Toshiba Corp. is considering spinning off more key operations such as infrastructure systems to keep its shaky financial standing from affecting its healthy businesses, people familiar with the matter said Tuesday.

Its financial problems are clouding the prospects for a renewal in December of a government permit that allows Toshiba to undertake large-scale construction projects, according to the sources. Such permits are revoked if companies cannot meet capital and other financial requirements.

Toshiba is in the midst of a severe financial crisis caused by losses at its nuclear power business. The company has already sold its medical business and spun off its chip operation as part of broad restructuring.