1 / 18

Laws and technical rules of DVGW as a guarantee of a safe gasinstallation in the long term

UTIL-GI-05-05. Laws and technical rules of DVGW as a guarantee of a safe gasinstallation in the long term. D189. Legal safety requirements. Directive on common rules for the international market in natural gas. Energy law § 16. requirement to the member state:

irving
Download Presentation

Laws and technical rules of DVGW as a guarantee of a safe gasinstallation in the long term

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. UTIL-GI-05-05 Laws and technical rules of DVGW as a guarantee of a safe gasinstallation in the long term D189 Meeting Marcogaz – 2005-01-21- Page 1

  2. Legal safetyrequirements Directive on common rules for the international market in natural gas Energy law § 16 • requirement to the member state: • Each gas utility shall operate, maintain and complete its own gasinstallation which shall be: • safe • reliable and • ensuring the adequate capacity • requirement to the operator: • Guarantee of the technical safety of energy using installations • Fulfillment of the general technical rules • Consideration of the DVGW technical rules Meeting Marcogaz – 2005-01-21- Page 2

  3. German Energy Lawas DVGW - Legitimation Ordinance „AVBGasV“, § 12, Specifications contract for gas supply from the gas • Utilization of DVGW-rules • G 600 DVGW-TRGI, Technical regulations for gas installations: • pipework installation • gas appliance installation • flue gas systems • operation Utilization of certified components and appliances e. g. DVGW-Certificate CE-Certificate Responsibility of the customer for all gas installation down-stream of the point of delivery Construction, Modifica-tion of gas installations exclusively by authorized gas installation companies- each gas installation to be reported to the gas utility - gas utilities may check the gas installation on site (no obligation) Meeting Marcogaz – 2005-01-21- Page 3

  4. DVGW-TRGI Gas pipework installation incl. gas appliance connection Basic idea: gas pipework shall be long-term tight and shall not lead to an explosion in case of an external fire Resistance to high temperatures (HTB-Quality)1. Test criteria: 650 °C, 30 min. (oven test) or 2. special materials and requirements on construction metallic pipework 1. steel: welded, threaded, mechanical, flanged or pressed joints (SST) 2. copper: brazed or pressed joints components (meters, regulators, …) in HTB-quality thermical triggered shut off valve in front of gas appliances Meeting Marcogaz – 2005-01-21- Page 4

  5. DVGW-TRGI Gas appliances no release of unburned gas 1. flame failure device 2. cookers without a flame failure device: additional ventilation no flue gas release in dangerous quantities into the boiler room1. basic idea: all appliances connected to a flue gas systems (except of radiant heaters, cookers) 2. sufficient combustion air supply - on site requirements (windows, doors, …) - measurement methods for critical situations 3. gas appliances with draught diverters: flue gas sensor BS 4. room sealed gas appliances (concentric air/flue gas systems) Meeting Marcogaz – 2005-01-21- Page 5

  6. How to get the license as on authorized installation company Meeting Marcogaz – 2005-01-21- Page 6

  7. Test procedures (installation and operation)– Gas pipework Meeting Marcogaz – 2005-01-21- Page 7

  8. Assessment procedures for gas pipework being operated (not new installations) • Unrestricted fitness for purpose • measured value: leakage rate < 1 e/h • measure taken: the pipework allowed to be operated • restricted fitness for purpose • measured value: leakage rate > 1 e/h and < 5 e/h • measure taken: within 4 weeks the tightness shall be restored • no fitness for purpose • measured value: leakage rate > 5 e/h • measure taken: the pipework is immediately to put out of service. Regarding the reinstated pipe work the requirements for new installations apply. Meeting Marcogaz – 2005-01-21- Page 8

  9. Test procedures (installation and operation)– Gas appliances Meeting Marcogaz – 2005-01-21- Page 9

  10. Prohibition of simultaneous operation of appliances type B and fans exhausting to the outside or:measures according to G 670 (e.g. safety device according to VP 121) Meeting Marcogaz – 2005-01-21- Page 10

  11. specific measures for accident prevention • Collection of statistics for accidents/incidents • Development of a comprehensive concept with as principal items: • causes • target groups • Intensified training, information • Co-ordination committee „Technical safety“ • Assessment and possible action • Transparency Meeting Marcogaz – 2005-01-21- Page 11

  12. Number of accidents on customer installations (UK) in the context of structural tendencies Meeting Marcogaz – 2005-01-21- Page 12

  13. customer, installer, chimney, sweeper customer(perpetrator) Quelle: DVGW Statistik Gas / Stand 12/2003 Ab 1991 Gesamtdeutschland customer installer customer customer deliberate actions, manipulation technical faults wrong installation Do-it-yourself modifications not allowed (unintended Causes for accidents depending on target groups --- customer installations --- (∑ 1981 – 2003) wrong operationnecessary maintenance omitted Meeting Marcogaz – 2005-01-21- Page 13

  14. Evolution of accidents depending on reasons/causes currently ca. 17 Mio. customer installations (averaged) Meeting Marcogaz – 2005-01-21- Page 14

  15. „TRGI-Operation“as a part of DVGW-TRGI • guidance for operation and maintenance gas installations • guidance on consequences resulting from construction works in the building for gas installations • Behaviour in case of disturbances or gas odour • Behaviour in case of gas odour inside the building • Behaviour in case of gas odour in the open air • Behaviour in case of release of flue gases in connection with appliances type B as a result editing of a brochure for customer information, e.g. „household spot check“ Meeting Marcogaz – 2005-01-21- Page 15

  16. Customer-information Meeting Marcogaz – 2005-01-21- Page 16

  17. Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No No Service valve and meter freely accessible? Are pipes in faultless condition and properly placed? Are pipes well-fixed and not encumbered by foreign objects? If pipes are hidden, do ventilation openings exist? Are all openings for access of combustion air free of obstructions? Sufficant access of combustion air after work on windows or doors to improve insulation? Specialist consulted before installing dryers or kitchen store fans exhausting to the exterior? Flexible hose from cooker to gas socket installed without tension and not imposed to higher temperatures (flames)? When flame is visible on gas appliance, is the flame burning with a continuous blue colour? Is there no malfunction on the appliance, no trace of soot, no extraordinary smell or noise? one or several no consult a specialist No yes If exclusively yes o. k. Yes Safety: It is in your hands Meeting Marcogaz – 2005-01-21- Page 17

  18. Obligation for the gas utilities in future • Implementation of TRGI – Operation as prevention against an unsure behaviour of the customer - Information brochure to all customers (notice on odorization to all customers) - concerted action with the specialised companies (authorized gas installation companies) Meeting Marcogaz – 2005-01-21- Page 18

More Related