Utility & Plant Layout - Design & Standards.pptx

How to build utility plant & plant layouting

1. Utility & Plant Layout Fritz Adhinata Staf Process Engineer

2. Utility Plant Designed to support main plant (Ammonia & Urea Plant) Provided its own utilities systems to produce & distribute sea water, sweet cooling water, desalinated water, demineralized water, nitrogen gas, plant air/instrument air, to generate & distribute steam & electric power including emergency power

3. Utility Balances Steam & Condensate Balance Supply/demand steam tabulation showing all levels of steam & condensate and their interactions Steam balance influences many design parameters, such as boiler size and contingency, treated water make up rates, blow-down disposal rates, chemical usage & surface condenser size Electrical Balance Electrical demand from all equipment, offsites & office (building) Onsite generation versus purchased power needs to study Even with total onsite generation, there is often a community power backup Geographical location of electrical loads will influence location of subs and control centers and, thus, costs. Other Balance Balance of summaries for the other utilities, such as cooling water & fuel gas, plant air, instrument air, nitrogen, etc are also needed to design the Utilities Plant

4. Offsite Specifications Offsite facility is subdivided into Utilities & Other Offsites (building, storage, port, etc) Utilities portion interacts with the process area, while the other offsites have minor interaction with the process area The main concept is “Others have only one process unit to worry about but in utilities, everybody’s problem is my problem” In the study phase of a project, it is well to attach great importance to utilities, making sure that this portion of the capital estimate is large enough to provide reliability & sufficient spare capacity Utilities Other Offsites Process Steam Generator (Package Boiler) Flare System Electrical Power (Gas Turbine Generator, Steam Turbine Generator) Firewater System Instrument & Plant Air Systems Storage & Port Cooling Water System Buildings Fuel System Waste Disposal (Waste Water Treatment)

5. Rule of Thumb In the Plant Design, rule of thumb can be used to determine utilities consumption, area/space, weight, etc Rule of thumb can be considered as a general principle or means of estimation derived from practice & experience, rather than precise theory There are several references that give rule of thumb to inform the early stage of Plant Design, such as briefing, feasibility studies and concept design Rule of Thumb for Chemical Engineers (Carl Branan ) Rules of Thumb Guidelines for Building Services (Glen Hawkins) Example: Induced Draught Cooling Towers – Area & Height Requirements

6. Plant Layout Plant layout involves relative allocation of adequate spaces at the appropriate place for equipment, workers, materials other supporting activities and customers in service industries The objective behind the arrangement of work areas is to produce most economically, to design service effectively & to provide safe and good physical environment for workers and customers Six Basic Principle of Plant Layout: Integration Principle : best layout is one which integrates men, materials and machines in the best possible manner Flow Principle : best layout is one which provides for smooth and uninterrupted flow of men and materials Space Utilization Principle : best layout is one which make best use of available cubic space Minimum Movement Principle : best layout is one which results in minimum movement of men and material in the plant Safety & Comfort Principle : best layout is safe and comfortable for employees working in plant Flexibility Principle : best layout provides flexibility

7. Detailed Plant Layout

8. Thank You