KISITLAR TEOREMİ YAKLAŞIMIYLA YENİLİKÇİ TERSANE PROJE YÖNETİMİ GELİŞTİRİLMESİ

Year 2018, Volume: 10 Issue: 1, 1 - 18, 24.06.2018

Uğur Buğra Çelebi , Levent Bilgili

https://doi.org/10.18613/deudfd.428151

Cited By: 1

Abstract

Tersane endüstrisinde ağır koşullar altında zararlı
malzemelerle gerçekleştirilen üretim süreçleri için büyük bir işgücüne ihtiyaç
vardır. Gemi inşaa süreci, çelik levhaların kesimi ve işaretlenmesi, çelik
üretimi, blokların birleştirilmesi, kızakta inşa, geminin suya indirilmesi,
deneme seferleri ve geminin gemi sahibine teslimi alt süreçlerinden oluşur.
Blok üretimi tersanelerdeki en temel üretim sürecidir ve çok sayıda girdi ile
birbirine bağlı ve gemi yaşam döngüsünde kendisinden sonraki süreçleri etkileyen
alt süreçlerden oluşur. Bu yüzden verimli bir üretim süreci için iyi bir üretim
planlamasının yapılması gereklidir. Gelişmekte olan çevresel duyarlılık
nedeniyle yenilikçi yöntemlerin kullanılması da ayrıca önemlidir. Bu çalışmada
tekrarlayan üretim konseptine sahip bir tersaneden iş akışı ve çeşitli veriler
temin edilmiş olup kritik zincir, proje ve besleme stokları hesaplanmıştır.
Temin edilen değerler, hesaplamalar sonucunda elde edilen sonuçlarla
karşılaştırılmış ve yeni sonuçların daha verimli bir üretim süreci
oluşturulmasına katkıda bulunduğu tespit edilmiştir.

Keywords

Kısıtlar teoremi, darboğaz analizi, proje yönetimi, tersane

AN INNOVATIVE THEORY OF CONSTRAINTS BASED APPROACH FOR IMPROVEMENT OF SHIPYARD PROJECT MANAGEMENT

Abstract

There is a major manpower requirement for process production in shipyard
industry under hard working conditions with hazardous material. Shipbuilding
period comprises cutting and marking of the steel plates, steel fabrication,
assembly of the sections, erection on slipway, launching of the vessel, sea
trials and the delivery of the vessel to the Owner. Block fabrication is the
main production process in shipyards. It includes many kinds of inputs and
interconnected processes and each process has an effect on the next stages of a
ship’s life cycle. Thus, a good planning ought to be developed to make an
efficient producing process. Besides, due to the growing environmental
awareness, new and innovative methods must be implemented in ship
manufacturing. In this study, work-flow and data have been obtained from production
stations of a shipyard, which has duplicate production concept, and critical
chain, project and feeding buffers have been calculated. The obtained data has
been compared with the results of calculation and result has revealed that the new
findings have contributed to gaining a more fruitful production process.

Keywords

Theory of constraints, bottleneck analysis, project management, shipyard

References

• Aguilar-Escobar, V. G., Garrido-Vega, P. and González-Zamora, M. (2016). Applying the theory of constraints to the logistics service of medical records of a hospital. European Research on Management and Business Economics, 22, 139-146.
• Bilgili, L., and Çelebi, U.B. (2013). An innovative method establishment for a green shipyard concept. In: Proceedings Sustainable Intelligent Manufacturing. Lisbon-Portugal.
• Bilgili, L., Deli, D. and Çelebi, U.B. (2013). An innovative six sigma and lean manufacturing approach for environmental friendly shipyard. In: Proceedings Sustainable Intelligent Manufacturing. Lisbon-Portugal.
• Çelebi, U.B. and Turan, E., (2011). A supply chain management model for shipyards in Turkey. In: Proceedings IMAM 2011, International Maritime Association of the Mediterranean.
• Cho, K.K., Oh, J.S., Ryu, K.R. and Choi, H.R. (1998). An integrated process planning and scheduling system for block assembly in shipbuilding. Annals of the ClRP, 47(1), 419-422.
• Costas, J., Ponte, B., de la Fuente, D., Pino, R. and Puche, J. (2015). Applying Goldratt’s theory of constraints to reduce the bullwhip effect through agent-based modeling. Expert Systems with Applications, 42, 2049-2060.
• Eliyahu, M.E., (1984). The Goal. Great Barrigton: North River Press.
• Eliyahu, M.E., (1990). What is this thing called Theory of Constraints, and How Should it be implemented? WI: ASQC Quality Press, Milwaukee.
• Goldratt, E.M. and Cox, J. (1984). The Goal: An Ongoing Improvement Process, Gower, Aldershot.
• Golmohammadi, D. (2015). A study of scheduling under the theory of constraints. International Journal of Production Economics, 165, 38-50.
• Jacob, D. and McClelland W.T. (2001). The Theory of Constraints Project Management. The Goldratt Institute. Ü Kafalı, M., Ünsan, Y. and Özkök, M. (2018). Tersaneler için bir üretim planlama ve kontrol metodoloji önerisi. Journal of ETA Maritime Science, 6(1), 47-59.
• Kee, R., and Schmidt C. (2000). A comparative analysis of utilizing activity-based costing and the theory of constraints for making product-mix decisions. International Journal of Production Economics, 63, 1-17.
• Leach, P. (2000). Critical Chain Project. Artech House Inc., Norwood.
• Lee, S., Kim, B., Huha, M., Cho, S., Park, S. and Lee, D. (2013). Mining transportation logs for understanding the after-assembly block manufacturing process in the shipbuilding industry. Expert Systems with Applications, 40, 83-95.
• Ozkok, M. and Helvacioglu, I.H. (2013). A continuous process improvement application in shipbuilding. Brodogradnja, 64(1), 31-39.
• Park, K., Lee, K., Park, S. and Kim, S. (1996). Modeling and solving the spatial block scheduling problem in a shipbuilding company. Computers Industrial Engineering, 30(3), 357-364.
• Radovilsky, Z. (1998). A quantitative approach to estimate the size of the time buffer in the theory of constraints. International Journal of Production Economics, 55: 113-119.
• Rand, K.G. (2000). Critical Chain: The theory of constraints applied to project management. International Journal of Project Management, 18: 173-177.
• Strear, C., Vissers, R., Yoder, E., Barnett, H., Shanks, T. and Jones L. (2010). Applying the theory of constraints to emergency department workflow: Reducing ambulance diversion through basic business practice. Annals of Emergency Medicine, 56(3), 11.
• Steyn, H. (2000). An investigation into the fundamentals of critical chain project scheduling. International Journal of Project Management, 19, 363-369.
• Steyn, H. (2002). Project management applications of the theory of constraints beyond critical chain scheduling. International Journal of Project Management, 20, 75-80.
• Şimşit, Z.T., Günay, N. S. and Vayvay O. (2014). Theory of Constraints: A literature review. Procedia Social and Behavioral Sciences, 150, 930-936.
• Šukalová, V., and Ceniga, P. (2015). Application of the theory of constraints instrument in the enterprise distribution system. Procedia Economics and Finance, 23, 134-139.
• Turan, E. and Çelebi, U.B. (2011). Advanced manufacturing techniques in the shipyards. In: Proceedings IMAM 2011, International Maritime Association of the Mediterranean.
• Wahlers, J. L., and Cox III, J. F. (1994). Competitive factors and performance measurement: Applying the Theory of Constraints to meet customer needs. International Journal of Production Economics, 37 (2-3), 229-240.
• Zhao, W., Ji, D., Ming, Z. and Xiu, F. (2017). Survey on flexible shipbuilding technologies for curved ship-blocks. Procedia Engineering, 174, 800-807.