Property, plant and equipment
The most material items of property, plant and equipment are buildings and structures, and plant and equipment, mostly associated with exploration for and production of natural gas and crude oil, as well as with gas trading, storage and distribution. The Group also has vehicles and land. Tangible assets under construction include mostly capitalised expenditure on exploration for and evaluation of oil and gas deposits incurred until production commences or the assets are written off (for detailed accounting policies, see 'Exploration and evaluation assets’).
Material spare parts and maintenance equipment are disclosed as property, plant and equipment if the Group expects to use such spare parts or equipment for a period longer than one year and they may be assigned to specific items of property, plant and equipment.
Property, plant and equipment are carried at cost less accumulated depreciation and impairment (for information on policies governing the recognition of impairment, see Note 6.1.3.).
The initially recognised cost of gas pipelines and gas storage facilities (classified in buildings and structures) includes the value of gas used to fill the pipelines or facilities for the first time. The amount of gas required to fill a pipeline or a storage chamber for the first time equals the amount required to obtain the minimum operating pressure in the pipeline or chamber.
The cost of property, plant and equipment includes also borrowing costs.
Costs of day-to-day maintenance and repairs of property, plant and equipment are expensed as incurred. In the event of a leak, the costs of pipeline refilling or replacing lost fuel are charged to profit or loss in the period when they were incurred.