Failure Analysis of Boiler Damages.pdf - Sme-gtz.org.vn
Failure Analysis of Boiler Damages.pdf - Sme-gtz.org.vn
Failure Analysis of Boiler Damages.pdf - Sme-gtz.org.vn
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
TÜV Industrie Service GmbH<br />
TÜV SÜD Group<br />
Westendstrasse 199<br />
80686 München<br />
Germany<br />
Page 4<br />
Steam-<br />
side excessive iron oxidation → Material loss → Hydrogen damage Photos 19 & 21<br />
• Heated down-comer tubes may cause circulation problems like stagnant flow →<br />
Insufficient<br />
water supply for riser tubes → Lack in cooling <strong>of</strong> evaporator tubes → Material overheating<br />
• Heavily fluctuating water level in the boiler drum may lead to<br />
Fluctuating steam space load and problems with the steam purity<br />
• Refractory material reduces heat input to evaporator tubes but may<br />
also affect the steam production and water circulation (mass flow)<br />
• Defects at drum internals e. g leaks at baffle sheets, incorrect installed demisters<br />
or cyclones may affect the steam purity<br />
Annexes: Photos 1 – 23<br />
Figures 1 – 4<br />
Photographs<br />
Photo 1<br />
TÜV SÜD Industry Services IS-ATW1-MUC, <strong>Boiler</strong> <strong>Failure</strong> 2005/11 - Page 4
Change language