LIFE CYCLE COST PADA GEDUNG BOARDING HOUSE DAERAH GLAGAHSARI, YOGYAKARTA

Life cycle cost merupakan alat untuk mengontrol biaya dengan estimasi dasar dari awal perencanaan gedung, tidak sampai di perencanaan saja tetapi pemeliharaan setelah paskah pembangunan juga dihitung sesuai umur gedung, maka sangat penting untuk melakukan Life Cycle Cost Analysis pada awal perencanaan desain infrastruktur, terutama bangunan gedung. Berdasarkan konsep dari Life Cycle Cost ada enam tahapan dalam melakukan proyek konstruksi yaitu, tahap perencanaan, tahap perancangan, tahap pengadaan, tahap pelaksanaan, tahap pemeliharaan dan analisis nilai akhir. Untuk dapat menghitung Life Cycle Cost terdapat komponen yang terdiri dari biaya awal, biaya perawatan, biaya operasional,biaya penggantian dan perubahan fungsi, dan salvage value. Dengan adanya komponen tersebut dapat diketahui biaya yang akan dikeluarkan untuk tiap komponen atau elemen bangunan. Tujuan dari studi ini adalah untuk mengetahui apa itu Life Cycle Cost dan untuk menghitung biaya bangunan dengan jangka waktu 25 tahun dengan menggunakan metode Life Cycle Cost Analysiss. Studi dilakukan pada bangunan kost yang berada di Glagahsari, Yogyakarta. Estimasi biaya keseluruhan gedung dengan metode Life Cycle Cost yang dilakukan pada bangunan kos yang berlokasi di Glagahsari terbagi menjadi tiga kelompok estimasi biaya yaitu initial cost sebesar Rp. 1.261.887.141 dengan persentase 54,97%, maintanance cost sebesar Rp. 427.879.959 dengan persentase 18,64%, dan operational cost sebesar Rp. 605.914.200 dengan persentase 26,39%.

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A Life Cycle Cost Analysis Approach for Selection of a Typical Heavy Usage Multistage Centrifugal Pump

Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology ◽

10.1115/esda2006-95213 ◽

2006 ◽

Cited By ~ 1

Author(s):

Laxman Y. Waghmode ◽

Ravindra S. Birajdar ◽

Shridhar G. Joshi

Keyword(s):

Life Cycle ◽

Cost Analysis ◽

Centrifugal Pump ◽

Life Cycle Cost ◽

Lifetime Cost ◽

Maintenance Cost ◽

Life Cycle Costs ◽

Life Cycle Cost Analysis ◽

Initial Cost ◽

Multistage Centrifugal Pump

It is well known that the pumps are the largest consumers of industrial motor energy and account for more than 25% of electricity consumption. The life cycle cost of a pump is the total lifetime cost associated with procurement, installation, operation, maintenance and its disposal. For majority of heavy usage pumps, the lifetime energy and/or maintenance cost will dominate the life cycle costs. Hence a greater understanding of all the cost components making up the total life cycle costs should provide an opportunity to achieve a substantial savings in energy and maintenance costs. This will further enable optimizing pumping system efficiency and improving pump and system reliability. Therefore in this context, the life cycle cost analysis of heavy usage pumps is quite important. This paper focuses on an application of a methodology of determining the life cycle cost of a typical heavy usage multistage centrifugal pump. In this case, all the cost components associated with the pump-set have been determined and classified under different categories. The data with regard to initial investment costs, operation costs, maintenance and repair costs and disposal costs for the pump considered for this case study was collected from the concerned pump manufacturer along with the unit cost of each component, quantity used and their weights. By applying the principles of reliability and maintainability engineering and using the data obtained from the design, manufacturing and maintenance departments, the component-wise values of MTBF (Mean Time Between Failures) and MTTR (Mean Time To Repair) were estimated. The results of the life cycle cost analysis of the specimen pump were compared with the life cycle costs of similar pumps reported in the literature. From this comparison of results, it can be concluded that, the initial cost of the pump is the only a fraction of the total life cycle cost. The operating cost of the pump dominates the life cycle costs especially in case of heavy usage pumps. The maintenance cost varies approximately from 0.6 to 2.5 times the initial cost of the pump. The life cycle cost of the pump varies approximately from 12 to 33 times the initial cost of the pump. The operation and maintenance cost is almost 92 to 97 per cent of the life cycle cost. The detailed analysis carried out in this paper is expected to provide guidelines to the pump manufactures/practicing engineers in selecting a heavy usage multistage centrifugal pump based on the total lifetime cost rather than only on initial price.

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