Startup spares

Startup spares shall be quoted to be shipped with the unit as follows ... 

Seiler shall quote both startup and eapital spares. 

For pumps, it is common to have steam driven primary units with electi-ical spares having inherent fast startup capability. Mixed utilities often allow continuation of operations, after a fashion, when one utility fails. 

Maintenance engineers on the team write similar manuals discussing the repair, cleaning, lubrication, and operation of all the equipment. They will also decide what spare parts and tools must be available for startup, and make certain these are ordered by the purchasing department. 

An identical screw was ordered with the correct flight clearance. As soon as the screw was delivered, the screw was installed in the extruder. Soon after startup, the extruder was discharging at a temperature near 220 °C at the base rate of 130 kg/h. Next the rate was slowly increased to 180 kg/h. The discharge temperature increased to about 224 °C. Higher rates are likely possible. The worn screw was sent back to the screw manufacturer for refurbishment. This screw was then stored as the spare screw. 

The very basic cost breakdown is by directs and indirects. The directs include all materials that physically go into the project and the cost of the labor required to install it. The indirects include engineering, field indirects, spare parts, taxes, startup, etc. 

A side-stream accumulator was lifted off its foundation by a pressure surge at startup. During hot oil recirculation, back flush of the spare pump was being attempted. The pump discharge valve was cracked open before the suction valve was closed. A pocket (rf water in the pump or its piping was sucked into the hot oil, causing the surge. 

The process units described in Section 9 should include (a) storage facilities for the feed, product, byproduct, and intermediate chemicals, (b) spare equipment items (pumps, adsorption towers, etc.) required to avoid shutdowns in the event of operating difficulties, and equipment for startup, which is often not needed during normal operation. 

Other Cost Components include (a) owners Project Management cost, which includes technical and economic feasibility studies, environmental impact studies, plant site selection, land procurement, financing negotiations, preparation of technical specifications, selection or recommendation of contractors, and contract negotiations,- (b) Preoperation and Startup Expense, which provides for the costs incurred between the end of construction and the production of a quality product at design capacity and (c) Spare Parte. 

The Total Fixed Investment is the total capital cost of the plant. It includes land, the battery-limits costs, storage, utilities and general service facilities, spare parts, preoperational and startup cost, project management and interest during construction. The Total Depreciable Fixed Investment excludes the cost of land, which is not a depreciable cosfitem. . ... 

The closed cooling water system design temperature depends on the maximum temperature of service water intake. The closed cooling water system satisfies the plant s full power load requirements. Extra cooling capability, with all spares operating, is adequate to handle plant startup duty. 

Valves are not required to function to maintain the operating components in-service (i.e, if the valves failed to operate, system reliability is similar to a single Brayton) Valves are required to function to startup a spare Brayton and to isolate a damaged Brayton... 

The plant arrangement assumed for the two Brayton system heat balance is illustrated in Figure 5-27. This system has two converter loops each with one turboaltemator, recuperator, and gas cooler. No cross-strapping of converter loop components is assumed. Each turboaltemator Is sized to produce the entire 200 kWe required for full power. The recuperator and gas cooler are appropriately sized to meet this power requirement. One converter loop is normally operating while the other is an idle spare A check valve is located at the outlet of each compressor to prevent backflow through the idle loop to maximize system efficiency, minimize bypass cooling flow around the reactor, and prevent potential damage to turbomachinery due to reverse rotation. An isolation valve installed the outlet of each compressor enables loop shutdown and startup evolutions and provides Brayton overspeed protection for certain electric plant casualties. 

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