HomeMy WebLinkAbout2000-167ORDINANCE NO 16LO
AN ORDINANCE PROVIDING FOR THE EXPENDITURE OF FUNDS FOR EMERGENCY
PURCHASE OF REPAIRS REQUIRED DUE TO FIRE DAMAGE TO THE SPENCER
STATION #3 COOLING TOWER IN ACCORDANCE WITH PROVISION OF STATE LAW
EXEMPTING SUCH PURCHASES FROM REQUIREMENTS OF COMPETITIVE BIDDING,
AND PROVIDING AN EFFECTIVE DATE (PURCHASE ORDER 05460 TO MIDWEST
TOWERS, INC IN THE AMOUNT OF $316,538)
WHEREAS, state law and ordinance require that certain contracts requiring an
expenditure or payment by the City in an amount exceeding $15,000 be by competitive bids,
except in the case of public calamity where it becomes necessary to act at once to appropriate
money to relieve the necessity of the citizens of the city, or in case of unforeseen damage to
public property, machinery or equipment, and,
WHEREAS, the City Manager has recommended to the City Council that it is necessary to
purchase goods or services due to the following emergency conditions outlined in the memorandum
attached hereto, incorporated herein by reference, NOW, THEREFORE,
THE COUNCIL OF THE CITY OF DENTON HEREBY ORDAINS
SECTION 1• That the City Council hereby determines that there is a public calamity
that makes it necessary to act at once to appropriate money to relieve the necessity of the citizens
of the city, or to provide for unforeseen damage to public property, machinery or equipment, and
by reason thereof, the following emergency purchases of materials, equipment, supplies or
services, as described in the "Purchase Orders" referenced herein and on file in the office of the
Purchasing Agent, are hereby approved
PURCHASE
ORDER NUMBER VENDOR AMOUN
05460 MIDWEST TOWERS, INC $316,538
SECTION 2 That because of such emergency, the City Manager or designated employee is
hereby authorized to purchase the materials, equipment, supplies or services as described in the attached
Purchase Orders and to make payment therefore in the amounts therein stated, such emergency purchases
being in accordance with the provisions of state law exempting such purchases by the City from the
requirements of competitive bids
SECTION 3. This ordinance shall become effective immediately upon its passage and
approval
PASSED AND APPROVED this the l�a — day of 12000
EULINE BROCK, MAYOR
ATTEST
JENNIFER WALTERS, CITY SECRETARY
B )A J& I
AP OV$D AS TO LEGAL FORM
HERBERT L -P]�Y, CYI,�ATTORNEY
BY
05460 EMERGENCY C EORDER-ORDIANCE 2000
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PAGE 1 OF 5
ATTACHMENT 2
Midwest Towers, Inc.
"Quahly and Service with Integrity"
Denton Municipal Electric
Denton, Texas
Subject* Denton Municipal Generating Station
Unit 3 Cooling Tower Repair
Midwest Towers' Proposal No MT-R-2101
SCOPE OF WORK
1 DRIFT ELIMINATORS
Remove and replace as required fire damaged drift eliminators and
support Install Brentwood CDX-150 PVC drift eliminators NeN
drift eliminators will be supported on custom manufactured PV;,
drain boards/shelf supports
2 HOT WATER BASINS —EAST SIDE
Remove a minimum of 2 basins decks 100% and approximate y
10% of the third cell for inspection and replacement Replace file
damaged hot water basins, curbs, distribution boxes, nozzles, 2" x
6" basin joists, 2" x 6" midbay nailers, 2" x 4' joist supports and 4" x
4" stub post full length for outboard handrails Install new 2" x 4"
longitudinal joist supports, 2" x 6" transverse joists and 2" x 0"
midbay nailers The new 2" x 6" transverse joists will be spliced it
the original splice block location Install new 3/4" CCX pressuie
treated plywood decking and 2" x 10" longitudinal and transverse
basin curbs Each basin will be sealed around the perimeter wish
chamfered 2" x 2" and caulked with Vulkem Mastic to prevent
leakage New custom manufactured distribution boxes will to
installed at each existing valve location Also included will be neN
polypropylene target nozzles New walkways will be installed tte
full length of damaged area New hand and knee rails will to
installed on the new 4" x 4" stub post
' rpnpoeiiro Hwy 19 East • P O Box 1465 • Chickasha, OK 73023 c T i
ku4 fa6,iG� Tel (406) 224-4R22 •Fax (405) 224-4625
ATTACHMENT 2
PAGE 2 OF 5
Denton Municipal Electric
Scope of Work
Page 2
3 SPLASH FILL
Remove fire damaged fill as required and install new fill The exa(.t
quantity will have to be determined after the header pipe and basin
decking is removed for inspection For now, 20% replacement of
the top 6' of 2 cells is estimated and considered liberal The fill w II
be Opti-Bar (existing) in kind replacement New slotted 2" x i "
members will be installed to support the existing wire hangers
4 HOT WATER BASIN COVERS
Install hot water basin enclosures as required to replace fire
damaged area Included will be new bolted 2" x 6" transverse loi,,t
supports and nailed 2" x 4" longitudinal joists Enclosures will be 6
oz , 5 33" corrugated fiberglass Area between fandeck and
handrails will remain open for ventilation Included will be all
necessary attaching hardware New access ladders will be
installed from the fandeck down to the hot water basin walkway.
The enclosure roof will be framed for ladder access to walkways
5 PLENUM PARTITION WALLS
New 1/2' plywood plenum partition walls will be installed as
necessary to replace fire damaged walls
6 STRUCTURAL REPAIRS
Our first concern is to safely remove all fire damaged mechanical
equipment as they pose the greatest risk due to their extreme
weight Professionals should accomplish this as soon as possible
to prevent their falling and causing further damage
Replace as necessary all Redwood structural members damaged
by fire Again, this will be a precarious endeavor given the
conditions for scaffolding and safely replacing certain member,
Although we have completed numerous projects similar to this one,
each in it's own way is unique and requires our safety people
ATTACHMENT 2
PAGE 3 OF 5
Denton Municipal Electric
Scope of Work
Page 3
(Structure cunt )
working closely with our construction supervisors in staging a
project such as this
All members that have been compromised by burning or charring
will be replaced All vertical 4x4 columns will be replaced down to
their original splice point All diagonal braces will be replaced in
whole, full length All horizontal structural members will be
replaced in their entirety, to original manufacturers splicing point',
Splicing of any other structural member will be completed to
original points, including those that enter longitudinally through a
partition wall Included will be #1 Structural Redwood, pressure
treated, and new 304 SST attaching hardware
7 FAN DECK
Replace in kind as required, Redwood 2 x 6 tongue & groove
decking A minimum of 2 complete cells will be replaced in their
entirety, and approximately 25% of the third cell Included with
decking is all new joists, joist supports, bridging for fan stack,,
quake blocks for stacks, and all necessary 304 SST attaching
hardware
This would be a very convenient opportunity to replace the balance
of a very poor fan deck We can discuss this further if desired
8 DISTRIBUTION PIPING
Supply and install 30" 0 FRP distribution piping from riser flange,
into the forth bay of third cell At that juncture piping will be cut and
new pipe glassed to existing pipe Included will be new pipe, field
fiberglass wrap kit, valve stub flanges, rebuilding of existing valve,,
new wood distribution boxes, distribution saddle supports, and all
necessary gaskets and hardware Also included will be new FR'
grating for access walkway between valve distribution boxes
PAGE 4 OF 5
ATTACHMENT 2
Denton Municipal Electric
Scope of Work
Page 4
9 ENDWALL CASING
Remove endwall casing only as required to access and replace
burnt structure This will be approximately 8 feet downward froin
fan deck, or to first full sheet below damage New casing will ke
installed after structure is replaced New casing will be 12 ounce
PSF, 4 2" corrugated FRP Each vertical seam will be caulked to
prevent leakage and attached to new structure will SST nail
Each nail with neoprene SST bonded washers Included in th s
item is cost of manlift
TOTAL NOT TO EXCEED BASE BID $ 194,410 00
ADDITIVES TO BASE BID
10 FAN STACKS
In two —(2) cells, remove fire damaged fanstacks and supply neN
rigid fiberglass fanstacks manufactured by Midwest Towers The
throat diameter will be 22' and the inlet diameter will be 25' The
height will be 14' Also included will be access door, removab e
viewport, external motor coupling shaft guard and stainless ste-31
attaching hardware Segments from existing stack will be salvaged
for repair of third cells damaged panel Also included is FRP kit to
repair small hole in bottom of one panel Labor for installation s
included in base bid estimate
Total Cost Per Fan Stack $ 9,894 00 Each �
ATTACHMENT 2 PAGE 5 OF 5
Denton Municipal Electric
Scope of Work
Page 5
11 FANS
In two —(2) cells, remove fire damaged fans and install new Hudscn
model APT-22H-6 blade fan assemblies New assemblies mcluce
6 each FRP fan blades, galvanized hubs bored for Marley geari,
FRP center seal disc, and all necessary attaching hardware Labor
for installation is included in base bid estimate
Total Cost Per Fan Assembly 1 $ 6,885 00 Each 71
12 DRIVE SHAFTS
In two —(2) cells, remove fire -damaged drive shafts Supply Adde x
composite fiber shafts, model LRH400 27OSS Labor for
installation is included in base bid estimate
Total Cost Per Shaft 1 $ 1,854 00 Each 71
13 GEAR REPAIRS
Inspect for heat damage and routine repair existing series 32 gear
reducers as follows
Routine repair includes new bearings, oil seals shims, and bolts
Sandblast exterior cases, and apply 3 coats epoxy paint Reassemble
gear perform operational check and test run Labor for installation is
included in base bid estimate
New series 32 gears would cost approximately $ 14,000 each anc
are 4 weeks ARO
Total Routine Repairs / Per Gear $ 8,970 00 Each
14 MOTOR & GEAR SUPPORT FRAMES
Remove frames from South two cells Inspect for heat distorticn
and reliability Provide new frames if required Included will be Ell
necessary 304 SST attaching hardware Labor for installation s
included in base bid estimate
Total Cost Per New Frame $ 2,950 00 Each