04543nas a2200469 a 4500 20260817172332.0 130711s2011 th r 000 eng d .b12119623 AIT Thesis no.OTM-11-01 Somsakul Sukalanun Causes and effects of change orders: a case study of detailed engineering design projects of EPC revamped offshore platforms in the gulf of Thailand Pathum Thani, Thailand : Asian Institute of Technology, 2011 1 online resource (84 leaves) : ill. (some col.) Thesis ; no. OTM-11-01 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Offshore Technology and Management, School of Engineering and Technology Thesis (M. Eng) - Asian Institute of Technology, 2011 Numbers of EPC (detailed engineering, procurement and construction) revamped offshore platform project, for the purpose of enhancing producing capability and accommodating increasing production, have recently emerged due to sharp increasing demand of energy consumption in Thailand. Changes in scope of work, once they occur during detailed engineering design phase, can lead to a number of change orders which likely results in schedule and budget variations of procurement and construction phase. Thus, by thoroughly studying change orders issued during detailed engineering design phase of historical revamped EPC offshore platform projects, proposed preventive suggestions for minimizing and managing changes during engineering phase for the future projects can be drawn. Records of 58 change orders, from 5 historical projects, were collected from a design firm. A typical detailed engineering design workflow was created by reviewing company design procedure together with interviewing company staffs about practical design sequences. Thirty-two design steps from the typical design workflow were defined as potential causing events of change orders. Ten valid causing events (causes) were investigated by cross-analyzing between history in records of change orders and thirty-two causing events in the typical design workflow. 2Clarification of the Contract Requirement3 was the most frequent cause of change orders while 2Technical Bid Evaluation (TBE)3, first and third 3D model review session ranked the least. Effects of change orders were investigated by summarizing total schedule impact and cost impact for each project. Ten preventive suggestions were eventually drawn from history of change orders and ten valid causing events. Construction industry Management Chiu, Gregory L.F., Chairperson Chotchai Charoenngam, Examination Committee Poovadol Sirirangsi, Examination Committee RTG (Royal Thai Government) Fellowship, Scholarship Donor Asian Institute of Technology. Thesis ; no. OTM-11-01 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B03613 .b12119623 mnait z 250417 0 130711 m a z 0 000:001:PDF:b1211962:000982:0:0:0:0:0:0 Abstract n mnait mnait mnarc mnarc mnarc 20 40 Barcode : 30050120685895 CREATED : 2013-11-07 RECORD # : i12736661 LPATRON : 1025978 LCHKIN : 2015-08-18 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 3 TOT RENEW : 4 Barcode : 30050120685903 CREATED : 2013-11-07 RECORD # : i12736673 LPATRON : 1025736 LCHKIN : 2015-06-16 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160006143 CREATED : 2016-03-23 RECORD # : i12906372 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211014252 CREATED : 2021-12-16 RECORD # : i1335680x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050211014286 CREATED : 2021-12-16 RECORD # : i13356811 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 15713 15713 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.OTM-11-01 30050120685895 2026-08-17 17:23:32 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.OTM-11-01 30050120685903 2026-08-17 17:23:32 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.OTM-11-01 30050160006143 2026-08-17 17:23:32 1 2026-08-17 40 0 0 0 0 MAIN MAIN mnarc 2026-08-17 50.00 0 AIT Thesis no.OTM-11-01 30050211014252 2026-08-17 17:23:32 3 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 50.00 0 AIT Thesis no.OTM-11-01 30050211014286 2026-08-17 17:23:32 4 2026-08-17 20