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Gas testing / certification
G 493-1 Code of Practice 09/2012
55,79 €*
This Code of Practice G 493‑1 serves as a basis for certifying and awarding the DVGW certification mark to specialised companies that design, manufacture and set up turn‑key gas pressure regulating and gas measuring stations. Quality, safety and security have always been given top priority by the gas industry, and this shall continue to be so in the future. Company certification is indispensable for meeting this goal; this 5th edition of this Code of Practice provides the basis for certification. This Code of Practice describes not only the qualification criteria to be met by the relevant companies but also ‑ and in some more detail ‑ the fields of work in which appointed experts have to demonstrate particular knowledge. The fact that the Energy Industry Act (EnWG) has now broadened the meaning of the term ?biogas? to include hydrogen from renewable sources has created new qualification requirements for appointed experts. These requirements shall be amended if, when and as href= https://shop.wvgw.de/508694 >here. requirements set forth in this Code of Practice are eligible for certification.
G 493-2 Technical Rule - Standard 11/2019 -PDF-File-
55,79 €*
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).
GW 335-A6 Technical Requirements 12/2015
55,79 €*
Testing and Approval of Devices have been prepared by the project group ?Plastics in Gas and Water Supply Systems? on behalf of the Technical Committees on ?Gas Distribution?, ?Gas Transmission Lines? and ?Water Supply System Components?.
GW 381 Technical Rule - Standard 05/2015
35,91 €*
For the purposes of this Standard GW 381, the term ?minimum requirements? implies that further requirements canensue from technical rules and legal provisions and/or that the ordering party may stipulate further requirements,in particular in the presence of special features or needs for protection or other constraints. Theoptional criteria shall, without claiming to be exhaustive, be considered guidance for the ordering partywho shall decide on the need for further requirements.If a company consists of several units, this technical rule applies to the units in charge of undergroundconstruction and, without exception, to independent subsidiaries as well. A subsidiary shall be assumed tobe independent if, in effect, it actually controls most operations and/or if the head office of the company isunable to provide the supervision of the staff and the construction sites as required.