Startup problems

Equipment management program. Startup problems, solutions, and design ehanges should be elearly doeumented and available for a good equipment management plan. All items that ean reduee Life Cyele Costs (LCC) should be eonsidered. These inelude ... 

Godard, K. E., Gas Plant Startup Problems. Hydrocarbon Processing, September 1973, p. 151. 

On the other hand, Union Carbide was plagued by all sorts of problems in starting up its chemical complex at Taft, La. It was reported that startup problems reduced corporation after-tax earnings by 30,000,000 and set the time schedule for full production back 18-24 months.12... 

The team s laboratory specialist will make certain that all the equipment he needs is in operating order before startup. He will need to familiarize himself with not only the tests that will be regularly performed, but any others that may be useful in diagnosing startup problems. He may arrange for the use of a number of special... 

Test your switcher s phase margins with something very close to the final load as early as possible. As mentioned previously, even simple startup problems of switchers do not usually show up with resistive loads. For these, you really need to test using an electronic load, placed at least in constant current (CC) mode. 

Amount of off-spec product or loss of raw material as a result of startup problems X... 

Enable Boot Logging Logs all boot information to a file called ntbtl og. txt. This file can be found in the WINNT directory. You can then check the log for assistance in diagnosing system startup problems. 

Dryout of the insulation in the reformer furnace of Methanol 1 commenced in late August 1985 and methanol was synthesised on October 12. On October 17th the first gasoline was produced from the MTG plant. Only minor startup problems were encountered - a few valves operating unsatisfactorily, the odd steam leak and initial control system and heat balancing problems. 

Original plans called for the JP products to be acid treated on rundown to tankage or railcar. This plan was modified after acid treating startup problems resulted in poor denitrification. The JP-5 was rundown to tankage without acid treating, as was the DFM, and both were treated after the hydrotreating run was complete. Fortunately, the acid treating problems were resolved in time to treat the JP-8 on rundown to a railcar. 

The possibility of sulfur dioxide contamination of the DIPA has been considered so remote and the rate of DIPA degradation is so low that none of the plants now being designed and constructed have DIPA reclaiming facilities, as is common practice in MEA and DEA amine units. Since November 1973, none of the startup problems have recurred in the Champlin Unit, and the plant has operated well below the sulfur emission levels guaranteed by Shell and required by APCD regulations. 

Figure 13.7 Examples of heat-integrated columns that can experience startup problems, (o) A typical cryogenic gas plant demethanizer that can experience cold spins (b) a heat-integrated column that can experience surging.

The amount of off-spec product or loss of raw material due to startup problems - A high number might indicate that PSSR activities were not performed well or that MOC activities did not address quality hazards... 

Solution. The usual design/procurement/construction/startup problems can be compounded by any one or combination of the following. 

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