JA-5_Appx_4_Tab_09 _Packing _Seals _Air_Ejection_ _Gland_Seal_Cond.pdf

TETRAD Services Inc. 960 Diamond Ave Red Bluff CA. 96080

SHAFT & DIAPHRAGM PACKING

The shaft labyrinth packing radial clearance was taken and recorded on form St1-0302 and can be found latter in this tab. The carbon packing was removed and sent out to have new manufactured. The labyrinth packing was removed and inspected for rubs. The findings can be found on form St1-0317, upper and lower in this tab. The packing was found to be in satisfactory condition with only light to very light rubs in most spots and moderate in a few. The packing was sent out to have new manufactured.

The new carbon rings were measured and recorded on form St1-316 latter in this report. The new packing was installed and the final readings recorded on form St1-0302 found latter in this report.

The air ejector was disassembled, cleaned and inspected. The primary nozzles were measured and recorded. The primary sizes are 0.112” and 0.115”, the secondary are 0.104” and 0.104” as found. The traps were removed, cleaned and inspected. The linkages were found to be in satisfactory condition. The floats were leak checked and found to be leak free. The traps were assembled and returned to service. The condensers were disassembled, cleaned and inspected. The tubes were cleaned using a Good Way tube cleaner. The tubes were vacuumed tested and found to be good with no leaks found. The hog ejector was removed and replaced with a new one.

The gland seal condenser was opened and inspected. The water dividers in the heads were found to have heavy erosion that needs repair. The tubes were found to be dirty with heavy amounts of mud and foreign debris. The tubes were cleaned and pressure tested with no leaks found. A hydro test was performed to insure the tube sheets were not leaking around the tubes. The dividers in the heads were weld repaired prior to assembly. After the head repairs, the gland seal condenser was found to be in satisfactory condition and returned to service.

Tetrad Packing Clearances & Services Inc. Wear Measurement Instructions

Packing: Measuring Instructions and Notes

Notes For Checking Packing Clearances 1 Each ring must always be held against the steam seal side of the neck of the packing ring

HT

1. Each ring must always be held against the steam seal side of the neck of the packing ring when checking clearances. The packing assembly drawings should be checked to be certain which side of the packing is the steam seal side.

2. Rotor must be blocked away from the generator as far as thrust allows when checking clearances.

3. The "X" clearance is always on the side of the packing long tooth toward the turbine end of the turbine and "Y" is the clearance on the side of the packing long tooth toward the generator. The clearance is the minumum distance at the point measured.

4. The packing assemblies are numbered starting from the turbine end of the machine and working toward the generator. The packing rings in one assembly are also numbered from the turbine end of the assembly working toward the generator. When recording measurements for steam packing, fill in packing and ring column with packing assembly number first, followed by a dash, then the ring number. In this instance the diaphragm stage columns will be left blank. When recording measurements for diaphragm packing, the packing and ring number column will be left blank.

Notes For Checking Packing Wear

1. Radial packing clearances and tooth height measurements are to be taken and recorded, .

2. Prior to packing segment removal, measure and record the radial clearance, left and right sides, between packing ring and rotor at points 1 and 5 (Fig. 4). The radial clearance should be taken on a short tooth.

3. After ring segment removal, measure and record the tooth height (Figs. 1 and 2) on an 8-point check (Fig. 4). Each segment must be measured at some point on the segment so that the points are equally spaced as shown in Fig. 4.

4. The height measurement can be made to either long or short tooth, whichever comes first from side of segment. Slant tooth and in-line straight tooth rings can be measured in the same manner (Fig. 3).

ST1-301 Page

ST1-301.XLS

TETRAD Packing Clearances & Services Inc. Wear Measurements Date: Turbine Serial No. Prepared by Chris Coy

Data Turbine Section (As Found/Final)

Ring/ Axial Radial Packing Ring Segments Height (Ht) (Mils) Stage Fig. (Mils) Left Top Right Bottom Left No. No. X Y Left Right 1 2 3 4 5 6 7 8 9 10 11 12 1 9 34 669 669 676 675 677 682 661 670 675 2 20 13 677 674 678 678 678 682 680 676 672 3 23 22 680 673 678 682 677 684 679 679 674 4 23 17 690 687 677 674 680 689 676 683 675 5 19 20 685 677 674 677 678 684 675 676 673 6 16 13 677 676 680 680 678 676 675 670 674 7 30 9 684 680 678 677 678 682 674 671 669 8 19 14 680 678 667 667 673 680 674 669 673 9 31 12 621 607 609 609 610 613 593 659 670 10 25 21 615 608 612 612 607 614 599 604 606 11 19 25 610 612 605 608 601 610 609 609 610

174144/12/2011 as found

Ring/ Height (Ht) Packing Ring Segments Wear (Ht-Ht max) (Mils) Stage (Mils) Left Top Right Bottom Left

No. Max Min Diff Avg 1 2 3 4 5 6 7 8 9 10 11 12 1 682 661 21 -9 -13 -13 -6 -7 -5 0 -21 -12 -7 2 682 672 10 -5 -5 -8 -4 -4 -4 0 -2 -6 -10 3 684 673 11 -6 -4 -11 -6 -2 -7 0 -5 -5 -10 4 690 674 16 -9 0 -3 -13 -16 -10 -1 -14 -7 -15 5 685 673 12 -7 0 -8 -11 -8 -7 -1 -10 -9 -12 6 680 670 10 -4 -3 -4 0 0 -2 -4 -5 -10 -6 7 684 669 15 -7 0 -4 -6 -7 -6 -2 -10 -13 -15 8 680 667 13 -7 0 -2 -13 -13 -7 0 -6 -11 -7 9 670 593 77 -49 -49 -63 -61 -61 -60 -57 -77 -11 0 10 615 599 16 -6 0 -7 -3 -3 -8 -1 -16 -11 -9 11 612 601 11 -4 -2 0 -7 -4 -11 -2 -3 -3 -2

Median Segment Wear -2 -7 -6 -7 -7 -1 -10 -10 -9

ST1-302 Page 1

ST1-302.XLS

Tetrad Packing Clearances Services Inc. & Wear Measurements

Date: Turbine Serial No. Prepared by Chris Coy

Data as found Turbine Section (As Found/Final)

Out of Tolerance =

Axial Clearances (Mils) Radial Clearances (Mils) Ring/ Tolerances X&Y (+/-) 30 Tolerances + 10 - 5 Stage Fig. Expected Actual Difference Tolerance Actual Difference Tolerance No. No. X Y X Y X Y X Y Exp Left Right Dif Left Right Left Right

1 9 34 -25 2 20 13 7 3 23 22 1 4 23 17 6 5 19 20 -1 6 16 13 3 7 30 9 21

17414

8 19 14 5 9 31 12 19

10 25 21 4 11 19 25 -6

Median Median Average Average

Comments:

ST1-302 Page 2

TETRAD Packing Clearances & Services Inc. Wear Measurements Date: Turbine Serial No. Prepared by Chris Coy

Data Turbine Section (As Found/Final)

Ring/ Axial Radial Packing Ring Segments Height (Ht) (Mils) Stage Fig. (Mils) Left Top Right Bottom Left No. No. X Y Left Right 1 2 3 4 5 6 7 8 9 10 11 12 1 9 12 673 2 17 19 672 3 17 19 672 4 19 15 672 5 19 15 671 6 22 20 672 7 22 14 671 8 24 10 671 9 20 15 607 10 14 19 608 11 20 16 608

174145/24/2011

FINAL

Ring/ Height (Ht) Packing Ring Segments Wear (Ht-Ht max) (Mils) Stage (Mils) Left Top Right Bottom Left

No. Max Min Diff Avg 1 2 3 4 5 6 7 8 9 10 11 12 1 673 673 0 0 0 2 672 672 0 0 0 3 672 672 0 0 0 4 672 672 0 0 0 5 671 671 0 0 0 6 672 672 0 0 0 7 671 671 0 0 0 8 671 671 0 0 0 9 607 607 0 0 0 10 608 608 0 0 0 11 608 608 0 0 0

Median Segment Wear

ST1-302 Page 1

Tetrad Packing Clearances Services Inc. & Wear Measurements

Date: Turbine Serial No. Prepared by Chris Coy

Data FINAL Turbine Section (As Found/Final)

Out of Tolerance =

Axial Clearances (Mils) Radial Clearances (Mils) Ring/ Tolerances X&Y (+/-) 30 Tolerances + 10 - 5 Stage Fig. Expected Actual Difference Tolerance Actual Difference Tolerance No. No. X Y X Y X Y X Y Exp Left Right Dif Left Right Left Right

1 9 12 -3 2 17 19 -2 3 17 19 -2 4 19 15 4 5 19 15 4 6 22 20 2 7 22 14 8

17414

8 24 10 14 9 20 15 5

10 14 19 -5 11 20 16 4

Median Median Average Average

Comments:

ST1-302 Page 2

TETRAD Packing Services Inc. Lower Packing Rubs

Date(m/d/y) 4/13/2011 Turbine Serial No. Prepared by

CODE:

BROKEN RUBS

RING # SPRINGS RIGHT

2 NA M

3 NA L

4 NA L

5 NA VL

6 NA L

7 NA L

8 NA VL

9 NA L

10 NA M

11 NA VL

12 NA VL

L

VL

VL

M M L L

S S

VL

L L

VL

VL

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE MH

VL RS

NONE

L

VL

VL

LM

LM

AXIAL LEFT CENTER

NONE VL M

17414 Chris Coy

RUBS RUBS RUBS

Sharp = S, Very Light = VL, Light = L, Moderate = M, Moderate Heavy = MH, Heavy = H

ST1-318 Page

TETRAD Packing Services Inc. Upper Packing Rubs

Date(m/d/y) 4/13/2011 Turbine Serial No. Prepared by

CODE:

BROKEN RUBS

RING # SPRINGS RIGHT

1 NA S

2 NA VL

3 NA S

4 NA VL

5 NA S

6 NA L

7 NA S

8 NA VL

9 NA M

10 NA VL

11 NA S

L

VL

L M L

VL

VLS

S L S

VL

S

VL

S

S S S S S S

S L S S

LEFT

VL

S

L M

AXIAL LEFT CENTER

S M L

17414 Chris Coy

RUBS RUBS RUBS

Sharp = S, Very Light = VL, Light = L, Moderate = M, Moderate Heavy = MH, Heavy = H

ST1-317 Page

TETRAD Services Inc. Packing, Carbon Rings

Date Jun 12, 11 Turbine Serial No. Prepared by Chris Coy

Data Final Turbine Type condensing (as found/final) (Condensing / Noncondensing)

INSPECTIONS & CHECKS CODE

Ring Inspection X Orientation Check X Work Carried Out Spring Inspection X Assembly Check N Not Done Journal Inspection X Clearance Check NA Not Applicable Steam Face Inspection X C See Comments

V Visual Inspection MP Mag. Particle UT Ultrasonic PT Penetrant

17414

Packing Ring 1 2 3 4 5 6 7 8 Steam Face (In or out) in out in in out in Packing ID 8.524 8.524 8.524 8.524 8.524 8.524 Shaft OD 8.498 8.498 8.499 8.499 8.499 8.499 Actual Clearance 0.026 0.026 0.025 0.025 0.025 0.025 Expected Clearance Difference

Comments

ST1-316 Page

ST1-316.XLS