1 - Alaska Energy Data Inventory

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Where:Q = Flow of air at atmospheric pressure (ft 3 /min)K = Permeability coefficient (ft/min)A = Air surface area of tank interior (ft2)H l= Tank internal air pressure (gage - ft of water)H 2= External groundwater head (gage - ft of water)L = Linear distance from tank interior to face of mountain (ft).,Air leakage, adjusted to a gage pressure of 850 ft of water, was calculatedto be 3,895 ft 3 /mo.The Jukla tank, having a total volume of 219,000 ft 3 , was found toleak no air when the internal air pressure was below the externalgroundwater pressure of 558 ft of water, and 1 eaked between 20 and 200normal litres (at atmospheric pressure) per minute when the internal airpressure exceeded 558 ft of water.Assuming that air leakage is directlyproportional to total tank volume, and using the maximum air leakage rateof 200 normal litres per minute from Jukla, the Crater Lake tank with avolume of 65,508 ft 3 would leak air at 3,509 ft 3 /mo when adjusted to agage pressure of 850 ft of water. The largest anticipated tank of88,628 ft 3 , corresponding to the 12.2 ft diameter power tunnel, wouldleak at 4,747 ft 3 /mo on this same basis.The air chamber at the Driva project, which operates with 177,000 ft3of air and is excavated from very sound rock with over 3,000 ft of rockoverburden, showed no air 1 eak age dur -j ng air and water pressure tests andno leakage during its first two years of operation. The compressors hadnot been used except to fill the tank initially.Regarding possible air loss through entrapment in the air chamberwater, studies have been performed at the Jukla project which give anindication of possible air loss. Although laboratory studies prior toconstruction at Jukla indicated that air could be lost at a rate of0.6 ft 3 up to 1.6 ft 3 of air per thousand ft 3 of the water volumeB4-20
needed for normal power production (air at atmospheric pressure, using veryconservative assumptions), virtually no air was lost through entrapmentduring plant operation. The lab study did find. that air loss was decreasedas drift tunnel length was increased. They recommend a drift tunnel lengthat least 5 to 6 times the diameter of the drift tunnel. The Crater Lakedrift tunnel substantially exceeds this length requirement.In conclusion, it is estimated that total monthly air leakage from theproposed air chamber wi 11 be approximately 5,000 ft 3 at a gage pressureof 850 ft.B4-21
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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
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___ .___._~ ..-=..........__ ._+-__
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~UIII~::J•o•zo.,'"
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604·· FIUC • e893 FINI65COf41)
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1 CRATER lA
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lZ112Z DISPLAY ALL FINISHla3124 HIS
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S4· rRIC .01S0 FINI~5 COMO 10 C10e
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.DISCHRI2CE. CO£.FFICIGNT vs VALVE
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SA CPLUS .el C~1NUS .el rI~I65 CONO
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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 and 266: APPENDIX B4HYDRAULIC DESIGN OF ALTE
Page 267 and 268: 4.02 DESCRIPTION OF THE POWER CONDU
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: Air 1 eakage through the rock is go
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
Page 317 and 318: 5 l41...j3 2,1r0--£tEV'"1U4S.113e.
Page 319 and 320: CORPS OF ENGINEERSU. S. ARMY1040 f-
Page 321 and 322: \ \ /A~1-- I.- -- QUIESCENT' 1 I514
Page 323 and 324: CORPS OF ENGINEERSU. S. ARMY~'" 00~
Page 325 and 326: 5 4 I 3 I 2 1 II THS TANK IS STABLE
Page 327 and 328: -DC 9505 I 4 I 3 I 2 1I DESIGN TANK
Page 329 and 330: APPENDIX CPENSTOCK DESIGNC1C2ANALYS
Page 331 and 332: e cANALYSIS OF CONFINED PENSTOCKS.
Page 333 and 334: -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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1 - Alaska Energy Data Inventory

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