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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>The Powerhouse</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<div align="center">
<p><font size="5">Powerhouse - Additional Photos Underneath the Boiler Room</font></p>
<hr>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="28%" valign="top"><p><font size="-1">You are currently viewing the Powerhouse tour pages.
</font></p>
<p><font size="-1">The following links allow you to navigate throughout
the Powerhouse or jump to other factory buildings:</font></p>
<p><font size="-1"><strong>Power Plant Tour Pages:</strong></font></p>
<ul>
<li><font size="-1"> 1: <a href="powerhouse.html">Under the Boiler Room</a></font>
<ul>
<li><font color="#FF0000" size="-1">Extra Images</font></li>
</ul>
</li>
<li><font size="-1">2: <a href="powerhouse2.html">Under the Boilers</a></font></li>
<li><font size="-1">3: <a href="powerhouse3.html">Electrical Switchgear
Room</a> </font>
<ul>
<li><font size="-1"><a href="powerhouse3-extraimg.html">Extra Images</a></font></li>
</ul>
</li>
<li><font size="-1">4: <a href="powerhouse4.html">Water Preparation
Area</a></font></li>
<li><font size="-1">5: <a href="powerhouse5.html">Turbine Room</a></font></li>
<li><font size="-1">6: <a href="powerhouse6.html">Boiler Room</a></font></li>
</ul>
<p><strong><font size="-1">Tours of Other Factory Buildings:</font></strong></p>
<ul>
<li><font size="-1"><a href="grounds.html">Jump to Factory Grounds Tour</a></font></li>
<li><font size="-1"><a href="milld-select.html">Jump to Mill D Tour</a></font></li>
<li><font size="-1"><a href="millc.html">Jump to Mill C Tour</a></font></li>
<li><font size="-1"><a href="/">Jump to Allied Paper Home</a></font></li>
</ul>
<hr>
<p align="center"><script type="text/javascript"><!--
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</script></p>
<p align="center"> </p>
<p align="center"> </p>
<p align="center"> </p></td>
<td width="77%" align="center" valign="top"><p><a href="/photo/pwr/1024/IMG_2858.jpg"><img src="photo/pwr/IMG_2858.jpg" width="400" height="300" border="2"></a></p>
<p>A view of the general clutter down there.</p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2861.jpg"><img src="photo/pwr/IMG_2861.jpg" width="400" height="300" border="2"></a></p>
<p>A valve on a pipe.</p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2864.jpg"><img src="photo/pwr/IMG_2864.jpg" width="400" height="300" border="2"></a></p>
<p>More stuff overhead, including a ventilation fan (which looks like
it may be part of a heater).</p>
<p> </p></td>
</tr>
</table>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2870.jpg"><img src="photo/pwr/IMG_2870.jpg" width="400" height="300" border="2"></a></p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2871.jpg"><img src="photo/pwr/IMG_2871.jpg" width="400" height="300" border="2"></a></p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2876.jpg"><img src="photo/pwr/IMG_2876.jpg" width="400" height="300" border="2"></a></p>
<p> </p>
<p> <a href="/photo/pwr/1024/IMG_2874.jpg"><img src="photo/pwr/IMG_2874.jpg" border="2"></a></p>
<p>Pipes, valves, and more pipes and equipment.</p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2877.jpg"><img src="photo/pwr/IMG_2877.jpg" width="400" height="300" border="2"></a></p>
<p> A visitor to the site, C. Demaine, tells us that this is a 3 phase electrical
disconnect switch. The glass window in the front is there so that you can
look in and see that the blades of the three switches are actually physically
disconnected before working on the disconnected machinery. </p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2868.jpg"><img src="photo/pwr/IMG_2868.jpg" width="400" height="300" border="2"></a></p>
<p>A data logging device that we think may be called an 'integrator'. They
mark a 24-hour (usually) record of a sensor reading on a circular piece of
paper. C. Demaine adds that the device could actually be a standalone chart
recorder OR a an analog controller with built-in chart recorder. If it is
an analog controller, then in addition to recording data from a sensor, the
device also would control some valve or setting based on the input of the
sensor.</p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2869.jpg"><img src="photo/pwr/IMG_2869.jpg" width="400" height="300" border="2"></a></p>
<p>Some switches or circuit breakers for a turbine, air compressor, and some
other equipment (perhaps the 'Collection Tank'). C. Demaine adds the following:
This is an Allen Bradley MCC (Motor Control Center). An MCC is essentially
a device to switch electric motors on and off. (Evidently with large motors
this is a bit more complicated than simply connecting or disconnecting the
power supply.) The two disconnects visible here are used to ensure that the
powered devices are disconnected from the power supply during maintenance
operations. A lock can be passed through the handles to ensure that nobody
turns them on and zaps the people working on the equipment. These two disconnects
are indeed in the disconnected position. Most newer plants keep most of this
electrical stuff in its own room where it doesn't get beat up as much.</p>
<p> </p>
<p><a href="/photo/pwr/1024/IMG_2878.jpg"><img src="photo/pwr/IMG_2878.jpg" width="400" height="300" border="2"></a></p>
<p>Another one of those boiler air intakes, and one more in the background.
They look pretty heavy-duty.</p>
<p> </p>
<p><a href="powerhouse.html">Back to main Under the Boiler Room Page</a></p>
<p><a href="powerhouse2.html">Continue on to the Area Under the Boilers</a></p>
<p> </p>
</div>
</body>
</html>