IEEE Power & Energy Magazine - November/December 2017 - 98

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A CHALLENGE -
WE HAVE A SOLUTION
For over 100 years Slacan Industries has been Canada's largest
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slacan.com

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accordingly, they were tied both electrically and steamwise via cross-connections above and below 39th Street,
which separated them.
Originally, Waterside I was equipped
with a total of 56 650-hp boilers built by
the Babcock & Wilcox Company, and
these could be pushed to 1,625 hp each
with the use of a forced draft for the furnaces. Steam was supplied at 175 lbf/in2.
The coal-burning furnaces originally
were stoked manually. Articles appearing in Electrical World in 1909 indicated
that an operating procedure was in place,
particularly in the summertime, whereby
the stokers would be rotated periodically
from boiler to boiler so that each operator
would have an equal opportunity to work
close to the open windows. Tests were
conducted to determine an optimum design for the stoking shovels used to maximize their coal-throwing capability to
reach the rear of the furnaces.
The proper firing of the furnaces was
a significant factor in the station's operating efficiency. In a 1926 issue of Power,
a short article on Waterside mentioned
that a "smoke-watcher" was stationed in
a penthouse on top of a New York Edison office building north of the generating stations whose job (during daylight
hours) was to look out for thick black
smoke coming from any of the stacks.
That meant something was not right with
the operation of one of the furnaces, and
a boiler room foreman would be notified
to correct the problem.
In the summer, 30 furnaces were kept
banked and available for immediate use
by turning on the forced draft blowers.
This was necessary due to the sudden
increase in electrical load caused by
the switching on of thousands of lights
throughout Manhattan in the event of
a heavy thunderstorm. In one instance,
the load had increased from 45,000 to
85,000 kW in only 10 min!
The original plan for Waterside I
had been the installation of 16 gigantic
steam engines, with each coupled to a
25-Hz ac generator. This early standard low frequency was essential for
the satisfactory operation of the rotary
converters in the substations. However, only 11 of these behemoths were

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Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - November/December 2017