Аннотация:The INTEGRAL core programme features a scan of the Galactic disc and deep exposures on the central Galactic radian and on the Vela region, including RX J0852.0-4622/GRO J0852-4642 (Vela Junior). These accumulated data can be used to estimate some of the characteristics of the Cas A and Vela Junior SNRs through the measurement of their 44Ti lines (68, 78 and 1157 keV). Furthermore the search for these lines in the surveys should reveal previously unknown young SNRs hidden at other wavelengths by the Galactic disc absorption or emission. The data on each SNR will give access to, or constrain, the expansion velocity, the age, the distance and the 44Ti yield. A refinement of the SNR rate in the Galaxy should also result. This paper presents simulations performed to estimate the potential of the INTEGRAL payload and of the core programme to fulfil these goals.