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所在平台: Udemy |
课程主页: https://www.udemy.com/course/capital-cost-estimation-for-brownfield-chemical-projects/
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课程名称：棕地化工项目的资本成本估算 课程概述：在许多情况下，承包工程公司（EPC）在提交棕地化工项目的详细工程投标时，会被要求提交该项目的初步资本成本估算（CapEx），以便获得管理层的预算批准。正如我在课程《工程成本估算—棕地化工项目》中所述，准备CapEx需要客户提供某些细节和输入，以及EPC公司在现场调查中收集的数据，以评估项目的范围。初步图纸，如P&ID（管道和仪器流程图）、现场布局以及工作范围的详细信息，对于执行成本估算至关重要。本讲座旨在定义一种实际的CapEx估算方法，预期成本的变动幅度为+/-20%，这是因为在成本估算时可用的细节有限，并且需要遵守客户指定的短时间线。通常，此活动将基于现场调查报告和可用图纸/数据，耗时约4到6周进行估算。这里假设公用设施的供应，如电力、工艺水、冷却水、去离子水、压缩空气、仪表空气、氮气、原材料及主要产品储罐、真空系统、实验室等，均由客户现有设施负责，成本估算中只需涵盖管道、电气和仪器的接入。这一项目仅是通过安装上述设备扩建现有生产设施，并对土建和结构工程的投资进行最小化。现有的管道和电缆架将被延伸，以覆盖此次新建的设施。该设施可能需要一座新建筑，以容纳上述设备，同时新增MCC（电动机控制中心）以及在现有DCS（分布式控制系统）中添加I/O卡。第一步是创建一个Excel模板，以记录所有学科下的各项支出，并根据上述初步图纸/文件和现场调查报告填充详细信息。
On many occasions, an EPC company entrusted with the task of submitting a bid for detailed engineering for a brownfield chemical project, would be asked to submit a preliminary capital cost estimate (CapEx) for the proposed project in order to obtain budgetary sanction from the management for implementation.As already stated in my course Engineering cost estimation-Brownfield chemical projects , preparation of CapEx requires certain details and inputs from the customer as also data collected by the EPC company during site survey to assess the scope of the project. Further preliminary drawings like P & ID, Site Layout along with details of scope work are essential for performing this cost estimation.This lecture attempts to define a practical methodology for CapEx estimation with a +/-20% variation in cost for a brownfield project in view of the limited details available for cost estimation and the need to comply with a short timeline specified by customer. Generally this activity will take about 4 to 6 weeks to make the estimate based on site survey report and drawings /data made available.Here, we have assumed that supply of utilities like power, Process water, Cooling water, DM Water, Compressed Air, Instrument Air, Nitrogen, RM and main product storage tanks, vacuum System, Laboratory are under customer scope from existing facilities and only tie-ins for piping , electrical and instrumentation are to be covered in the cost estimation. This project is only an expansion of facility for manufacture by installation of above equipment with minimal investment for civil and structural works. The existing pipe and cable racks shall be extended to cover this new facility. This facility may need a new building to house the above equipment along with new MCC and addition of I/O cards in existing DCS.The first step is creating an individual Excel template to capture the various expenditure to be incurred under all disciplines and populate the details based on above preliminary drawings/documents and site survey reports.
