TURQUOISE HILL RESOURCES LTD.
Notes to the consolidated financial statements
(Stated in U.S. dollars unless otherwise noted; tabular amounts in thousands unless otherwise noted)
2. | | Summary of significant accounting policies (continued) |
| (j) | | Impairment ofnon-current assets |
Property, plant and equipment is reviewed for impairment when events or changes in circumstances indicate that the full carrying amount may not be recoverable.
Impairment is assessed at the level of cash-generating units which are identified as the smallest identifiable group of assets capable of generating cash inflows which are largely independent of the cash inflows from other assets. When an impairment review is undertaken, the recoverable amount is assessed by reference to the higher of value in use and FVLCD.
The value in use is the net present value of expected futurepre-tax cash flows from the relevant cash-generating unit in its current condition, both from continuing use and ultimate disposal. For value in use, recent cost levels are considered, together with expected changes in costs that are compatible with the current condition of the business and which meet the requirements of IFRS.
The best evidence of FVLCD is often the value obtained from an active market or binding sale agreement. Where this is not the case, or where neither an active market nor a binding sale agreement exists, FVLCD is based on the best information available to reflect the amount a market participant would pay for the cash-generating unit in an arm’s length transaction. This is often estimated using discounted post tax cash flow techniques based on detailedlife-of-mine and/or production plans.
The cash flow forecasts are based on management’s best estimates of expected future revenues and costs, including the future cash costs of production, capital expenditure, closure, restoration and environmentalclean-up, which for FVLCD purposes management believe approximate those of a market participant.
Forecast cash flows for impairment purposes are generally based on management’s price forecasts of commodity prices, which assume short term observable market prices will revert to the Company’s assessment of the long term price, generally over a period of three to five years. These long-term forecast commodity prices are derived from industry analyst consensus.
The discount rates applied to the future cash flow forecasts represent an estimate of the rate the market would apply having regard to the time value of money and the risks specific to the asset for which the future cash flow estimates have not been adjusted.
Non-current assets that have previously been impaired are tested for possible reversal of the impairment whenever events or changes in circumstances indicate that the impairment may have reversed.
| (k) | | Decommissioning obligations |
The Company recognizes liabilities for statutory, contractual, legal or constructive obligations associated with the retirement of property, plant and equipment, when those obligations result from the acquisition, construction, development or normal operation of the assets. Initially, a provision for a decommissioning
17