4"12-Z 1 - part - usaid

The Infrared thermometer was used up until SIX months ago to find problems, but batterres
died and they cannot find 2 Hrvlna ($1 10) to buy four new ones The electrrclan used It
to check a large "fuse" on a transmiSSion tower which was overheating from a short CircUit
and could have been a serrous safety InCident They used It to check insulation and covers
on bOIler burners They also used It to find and repair insulation on steam lines from
bOIlers They did not seem to be aware of other uses for checking temperatures of motors,
bearrngs, contacts, etc The electrrclans apparently refused to use It
They recently received the Panametncs two-channel ultraSOnic flow meter and training on
how to use It. The technical specialist has studied the manual and plans to use It for
measunng mazut
The Fluke power analyzer IS being used for measurements only In secondary CirCUits up
to 100V, 02,03,05 amp A more sUitable application would be In pnmary Circuits It has
been useful for preparrng current phase diagrams and use In HV sWltchyard CirCUits for
checking measurements from current and voltage transformers
They know that harmOniCs from large motors are a serrous problem and the Fluke would
be a valuable Instrument for analyzmg, but it is not the responsibility of their department
The Instromet gas chromatograph has not yet been Installed because of finanCial
problems, and trying to deCide where It should be located They said there IS no space In
• the natural gas meterrng substatIon control house, and have deCIded to remodel a secure
room near Unit 2 They have a contract With another organization to Install about 50m of
sample line from the main gas dlstnbutlon line to bOiler room They Will raise walls to
ceiling to enclose room and prOVide Insulation They were asked where they Will vent
sample and calibration gases to atmosphere and where KCal output Signal would be
• mtegrated With meter station flow, pressure and temperature logging on computer They
do not yet know The Instrument and accessones are stili packed In boxes and It IS
questionable If eqUipment Will be Installed and commissioned by the end of August
The two Zirtek oxygen probes are Installed on Unit 3 bOiler angled downward above a
• burner on each Side ThiS IS not a good location because of the pOSSibility of flame
Impingement and high temperature and slag damage Zirtek engineer recommended
location higher up In radiant section In fire box Recommended temperature range for
ZirCOnium OXide cell long term performance IS 600 to about 1200°C
• The reason probes were Installed on Unit 3 IS the fuel split IS about 90% coal, 5% gas and
5% mazut and burner deSign results In unstable flame and IneffiCient combustion Dunng
the commissIoning test, oxygen was measured at 11-12% and 870-900 o e The bOiler IS
presently shut down for repairs
•
•
Some of the experts wanted to Install probes the same way at all 16 burners Our
ImpreSSion IS that they do not want to relocate the probes higher In the furnace
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