Biyanto, T.R. and Natawiria, A.D.S. and Kusuma, F. and Musyafa, A. and Noriyati, R.D. and Costa, S.D. and Irawan, S.  (2015) The effects of test interval on safety instrumented function (SIF) according to Safety Integrity Level (SIL) value on three phase separator application.  In: UNSPECIFIED.