Design Basis. The proposed alcohol plant to be located in Erskine, Minnesota. The nominal design capacity will be 50 MMGPY anhydrous alcohol on the basis of 350 operating days/year.
1.1 Raw Material and Yield Feedstock to the LICENSOR battery limits will be: Cleaned U.S. No. 2 yellow corn (or Milo) with a moisture content of not more than 16% wt. For design purposes, an average starch content of not less than 60% wt on as-is basis is assumed. Corn (Milo) shall be milled to the fineness specified by LICENSOR. AND up to, but not to exceed 20% OF TOTAL STARCH in Substrate charge can be supplied from: Cleaned U.S. No. 2 Hulless Barley with a moisture content of not more than 14% wt. For design purposes, an average starch content of not less than 57.5% wt on as-is basis is assumed. Barley shall be milled to the fineness specified by LICENSOR. The total carbohydrate feed to the alcohol plant shall be based on a yield of 1.96 pounds of starch per pound of anhydrous alcohol produced.
Design Basis. Electrical conductors will be selected with an insulation level applicable to the system voltage for which they are used and ampacities suitable for the load being served. -------------------------------------------------------------------------------- Proprietary Information Page 13 AES IRONWOOD CONTRACT FINAL ISSUE - OCTOBER 30, 19988 -------------------------------------------------------------------------------- 2x1 501G REFERENCE PLANT APPLICATION HANDBOOK -------------------------------------------------------------------------------- ELECTRICAL ENGINEERING DESIGN CRITERIA -------------------------------------------------------------------------------- Cable Ampacities The maximum ampacities for any cable will depend upon the worst case in which the cable will be routed (tray, conduit, duct, or direct buried). In addition to ampacity, special requirements, such as voltage drop, fault current availability, and environment, will be taken into consideration in sizing of cable. The allowable ampacity of power cables will be in accordance with NEC requirements.
Design Basis. All steam piping shall be designed for the maximum pressure and temperature design requirements, including transient and upset conditions. The steam piping shall be sized for the pressure drop requirements in order to satisfy plant thermodynamic performance criteria. The hot and cold reheat steam piping systems include provisions for venting of noncondensables and warm-up during startup. In addition, an adequately designed drain system shall be provided to remove condensate during startup and low load operation.
Design Basis. The steam jet air ejectors shall be sized based on system requirements, but shall always meet or exceed the recommendations of the Heat Exchanger Institute standards for steam surface condensers. Modes of Operation The condenser air removal system shall have two operating modes: "hogging" and "holding". Hogging operation shall utilize the hogging ejector for plant startup where large quantities of air and noncondensable gases are removed from the condenser before the startup of the steam turbine. Holding involves normal operation where noncondensable gases are continuously removed from the system at low condenser pressure. -------------------------------------------------------------------------------- Proprietary Information Page 13 AES IRONWOOD CONTRACT FINAL ISSUE - OCTOBER 30, 1998 --------------------------------------------------------------------------------
Design Basis. The Condensate System is designed to provide the maximum condensate demand during full load operation with both combustion turbines operating. The design capacity of each condensate pump will be based on supplying 50% of the maximum condensate flow to be encountered in operation, including turbine bypass. The pump shut-off head shall be a minimum of 115% of the total head at design flow and rated speed. The total head of the pump will be equal to the total discharge head minus the total suction head, plus 5% margin. The pumps shall be selected with 5% flow margin. Net positive suction head available (NPSHA) is zero at the pump suction flange. Each pump shall be designed such that the best efficiency point lies in the flow range between normal and maximum flow conditions. -------------------------------------------------------------------------------- Proprietary Information Page 20 AES IRONWOOD CONTRACT FINAL ISSUE - OCTOBER 30, 1998 -------------------------------------------------------------------------------- Modes of Operation During normal operation condensate feeds the HRSG, the steam jet air ejector condenser and gland steam condenser. Two 50% pumps will be running. During steam turbine bypass, the condensate system also feeds the reheat and LP bypass desuperheaters. In the event one of the condensate pumps shut down, the standby pump is automatically started to maintain the required flow. TYPICAL CONDENSATE PUMP DESIGN FEATURES Motor Driver Cast Iron Bowls A743 First Stage Impeller Bronze Impellers (Add'l Stages) Keyed Impellers 416 SS Pump Shaft Bronze Bearings 10LF-20 Fab Steel Discharge Head Xxxx Xxxxx IB BF50 171 Mechanical Seal Plan 13 Seal Flush Piping - Copper Tubing 3 WSA Adjustable Spacer Coupling 300# RF Discharge Flange 150# RF Suction Flange Steel Suction Can Suction Can Vent Steel Mechanical Seal Housing 416 SS Headshaft Keyed Lineshaft Couplings -------------------------------------------------------------------------------- Proprietary Information Page 21 AES IRONWOOD CONTRACT FINAL ISSUE - OCTOBER 30, 1998 --------------------------------------------------------------------------------
Design Basis. The Compressed Air System shall be sized to provide enough capacity for the plant service air requirements as well as the instrument air requirements.
Design Basis. The Compressed Gas System shall be sized to supply compressed gas to all gas users.
Design Basis. The fuel gas supply pressure required for the combustion turbines with dry low NOx combustors shall be at least 515 psig at the gas turbine connection. The system shall be sized to handle the maximum gas demand. Modes of Operation During normal operation, the system provides fuel gas to the CT boundary. During oil operation, the system is out of operation. If required, the combustion turbines can be switched over from gas fuel to liquid fuel on-line without shutting down the plant. -------------------------------------------------------------------------------- Proprietary Information Page 37 AES IRONWOOD CONTRACT FINAL ISSUE - OCTOBER 30, 1998 --------------------------------------------------------------------------------
Design Basis. The Perry Nuclear Power Plant has a common spent fuel handling and storage facility located between the reactor buildings. This facility has storage capacity for approximately 4020 spent fuel assemblies. This constitutes spent fuel storage capacity for over 15 years of operation. In addition the facility has additional storage capacity for other high level solid wastes including discarded reactor internals, control rods and fuel channels. The extended storage capacity of the Perry spent fuel facility is needed in accordance with current practice to treat and dispose of spent nuclear fuel and fuel assemblies as solid waste. Spent fuel is unusable and has no value. The Company does not expect to sell or to be able to sell spent nuclear fuel or fuel assemblies at any price. The Perry spent fuel facility is located in the fuel handling building and the intermediate building. It includes two connected spent fuel storage pools with a related cooling system, fuel handling and transfer equipment, and spent fuel cask handling equipment. Spent fuel may be transferred between the fuel storage pools. The spent fuel handling facility also includes dedicated space in the intermediate building. The qualifying portion of such building is calculated by dividing the space used for the spent fuel handling facility equipment by the total equipment space in the building excluding common areas such as hallways. This space is functionally related and subordinate to the spent fuel handling facility, it is an integral part of the spent fuel handling facility, and the character, size and cost of such building space are dictated by the spent fuel handling facility through federal government construction criteria. Also located in the fuel handling building are production-related fuel handling equipment including 2 sets of new fuel racks, 2 fuel transfer tubes, 1 fuel transfer canal, a truck bay for new fuel delivery and non fuel related equipment. These items and the space they occupy in the fuel handling building are excluded from the scope of the qualifying portion of exempt facilities because they are not dedicated to spent fuel storage. In the absence of current spent fuel storage requirements, the spent fuel storage facility would not be necessary. The reactor building and fuel handling equipment is adequate to provide production related fuel handling functions which include new fuel loading and 1 core offload for maintenance. None of this production-related equipment is include...
Design Basis. Discuss the process and methods used to design all major components of the interim measure. Discuss the significant assumptions made and possible sources of error. Provide justification for the assumptions. *Conceptual Process/Schematic Diagrams. *Site plan showing preliminary plant layout and/or treatment area. *Tables listing number and type of major components with approximate dimensions. *Tables giving preliminary mass balances. *Site safety and security provisions (e.g., fences, fire control, etc.).
