The board of Alstom India has approved the sale of its air pre-heaters and industrial mills (auxiliary components undertaking) business to OAK Energy India (the Indian entity specified by Triton) for Rs 51.3 crore.

The transfer and sale is as a going concern on a slump-sale basis for a lumpsum consideration in cash, without values being assigned to individual assets and liabilities, the company said in a filing to the stock exchange.