Gas management
With its body of rules and regulations, the DVGW creates the framework for the systematic further development of existing processes. This section focuses on topics such as risk and crisis management, security of supply, IT security or technical safety management at companies.
Content of DVGW G 102-5 Code of Practice G 102-5 serves as the basis for the qualification of qualified persons for pressure vessels. Certain qualified work may only be carried out by qualified persons. The qualified person shall acquire the necessary knowledge through theoretical training and practical instruction and experience. DVGW Code of Practice G 102-5 specifies the minimum requirements for the scope of the necessary personnel qualifications and the content of the corresponding training courses. Table of contentForeword 1 Scope 2 Normative references 3 Requirements for the qualification of qualified persons for the area of pressure vessels/pressure vessels under pressure 4 Implementation of the expert training 5 Contents of the expert training course 6 Success control 7 Technical requirements for instructors and inspectors Important normative references DVGW Code of Practice G 100DVGW Code of Practice G 495German versionDVGW-Arbeitsblatt G 102-5Buy DVGW G 102-5 Code of Practice You can purchase DVGW G 102-5 Code of Practice as PDF file for immediate download.
Content of DVGW Final Report G 202333 In connection with the new construction or conversion of high-pressure gas pipelines, proof of the suitability of the materials used must be provided as part of extensive fracture mechanical tests in accordance with DVGW regulations - depending on the design and the materials used. This currently applies both to the high-pressure range and formally to the low-pressure range. In order to simplify the previously required process, the DVGW initiated the BAG464 research project, with the aim to identify a boundary for the sensible application of fracture mechanical assessment. As part of the project, fracture mechanical assessments were carried out for typical design parameters for both the distribution network and the transport network. The investigations identify an area in which - taking conservative boundary conditions into account - fracture mechanical assessments do not provide any added value for the safe design of the pipelines. The identified range fulfils several criteria for safe design and shows, that in particular for a maximum allowable operating pressure (MOP) p ≤ 16 bar, a fracture mechanical assessment only needs to be carried out in very rare exceptions. For MOP 12 bar < p ≤ 16 bar, no fracture mechanical assessments are required up to and including DN 200. For larger diameters, individual case analyses must be carried out. Below MOP p ≤ 12 bar, no fracture mechanical assessments are generally required, if the described boundary conditions are met - regardless of the pipe outside diameter and steel material. For high-pressure gas pipes with MOP p > 16 bar, however a fracture mechanical assessment can only be dispensed with in a few exceptions. These exceptions are limited to smaller pipe diameters and/or smaller MOP. Table of Contents 1 Task definition 2 Basic procedure for carrying out fracture mechanical tests 3 Analysed Materials 4 Results of the fracture mechanical evaluation 4.1 Design according to DVGW Code of Practice G 462, DIN EN 12007-3, p ≤ 16 bar 4.2 Design for stations in accordance with DVGW Code of Practice G 491, DIN 30690-1 4.3 Design according to DVGW Code of Practice G 463, DIN EN 1594, high-pressure range p > 16 bar 5 Conclusions and outlook 6 References 7 List of Figures 8 List of tables 9 List of symbols Annex Important normative references G 464 Guideline German Version DVGW-Forschungsbericht G 202333 Buy DVGW Final Report G 202333 You can purchase DVGW Final Report G 202333 as PDF file for immediate download.
Content of DVGW Code of Practice G 1030 DVGW Code of Practice G 1030 sets out the requirements for the operators of stations for the production, transport, upgrading, conditioning or injection of biogas, irrespective of the ownership structure and organisational form, with regard to the structural and process organisation. Sufficient qualification and organisation of the operators is a prerequisite for ensuring the planning, construction, operation and maintenance of the respective biogas stations, also in compliance with safety and environmental regulations. G 1030 specifies the requirements of the Energy Industry Act (EnWG) for the qualification and organisation of operators of plants for the production, storage, transmission, upgrading, conditioning or injection of biogas or biomethane. According to the EnWG, this also includes hydrogen from renewable sources. DVGW Code of Practice G 1030 has been extensively revised, restructured and changes have been madein almost every section. Only major new topics are therefore listed below. Compared to DVGW Code ofPractice G 1030:2010-12, the following changes have been made in particular: Inclusion of hydrogen from renewable sources in the scope of application in accordance with theEnWG Inclusion of power-to-gas energy systems in the scope of application in accordance with DVGWCode of Practice G 220 Definition of power-to-gas energy plants, hydrogen feed-in plants, biogas and biomethane, contractualpartners (incl. operators, service providers, cooperation partners) Integration of biogas conditioning system into biogas feed-in plant Table of contents Foreword Authors 1 Scope 2 Normative references 3 Terms, symbols, units and abbreviations 4 Basic requirements 5 Tasks and fields of activity 6 Organisation 7 Personnel 8 Contractual partner 9 Technical equipment Important normative references DVGW Code of Practice G 213DVGW Code of Practice G 260DVGW Code of Practice G 415DVGW Code of Practice G 492DVGW Code of Practice G 495 German version DVGW-Arbeitsblatt G 1030 Buy DVGW Code of Practice G 1030 You can purchase DVGW Code of Practice G 1030 as PDF file for immediate download.
Content of DVGW Information GAS No. 29 This DVGW Information GAS No. 29 provides an overview of the requirements that must be met for the use of hydrogen in systems for the pipeline-bound supply of the general public and the connected gas applications so that these can be labelled "H2-ready". In this DVGW Information GAS No. 29, a model is proposed to visualise the different levels of assessment in order to classify statements on the readiness of infrastructures for the grid-based supply of hydrogen. The term "H2-ready" is used to describe this readiness for hydrogen use, which is explained in the respective context in this DVGW Information GAS No. 29. The proposed model can also be applied analogously to new or existing plants for operational self-supply in which hydrogen is to be used, taking into account the specific legal requirements. Safe operation with the hazardous substance natural gas is already guaranteed for gas supply networks and gas applications. If a natural gas network is converted into a hydrogen network, the same level of safety can be guaranteed if the DVGW Codes of Practice applicable to hydrogen are taken into account - without prejudice to other legal requirements. Table of contents Foreword 1 Scope 2 DVGW Codes of Practice 3 Terms and definitions 4 Model for the application of the term "H2-ready" 5 Assessment of the gas infrastructure and gas applications Anhang A - Overview of important DVGW Set of Rules and the supporting H2 guidelines Bibliography German version DVGW-Information GAS Nr. 29 Buy DVGW Information GAS No. 29 You can purchase DVGW Information GAS No. 29 as PDF file for immediate download.
This standard G 493-2 encompasses personal and professional requirements for companies providing maintenance for gas plants and installations that fall within the scope of DVGW G 495 (A), as well as biogas injection and refeeding plants as specified by DVGW G 265-2 or hydrogen injection plants as specified by DVGW G 265-4 (M).Companies which, within the context of comprehensive plant management, either as original operators or as contractors, are responsible for the maintenance of energy plants, and possess the required personal qualification and organization according to DVGW G 1000 (A), may conduct the maintenance of gas plants without certification as defined by this standard within the network which they have the abovementioned responsibility for. The prerequisite for the maintenance without certification as mentioned above is that the expert and tech-nical conditions detailed in this standard are met by the company’s own workforce or by service providers with a TSM certification or other corresponding certifications. The company shall appoint the experts re-sponsible for maintenance in writing. The fulfilment of these conditions can be verified e.g. during a TSM review according to DVGW G 1000 (A).
This document DIN CEN TR 17797 is written in preparation of future standardization and provides guidance on how injection of H2 into the gas infrastructure can impact processes from the input of gas into the on-shore transmission network up to the inlet connection of gas appliances.
