Bid: Important Notice, U.S. Dept. of Interior, March 23, 1965

IMPORTANT

NOTICE

SIGN AND RETURN WITH BID

UNITED STATES

DEPARTMENT OF THE INTERIOR BUREAU OF RECLAMATION

Invitation No. DS-6245 Supplemental Notice No. 1

Denver, Colorado, March 23, 1965

To all prospective bidders under Invitation No. DS-6245, for SUPERVISORY CONTROL AND DIGITAL TELEMETERING WITH AUTOMATIC DATA LOG-GING FOR MONTROSE POWER OPERATIONS CENTER AND UPPER AND LOWER MOLINA POWERPLANTS, COLORADO RIVER STORAGE AND COLLBRAN PROJECTS, COLORADO, for which bids were to have been received at the office of the Bureau of Reclamation, Building 53, Denver Federal Center, Denver, Colorado 80225, until 2 p. m., Mountain Standard Time, April 6, 1965.

1. The date for opening bids is hereby changed from April 6, 1965, to 2 p. m. , Mountain Standard Time, April 20, 1965.

2. The following changes are hereby made in the above-described invitation: a. The word "shall" is changed to "will" in the following instances:

(1) In Subparagraph B-3~_. (2), page 6, sixteenth line of the page. (2) In Subparagraph B-3b. (3), page 6, eleventh line from the bottom

of the page.

-(3) In Subparagraph B-3b. (4)(b), page 7, sixth line from the bottom

of the page.

-(4) In Subparagraph B-3b. -(4)(e), page 8, ninth line from the bottom

of the page.

-b. In Subparagraph B-4_g_. ( 5), page 12, sixteenth and seventeenth lines of the page, the words "drawing sizes. Drawing No. 11 (40-D-5056), and have the Government title block, " are changed to read "drawing sizes, as shown on Drawing No. 11 (40-D-5056), and have Government title

block, ".

c. In Subparagraph C-9a. (1 )(1), page 28, sixteenth line of the page, im-mediately following the words ",:, ,:, ,:, Invitations No. DS-5934 and DS-5956. " the following is added: "Photostatic copies of structural-steel drawings for comparable equipment now being installed at Montrose Power Opera-tions Center, will be furnished the contractor upon request. "

d. In Subparagraph C-lld. (2)(c), page 33, eighth and ninth lines from the bottom of the page, the words "with a scale length of at least 7 inches and an accuracy of plus or minus 1 percent" are deleted.

e. In Paragraph C-23, page 38, fourth li,ne of the page, immediately foil owing the words '.':~ ,~

*

,

~ay conta~n ele:ctronic tubes. ", the following sentence is inserted:' "The' equipm1

ent sh9-ll be. suitable for synchronizing the generating unit to the power system,' with the unit approaching syn-chronous speed either from the fast or slow direction. "

f. In Paragr'iiph D-1. page 40,' second line from th~ bottom of Hie page, the words "and frequency responsive unit" are deleted.' ··

. g . . In Paragraph D-1, page 41, elev,enth to ~.eventeenth lines, inclu,sive, of the page., the w01;·ds "The cont!'-9-Ctor shall fu:rnis,h ?-nd i"qstall a signal

, generator:',): ,::,>t shail have a test switc_h", in~lusive, are( changed to rrad: "The contractor shall furnish apd "install an aud,io frequency tone

transmitter and receiver, as required in Paragrap:p D-8, · for trans.mission of the signal over the' existing UHF radio link from Upper Molina to Lower Molina, for operation of the water level indicator, alarm and control functions. The signal generator circuit for the audio frequency tone transmitter shall have a test switch".

h. Subparagraphs D-4b. (6) and (7), page 45, fifteenth td twenty-second·

lines, inclusive, of the-page, which read "(6) Pipeline power supply undervoltage alarm ,:, ,~ ,:, for two future operations. "~ inclusive' are. de-le~ed apd the followipg substituted therefor:

. , s

"(.6) Alarm and indicate for undervoltage of pipeline power supply at Bohham-Cottonwood Junction, Bi'g Meadows Junction '

or Decamp Reservoir. This is a single alarm and the Govern-ment wiil ·provide the necessary contact at· Upper Molina to ini-tiate this supervisory alarm to Montrose Power Operations

_Center.

:1'

"( 7) One spare alarm and indication point for one future opera~ tion. This point shall include escutcheon and indicating light. "(8) Alarm and indicate for failure of audio frequency tone

chan-nel (fl) at Upp~r Molina Powerplant.

\

"( 9) · Provision only for four future alar:m and indication points. "

i. In Subparagraph D-5-b. (2), page 47, last line of the page, immediately following the words ",~ *--;:, unit lockout relay (86G). "; the following 'Sen-tences are added:

"Receipt of thi.s alarm shall operate ari ·auxiliary ~elay, the ·

contacts of Y,,hich shall interrupt SUpE:rvisory'tone channel (fl')

to UpJ.,Jer and.Lower Molina Powerplants. See Subpara-graph D-8~_. (1)." · ·, · '

I ,•

., ..

j. Subparagraph D-5b. (6), page 48, thirteenth line of the page, which reads "(6) Two spare alarm ,:, ,:, ,:, future operations.", inclusive, is de-leted and the following substituted therefor:

11

(6) One spare alarm and indication point for one future opera-tion. This point shall include escutcheon and indicating light.

"(7) Alarm and indicate for failure of audiofrequency tone

chan-nel (fl) at Lower Molina Powerplant.

"( 8) Alarm and indicate for failure of audiofrequency tone chan-nel (f6) for equalizing reservoir control and telemetering at Lower Molina Powerplant.

"(9) Provision only for four future alarm and indication points. " k. In Subparagraph D-6b., page 50, nineteenth line 'of the page; imme-diately following the words ",:, ,:, ,:, shall not exceed 2 seconds." the follow-ing is inserted: "Any failure of the supervisory system during a raise or lower operation shall automatically cause termination of that operation at the controlled station. "

l. In Paragraph D-7, page 53, thirteenth line of the page, immediately following the words ",:, ,:, ,:, where it let off. " the following new paragraph is inserted:

"When a telemetering function is selected and initiated, trans-mission of the quantity shall be continuous, exclusive of interruptions by supervisory control or alarm operations, until can -celled. The indication of the measured quantity on the visual readout device shall follow changes in the quantity occuring during the telemetering operation. "

m. In Paragraph D-8, page 53, last two lines of the page, the words "and for transmission of the 3, 145-cycle signal for ,:, ,:, ,:, Molina Powerplant: ", inclusive, is deleted and the following substituted therefor: "for trans-r.:1ission of two continuous telemeter quantities from Lower Molina to Montrose, and for transmission and reception of equalizing reservoir water level from Upper to Lower Molina Powerplants: ".

n. Subparagraph D-8d., pages 54 and 55, which reads "As part of the supervisory control equipment being furnished under Items 1, 2, and 3 of the schedule, ,:, ,:, '~ as part of a party-line signalling circuit. ", inclu-sive, is deleted in its entirety and also the last three lines of Para-graph D-8 which read "All equipment for the above functions, ,:, ,:, '~ by the Government. ", inclusive, are deleted and the material contained on the attached pages, numbered 54A through 54C, is substituted therefor.

o. Drawings No. 3 (482-D-631), 4 (482-D-632) and 6 (864-D-675) are deleted and the attached same-numbered drawings, all revised 3-10-65, are substituted therefor, respectively.

3. If you have given your copy of the invitation to someone else, please for-ward this notice also.

4. Bids submitted must be in accordance with this notice. Sign this notice,

return it with your bid, and acknowledge receipt thereof by listing the number

and date in the space provided therefor in your bid. If bid has been mailed,

acknowledge receipt of this notice by signing and mailing or by telegram to

be received at bid opening office prior to the time set for opening of bids.

All attachments should be returned with the signed supplemental notice.

Failure to acknowledge or return this notice may result in rejection of your bid.

5. If your bid has already been submitted and you want it returned for

revi-sion and resubmission, please advise bid opening office.

2 attachments Firm name

4

B. P. BELLPORT Chief Engineer

INVITATION NO. DS-6245

(SUPPLEMENT AL NOTICE NO. 1)

d. As part of the supervisory control equipment being furnished under Items 1, 2, and 3 of the schedule, the contractor will furnish and install in the appropriate supervisory control cabinets, the following audio fre-quency tone equipment for transmission and reception of the quantities or functions described below via the voice bandwidth circuits described above:

( 1) For Montrose Power Operations Center master station supervisory control and telemetering auxiliary cubicle:

(a) One audiofrequency tone transmitter for operation on

Fre-quency fl· to transmit supervisory control signals on a party-line

basis to matching tone receivers at Lower and Upper Molina Power-plants.

(b) One audiofrequency tone receiver for operation on Frequency f2 to receive supervisory signals from Upper Molina Powerplant. (c) One audiofrequency tone receiver for operation on Frequency f3 to receive supervisory signals from Lower Molina Powerplant. (d) One audiofrequency tone receiver for operation on Frequency f4 to receive megawatt total generation from Lower Molina Powerplant. (e) One audiofrequency tone receiver for operation on Frequency f5 to receive mvar total generation from Lower Molina Powerplant.

(f) One power supply for transmitter and receivers.

(g) One mounting rack for installation of above equipment in the supervisory auxiliary cubicle.

Note: Each of the above receivers shall be equipped with a tone channel monitor relay having SPDT contacts. On receivers for Tones f2 and f3, these relays shall be wired to interrupt all transmission of Tone fl upon loss of channel. A third set of normally closed contacts shall be connected in series with the aforementioned contacts, which will open and remain open upon receipt of the plant lockout signal from Lower Molina Powerplant; this is a point on the supervisory. Upon manual reset of the plant lockout switch at Lower Molina Powerplant, a signal from the supervisory will reclose these contacts to permit restoration of the tone channel. A momentary, single-pole, normally open

push-button shall be furnished, wired across the monitor relay contacts to

operate as a channel reset switch for circuit restoration following a

channel failure. Contacts of the channel monitor relays for Tones f4

and f5 shall be for future connection by the Government.

(2) For Lower Molina Powerplant remote station supervisory control

and telemetering cubicle:

•

INVITATION NO. DS-6245

(SUPPLEMENTAL NOTICE NO. 1)

(a) One audiofrequency tone transmitter for operation on

Fre-quency f3 to transmit supervisory indication signals to Montrose

Power Operations Center.

(b) One audiofrequency tone transmitter for operation on

Fre-quency f4 to transmit megawatt total generation to Montrose Power Operations Center.

(c) One audiofrequency tone transmitter for operation on Fre-quency f5 to transmit mvar total generation to Montrose Power Operations Center.

(d) One audiofrequency tone receiver for operation on Frequency fl

to receive supervisory control signals from Montrose Power Opera-tions CentBr.

(e) One audiofrequency tone receiver for operation on Frequency f6 to receive equalizing reservoir water-level signals from Upper Molina Powerplant.

(f) One power supply for transmitters and receivers.

(g) One mounting rack for installation of above equipment in super-visory cubicle.

Note: Each of the above receivers shall be equipped with a tone

chan-nel monitor relay having SPDT contacts. On the receiver for Tone fl,

the relay contacts shall be wired to operate in series with a set of nor-mally closed Government relay contacts, to the starting circuit of a delay timer which the contractor shall also furnish and install in the

supervisory control and telemetering cubicle. Upon loss of Tone fl,

the timer will begin to operate and time out. Timer delay shall be

adjustable from O to 30 minutes, and timer shall automatically reset upon loss of power to timer. When time out is completed, timer shall operate two circuits, one of which will select a point on the supervisory to transmit an alarm to Montrose Power Operations Center indicating loss of channel. The second circuit will consist of SPDT contacts which

shall be connected to a terminal block that is to be furnished as an

in-ternal part of the supervisory control and telemetering cubicle.

Con-nections will be made by the Government to these contacts to cause plant shutdown.

Contacts of the channel monitor relay for Tone f6 shall be wired to

select a point on the supervisory for transmission of an alarm to Montrose Power Operations Center upon loss of channel.

(3) For Upper Molina Powerplant remote station supervisory control

cubicle:

INVITATION NO. E>S-.6245

(SUPPLEMENTAL NOTICE NO. 1)

(a) One audiofrequency tone transmitter for operation on Fre-quency f2 to transmit supervisory indication signals to Montrose

Power Operations Center.

(b) One audiofrequency tone transmitter for operation on

Fre-quency f6 to transmit equalizing reservoir water-level signals to

Lower Molina Powerplant.

(c) One audiofrequency tone receiver for operation on Frequency fl

to receive supervisory control signals from Montrose Power Opera-tions Center.

Note: The above tone receiver shall be equipped with a tone channel monitor relay having SPDT contacts and shall be wired to a delay timer which the contractor shall -also furnish and install in the supervisory

control cubicle. Upon loss of Tone fl, the timer will begin to operate

and time out. Timer delay shall be adjustable from O to 30 minutes, and timer shall automatically reset upon loss of power to timer. When time out is completed, timer shall operate two circuits, one of which will select a point on the supervisory to transmit an alarm to Montrose

Power Operations Center indicating loss of signal. The second circuit

will consist of SPDT contacts which shall be connected to a terminal block that is to be furnished as an internal part of the supervisory con-trol cubicle. Connections will be made by the Government to these contacts to cause plant shut down.

(4) The tone equipment shall be Radio Frequency Laboratories Type 2056, Quindar Electronics Type QT-30, or equal, for three -state, frequency shift operation. Speed of operation of the equipment shall be as follows:

Frequency fl f2 f3 f4 f5 f6 Speed of operation

As required by supervisory control equipment. As required by supervisory control equipment.

As required by supervisory control equipment.

15 pps maxim um 15 pps maximum 10 seconds per cycle

The contractor shall furnish proposed tone operating frequencies for approval which will fall within the frequency spectrum of 300 to 3, 400

cycles. Frequencies s'hould be selected so as to conserve spectrum

consistent with possible intermodulation.

Inputs and outputs of all audio tone transmitters and receivers shall

be brought out to an appropriate terminal block internal to each

super-visory control cubicle on a 4-wire basis, 2-wire send, 2-wire receive.

Connections to these points will be made by the Government to the

com-munication channels described in Subparagraphs D-8~_. , b., and c.

above.

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SUPERVISORY CONTlWL BOARD

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..fwnis~ec( sciuip..,.,e111t fo,.. w~ic.h ~e. co•..t,..d.Cto.,- sho.ll p.-.ovide. 6~c.e., Mountin1 ho/es «Hd wi,ie'J i"" tJ.e sopevvisor;; COHtro/ boo.rd <d: Lcwer /t'loli"<t Power pl,u,t. The. Wd.t"-v leval ;,,d ictitol" (Oe(qiJ A)

wi II be f/osk-mouv,td o" th~ +voHt p,.v.e/; al/ otkev GovevHMNi!,,t

+u,~isl.-ed <!.j.UiP"< .... r wi II be mOvHted i1<ter>1ally.

2.. All Gove,n1>1ent +vv,iishad e1uipme>1t will be ivista.lle.d ;., fJ,e

,oupe.-vosovy cov,tvo/ boavd culiide by the Gove,.,..,e11t «t

tl.e powev-pla.v,t" site..

3. The ve«r po.voe/ of the supe,vi,.,,vy c.o,itv-ol bo.,,,..d mo.y be.. hi'1'je.<l, at the optio"1 of the co>1tvo.dorA fov Q.Ccess l'o swiMjiJtq po.He.ls, if ""iUiV'ed. The widf/,, of. 't:"e ..-eav doov sk«// .,o't

v,:ceed 34 iv.ekes a.nd shall l>c hi>1<jed o,i tJ..e Y'i9'1t side <U vie"1e..d +t/"oflll\ tY.e. J"'e.4 I/",

f. Det .. ;f D ;..,dica.tes ti..e di..,e11sio.,, of tJ..e Gove""""""'"t fuv.,isl,,...J

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ALWAYS nun1< SAfETV

UNITED STATES DEPARTMENT OF THE INTElftOR

BUlfEAU OF lfECLAMATION

COLL8AAN ANO CGLDllADO RJVER .S'Tt'lll.AC.£. PftoJaCTS - COLOMOO

UPPER AND LOWER t-10LI NA POWER PLANTS

ELECTRICAL INSTALLATION SUPERVISORY CONTROL SOARD CIA4

G~NERAL ARRANGEMENT

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i/ER MOLINA SUPERVISORY CUBICL.e

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ARRANGEMENT _ _ _ _ _ _ 482-D-63/

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ALWAYS nunK SAfETV

UN/TEO STATES

DEPARTMENT OF THE INTElf/Olf tlUlfEAV OF lfECLAMATION

COLL.BAAJ.J A'IJD C O L ~ RJV•~ SToa.AG,g: AlOJf:CTS - COL.0.

4

UPPER AND LOWER. MOLINA POWEP.PLANTS ELECTRICAL INSTALLATION

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OATA POINT 0111.ECTO,.Y

LOWIUI. lo\OLIN"' STATION NO, 2 .s,,,.,CEl I I I I ---s;;;~ I I

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- 3 ' ,"min. - _ _ _ -_ - _ -_ _ _ -48"mAx. TOP VIEW

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INSTALL IN , . HO 3,11 r>1in. _ _ _ 48"' MAX,

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FRONT VIEW NOTES

The cont,o.ctor .sha.11 aJhe,c. -fo -fhs d,men.s1ons .,J,,owM Ol,;\ tkis draWil-'\,.

2. The i"dic<>.tul. "-"'"""je.Me-,t of confrols 011 the top

is a. su9qe.ste.d 'lr'YaV\qe ma"'t ovdy a.1o1d ti.ta (:OJ.ltra.d,

vo.,y fro"" tl,,e ;.,dicat..J sc.helN'e , subject tot~~

of the cont.-a.cti"~ of.ricer.

3-/0-'1.S 1/?EVtS,ED DM'1~N.5NJN'S AND Ol

0 - c)Y.,rJ/C,. VIEW'- RELOC.AJ~D NAM£P£Ar£

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ALWAYS n11nK SAfE1

"UNITED STATES OEPAFf.TMENT OF THE INTER

BUREAU OF RECLAMATfOI

COLL BR.AN M.JD COJ..OAAOO PI\/ER. STOil.A&,£ pftO,

MONTROSE POWER OPERATl1

ELECTRICAL INSTALU

SUPERVISORY AND TELEMETER!

FOR UPPER AND LOWER MOLINA

GENERAL ADRANGEM,

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