“…In the work of ) , Jabbarizadeh, Zandieh, & Talebi (2009 , Naderi, Zandieh, & Fatemi Ghomi (2009b) , Naderi, Zandieh, & Aminnayeri (2011) , Miyata, Nagano, & Gupta (2019b , Wang & Liu (2014) , Khatami & Zegordi (2017) and Seidgar, Zandieh, & Mahdavi (2016) , maintenance is scheduled according to a policy. The study by is the first to introduce the scheduling problem where the interval of the maintenance activities is determined preparatory to scheduling the jobs.…”