publication . Article . 2018

Triangle bracing system to reduce the vibration level of cooling tower – case study in PT Star Energy Geothermal (Wayang Windu) Ltd – Indonesia

Naresworo Nugroho; Wilis Wirawan; Khuschandra; Effendi Tri Bahtiar; Dede Hermawan;
Open Access
  • Published: 01 Jun 2018 Journal: Case Studies in Construction Materials, volume 8, pages 248-257 (issn: 2214-5095, Copyright policy)
  • Publisher: Elsevier BV
Abstract
Periodical control and measurement revealed that vibration level of motor and gearbox which was supported by Cooling Tower Unit 1 at PT Star Energy Geothermal (Wayang Windu) Ltd was significantly increasing since 2013. The vibration was not caused by machinery component failure, but induced by resonance of process flow. Decreasing stiffness of cooling tower structure was suspected causing the increasing vibration level. The physical, chemical, and mechanical properties of wood was deteriorated. The residual strength of the wood had been measured and the data was used to perform dynamic structural analysis on the cooling tower. Several scenarios of structure modi...
Subjects
free text keywords: Materials Science (miscellaneous), Vibration, Bracing, Residual strength, Cooling tower, Structural engineering, business.industry, business, Geothermal gradient, Flow (psychology), Resonance, Materials science, Stiffness, medicine.symptom, medicine, lcsh:Materials of engineering and construction. Mechanics of materials, lcsh:TA401-492
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