1989-0702651L-1/3689
NO ~qQ
AN ORDINANCE ACCEPTING COMPETITIVE BIDS AND AWARDING A CONTRACT
FOR THE PURCHASE OF MATERIALS, EQUIPMENT, SUPPLIES OR SERVICES,
PROVIDING FOR THE EXPENDITURE OF FUNDS THEREFORE, AND PROVIDING
FOR AN EFFECTIVE DATE
WHEREAS, the City has solicited, received and tabulated
competitive d for the purchase
in a accordance necessary w th the materials, procedur procedures
of
supplies or services
state law and City ordinances, and
WHEREAS, the City Manager or a designated employee has
reviewed and recommended that the herein described bids are the
lowest uip
ies serviceseasoshownein bidhse "BidtProposals" lsubmigtt dm therefor, and or
WHEREAS, the City council has
the appropriation of funds to be
materials, equipment, supplies or
herein, NOW, THEREFORE,
provided in the City Budget for
used for the purchase of the
services approved and accepted
THE COUNCIL OF THE CITY OF DENTON HEREBY ORDAINS
SECTION I That the numbered items in
bids for materials, equipment, supplies, or
"Bid Proposals" on file in the Office of
Agent filed according to the bid number
hereby accepted and approved as being the
for such items
BID ITEM
NUMBER NO
9983 ALL
VENDOR
Temple, Inc
the following numbered
services, shown in the
the City's Purchasing
assigned thereto, are
lowest responsible bids
AMOUNT
$12,288 00
SECTION II That by the acceptance and approval of the above
numbered items of the submitted bids, the City accepts the offer
of the persons submitting the bids for such items and agrees to
purchase the materials, equipment, supplies or services in
accordance with the terms, specifications, standards quantities
and for the specified sums contained in the Bid Invitations, Bid
Proposals, and related documents
SECTION III That should the City and persons submitting
approved- ~ and accepted items and of the submitted bids wish to
enter into a formal written agreement as a result of the
acceptance, approval, and awarding of the bids, the City Manager
or his designated representative is hereby authorized to execute
the written contract which shall be attached hereto, provided
that the written contract is in accordance with the terms,
conditions, specifications, standards, quantities and specified
sums contained in the Bid proposal and related bid documents
herein approved and accepted
SECTION IV That by the acceptance and approval of the above
numbered items of the submitted aids the city council hereby
the
to amount a war d in
authorizes the expenditure of funds therefor
accordance with the approved bids or pursuant
contract made pursuant thereto as authorized herein
SECTION V That this ordinance shall become effective
immediately upon its passage and approval
,
PASSED AND APPROVED this / day of 1989
RAY STE NS, M YOR
ATTEST
J NIFER A.T RS, CRETARY
APPROVED AS TO LEGAL FORM
DEBRA ADAMI DRAYOVITCH, CITY ATTORNEY
BY l/
PAGE TWO
DATE JUNE 13, 1989
CITY COUNCIL REPORT
TO Mayor and Members of the City Council
FROM Lloyd V Harrell, City Manager
SUBJECT: BID# 9983 - CROSSARM AIRSWITCHES
RECOMMENDATION we recommend this bid be awarded to the lowest
bidder meeting specifications, which ls, Temple, Inc , at a unit
price of $2,048 00
SUMMARY This bid is for six (6) Crossarm Airswitches to be used
in overhead electric distribution Bridges manufactures the only
switch meeting specifications, due to their added safety features
Temple, Inc , is the lowest bidder offering Bridges Airswitches
BACKGROUND Tabulation Sheet, Memorandum
PROGRAMS, DEPARTMENTS OR GROUPS AFFECTED Electric Distribution
Department
FISCAL IMPACT: Budgeted Account #610-080-0252-2519-9219
*Ress fully u mitt
arre ll
City Manager
Prepared by
Name Denise Manning
Title: Buyer
Approved
o Marshal .
TPurchasing Agent
010 DOC
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ORIGINAL
CITY of DEsNTON / 215 E McKinney / Denton, Texas 76201
MEMORANDUM
To Ernie Tu1108, Director of Electric Utilities
From Keith Dubea, Engineer Associate I
Date June 1, 1989
Subject BID EVALUATION #9983 - CROSSAR14 AIR-SWITCH
On Tuesday, may 23, 1989, bids were opened to purchase six
cross-arm air-switches We had nine venders to respond to
the bid invitation of the nine venders, one quoted Wesco
Type, two S & C Alduti-Rupter, two A B Chance, two quoted
Bridges Style crossarm air-switch, and two no bidders
* Cummins S & C @ $1,421 90/per or $ 8531 40
* Priester Supply #2 S & C @ $ 1,450/per or $ 8,700
* Poleline Electric A B Chance @ $ 1,775/per or $ 10,650
* Priester Supply #1 A B Chance @ $ 2,000/per or $ 12,000
* Temple Inc Bridges @ $ 2,048/per or $ 12,288
* FRP Marketing Bridges @ $ 2,098/per or $ 12,558
* Wesco Inc Westinghouse @ 2,210/per or $ 13,260
The switches were evaluated to minimize equipment failure
and maintenance cost
Some of the conditions the department analysis were
A) Maximum dead-end load per phase or conductor 7
1) Bridges - 10,000 #
2) S & C - 8,000 #
2) A B Chance - 6,000 #
B) Linkage adjustment in field installation 7
1) Bridges - None
2) S & C - Minor initial adjustment required
3) A B C - Some initial adjustments are required
and after several switching operations
C) Number of exposed rotating switch components ?
1)
Bridges -
(1)
one ball-joint assembly
2)
S & C -
(7)
seven pin-connecting assembly
3)
A B C -
(11)
eleven pin-connecting assembly
D) Procedure to replace damaged/broken dead-end insulator ?
1) Bridges - dead-end energized conductor and replace
insulator
2) S & C - Same as Bridges
3) A B C - disconnect conductor from switch, replace
two special insulators and galvanize
tubing from blade assembly
E) Future automation for air-switches ?
1) Bridges - all electrical and electronic parts
2) S & C - same as Bridges
3) A B C - same as Bridges
F) Enclosed mechanical housing ?
1) Bridges - totally enclosed operating mechanism
2) S & C - operating mechanism are exposed to weather
3) A B C - same as S& C
G) Operating under icy or frozen condition ?
1)
Bridges
- open or close successfully
in each case
2)
S & C
- some restriction on amount
of ice build-up
3)
A B C
- No data available at this
time
H) Motor operating response time ?
1)
Bridges
- one
(1) Second
2)
S & C
- 0 75
Seconds
3)
A B C
- 2-
3 Seconds
I) Number of control operations from a single DC battery ?
1) Bridges - 50 operations during a 23 minute period,
special DC storage energy 22 Volts DC
2) S & C - 12 operations by use of a standard 12 Volt
DC auto battery
3) A B C - No data available
ALL EQUIPPED WITH A BUILT IN AC/DC CHARGER
J) Dimension of motor operator ?
1)
Bridges
- 8"
X 8" X
36" long
2)
S & C
- 20
X 2011
X 44, Wt 190 #
3)
A B C
- 23
8" X 2
1" X 8" X 13 "
K) List of Bridges features that are very competitive ?
a) Cost of motor operator AC or DC
AC estimated cost $ 1,050 - 3,500
DC estimated cost $ 2,660 - 3,500
b) Life expectancy
c) Number of manual operations at full-load(600 amp)
Under these very important conditions, we compared the three
types of switches and determined that the Bridges is
definitely the best switch for our application on the
electrical distribution system because of the following
conditions
1) 10,000 # dead-end loading capacity
2) less exposed rotating parts
3) standardize style air-switch on Distribution network
4) mechanisms are encased in steel housing
5) no maintenance is required
Therefore, we can conclude that the Bridges Crossarm
air-switch either meet or exceed the required
specifications, where its competitors failed in many of the
conditions listed above We recommend that the bid be
awarded to TEMPLE INC for $ 12,288
The following people were called in regard to the Kearney,
S & C, and Bridges Crossarm Air-Switch
1) Houston Power & Light
Dave Rios, Distribution Standards
Houston, Texas
(713)623-3492
Comment of Kearney/KPF "Experience malfunctions with
contacts, pin assembly, and no
problems with the Bridges "
2) Gulf States Utilities
Michael Laborde, Supervisor
Beaumont, Texas
(409)838-6631
Comments of S & C - Alduti-Rupter
Division Engineering
"Experience problem with
motor operator on
automation distribution
system and rotating
operating shaft"
xc R E Nelson, P E , Executive Director of Utilities
Don McLaughlin, P E , Engineer Administrator
Denise Manning, Purchasing Agent