Yes, NCL being a registered person is eligible to avail unavailed Cenvat credit in respect of Capital goods in GST. As per the provisions of GST Law, A registered person, shall be entitled to take, in his electronic credit ledger, credit of the unavailed CENVAT credit in respect of capital goods, not carried forward in a return, furnished under the existing law by him, for the period ending with the day immediately preceding the appointed day in such manner as may be prescribed. Provided that the registered person shall not be allowed to take credit unless the said credit was admissible as CENVAT credit under the existing law and is also admissible as input tax credit under this Act.