- 32 - Unit : Million Baht Separate financial statements As at December 31, 2020 Balances Additions Disposal/ Transfers Balances as at Write off in (out) as at January 1, December 31, 2020 2020 Cost Land and land improvement 10,901 - (15) 273 11,159 Buildings and building improvements 38,024 - (3) 1,400 39,421 Machinery and pipes 147,171 280 (61) 3,219 150,609 Tools and factory equipment 2,478 111 (88) 104 2,605 Furniture, fixtures and office equipment 1,099 18 (97) 121 1,141 Vehicles 503 - (2) - 501 Total cost 200,176 409 (266) 5,117 205,436 Accumulated depreciation Buildings and building improvements (16,891) (1,350) 1 - (18,240) Machinery and pipes (66,771) (7,020) 34 - (73,757) Tools and factory equipment (1,771) (144) 88 - (1,827) Furniture, fixtures and office equipment (878) (88) 97 - (869) Vehicles (421) (18) 2 - (437) Total accumulated depreciation (86,732) (8,620) 222 - (95,130) Assets under construction and assets under installation 5,852 2,780 (520) (5,117) 2,995 Less Allowance for impairment (80) (456) - - (536) Total property, plant and equipment 119,216 112,765 Depreciation for the years ended December 31, 2021 8,242 2020 8,620 For the year ended December 31, 2021, borrowing costs of Baht 42 million was included in the purchases of assets in the consolidated and separate financial statements (2020 : Baht 52 million in the consolidated and separate financial statements) arising from financing specifically for the construction of new factories. The Group used the capitalisation rates between 3.00 and 3.44 to calculate the capitalised borrowing costs. As at December 31, 2021 and 2020, costs of plant and equipment in the consolidated financial statements that were fully depreciated but still in use were Baht 15,675 million and Baht 10,902 million, respectively. As at December 31, 2021 and 2020, costs of plant and equipment in the separate financial statements that were fully depreciated but still in use were Baht 15,159 million and Baht 10,401 million, respectively. The Company considered to indefinitely postpone a project and reviewed the possibility of continuance for such project. Therefore, the Company recognized allowance for impairment of such project cost recorded in assets under construction of Baht 456 million for the year ended December 31, 2020. 334 IRPC PUBLIC COMPANY LIMITED 56-1 ONE REPORT 2021
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