1992-181AN ORDINANCE PROVIDING FOR THE EXPENDITURE OF FUNDS FOR PURCHASES
OF MATERIALS OR EQUIPMENT WHICH ARE AVAILABLE FROM ONLY ONE SOURCE
IN ACCORDANCE WITH THE PROVISIONS OF STATE LAW EXEMPTING SUCH PUR-
CHASES FROM REQUIREMENTS OF COMPETITIVE BIDS, AND PROVIDING AN EF-
FECTIVE DATE.
WHEREAS, Section 252.022 of the Local Government Code provides
that procurement of items that are only available from one source,
including: items that are only available from one source because of
patents, copyrights, secret processes or natural monopolies; films,
manuscripts or books, electrlclty, gas, water and other utility
purchases, captive replacement parts or components for equipment,
and library materials for a public library that are available only
from the persons holding exclusive distribution rights to the ma-
terials; need not be submitted to competitive bids, and
WHEREAS, the City Council wishes to procure one or more of the
items mentioned in the above paragraph, NOW, THEREFORE,
THE COUNCIL OF THE CITY OF DENTON HEREBY ORDAINS'
S CTI_~. That the following purchases of materials, equip-
ment or supplies, as described in the ,,Purchase Orders" attached
hereto, are hereby approved:
PURCHASE AMOUNT
ORDER NUMBER VENDOR
30267 GENERAL ELECTRIC $74,471.00
30268 GENERAL ELECTRIC $85,000 00
SE TI~. That the acceptance and approval of the above
Items shall not constitute a contract between the City and the
person submlttlng the quotation for such items until such person
shall oomply with all requirements specified by the Purchasing
Department
SECTION III That the City Manager is hereby authorized to
execute any contracts relating to the items specified in Section I
and the e×pendlture of funds pursuant to said contracts is hereby
authorized.
SECTION IV That this ordinance shall become effective immedi-
ately upon its passage and approval
ATTEST:
JENNIFER WALTERS, CITY SECRETARY
APPROVED AS TO LEGAL FORM.
DEBRA A. DRAYOVITCH, CITY ATTORNEY
DATE OCTOBER 20, 1992
CITY COUNCIL REPORT
TO Mayor and Members of the City Council
FROM Lloyd V Harrell, City Manager
SUBJECT. PURCHASE ORDER #3026? - GENERAL ELECTRIC COMPANY
RECOMMENDATION: We recommend this purchase order in the amount of $74,471 00
be approved as presented
SUMMARY: Purchase Order #30267 to General Electric Company is for the hourly cost
of General Electric personnel to assist in the ma]or overhaul of Unit Four Turbine
Generator The services performed by the General Electric Techmolans is only
available from the omg~nal equipment manufacturer and is exempt from the b~d
process as a single source procurement
BACKGROUND. Purchase Order #30267, Memorandum from Jim Thune, Electmc
Production Manager and Field Engmeemng Service Rates pubhshed by General
Electmc effective 2-4-91
PROGRAMS~ DEPARTMENTS OR GROUPS AFFECTED: Maintenance of Electric
Generation Plant and Equipment, Electric Utility Department and Citizens of Denton
FISCAL IMPACT: Funds for this expenditure will come from 1992-93 budget funds
account #610-080-0251-8339 current balance is $514,991 34
.~espectfully submitted
City Manager
Approved.
Name TomD Shaw, C P M.
Title. Purchasing Agent
304 agenda
RECEIVL~
TO Jim Harder, Director Electric Utilities
FROM' Jim Thune, Electric Production Manager
SUBJECT Spencer Unit Four Turbine Generator Ma3or Overhaul
DATE October 9, 1992
Dear Jim
The attached requisition funds the anticipated labor portion for s~te f~eld
services and estimated shop services required to overhaul Unit Four Turbine
Generator
A ma3or overhaul is scheduled for Unit Four Turbine Generator this winter (Nov-
Dec 1992) The overhaul will include complete disassembly of the turbine steam
path, removal of the generator field, disassembly of turbine stop, control and
extraction valving
Major service and repairs to be accomplished during this overhaul include
* Replace first stage nozzle per GE TIL recommendation
* Replace bushings, stems and discs to restore control valve response
* Install first stage metal temperature indication and differential
expansion instrumentation to effect improved start up condition control
Inspect and test generator field and stator
Install new erosion strips on L-O last staqe rotating bladlng
Low speed balance the rotor assembly
Modify back end stationary diaphragms for improved moisture drainage
Numerous component inspections and service to restore machine
clearances
Periodic ma3or servtce ts necessary to maintain reliability of the steam turbine
and generator A major Inspection Is typically recommended every f3ve to six
years depending on service Our machines have fewer hours than base loads
machines However, hundreds of starts or cycles do contribute adversely to
machine reliability and must be factored tnto the ~nspect~on schedule
The last major Inspection of Unit Four Turbine was completed tn January 1988
Since that time the Unit has experienced over 325 starts and 6500 hours of
operation The total cost of this overhaul ~s estimated around $300,000 O0
Spread over the period since last overhaul, that cost represents approximately
2 mils tn maintenance cost The rel~ablllty impact concerns over 1 million
PAGE TWO
MAJOR OVERHAUL
dollars of annual capacity revenue of which approximately 23% is supported by
Unit Four availability
General Electric provides propriety service specific to our machines Some non
proprietary services may be contracted to others although risk associated with
other's expertise would be assumed by the machine owner The attached
requisition funds the minimum servtce levels associated wtth proprletarv work and
field engineering
Funding for this request has been budgeted under 8339, General Repairs and Fees
for 8339 Technical Services Accounts
Upon your review and concurrence, please forward for Council authorization
Thank You,
Eloctric Production Manager
JT/ks
Attachments
File XXVI
REQUISITION/PURCHASE REQUEST
Un~t4 Jim
DATE OCTOBER 20, 1992
CITY COUNCIL REPORT
TO Mayor and Members of the City Council
FROM Lloyd V Harrell, City Manager
SUBJECT PURCHASE ORDER # 30268 - GENERAL ELECTRIC COMPANY
RECOMMENDATION: We recommend this purchase order in the amount of $85,000 00
be approved as presented
SUMMARY: Purchase Order #30268 to General Electric Company is for the estimated
cost of General Electric service shop personnel for services related to the major
overhaul of Unit Four Turbine Generator These services are only available from the
orlgunal equipment manufacturer and therefore exempt from the bid process
BACKGROUND: Purchase Order #30268, Memorandum from Jim Thune, Electric
Production Manager
PRoGRAMS~ DEPARTMENTS OR GROUPS AFFECTED: Maintenance of Electric
Generation Plant and Equipment Electric Utility Department and Citizens of Denton
FISCAL IbIPACT Funds for this expenditure will come from 1992-93 budget funds
account #610-080-0251-8339 current balance is $514,991 34
.~bspectfully submitted
~L~oyd V H~
City Manager
Approved'
Name TomD. Shaw, C P M.
Title. Purchasing Agent
303.agenda
RECEWEn
CiTY OF DE~; l'~
PURCHASi~ ~
OCT -9 PM 2' 41
TO Jlm Harder, Director Electric Utilities
FROM Jim Thune, Electric Production Manager
SUBJECT Spencer Unit Four Turbine Generator Ma3or Overhaul
DATE October 9, lgg2
Dear Jim
The attached requisition funds the antlc3pated labor portion for s3te f~eld
serwces and estimated shop services required to overhaul Unit Four Turbine
Generator
A ma3or overhaul is scheduled for Unit Four Turbine Generator this winter (Nov-
Dec 1992) The overhaul will include complete disassembly of the turbine steam
path, removal of the generator f3eld, disassembly of turbine stop, control and
extraction valwng
Malor service and repa3rs to be accomplished during this overhaul ~nclude
* Replace first staqe nozzle oer GE TIL recommendation
* Replace bushings, stems and d~scs to restore control valve response
* Install flrst stage metal temperature indication and differential
expansion instrumentat3on to effect Improved start up condition control
$ Inspect and test generator field and stator
* Install new erosion str3ps on L-O last stage rotating bladlng
~ Low speed balance the rotor assembly
* Modify back end stationarv d~aphragms for improved moisture dra~naqe
~ Numerous component inspections and service to restore machine
clearances
Periodic major service is necessary to maintain reliability of the steam turbine
and generator A ma3or inspection ~s typically recommended every f3ve to six
years depending on serv3ce Our machines have fewer hours than base loads
machines However, hundreds of starts or cycles do contribute adverselv to
machine reliability and must be factored into the 3nspection schedule
The last major inspection of Unit Four Turb3ne was completed 3n January 1988
S~nce that time the Unit has experienced over 325 starts and 6500 hours of
operation The total cost of this overhaul is estimated around $300,000 O0
Spread over the per~od since last overhaul, that cost represents approx3matelv
2 mils in maintenance cost The reliab31ity impact concerns over 1 millton
PAGE TWO
MAJOR OVERHAUL
dollars of annual capacity revenue of which approximately 23% is supported by
Unit Four availability
General Electric provides propriety serwce specific to our machines Some non
propr3etary services may be contracted to others although risk associated with
other's expertise would be assumed bv the machine owner The attached
reouls3t~on funds the minimum service levels associated with propr3etarv work and
field engineering
Funding for this request has been budqeted under 8339. General Repairs and Fees
for 8339 Technical Services Accounts,
Upon your review and concurrence, please forward for Council authorization
Thank You,
Electric Production Manager
iT/ks
Attachments
File XXVI
REQUISITION/PURCHASE REQUEST
Un3t4.Jim