Contents of Materials Performance - APR 2012

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

Page 14 of 76

MP BLOG Continued from page 11
with feedwater into the 600-psi (4,137- kPa) boilers. The caustic upset the boilers IVL ÆI[PML W^MZ _Q\P \PM [\MIU \W [XZMIL \PZW]OPW]\ \PM [\MIU [a[\MU QVKT]LQVO [\MIU \]ZJQVM[ IVL \PM S8I IVL
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one teardown of a turbine that contained I [QOVQÅKIV\ Y]IV\Q\a WN _PQ\M LMXW[Q\[ QV its internals.
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M`IUXTM[ WN KI][\QK KZIKSQVO QV \PM [\MIU XQXQVO _MTL[ \PI\ WKK]ZZML ]X \W [M^MZIT weeks after the caustic incident, and the M`IUQVI\QWV WN \PM [\MIU \]ZJQVM _I[ I [MKWVLIZa Q[[]M )T\PW]OP \PW[M QV^M[\QOI\QVO \PM ZWW\
cause of the incident concluded that the KI][\QK KWV\IUQVI\QWV _I[ I WVM \QUM
M^MV\ KI][ML Ja IV WXMZI\QWV[ MZZWZ \PM KWV[MY]MVKM[ WN \PM KI][\QK KWV\IUQVI- tion were present throughout the plant's [\MIU [a[\MU NWZ [M^MZIT UWV\P[ 1 [][XMK\ that the excess caustic was present as solid LMXW[Q\[ QV \PM XQXQVO _PMV \PM [\MIU _I[ ZMTI\Q^MTa LZa J]\ KW]TL LQ[[WT^M IVL JMKWUM UWZM UWJQTM L]ZQVO XMZQWL[ \PI\ \PM [\MIU _I[ ZMTI\Q^MTa _M\ X]ZOML NZWU \PM [\MIU [a[\MU Ja QV- creased blowdown of condensate to waste.
Perhaps the white-colored deposits
aW] LM[KZQJM KW]TL JM ZMTI\ML \W M`KM[[ KI][\QK QV \PM [\MIU [a[\MU )VITa[Q[ WN [IUXTM[ NZWU [\MIU \ZIX[ UQOP\ ZM^MIT unusual conditions that could account NWZ \PM LMXW[Q\[ aW] WJ[MZ^ML
Q[ [WLQ]U PaLZW`QLM 6I70 \PMZM _W]TL VW\ JM XQ\\QVO WZ IVa SQVL WN KWZ- ZW[QWV M`KMX\ NWZ \PM XW[[QJQTQ\a WN [\ZM[[ KWZZW[QWV KZIKSQVO XIZ\QK]TIZTa WN \PM LQ[K[ I\ \PM JTILM I\\IKPUMV\ The reason for the deposit distribu-
A A 12 MATERIALS PERFORMANCE April 2012
tion, up to the extraction, could be be- KI][M \PI\ Q[ \PM ZMOQWV _PMZM \PM [\MIU is superheated. After the extraction, it UIa JM [I\]ZI\ML IVL _M\ IVL \PM JTILM []ZNIKM[ IZM _I[PML ZMTI\Q^MTa KTMIV ?M [\ZWVOTa ZMKWUUMVL IVITabQVO \PM LMXW[- Q\[ M^MZa \QUM \PM \]ZJQVM Q[ WXMV
AW]Z \]ZJQVM LMXW[Q\[ KIV JM IVa WN UIVa [IT\[ IVL PaLZW`QLM[ NZWU aW]Z JWQTMZ WZ NZWU []XMZ- PMI\MZ I\\MUXMZI\QWV [XZIa[ 1N Q\
Removal of barium sulfate from a pipeline
Q
How can I remove barium sulfate (BaSO4
) from a pipeline?
NACE International, Vol. 51, No. 4