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AFNOR
NF EN 62054-21
En Vigor
2006-04-01
Electricity metering (a.c.) - Tariff and load control - Part 21 :
particular requirements for time switches
AFNOR
NF EN 303-5/IN1
En Vigor
2022-11-09
Heating boilers - Part 5: Heating boilers for solid fuels, manually and
automatically stoked, nominal heat output of up to 500 kW - Terminology,
requirements, testing and marking
AFNOR
NF EN ISO 4545-3
En Vigor
2018-03-07
Metallic materials - Knoop hardness test - Part 3 : calibration of
reference blocks
AFNOR
NF EN 12953-12
En Vigor
2004-07-01
Shell boilers - Part 12 : requirements for grate firing systems for
solid fuels for the boiler
