HomeMy WebLinkAboutGolovin Waste Heat Status Reports, Trip Reports & Field Notes 1988FIELD TRIP REPORT
Date: 12/12-13/88
Site: Golovin
i) "
Crew: Peter N. Hansen VS
Purpose of visit: Inspection of existing system.
I left Anchorage at 8.30 a.m. and arrived in Golovin at 11.30 a.m.
Mr. Chuck Lewis showed me around and we inspected the waste heat system which we constructed during February of 1988. The system was functioning well except for a slight problem relating to
insufficient expansion volume in the primary loop.
Mr. Lewis showed me details of the existing distribution system and told me, that the utility would like to upgrade their low voltage (480V) system to a standard REA type system with a voltage
of 4,160 or 12,470 volts due to perceived line losses.
The system had been and continued to be quite reliable, and the losses were at the present time the only reason for wanting to
upgrade the system. It was apparent that simply stringing new
conductors on existing poles would not be an option due to several
clearence problems; the system would have to be completely rebuilt.
A totalizing meter had just been installed in the power plant, and based on a 20 day metering period, it was estimated that the losses were around 30%, which gave the utility a fuel efficiency
which would be too low to meet the proposed criteria for PCE disbursement.
In order to get a better understanding of the situation, I asked
several questions pertaining to unmetered loads, and it appeared
that the street lights as well as the power plant station service loads were unmetered. In addition hereto, the city shop, into
which the power plant is integrated, is unmetered and these loads
all serve to reduce the apparent losses. Even with these
reductions, losses still appeared to be excessive, and Chuck Lewis then mentioned that he suspected the school meter to be inaccurate. The school district had supplied the utility with a
multiplier of 10; however, an examination of the current transformers revealed that a multiplier of 80 would be correct. An audit of the high school’s consumption over the last year
revealed a monthly consumption of typically 1,000 kwh, which is obviously in error. Typically, high schools of the type and size would use at least 5-6000 kwh per month.
According to Mr. Lewis, this multiplier has been used since the
school was connected to the utility several years ago.
I promised Mr. Lewis to contact the Alaska Public Utilities commission and APA's own in house staff in order to gather more information about the utility’s possible course of action based on similar cases elsewhere.
I arrived back in Anchorage at 1.00 p.m. on 12/13/88.
FIELD TRIP REPORT
Date: 12/12-13/88
Site: Golovin
Vl), "
Crew: Peter N. Hansen / J
Purpose of visit: Inspection of existing system.
I left Anchorage at 8.30 a.m. and arrived in Golovin at 11.30 a.m.
Mr. Chuck Lewis showed me around and we inspected the waste heat
system which we constructed during February of 1988. The system
was functioning well except for a slight problem relating to
insufficient expansion volume in the primary loop.
Mr. Lewis showed me details of the existing distribution system
and told me, that the utility would like to upgrade their low
voltage (480V) system to a standard REA type system with a voltage
of 4,160 or 12,470 volts due to perceived line losses.
The system had been and continued to be quite reliable, and the
losses were at the present time the only reason for wanting to
upgrade the system. It was apparent that simply stringing new
conductors on existing poles would not be an option due to several
clearence problems; the system would have to be completely
rebuilt.
A totalizing meter had just been installed in the power plant, and
based on a 20 day metering period, it was estimated that the
losses were around 30%, which gave the utility a fuel efficiency
which would be too low to meet the proposed criteria for PCE
disbursement.
In order to get a better understanding of the situation, I asked
several questions pertaining to unmetered loads, and it appeared
that the street lights as well as the power plant station service
loads were unmetered. In addition hereto, the city shop, into
which the power plant is integrated, is unmetered and these loads
all serve to reduce the apparent losses. Even with these
reductions, losses still appeared to be excessive, and Chuck Lewis
then mentioned that he suspected the school meter to be
inaccurate. The school district had supplied the utility with a
multiplier of 10; however, an examination of the current
transformers revealed that a multiplier of 80 would be correct.
An audit of the high school’s consumption over the last year
revealed a monthly consumption of typically 1,000 kwh, which is
obviously in error. Typically, high schools of the type and size
would use at least 5-6000 kwh per month.
According to Mr. Lewis, this multiplier has been used since the
school was connected to the utility several years ago.
I promised Mr. Lewis to contact the Alaska Public Utilities
commission and APA's own in house staff in order to gather more
information about the utility’s possible course of action based on
similar cases elsewhere.
I arrived back in Anchorage at 1.00 p.m. on 12/13/88.
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