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4.01 GENERALThis section describes the hydraulic design of the power tunnel, surgetank, and penstock for Alternate Plan III of the Crater Lake phase of theSnettisham power facilities. This alternate is unique for the Corps ofEngineers in that it includes an unvented surge tank which will be referredto as an air chamber surge tank. The air chamber design requiresconsideration of the plant operating conditions, expected turbinecharacteristics and the total head losses in the conduit system from thereservoi r to the powerhouse. The power condu it wi 11 be connected to aturbine-generator unit which is to be installed in the eXisting powerhousewhich was built for the Long Lake phase of the Snettisham project.84-2
4.02 DESCRIPTION OF THE POWER CONDUIT. The power conduit for AlternatePlan III is the same as for the recommended plan as described in AppendixB1...B4-3
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. c-o,.oy t:) ~3 J .-7I ~U~~T Snett
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SYNOPSISThe Long Lake - Crater Lake
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LOCATION:SNETTISHAM PROJECT, ALASKA
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Maximum momentary head, ft(during l
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(3) Based on generation of 27.3 MW
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APPENDIX AGEOTECHNICAL DATAAlA2GEOM
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A. "AVERAGE" FAULT CONDITION.GEOMEC
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For the existing conditions the fol
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SUMMARY ."'OGHOLE Nv.N 93 61':' I S
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SUMMARY LOG N 93614 1 ~H~~T3 Of 3HO
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SUMMARY LOG95473H 0 LEN DH 99 9 160
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SUMMARY LOG N 95473 I SWFFT 4 OF 4H
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SUMMARY LOGHOLE NE9361186371Crater
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SUMMARY LOG N 93611 I SHEET 4 OF 4H
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SUMMARY LOGHOLE N DH 101 cont'd9411
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N 93.616 lSME£T 1 OF4SUMMARY LOGHO
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DEPTH OF HOLE9361686380DRILL OATES
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SUMMARY LOG I SHEF:T 1 OF' 4H 0 L E
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SUMMARY LOGHOLE NO.I N 9L271.~9 I S
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SWN\I~ARYLOGH 0 L E NO.DDH-10~I~N=-
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LOGH 0 L E NO. DDH-lO~ HE N;;--,,"9
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SUMMARY LOGHOLE NO.DDH-IO~PROJECT S
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SUM~AR,(LOG\ N ac.~l~ I SHEET 2 OF,
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SU,'t1:--,lARY LOG I N 0)':'1 ,c,.
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SU~AMARYLOGHOLE NO.N 95159. I SHF E
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SUMMARY LOG N 951S9. 1 SHct=:T 4 OF
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SU:\,1:--.4ARY LOGH 0 L E NO.DIJH-1
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LOGHOLE NO. DCii-107 I SUR,rACe: EL
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,S UMMARY .~OG N 93451 r SHEff 1 Qf
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SUMMARY LOGH 0 L-E NO. DDH-I09~NIiI
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_liUMMARY lOG N 93685 1 ~W~F'T 3 OF
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SUMMARY LOGH-O-L E NO.DDH-110N 9354
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$UMMARY I~~GK 93729.8HOLE N . DH-ll
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N 93729.8~UMM~RY Ib~G.. OL;- N . Dh
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HOLEI PROJEC_,- e"WLa,. COIoIP.~ ~F
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,~UMMARY IbOGN Q
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Il,UMMARV ,~~G N 93767.6I OLE N . D
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[ ~UMMARY LOG N 93767.6OLE NO. rlH
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~UMMARV I'cfGN q17fi7 fiOLE N DH-1l
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SUMMARY .L;PG N 93773. 3 SH~~T 1 OF
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SUMMARY ,,,,00N 93773. 3 SM~~T 30F
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~~UMMARY 1'o~GI PAO::C~ ("tee ",.N
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ISUMMARY LOGHOLE N . DH-1l4PROJECT
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93731.086934.0PROJ E C TORILL DATES
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SUMMARY LOG 93731.0HOLE N . 86934.0
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SUMMARY I~OGN 95300.4SHEET 1 Of 7 j
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! SUMMARY.",OG N 95300.4 SH£~T1 Of
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SUMMARY LOG- N QC;1nn. 4HOLE NO. DH
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SUMMARY I~OG N Q'i1nO.4 SH£~T 7 OF
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APPENDIX BlHYDRAULIC DESIGN OF RECO
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PARAGRAPHC. Hydraulic Losses in Mac
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APPENDIX B1HYDRAULIC DESIGN OF RECO
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Various plates which appear in both
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C. Power Tunnel. The power tunnel i
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The primary and secondary rock trap
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G. Gate Structure Transition.(1) Si
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quantity of water in the gate struc
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will be approximately 12.5 ft and o
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Figure 7 in appendix B2 contains a
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accompaning cross-sectional areas o
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(3) Losses in Steel Penstock - Fric
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the type of pipe to be used at Crat
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unlined tunnel was 0.187 ft. Simila
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1.04 HYDRAULIC TRANSIENTSA. Operati
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Representat i ves of HEOB and OCE r
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nominal diameter and 27.9 percent f
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I. Computer Models.(1) Computer Pro
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increase the Polar Moment of Inerti
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"WHAMO" was used for the run and re
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surge tank (reject condition) is 10
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a surge tank approximately 350 ft h
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1.05 LAKE TAPA. Genera 1. The 1 ake
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Trashrack ConditionZero clogging25%
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plug, approximate sta 10+50 and at
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the blast pressure recorded at cell
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REFERENCES1. Mattimoc, J. J., Tinne
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APPENDIX B2SUPPORTING TECHNICAL DAT
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eUN.(Fl.). ,~f···~"'. '"".f1~~_.
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'.1":' ..."'..: ..:.........iI\~~fr
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COMP .~ > ,;--C H K 0 • ~,-,,,,-\
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C OMP. '3N3""CHKD. ___SUBJECTU.S. A
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COMP. ;IN:rCHKD. __ _SUBJECTC.IGA T
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CaMP. In::;:CHKD. ___ _SUBJECTU.S.
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JI~COMPoCHKD. ___SUB~IECTC I( A Te(
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·COMP. :1Nd~, U.S. ARMY ENGINEER D
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'COMPo )N"TCHKD. __ _SUBJECTU.S. AR
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COMPoC H KD.:r~:ru.s. ARMY ENGINEER
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(C OMP. :r IV 3'CHKD. J .,..1SUBJEC
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C OMP. ::r NS"CHKD.J 101SUBJECT3LiU
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46 13231~ t l TIr!!f I..I' ,;I ' 'j
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COM P. JIv J u . S. ARM YEN GIN E E
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COMP.lf!::C H K D •.::.YuleIDo/L.
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COMPo 0N"S'""CHKD •• J WJ"JU.S.
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U.S. ARMY ENGINEER DISTRICT, ALASKA
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COIo4P.CHKD.U.S. ARMY ENGINEER DIST
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COMPoCHKD.,r., '........,.~S U!:!..
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COMPo ;fA/if "CHKO.-r- u.s. ARMY EN
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COMP.CHkO.U.S. ARMY ENGINEER DISTRI
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COMP.CHKO.SUBJECTU.S. ARMY ENGINEER
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~~=::ySUBJECTU.S. ARMY ENGINEER DIS
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NPA FORM 16Ba (Rev.) Previous editi
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i•COMPo StJ\CHKD. JJSUBJECTZ/ 1?t
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COMPo ,)N)CHKD. 9"~SlIBJECTHU.S. AR
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NPA FORM 168a (Rev.) Previous editi
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"':'\.CO~P.~CHKD.~SUBJECTU.S. ARMY
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~( \lAL..\)~S iC.E\\\M\1'\) (.cc-0s
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-C OMP. \./ t..JCHJ(D._~_t~_"SUBJEC
Page 215 and 216: ___ .___._~ ..-=..........__ ._+-__
Page 217 and 218: ~UIII~::J•o•zo.,'"
Page 219 and 220: 604·· FIUC • e893 FINI65COf41)
Page 221 and 222: 1 CRATER lA
Page 223 and 224: lZ112Z DISPLAY ALL FINISHla3124 HIS
Page 225 and 226: S4· rRIC .01S0 FINI~5 COMO 10 C10e
Page 227 and 228: .DISCHRI2CE. CO£.FFICIGNT vs VALVE
Page 229 and 230: SA CPLUS .el C~1NUS .el rI~I65 CONO
Page 231 and 232: 1'~,~~TER LAKE. Sl'fETTISHM. HYDRAU
Page 233 and 234: ~!;:t:-~·.; ..'!;'~totoJ)l.14M PIa
Page 235 and 236: )0.40.5~IT' I" THiI "'lIee C .....
Page 237 and 238: sf· C· PLOTTIMG REQUESTS&a,1fLO.T
Page 239 and 240: ········· .. ·· .... ·
Page 241 and 242: .... D.~.~ T.altcTtOtt II TJl II'UI
Page 243 and 244: 'IIEL~CT'ltC6 ()veH .,}{)(L~ue TA ~
Page 245 and 246: \C'iCfilB1L L.A-1L-l:5'"GU3C-TelG "
Page 247 and 248: APPENDIX B3HYDRAULIC DESIGN OF ALTE
Page 249 and 250: The power tunne 1 entrance wi 11 be
Page 251 and 252: B. Losses in the Power Tunnel.(1) U
Page 253 and 254: 3.04 SURGE TANK.A. Operating Requir
Page 255 and 256: in the power conduit. Condition E i
Page 257 and 258: (2) Condition A - Maximum surge for
Page 259 and 260: I. Stability Routings.To de~onstrat
Page 261 and 262: 3.05 PRESSURE AND SPEED REGULATION.
Page 263 and 264: Maximum water hammer pressure gradi
Page 265: APPENDIX B4HYDRAULIC DESIGN OF ALTE
Page 269 and 270: 4.04 AIR CHAMBER SURGE TANK.A. Oper
Page 271 and 272: 12-ft diameter power tunnel with a
Page 273 and 274: Asc = Critical (horizontal) area of
Page 275 and 276: CRITICAL AIR VOLUMES BASED ON SVEE
Page 277 and 278: Since the air volume required in th
Page 279 and 280: The results of the rejection and de
Page 281 and 282: from these gauges will be converted
Page 283 and 284: Air 1 eakage through the rock is go
Page 285 and 286: needed for normal power production
Page 287 and 288: 4.06 PRESSURE AND SPEED REGULATIONA
Page 289 and 290: 4.07 INTERNAL CONDUIT PRESSURESA. G
Page 291 and 292: hammer values. Water ham~er and spe
Page 293 and 294: 16. U.S. Dept. of Interior, "Design
Page 295 and 296: 'I ,j:' 1 ! .~ .... ; : r :-:; I r
Page 297 and 298: 1. Jistances ~f j,10,~nrl l~ tt h~t
Page 299 and 300: TABLE IMAXIMUM PRESSURE ANDSPEED RI
Page 301 and 302: 17()D').~~-----; !CSURMSUR(Chaudhry
Page 303 and 304: 5 4 3 21 0occBB-----------Aa..::;VI
Page 305 and 306: 5I 4 I 32DESIGN SURGE TANK DIA. = 1
Page 307 and 308: D5 I4 I 3 2 1 1THIS TANK IS LESS TH
Page 309 and 310: 5 I4 I 3 2 11---_._---0CRATER LAKE#
Page 311 and 312: c---54 : 3 2 11D1. SEE PLATE B2 FOR
Page 313 and 314: 5 I 4 3 2 11----0 1. SEE PLATE B2 F
Page 315 and 316: 5 I4 [ 3 2 !1DEUtICRATER LAKE, SNET
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5 l41...j3 2,1r0--£tEV'"1U4S.113e.
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CORPS OF ENGINEERSU. S. ARMY1040 f-
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\ \ /A~1-- I.- -- QUIESCENT' 1 I514
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CORPS OF ENGINEERSU. S. ARMY~'" 00~
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5 4 I 3 I 2 1 II THS TANK IS STABLE
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-DC 9505 I 4 I 3 I 2 1I DESIGN TANK
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APPENDIX CPENSTOCK DESIGNC1C2ANALYS
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e cANALYSIS OF CONFINED PENSTOCKS.
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-Rcdr.op a vertical l:ine to the ab
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liner • Longitudinal members and.
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- ~",/APPENDIX C2STRESS ANALYSIS OF
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.' '", ,_" - _. ' •• :~"~';:',~
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'. ~~'. L1 zmuslbe'es//mCl-led.:" ~
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. ,c'R- II51-2 - 87"LlI -I- ~2 ,; O
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CONCRFTEDEFORMATION...--'Ir---Difre
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srra/n,- ....Bdt"sp/ac6'mel7tDC-r ,
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- . .
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7. E: ..':·"·tillTCES~ .Wa.ter Po
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