The failure of a transformer at the Nagogami Substation will cost Rolla Municipal Utilities $191,238, and most of it will be reimbursed by the utility company's insurance provider.
Operations Manager Tom Parker Wednesday evening presented the bill from Jordan Transformer LLC to the Board of Public Works for the resign and repair of the failed Pacific Crest transformer. He noted that MIRMA, Missouri Intergovernmental Risk Management Association, the insurance provider for the utility and the city, will pay for $180,884.
Jordan Transformer, Jordan, Minn., will do a complete rewind/repair of the transformer and fill it with new mineral oil for $167,843. Shipping the unit to Jordan costs $2,917, because it is drained of all oil. Jordan will also charge $4,221 to test it, untank it, inspect it, tear it down and review the design. Shipping it back to RMU, filled with oil and heavier, will cost $5,903. That's where the $180,884 comes from.
Another $10,354 will be paid by RMU out of the capital account. This is $8,346 for a nitrogen system option, including installation, and $2,008 for a new de-energized tap changer option, including installation.
The 12-megavolt ampere unit has already been shipped to Jordan on Nov. 8, 2012, following its Oct. 21, 2012, failure.
It is the second Pacific Crest transformer to fail. Another 10mva unit was rebuilt by Jordan Transformer with costs reimbursed by MIRMA. That unit for the Old St. James Substation was received from Jordan Dec. 28, 2012, and was back online Jan. 7.
In an unrelated substation matter, the board approved an expenditure of $39,990 for steel structure modification at the Industrial Park Substation to allow for an expansion. That amount was the low bid from Tatman Associates Inc., Solon, Ohio.
Parker also reported the following work in the electric department:
• Morrell Avenue/Lynwood Drive: rebuilding existing single-phase overhead distribution system; started Oct. 3, 2012, ongoing.
• Mo-Sci Corp., 4040 N. Hy Point Blvd., new three-phase underground primary, transformer and meter installation at new production facility; started nov. 26, 2012, ongoing.
• Dewing Lane Substation to Lions Club Drive, new feeder circuit, underground and overhead distribution system, started Dec. 3, 2012, ongoing.
• Collegiate Station, 900 Collegiate Blvd., new meter installations on three existing padmount transformers at an apartment complex owned by Missouri S&T, completed Dec. 26, 2012.
Parker reported the following work in the water department:
• Liberty Drive, from McCutchen Drive to Lincoln Lane: replace existing 6-inch cast iron with 8-inch C900 plastic; installed 20 feet of 6-inch C900; installed 1,240 feet of 8-inch C900; installed one fire hydrant; started Nov. 27, 2012, completed Jan. 11.
• Lincoln Lane, from Liberty Drive to Washington Ave.: replace existing 6-inch cast iron with 8-inch C900 plastic, started Jan. 17, 2013, ongoing.
• Highway 72, from Rucker Avenue to Faulkner Avenue: replace existing 6-inch ductile iron with 8-inch C900 plastic; installed new 8-inch C900 plastic water main extension; started Jan. 23, 2013, ongoing.
Page 2 of 2 - • Mo-Sci Corp., 4040 N. Hy Point Blvd., one 4-inch water tap and one 6-inch water tap at new production facility; completed Dec. 26, 2012.
• 607 E. Seventh St., one 3/4-inch water tap, completed Jan. 3.