Development of safety system in salmon fish farms of the Murmansk region O. A. Ivanitskaya, N. R. Kalinina, P. P. Kravets, E. V. Shoshina and A. V. Malaeva BIO Web Conf., 52 (2022) 00072 Published online: 21 September 2022 DOI: 10.1051/bioconf/20225200072