C05__Carr_Gov_t_Drawings__1-9.pdf

416-D-855

B r- 'f'

7a ,,---Test head r I

Locate coolinq water supply shutoff valve and thermometer to suit in field--, I I

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,I __ , T- I ,' I , , / ' I / , ( J'' Coolinq water inlet and fillinq connection for pressure test

A-A ll To bled d / ~-

SECTION

Transverse € unit---wee / ~ in field-----::__ ~

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Openinqs for checking ,/ level of rinq surface -------

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Install piezometer lines. ~:::~--- / See Dwg. No. 416-0-2025--------

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PLAN-SPIRAL CASING

-------Spiral casing

------}" Pipe connections for air vent while groutinq I ,,--Vertical 'ic

______ ," Air bleed

---;,-Pressure qages , I

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I _ __,, c:.:.::,..,,_ ,------Test head

-----4-2" Pipe connections for qroutinq

'-Bracket

€ Distributor-------rPositive type / relief valve I

3" Drain connection----------...

ELEVATION 8-8

Thermometer----, ' Pressure gage------- ;

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3" Cooling water outlet--,, • '

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Exhaust valve for _/ ,, requlating pressure----- ,,, Pressure gage---'

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-----!" Air bleed

------½llf--------+---+--

Positive type relief valve with capacity equal to supply and set to 735 p.s.i. for pressure test and 242 p. s.i. for placing concrete - -- - -- --------------------

3" Drain connection-------------- ELEVATION C-C

RASTER IMAGE FILE

PROCEDURE NOTES

See completion specifications for division of work between turbine and completion contractors.

1. Erect the elbow section of the draft tube liner on the supports 8. Erect pit liner in place. Reset or replace the relief valve for pressure and jacks and make bolted connections at field joints. Aline to relief at 242 psi. Brinq hydrostatic pressure within casinq to elevation and centerline position and secure liner in place by normal operating pressure of 230 psi. Check olinement and means of the holddown rods and pipe jacks. Weld the field joints complete riveted and field welded joints in upper draft tube liner section.

and check olinement. 9. While maintaining 230 psi pressure within casing, weld loop

2. Place second staqe concrete embeddinq the liner to elevation ends of tie rods and pre-stress all tie rods. Care should be taken

1181.75. Spray inner surface of liner with cooling water during in pre-stressing rods to prevent movement of turbine casinq.

placing and initial setting of concrete. 10. Make final alinement check, weld jack supports in place and place

3. Place second stage concrete to elevation 1187.00 instol/inq all second stage concrete to El. 1204.25 as continuously as feasible .

anchors for the slay ring and spiral cosinq. During concretinq operations and for a perjod of not less than

4. Assemble the upper section of the draft tube liner, spiral casing 7 days after the concrete has been placed, maintain a pressure of and stay ring sections, and the inlet section in position. Place 230 psi in the casinq. Throuqhout this entire period, circulate o and pre-stress flange bolts in accordance with turbine sufficient quantify of coolinq wafer throuqh the casing to manufacturer's instructions. Adjust jacks, tie rods and pipe maintain the temperature of the casinq metal within 5° F above jocks to a line and level complete assembly. that determined at the beq,nning of concreting operations, and

5. After installation of all items to be embedded in the concrete spray the inside of the draft tube and pit liners during initial surroundinq the turbine such as drains, piezometer lines, etc., setting of the concrete.

install the test rinq with ifs gaskets, and spider support, and in 11. After the concrete has set, and before releasinq pressure in casing, the case of Unit 2 the test head also. Install the necessary grout the pockets under the stay rinq and in the d['aft tube liner qrout piping with air vents, and pressure water coolinq systems usinq a maximum grouting pressure of 10 psi.

for use 111 testing and embeddinq the spiral case. 12. Reduce pressure and unwater the spiral casinq. Remove test h,ead

6. Test the assembled casing under hydrostatic pressure of 700 psi and test ring. Plug qrout and vent ho/es in stay ring and and maintain this pressure for at least 2 hours. Check the complete draft tube liner.

casinq for water- tiqhtness. lf feasible, water supplied to the casmq /3. Final machine seats for the stationary wearing rings.

durinq hydrostatic tests and embedment of turbine parts shall 14. After erection is complete, clean and paint all water possoqes hove a minimum temperature of 60° F, but in no case shall the and embedded ports as specified in the installation specifications.

pressure be applied until the wa.ter and turbine cosmg are approximately the some temperature. Recheck alinement and level of the complete assembly while cosing is under pressure.

7. Test pressures shall be applied slowly and under proper control so that at no time will the maximum test pressure be exceeded by an amount greater than 5 percent.

REFERENCE DRAWINGS

DENVER OFFICE DRAWINGS

TURBINES ANO AUXILIARIES

HYDRAULIC TURBINES ASSEMBLY ______________________ 4/6 -D-

EMBEDOEO ANCHORS AND JACKS FOR TURBINE

ERECTION- DRAFT TUBE LINER ___________________ 4/6-D-853

EMBEODEO ANCHORS AND JACKS

FOR TURBINE ERECTION-SPIRAL

CASING AND STAY RING ___________________________ 4/6 -0-854

UNITED STATES

DEPARTMENT OF THE INTERIOR

BUREAU OF RECLAMATION

CENTRAL VALLEY PROJECT

TRINITY RIVER DIVISION- CALIFORNIA

CLEAR CREEK POWER PLANT

TURBINES AND AUXILIARIES

PROCEDURE FOR ERECTING AND EMBEDDING TURBINES

DENVER, COLORADO, JUNE 20,1961 416-0-855