What is class 35.24, storage of gas as part of network supply services?

Class 35.24 covers storage of gas as part of network supply services. It was created in the restructuring of group 35.1 and group 35.2 in NACE Rev. 2.1, as paragraph 151 states. Its explanatory note includes storage of gaseous fuels and storage of hydrogen gas, with exclusions to other classes. The class is statistical only, and it does not determine a code for a specific reader.

What does the note include?

The note includes storage of gaseous fuels, and storage of hydrogen gas. The inclusion is short, and the title supplies the qualifying words: as part of network supply services. The class therefore covers gas storage that forms part of the network supply of gas, in group 35.2, manufacture of gas and distribution of gaseous fuels through mains, rather than gas storage in general. The group context is part of the definition, and the note must be read with the group note, which states that the group includes manufacture of gas, storage and distribution of natural or synthetic gas to the user through a system of mains. A storage activity that is not part of network supply services falls outside the class, as the exclusion below states.

The inclusion of hydrogen gas deserves attention, because hydrogen storage is named separately from gaseous fuels in general. The separate naming means that hydrogen storage, as part of network supply services, sits in the class alongside storage of other gaseous fuels. The note does not state a separate class for hydrogen storage, and it does not state that hydrogen storage outside network supply services belongs in the class. The qualifying words in the title govern both parts of the inclusion, and the note for class 52.10, warehousing and storage, states the destination for storage outside network supply, as the exclusion below records.

What does the note exclude?

The note excludes gas liquefaction for mine site transport to class 09.10, and storage of gaseous fuels, not part of network energy supply services, to class 52.10. The two exclusions draw the two boundaries of the class. The first boundary separates network gas storage from mining support work, where gas liquefaction for transport to a mine site sits in the mining support division. The second boundary separates network gas storage from general warehousing and storage, where gas storage that is not part of network supply sits in division 52, warehousing and support activities for transportation. The exclusions show that the class is defined by its network context, not by the act of storing gas alone.

The network context also separates class 35.24 from class 35.16, storage of electricity, even though the two classes share the word storage and sit in the same division. Electricity storage is a conversion, storing and reconversion cycle, as its note states. Gas storage is storage of a fuel as part of network supply, as its note states. The two storage classes are parallel in form and different in content, and neither note should be read as defining the other. The notes for both classes, and the group notes for groups 35.1 and 35.2, must be read together before the storage work in division 35 is described in general terms.

How is the class placed in the hierarchy?

| Level | Identifier | Title |

|---|---|---|

| Section | D | Electricity, gas, steam and air conditioning supply |

| Division | 35 | Electricity, gas, steam and air conditioning supply |

| Group | 35.2 | Manufacture of gas, and distribution of gaseous fuels through mains |

| Class | 35.24 | Storage of gas as part of network supply services |

The table follows the detailed structure. The class sits in group 35.2, not in group 35.1 with the electricity storage class, because the network whose supply it serves is the gas network. The group placement is part of the definition, and the table states it expressly so that a reader does not group the two storage classes together on the strength of the shared word storage. The note states the content, and the correspondence table states how the class relates to the old structure.

What does a new class not decide?

A new class is a new heading in the published classification. This decides nothing for a specific unit, and guarantees nothing about an activity previously held in an old class belonging in the new class. Old classes that previously held the work are related to the new class by the correspondence table, while inclusions and exclusions for the new class are given in its explanatory note. The classification is statistical only. The code decides no question of tax, licensing, social security, collective agreements or funding, and the entry is confirmed only by the institute or register that holds it.

Where is a new class confirmed?

The check for a new class runs in three steps. First, the section 4 summary in the manual for the creation as adopted. Second, the explanatory note for the class, for inclusions and exclusions. Third comes the institute or register holding the entry actually held. The first step is supplied here, and the other two are pointed to.

Keep gas storage inside network supply in class 35.24, keep other gas storage in class 52.10, and confirm the entry with the institute or register that holds it.