Hydro power major NHPC said it will temporary shut down 520 MW Parbati project in Himachal Pradesh till February next year for carrying out repair and maintenance work. The Parbati-III Power Station (4X130 MW) in Himachal Pradesh ¨shall be in complete shutdown w.e.f. December 15, 2015 to February 15, 2016 to carry out repair of pressure shaft, sealing of surge shaft gate & MIV seals and annual maintenance of units¨, NHPC said in a filing to the BSE.