2. A little history
1945 marked the start of post-war reconstruction, and 1946 the nationalization of the electricity and gas industries. The same year saw the publication of the first gas safety standard, NF P 45-201, dated March 31, 1946, aimed at the safe domestic use of gas. This is an important standard, as its architecture has since been used in all regulatory texts: terminology, purpose, general conditions for the installation of piping before and after the meter, shut-off devices, appliance installation conditions, supply of combustion air and evacuation of combustion products, commissioning (now gas supply or gas on-gas or gas on-gas) and installation certificate (now certificate of conformity).
As this standard was not mandatory, it was replaced by the decree of October 15, 1962, issued in application of the decree of May 23, 1962, concerning safety rules inside residential...
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A little history
Order of August 2, 1977 modified
DTU composition
The DTUs are mainly :
technical specifications (CCT), originally known as "cahiers des charges", which set out the technical conditions to be met by contractors in selecting and using materials for the various trades;
calculation rules that enable structures to be sized according to operating conditions or construction sites;
...
Composition of ATG specifications
The characteristics of tubes, fittings and filler alloys, as well as assembly conditions, are defined in ATG specifications:
B. 521 : Steel tubes and fittings - Filler alloys ;
B. 524: Copper tubes - Fittings - Means of assembly - Filler alloys.
Each specification has several parts....
Technical rules
Technical and safety rules applicable to fuel gas and liquefied hydrocarbon installations located inside residential buildings or their outbuildings:
Order of August 2, 1977 modified by orders of November 23, 1992, October 28, 1993, September 18, 1995, June 26, 1996, September 9, 1996, November 21, 1996, August 5, 1998 and February 5, 1999.
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