Improved limits on β+EC and ECEC processes in 74Se

New limits on β+EC and ECEC processes in 74Se have been obtained using a 600 cm3 HPGe detector and an external source consisting of 1600 g of a natural selenium powder. For different β+EC and ECEC transitions (to the ground and excited states) obtained limits are on the level ∼(0.2−4.8)×1019yr at 90% C.L. In particular, for the potentially resonant transition into the 1204.2 keV excited state of 74Ge a lower half-life limit of 1.1×1019yr at 90% C.L. has been obtained. Possibility to increase the sensitivity of such measurements is discussed.