4"12-Z 1 - part - usaid
4"12-Z 1 - part - usaid
4"12-Z 1 - part - usaid
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cooling water flow to condensers. Next they plan to measure bOiler feedwater and distnct<br />
heating water flow rates They recognize many opportunities for uSing this Instrument to<br />
save energy The most Important use IS for balancing the dlstrtct heating demand load<br />
A practical example we observed was to measure the flow rates of 25 cu m/sec through<br />
a filter with new medIa installed The chemists saId flow rate would decrease due to<br />
Increased pressure drop, but there was no way to check It. In a matter of a few minutes,<br />
the speCialist confirmed the flow rate with the ultraSOnic flow meter<br />
Another example IS where they plan to check mazut flow to quantify measurement<br />
differences and losses ThiS morning they could not account for 80 tonnes of mazut<br />
burned in three bOIlers, how much per bOIler and why Was It easier to burn the mazut<br />
than poor coal In one of the bOilers, or was the coal unusually bad that night?<br />
They requested technical literature on doppler ultraSOnic flow meters for use In open<br />
channel flow measurements In cooling water flumes<br />
They Installed oxygen analyzer probes on the base loaded Unit 1 dual bOilers, two probes<br />
per bOiler With SIgnals to two dual channel analyzers Installed In the control room behind<br />
the main panel Jerry Harger from Zirtek commissioned the Instruments In June and<br />
trained the personnel<br />
During startup, one electrOnic board failed and Zirtek replaced It Out of 8 probes (4<br />
spare), four were damaged, the ceramic broken One analog output for the plotter failed<br />
after Jerry Harger left The analog outputs are connected to their strtp recorders They<br />
plan to move the analyzers (display) to the front panel as operators become confident In<br />
readings. The oxygen readings were averaging about 4%, temperature about 700°C Air<br />
heater temperature as about 500°C +<br />
Reference air for the probes IS temporartly supplied from compressed air cylinders, good<br />
for one week The only compressed air avaIlable IS plant air which IS wet and dirty With 011<br />
They plan to Install a coalescer and filters<br />
POSitIve advantage of the ZirCOnium OXide probes IS that they are "ten times less<br />
maintenance" and very stable Two maintenance technicians work full time on the Soviet<br />
made paramagnetic oxygen analyzers to repaIr and adjust them Every morning they have<br />
to blow down, clean and adjust them on all the bOilers, and whenever operators call them<br />
to check on erratic readings<br />
The Instromet Encal Gas Chromatograph was received In May and they had not yet<br />
Installed It We looked at the Instrument In the shop and answered questions about<br />
connections They have been studying the RUSSian language manuals<br />
We went to the natural gas metenng substation to look at where they planned to Install the<br />
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