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Marc DURANDEAU Digbuild project Manager

DIGBUILD European project results on modern, innovative and cost effective gas pipelines inside buildings. NEW SYSTEMS FOR G AS DI STRIBUTION INSIDE THE BUILD INGS. Marc DURANDEAU Digbuild project Manager. EFG 2005 Warsaw, 2005-09-20 & 21. SUMMARY.

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Marc DURANDEAU Digbuild project Manager

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  1. DIGBUILD European project results on modern, innovative and cost effective gas pipelines inside buildings NEW SYSTEMS FOR GAS DISTRIBUTION INSIDE THE BUILDINGS Marc DURANDEAU Digbuild project Manager EFG 2005 Warsaw, 2005-09-20 & 21

  2. SUMMARY • OVERVIEW OF THE DIGBUILD PROJECT : • 1.1 The 3 assessed techniques • 1.2 Main objectives • 1.3 Key figures • 1.4 The 9 partners • PROJECT ORGANISATION • MAIN RESULTS • 3.1 technical results • 3.2 economical results • 3.3 pilot installations • DIGBUILD PUBLIC DELIVERABLES • EN / ISO STANDARDISATION PROCESS

  3. 1.1 Overview of the Digbuild project : the 3 assessed techniques PEX CSST Multilayer piping

  4. 1.2 Overview of the Digbuild project : main objectives • to demonstrate the ability of innovative pipework systems for gas supply installations inside building to reduce the global cost of installation • to achieve a high level of safety, at least similar to that of traditional techniques • to allow the development of new user friendly applications • to set up the technical specifications for the different assessed systems

  5. 1. 3 Overview of the Digbuild project : key figures • GLOBAL BUDGET :1 625 000 Euro • CONTRIBUTION FROM EC : 500 000 Euro • PROJECT DURATION : 40,5 MONTHS • (2001/05/16 - 2004/10/01)

  6. 1. 4 Overview of the Digbuild project : the 9 partners • 1 GAZ DE FRANCE Direction de la Recherche St Denis F • GAS NATURAL SDG S.A ZaragozaSP • DVGW Bonn D • BELGIAN BUILDING RESEARCH INSTITUTE Bruxelles B • ACOME PEX Mortain F • WIRSBO PEX Derbyshire UK • COMAP SA MULTILAYER Lyon F • HITACHI METALS EUROPE GmbH CSST Düsseldorf D • BOA Netherland BV CSST Tilburg NL

  7. 2. Project organisation Splitting into work packages

  8. 3. Main results : 3.1 technical results – test programs • 1st test program • Tightness ; heat cycle resistance ; H.T. resistance ; bending ; tensile load resistance ; chemical resistance • Weak points can be fixed (preventive measures when installing ; safety devices) • 2nd test program • Mechanical strength ; aggression resistance ; system specific characteristics • Good results Conclusions : good results ; none technique shall have been excluded at this step ; if necessary, preventive measures and/or safety devices

  9. 3. Main results : 3.1 technical results –reliability assessment • 1] Safety study : • Market review of available safety devices & other protective measures • Safety study for identifying the hazards & safety aspects of the pipework systems 2] Pressure loss study : pressure loss & representative configuration dimensioning study within several European pressure architectures • Conclusions : • no motivation to reject any studied technique because appropriate safety measures (active or passive) can compensate any recorded safety weakness • elevated pressure gas supply systems recommended

  10. 3. Main results : 3.1 technical results – safety study

  11. 3. Main results : 3.2 economical results • Aim of the study : • To determine whether the assessed techniques are competitive with the traditional ones (brazed copper) • labour costs : from to 30 % up to 50 % saving installation time • material costs : use the smaller pipe diameter as possible • use the lower number of fittings (e.g. PEX and ML bending up to 25 - 26 mm) • environmental costs : better than with copper (energy consumption, gas releases, green house effect from raw material production to waste disposal) Conclusions : all competitive versus copper

  12. 3. Main results : 3.3 pilot installations • Aim of the study : • to get field implementation feedback ; to point out any difficulty (if any) • Problems we faced : • administrative acceptance • flat owner acceptance • France (within Gaz de France workshop) : focus on system comparison & technical advantages ; measurement of installation time versus copper • Spain (near Madrid) : only in CSST • Norway (Lillehammer) : Uponor Wirsbo PEX versus copper Conclusions : installation easiness, installation time savings, needed safety precautions, installer training on new techniques

  13. 3. 3 Pilot installations in France Pilot installations in France

  14. 4. DIGBUILD public deliverables • Specification drafts : • Digbuild work package results • one per technique • CEN standard layout • Final report • summary and main results of each confidential deliverable • Conclusions : the 3 assessed innovative piping techniques are suitable for gas installations for gas supply inside building • with possibility for each manufacturer to improve the competitiveness of his system for the intended utilisations

  15. 5. Standardisation process • Functional standardisation : • revised prEN 1775 (CEN/TC 234) : gas supply inside buildings mention of the 3 techniques • (notably recommendations in informative annex for jointing with press fittings or CSST) • Product standards : • ISO/DIS 17484-1: ML (Multi-layered pipe systems for indoor gas installations with a maximum operating pressure up to 5 bar) ; • prEN 15266 : CSST (stainless steel pliable corrugated tubing systems in buildings for gas with an OP up to 0,5 bar)

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