TY - JOUR AU - Saputro, Erwan Adi AU - Ichda, Auliya AU - Gemilar, Gelar Panji AU - Sanjoyo, Bandung Arry PY - 2022 TI - ANALISIS ALIRAN MASSA UAP PADA KATUP KONTROL UREA (UREA GLOBE CONTROL VALVE) DI UNIT PRODUKSI UREA PABRIK 1B PT PETROKIMIA GRESIK JF - ROTOR; Vol 15 No 1 (2022) DO - 10.19184/rotor.v15i1.31079 KW - N2 - In a process, industrial plants have several tools that require steam to help run the processing of a material. For the heating process, PT. Petrokimia Gresik requires steam . Sometime the steam leak during the process, so it reduces the productivity of this industry. For that reason, t he purpose of this calculation is to find out the steam loss during the process, especially in urea globe control valve (PV-723, PV-726 , PV-735 ). The result show that the upstream pressure and temperature at PV-723 are 21 kg/cm 2 G and 307 o C, upstream pressure and temperature in PV-726 are 5 kg / cm 2 G and 158 o C, upstream pressure and temperature on PV-735 of 2.5 kg / cm 2 G and 138 o C. For downstream pressure on all valves is 1.03323 kg/cm 2 G . The obtained mass flow (F) in each valve is 0.514 tons / hr, 0.86 tons / hr and 1,902 tons / hr. The value of the input mass balance of steam in the system is 82.70 tons/hour and the overall output is 74.11 tons/hour. Therefore, the total steam loss in  PV-723, PV-726, and PV-735 is around 8.59 tons/hour which mean there are some leak during the process that need to do further investigation. UR - https://jurnal.unej.ac.id/index.php/RTR/article/view/31079