News on the DVGW Technical Rules - Gas

New publications

G 493-1, draft version "Qualification criteria for designers and manufacturers of gas measurement and pressure reduction stations and biogas injection plants" Publication date 12/11, EUR 20.59 (DVGW members), EUR 27.45 (non-members), Available in German only Quality, safety and security have always been given top priority by the gas industry and are to continue to enjoy this supremacy in the future. The certification of companies is an important prerequisite to meet this ambition. Such certification is based on DVGW Code of Practise G 493-1, whose 5th edition is now submitted as a draft version to the technical public for review and carries an objection period. DVGW Code of Practise G 493-1 describes the staff and factual requirements on companies designing and/or manufacturing         gas measurement and pressure reduction stations in accordance with DVGW Codes of Practise G 491 und G 492 and / or         biogas injection plants in accordance with DVGW Test Specification VP 265-1    (hereinafter called gas installations) and setting them up ready for operation.    The qualification requirements for companies designing and/or manufacturing biogas injection plants and setting them up ready for operation have been newly incorporated into this Code of Practise; they also cover the pertinent requirements for gas measurement and pressure reduction stations.   Past experience has shown that gas installations designed by non-certified companies have repeatedly given rise to discussions. In order to also offer companies exclusively concerned with the design of gas installations an opportunity for certification, group 3, "Design", has been newly incorporated into this Code of Practise. Only companies certified in accordance with group 1 or 3 are allowed to design gas installations; this stipulation fills a gap that had hitherto existed in the DVGW Technical Rules. What is more, the more concretely specified explosion protection requirements that are also mentioned in DVGW Code of Practise G 491 have also been accommodated.    Companies commissioned with designing, manufacturing, setting up ready for operation and maintaining gas measurement and pressure reduction stations and biogas injection plants shall have the required competence and produce proof thereof. The competence of a company manufacturing such installations is present if the company complies with the requirements of DVGW Code of Practise G 493-1, and shall be deemed proven if the company is in possession of the pertinent certificate in accordance with DVGW Code of Practise G 493-1.    Companies that as part of their business design, manufacture and set up gas installations and operate and maintain them either autonomously or as subcontractors or that exclusively set up and maintain energy systems and that have proven in the course of a TSM test in accordance with DVGW Code of Practise G 1000 that their staff are suitably qualified and organised for the purpose are allowed to perform without certification in accordance with said Code of Practise all of the above within the confines of the network area defined in the TSM confirmation. This, however, is subject to their meeting the staff and technical requirements defined in DVGW Code of Practise G 493-1. The responsible in-house experts shall be appointed in writing.   The qualification criteria listed above are a prerequisite for certifying companies that design, manufacture and set up gas installations. All general, certification-relevant requirements as well as the code of practise governing the certification process are stipulated e. g. in the "Rules of procedure governing the certification of expert companies" of the DVGW CERT GmbH and shall at least comply with these requirements. The certificate serves the purpose of proving vis-a-vis the customer concerned that the company is qualified to execute the work.   Notwithstanding the above, the technically flawless design, manufacture and setting up of gas installations shall continue to be a prerequisite for the safe and secure supply of gas. This requirement can be met only if the work is performed by companies certified for manufacturing gas installations in accordance with this DVGW Code of Practise. Any exceptions to this rule are described in the section called "Scope".   The existing certification procedure may be used for pre-qualification purposes at the European plane on the basis of Directive 2004/17/EC of 31 March 2004 which coordinates the procurement procedures of entities operating in the water, energy, transport and postal services sectors.   Objection period ends on 30/03/2012

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Information bulletins

Gas information bulletin no. 7 "Technical specification for implementing digital interfaces for gas measurement devices" 6th edition, publication date 11/2011, free download This "Technical specification for implementing digital interfaces for gas measurement devices" complements DVGW Code of Practise G 485 "Digital interface for gas measurement devices" in such a way as to permit the development of circuits and operating programs (hardware and software) for gas measurement devices and auxiliary equipment capable of accommodating a digital interface. The strategy of updating the Technical Specification at hand every two to three years has proven successful. Changes in the gas market and the ensuing technical requirements, in particular with regard to monitoring and data communication, made it necessary to incorporate the following specifications into the 6th edition:   Backup of data fields by means of a digital signature using the PTB telegram field.   New data field lists for the audit and RDT entities.   Editorial amendments and corrections. September 2011 marked the deadline for the 6th edition. As the digital interface in accordance with the Technical Specification for implementing digital interfaces for gas measurement devices [DSfG] is still a standard observed by the German gas industry, the "Technical specification for implementing digital interfaces for gas measurement devices - maintenance [DSfG]" working group continues to collect and harmonise in the specification at hand any technical market changes. On account of the wealth of existing specifications, the 4th revision of this Technical Specification presented an opportunity to split up the entire document into three more manageable parts, all of which are available to download from the DVGW website.

DIN Standards

Withdrawals

New DVGW Constitution to download   DVGW Constitution with membership fee regulations 2012/2013   Rules of Procedure of the DVGW regional groups   Rules of Procedure of the DVGW/DELIWA district groups Adopted at the 141st General Meeting on 6th July 2011 in Bonn Download Constitution

News on the DVGW Technical Rules - Gas/water

New publications

DVGW Regional Group Bavaria now online You can visit the DVGW Regional Group Bavaria here: www.dvgw-bayern.de  All DVGW regional groups are now represented on the internet with their own website.  Please go to these websites to obtain regionally relevant information from the DVGW!   Overview of the DVGW regional groups

News on the DVGW Technical Rules - Water

New publications

wat 2012 in Dresden - Save the Date The wat 2012 takes place on September 24 and 25, 2012 in Dresden. Please save the date! (Click on "date" button to reserve the date)