Mr. Paul Drindak Plant Manager ERCO Worldwide 1535 City

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Mr. Paul Drindak Plant Manager ERCO Worldwide 1535 City Powered By Docstoc
					August 4, 2005

Mr. Paul Drindak
Plant Manager
ERCO Worldwide
1535 City Road East
P.O. Box 10464
Thunder Bay, ON.,
P7B 6T9

Dear Mr. Drindak:

Disconnection of Transformer T2
Notification of Approval of Connection Proposal
CAA ID Number: 2005-EX242

Thank you for the detailed information regarding the shutdown and isolation of the 115/13.8 kV step-
down transformer T2 at the Sterling Pulp Chemical facility in Thunder Bay.

From the information provided, our review concludes that the proposed changes will not result in a
material adverse effect on the reliability of the IESO-controlled grid. The IESO is therefore pleased to
grant conditional approval for the modification detailed in the attached assessment report. Any
material changes to your proposal may require re-assessment by the IESO in accordance with Market
Manual 2.10, and may nullify your conditional approval.

Final approval will be granted upon successful completion of the IESO Facility Registration process.
During facility registration you will be expected to demonstrate that you have fulfilled the
requirements and the modification is in line with the proposal assessed by the IESO. Please contact
facility.registration@ieso.ca if you have not received a Facility Registration Summary package within
the next 10 days.

For further information, please contact the undersigned.

Yours truly




Michael Falvo
Manager - Transmission Assessments & Performance
Telephone: (:905) 855-6209
Fax: (905) 855-6129
E-mail: mike.falvo@ieso.ca
cc:      IESO Records

All information submitted in this process will be used by the IESO solely in support of its obligations under the
Electricity Act, 1998, the Ontario Energy Board Act, 1998, the Market Rules and associated polices, standards
and procedures and in accordance with its licence. All information submitted will be assigned the appropriate
confidentiality level upon receipt.
ASSESSMENT SUMMARY

ERCO Worldwide.

Disconnection of Transformer T2
CAA ID Number: 2005-EX242

1.0     GENERAL DESCRIPTION

Due to economic reasons, ERCO Worldwide in Thunder Bay wishes to disconnect their Transformer T2
indefinitely. This shutdown results in approximately a maximum of 18 MW of load being removed from the
system.


2.0     PROPOSED MODIFICATION

As shown in the attached diagram this work will entail locking the 115 kV disconnect switch S-T2 in the open
position. The line drops are to be removed from the load side of the switch and grounded. The disconnect will
be tagged and the associated metering de-registered.


3.0     ASSESSMENT

The transformer has the following ratings:

ONAN: 18 MVA
ONAF: 24 MVA
3 phase, 60 HZ
117.0 kV / 13.8 kV (tap 4)

Since the isolation of the T2 step-down transformer will have no material adverse effect on the IESO controlled
grid, the IESO is therefore pleased to grant conditional approval for this work, subject to satisfying any
requirements for de-registering the isolated facilities.


4.0     NOTIFICATION OF APPROVAL

It is therefore recommended that a Notification of Approval of the disconnection Proposal be issued.

				
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