assainissement situés à l’extérieur des bâtiments, fonctionnant par gravité ou sous pression, incluant les canalisations, les branchements et les regards de visite. Elle définit et décrit les familles de techniques, ainsi que leurs différentes méthodes génériques et les matériaux utilisés.
La présente Norme européenne ne s’applique pas au remplacement par tranchée ouverte conformément à l’EN 1610, ni à la construction sans tranchée et à l’essai de réseaux d’évacuation et d’assainissement en tant que nouvelle construction hors conduite du réseau d’évacuation ou d’assainissement existant conformément à l’EN 12889.
La présente Norme européenne ne s’applique pas pour la spécification des exigences relatives aux produits spécifiques.
Pour chaque famille de techniques, elle dresse la liste des normes pertinentes existantes, des matériaux et applications, et expose les principales caractéristiques incluant les différents aspects de l’installation, les capacités structurelle et hydraulique et l’impact sur le site.
La présente norme ne s’applique pas aux travaux requis sur la canalisation existante avant tout remplacement, toute rénovation ou toute réparation.
La présente Norme européenne fournit les informations requises pour déterminer des options viables et qui permettront d’identifier la technique optimale pour un ensemble donné d’objectifs de rénovation, de réparation et de remplacement.
NOTE Il est de la responsabilité du concepteur de choisir et de concevoir les systèmes de rénovation, de remplacement et de réparation.
La présente Norme européenne ne spécifie pas les méthodes de calcul qui permettent de déterminer, pour chaque technique viable, la quantité de matériau nécessaire pour garantir les performances désirées pour la canalisation à réhabiliter.
Klasifikacija in tehnične lastnosti za obnovo, popravilo in zamenjavo vodov in kanalov
Ta evropski standard določa sistem za klasifikacijo tehnik brez izkopa za obnovo, popravilo in zamenjavo na istih vodih in kanalih zunaj stavb, ki delujejo s pomočjo gravitacije ali tlaka, vključno s cevmi, priključki in jaški. Določa in opisuje družine tehnik in njihove različne splošne metode ter uporabljene materiale.
Ta evropski standard se ne uporablja za zamenjavo s tehniko odprtih jarkov v skladu s standardom EN 1610 ter za izvedbo in preskušanje vodov in kanalov brez izkopa v obliki nove izvedbe izven obstoječega voda ali kanala v skladu s standardom EN 12889.
Ta evropski standard se ne uporablja za specifikacijo zahtev glede specifičnih izdelkov.
Za vsako družino tehnik navaja ustrezne obstoječe standarde, materiale in uporabe ter opisuje tehnične značilnosti, vključno z vidiki namestitve, strukturnimi in hidravličnimi sposobnostmi ter vplivom na mesto cevovoda.
Ta standard se ne uporablja za nobeno delo, ki je potrebno na obstoječi cevi pred prenovo, popravilom ali zamenjavo.
Ta evropski standard vsebuje informacije, ki so potrebne za določitev optimalne tehnike v povezavi z danim naborom ciljev glede prenove, popravila ali zamenjave.
OPOMBA: Načrtovalec je odgovoren za izbiro in načrtovanje sistema za obnovo in popravilo.
Dokument ne določa računske metode za določanje, za vsako izvedljivo tehniko, potrebne količine materiala, ki je potreben za zagotovitev želene učinkovitosti cevovoda, ki bo obnovljen.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.NDQDORYKlassifizierung und Eigenschaften von Techniken für die Renovierung, Reparatur und Erneuerung von Abwasserkanälen und -leitungenClassification et caractéristiques des techniques de rénovation, de réparation et de remplacement des réseaux d’évacuation et d’assainissementClassification and characteristics of techniques for renovation, repair and replacement of drains and sewers93.030Zunanji sistemi za odpadno vodoExternal sewage systems91.140.80Drenažni sistemiDrainage systemsICS:Ta slovenski standard je istoveten z:EN 15885:2018SIST EN 15885:2019en,fr,de01-januar-2019SIST EN 15885:2019SLOVENSKI
STANDARDSIST EN 15885:20111DGRPHãþD
SIST EN 15885:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15885
November
t r s z ICS
{ uä r u r Supersedes EN
s w z z wã t r s rEnglish Version
Classification and characteristics of techniques for renovationá repair and replacement of drains and sewersClassification et caractéristiques des techniques de rénovationá de réparation et de remplacement des réseaux d 5évacuation et d 5assainissement
Klassifizierung und Eigenschaften von Techniken für die Renovierungá Reparatur und Erneuerung von Abwasserkanälen und æleitungen This European Standard was approved by CEN on
t w June
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w z z wã t r s z ESIST EN 15885:2019
EN 15885:2018 (E) 2 Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 4 4 Symbols and abbreviations . 9 5 Classification of renovation techniques for drains and sewers . 9 5.1 General . 9 5.2 Lining with continuous pipes . 10 5.3 Lining with close-fit pipes . 13 5.4 Lining with cured-in-place pipes . 15 5.5 Lining with discrete pipes . 18 5.6 Lining with spirally-wound pipes . 21 5.7 Lining with pipe segments . 24 5.8 Lining with a rigidly anchored plastics inner layer (RAPL). 25 5.9 Lining with sprayed material . 27 6 Classification of trenchless replacement techniques for drains and sewers . 30 6.1 General . 30 6.2 Replacement by pipe bursting . 30 6.3 Replacement by pipe eating method . 33 7 Classification of repair techniques for drains and sewers . 35 7.1 General . 35 7.2 Repair by injection . 36 7.3 Repair with cured-in-place components . 40 7.4 Repair with trowelled or moulded material . 42 7.5 Repair with internal mechanical devices . 44 7.6 Repair by flood grouting . 46 8 Classification of performance characteristics for replacement, renovation and repair . 47 8.1 General . 47 8.2 Structural integrity . 48 8.2.1 External loads capacity . 48 8.2.2 Internal loads capacity . 48 8.3 Impacts on site . 49 8.4 Technique requirement for man entry . 49 8.5 Technique requirement for shape . 49 8.6 Hydraulic performance . 49 9 Performance levels for replacement, renovation and repair . 50 Annex A (informative)
Place of this European Standard in the context of the overall design of replacement, renovation and repair of drains and sewers . 51 Bibliography . 52 SIST EN 15885:2019
EN 15885:2018 (E) 3 European foreword This document (EN 15885:2018) has been prepared by Technical Committee CEN/TC 165 “Waste water engineering”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2019, and conflicting national standards shall be withdrawn at the latest by May 2019. 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 supersedes EN 15885:2010. The main changes with respect to EN 15885:2010 are: a) new Clause 6 "Classification of trenchless replacement techniques for drains and sewers " added; b) definitions adapted to EN ISO
11295:2017; c) Table 1 to Table 9 supplemented by features "Installation equipment", "Surface area" and "Excavation"; d) images partly adapted to EN ISO
11295:2017; e) sequence of sub-clauses 5.7 and 5.8 exchanged; f) technique family “Repair with trowelled material” (previous sub-clause 6.4) renamed “Repair with trowelled or moulded material”, and distinction between these techniques and Repair by injection clarified by extended text in new 7.2 and 7.4; g) editorial changes. This document refers to existing EN product standards to the extent available for the techniques and materials covered. It provides an overview of trenchless methods used for renovation and repair of drains and sewers, and for their replacement on the same line, regardless of the material used. In respect of sewer renovation
and replacement techniques using plastics materials only, it reproduces definitions and other information (but no requirements) contained in EN ISO 11295. Due to their continuous development the most up-to-date information on these particular techniques may be contained in either this document or EN ISO 11295, whichever is the latest edition. For management and control of rehabilitation activities in drains and sewers a European Standard EN 14654-2, Management and control of operational activities in drain and sewer systems outside buildings — Part 2: Rehabilitation is available. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15885:2019
EN 15885:2018 (E) 4 1 Scope This European Standard specifies a system for the classification of trenchless techniques for renovation, repair and replacement on the same line of drains and sewers outside buildings, operated under gravity or pressure, including pipes, connections and manholes. It defines and describes families of techniques and their different generic methods and materials used. This European Standard does not apply for replacement by open trenching according to EN 1610 and trenchless construction and testing of drains and sewers as new construction off-the-line of the existing drain or sewer according to EN 12889. This European Standard does not apply for the specification of requirements for specific products. For each technique family it lists relevant existing standards, materials and applications and outlines characteristics including installation aspects, structural and hydraulic capabilities and site impact. This standard does not apply to any work required on the existing pipe prior to renovation, repair or replacement. This European Standard provides information needed to determine viable options and for identification of the optimal technique with regard to a given set of renovation, repair or replacement objectives. NOTE It is the responsibility of the designer to choose and design the renovation, replacement and repair systems. It does not specify the calculation methods to determine, for each viable technique, the required amount of material needed to secure the desired performance of the pipeline to be rehabilitated. 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 752, Drain and sewer systems outside buildings — Sewer system management 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 http://www.iso.org/obp 3.1 rehabilitation measures for restoring or upgrading the performance of existing pipeline systems, including renovation (3.2), repair (3.3) and replacement (3.4) [SOURCE: EN ISO 11295:2017, 3.1.1, modified – term numbers adapted to numbering of EN 15885] SIST EN 15885:2019
EN 15885:2018 (E) 5 3.2 renovation work incorporating all or part of the original fabric of the pipeline, by means of which its current performance is improved [SOURCE: EN ISO 11295:2017, 3.1.2] 3.3 repair rectification of local damage [SOURCE: EN ISO 11295:2017, 3.1.3] 3.4 replacement construction of a new pipeline, on or off the line of an existing pipeline, where the function of the new pipeline system incorporates that of the old [SOURCE: EN ISO 11295:2017, 3.1.4] 3.5 technique family grouping of renovation (3.2) or trenchless replacement techniques which are considered to have common characteristics for standardization purposes [SOURCE: EN ISO 11295:2017, 3.2.1, modified – term numbers adapted to numbering of EN 15885] 3.6 lining process of renovating an existing pipeline by introducing material on the inside 3.7 liner lining pipe (3.8) after installation [SOURCE: EN ISO 11295:2017, 3.2.3, modified – term numbers adapted to numbering of EN 15885] 3.8 lining pipe pipe inserted for renovation (3.2) purposes [SOURCE: EN ISO 11295:2017, 3.2.2, modified – term numbers adapted to numbering of EN 15885] 3.9 lining system lining pipe (3.8) and all relevant fittings inserted into an existing pipeline for the purposes of renovation (3.2) [SOURCE: EN ISO 11295:2017, 3.2.4, modified – term numbers adapted to numbering of EN 15885] SIST EN 15885:2019
EN 15885:2018 (E) 6 3.10 lining with continuous pipes lining with pipe made continuous prior to insertion, where the diameter of the lining pipe (3.8) remains unchanged [SOURCE: EN ISO 11295:2017, 3.2.5, modified – term numbers adapted to numbering of EN 15885] 3.11 lining with close-fit pipes lining with a continuous pipe (3.10) for which the cross-section is reduced to facilitate installation and reverted after installation to provide a close fit to the existing pipe [SOURCE: EN ISO 11295:2017, 3.2.6, modified – term numbers adapted to numbering of EN 15885] 3.12 lining with cured-in-place pipes lining with a flexible tube impregnated with a thermosetting resin, which produces a pipe after resin cure [SOURCE: EN ISO 11295:2017, 3.2.7] 3.13 lining with discrete pipes lining with short lengths of pipe which are jointed to form a continuous pipe one by one during insertion [SOURCE: EN ISO 11295:2017, 3.2.8] 3.14 lining with spirally-wound pipes lining with a profiled strip, spirally wound to form a continuous pipe after installation [SOURCE: EN ISO 11295:2017, 3.2.10] 3.15 lining with a rigidly anchored plastics inner layer lining with a single rigid annulus of structural cementitious grout formed between a plastics inner layer and the host pipe, where the plastics layer is permanently anchored in the grout [SOURCE: EN ISO 11295:2017, 3.2.13] 3.16 lining with pipe segments lining with prefabricated segments bonded to the existing pipe, which either have longitudinal joints and cover the whole of the pipe circumference, or cover only part of circumference [SOURCE: EN ISO 11295:2017, 3.2.14] 3.17 lining with sprayed or cast-in-place material lining by applying mineral (cement or silicate) or polymeric material, with or without reinforcement, directly onto the inside surface of the host pipe and/or manhole, by manual or mechanical (including robotic) means SIST EN 15885:2019
EN 15885:2018 (E) 7 3.18 non-stabilizing repair repair where the materials applied have a sealing effect but do not enhance structural stability 3.19 pipe bursting on-the-line replacement (3.4) method in which an existing pipe is broken by longitudinal splitting or brittle fracture, using a mechanically applied force from within, where the pipe fragments are forced into the surrounding ground and a new pipe of the same, smaller or larger diameter, is simultaneously pulled in [SOURCE: EN ISO 11295:2017, 3.2.15, modified – term numbers adapted to numbering of EN 15885] 3.20 pipe removal on-the-line replacement (3.4) method, in which the existing pipe is removed by pipe eating (3.21) or pipe extraction and a new pipe is installed [SOURCE: EN ISO 11295:2017, 3.2.16, modified – term numbers adapted to numbering of EN 15885] 3.21 pipe eating type of pipe removal (3.20), where the existing pipe is progressively broken up and removed along with an annulus of the ground immediately surrounding the existing pipe [SOURCE: EN ISO 11295:2017, 3.2.17, modified – term numbers adapted to numbering of EN 15885] 3.22 stabilizing repair repair where the materials applied have a sealing effect and can enhance structural stability 3.23 repair by injection filling of voids in existing pipe and/or surrounding ground, for structural repair or to seal leaks, by injection of grout or resin over all or part of the perimeter of the sewer Note 1 to entry: Three different methods can be distinguished: a) injection directly into a brickwork or masonry pipe structure; b) injection of the soil around the pipe; c) injection of a crack, joint or lateral connection, with or without the aid of a packer. 3.24 repair with trowelled or moulded material filling of a damaged area which has been prepared by milling, by introducing a high-viscosity material without pressure and either smoothing it with a trowel or confining it within temporary formwork 3.25 repair with cured-in-place patch repair by local lining with a flexible tube impregnated with a thermosetting resin which produces a short length of pipe after resin cure SIST EN 15885:2019
EN 15885:2018 (E) 8 3.26 repair with lateral connection collar repair of a connection between lateral and main pipe by installing a cured-in-place collar 3.27 repair with internal mechanical devices repair with internal mechanical seals or re-rounding clips 3.28 repair with internal mechanical seal sealing of local pipe damage and/or joints by use of an internal elastomeric seal held in place by compression rings 3.29 repair with mechanical re-rounding clip restoration of pipe roundness by insertion of an overlapping or hinged metal ring, which is expanded hydraulically and locks into place to permanently reverse local cross section deformation of circular pipe 3.30 flow diversion temporary abatement of all flows into the section of pipeline to be renovated or repaired by bypassing or other means 3.31 maintenance routine work undertaken to ensure the continuing performance of an asset [SOURCE: EN 16323:2014, 2.1.6.2] SIST EN 15885:2019
EN 15885:2018 (E) 9 4 Symbols and abbreviations SEL structural integrity based on external loads capacity G gravity pipeline applications P pressurized pipeline applications SIL structural integrity based on internal loads capacity EW excavation works NM non man entry ME man entry SOMP silicate organic mineral polymer CS circular shape NC non circular and circular shapes possible CCTV closed circuit television UP unsaturated polyester EP epoxy VE vinylester PE polyethylene PVC-U unplasticized poly(vinyl chloride) PP polypropylene EPDM ethylene-propylene-diene monomer GRP glass reinforced plastics GRC glass reinforced cement PUR polyurethane PRC polyester resin concrete 5 Classification of renovation techniques for drains and sewers 5.1 General Renovation technique families within the scope of this European Standard are shown in Figure 1. This clause establishes a classification of renovation techniques into families, where renovation is applied to continuous lengths of drain or sewer usually between two or more access points. Individual techniques shall be classified into families according to 5.2 to 5.9 where the different renovation technique families are defined and their respective features, including materials, applications, as well as geometric, performance and installation characteristics, are described. NOTE Figures 2 to 16 provide schematic illustrations of each family but do not include all necessary equipment. SIST EN 15885:2019
EN 15885:2018 (E) 10
a Other renovation techniques, which do not fit into the above families, are outside the scope of this European Standard which covers only technique families commonly available at the time of drafting. Figure 1 — Renovation technique families 5.2 Lining with continuous pipes Lining is carried out with a continuous pipe or a pipe made continuous, typically by butt-fusion, prior to insertion, where the cross section of the pipe used for lining remains unchanged. This technique is often referred to as slip-lining. Two methods of lining with continuous pipes are identified: — Method A: The lining pipe is smaller in diameter than the internal diameter of the host pipe to facilitate installation, and the host pipe itself is nominally round and without geometric defects. — Method B: The lining pipe is smaller in diameter than the internal diameter of the host pipe to facilitate installation, but the host pipe may have geometric defects that are corrected by using a ‘re-rounding pulling head’. A schematic representation of lining with continuous pipes, with re-rounding of existing pipeline, is shown in Figure 2. Features common to both methods are described in Table 1. SIST EN 15885:2019
EN 15885:2018 (E) 11
Key 1 pulling and re-rounding head (only for Method B) 5 re-rounded defect 2 lining pipe 6 defects 3 prior jointing of lining pipe 7 existing pipe 4 pulling force
Figure 2 — Schematic representation of lining with continuous pipes with re-rounding of existing pipeline SIST EN 15885:2019
EN 15885:2018 (E) 12 Table 1 — Features of lining with continuous pipes Feature Description Relevant documents: EN ISO 11296-2, EN ISO 11297-2 Materials: PE Applications: —
non-pressure pipes; —
pressure pipes. Geometric characteristics: —
minimum size:
100 mm; —
maximum size:
1 200 mm; —
maximum length:
750 m; —
capable of accommodating slightly curved alignments of the existing pipe. Performance: —
significant reduction in hydraulic (volumetric and flow) capacity; —
invert grade of liner can deviate from that of existing pipeline; —
structural rehabilitation is possible; —
abrasion resistance depends on liner material; —
chemical resistance depends on liner material. Installation characteristics: a)
pipes manufactured or prior assembled into the continuous length required; b)
insertion possible by pushing and/or pulling; c)
surface working space: storage of the whole insertion length required on surface: 1)
small diameters (typically
mm) can be supplied on coils, small space; 2)
larger diameters: supplied in straight lengths; d)
access to the existing pipeline: generally requires local excavation; e)
technique does not rely on adhesion to host pipe; f)
flow diversion is typically required for installation; g)
the annular space can be grouted, e.g. in non-pressure applications, to fix line and level and/or prevent subsequent movement; h)
live insertion is possible (but excl. drinking water applications for hygiene reasons); i)
reconnection of laterals: generally requires excavation. Installation equipment: —
rollers to support the entire length of the lining pipe string (except where pipe is inserted directly from a coil); —
pushing unit, if applicable; —
rollers to guide the lining pipe into the existing pipeline; —
winch or rod puller to pull the lining pipe through the existing pipeline; —
jointing equipment appropriate to the material; —
grouting equipment, if applicable. Surface area: —
for the lining pipe string (or coil trailer for smaller diameters) at the insertion end; —
for a winch or a rod puller at the receiving end. Excavation: —
at the insertion end: —
long enough to allow the lining pipe to enter the existing pipeline, taking account of the permissible minimum bending radius; —
wide enough for the guidance equipment and pushing equipment if applicable; —
at the receiving end: —
large enough to accommodate the lining pipe nose cone and the winch mast or rod puller, where applicable. SIST EN 15885:2019
EN 15885:2018 (E) 13 5.3 Lining with close-fit pipes Lining is carried out with a continuous pipe for which the effective maximum external diameter is reduced to facilitate installation and reverted after installation to provide a close fit to the existing pipe. Schematic representations of the following two possible methods of linings with close-fit pipes are shown in Figures 3 and 4. Features are described in Table 2. — Method A: reduction in the pipe manufacturing plant; the pipe is usually supplied coiled on a reel from which it is directly inserted; — Method B: reduction on site (typically applied to pressure pipelines only); the pipe is fed through diameter reduction or folding equipment and simultaneously inserted.
Key 1 drum trailer 5 winch cable 2 pipe guide 6 winch 3 lining pipe (folded) 7 guide pulley 4 pulling head 8 bracing NOTE
Pipe reverted (unfolded) after insertion by application of heat and/or pressure. Figure 3 — Schematic representation of installation of a pipe reduced in cross section in the pipe manufacturing plant (Method A) SIST EN 15885:2019
EN 15885:2018 (E) 14
Key 1 pulling head 4 winch or rod pulling device 2a initial lining pipe 5 guide pulley 2b reduced lining pipe 6 bracing cage 3 device for reducing
NOTE Pipe reverted (expanded or unfolded as applicable) after insertion by release of pulling force and application of pressure. Figure 4 — Schematic representation of installation of a pipe reduced in cross section on site (Method B) Table 2 — Features of lining with close fit pipes Feature Description Relevant documents: EN ISO 11296-3, EN ISO 11297-3 Materials: PE and PVC-U Applications: —
non-pressure pipes; —
pressure pipes. Geometric characteristics: —
some deviation from nominally circular shape possible; —
minimum size: 100 mm for both Method A and Method B; —
maximum size: 500 mm for Method A, 1 500 mm for Method B; —
maximum length: 500 m; —
some techniques can accommodate bends. Performance: —
minimal reduction in volumetric capacity; increase in flow due to reduced friction
possible; —
gradient cannot be restored; —
structural rehabilitation is possible; —
abrasion resistance depends on liner material; —
chemical resistance depends on liner material. SIST EN 15885:2019
EN 15885:2018 (E) 15 Feature Description Installation characteristics: a)
lining pipe first reduced in size by mechanical or thermo-mechanical means (in the manufacturing plant or on site), inserted (in the case of PVC-U pre-heating generally required) and then reverted by relief of installation forces or application of heat and/or pressure; b)
surface working space: no particular constraint for Method A, storage of the whole insertion length can be required on surface for Method B (depends on specific technique); c)
access: typically through manhole for Method A, requires local excavation for Method B; d)
technique does not rely on adhesion to host pipe; e)
flow diversion is required; f)
grouting not applicable; g)
reconnection of laterals: 1)
gravity pipelines: possible from inside (re-opening and tight connection); 2)
in pressure applications: generally requires excavation. Installation equipment: —
rollers to support the entire length of the lining pipe string (except where pipe is inserted directly from a coil); —
guide for entrance of the lining pipe into the existing pipeline; —
winch to pull the lining pipe through the existing pipelinea; —
pushing unit, if applicable; —
a compressor and a steam generator (where applicable), or hydraulic pressurisation pump according to particular technique, for lining pipe reversion; —
jointing equipment appropriate to material. Surface area: —
for the lining pipe string (or coil trailer for smaller diameters and/or folded pipe) at the insertion end; —
for reducing or folding equipment at the insertion end where reduction or folding is carried out simultaneously with insertion; —
for a winch at the receiving end; —
for reversion equipment. Excavation: —
for Method A, not necessary for sewer applications, where access through existing manholes is sufficient due to flexibility of the lining pipe; in other applications, only small excavations at both ends; —
for Method B, at the insertion end: long enough to allow the lining pipe to enter the existing pipeline, taking account of the permissible minimum bending radius;
wide enough for the guidance
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