A.03PropellerConditionFoundReport.pdf

CONDITION FOUND REPORT

MAY26, 2020

EQUIPMENT DATA:

TWO CPP SYSTEMS ONE RIGHT HAND ROTATING, ONE LEFT HAND ROTATING

NO. BLADES - FOUR (4) EACH PROPELLER.

PORT BLADE SET

PORT BLADE #1

70H402

333 LBS

A (MALTESE CROSS) B CP1829777 05/10

271109 UNREADABLE

A (MALTESE CROSS) B AU 1779283

EVENLY WORN AWAY SURFACE WITH BLADE THICKNESS AND WIDTH REDUCED BY WEAR MAINLY AT THE LEADING EDGE. NO BENDS OF BLADE TRAIL OR LEAD EDGES. HEAVY POROSITY MAINLY IN MIDDLE OF THE BLADE, ON BOTH

PRESSURE AND SUCTION SIDE APPROXIMATELY 12"X6" AREA FROM TIP DOWN TO 8R.

PORT BLADE #2

70H402

A (MALTESE CROSS) B CP1829777 05/10

332 LBS

A (MALTESE CROSS) B AU1779283

EVENLY WORN AWAY SURFACE WITH BLADE THICKNESS AND WIDTH REDUCED BY WEAR MAINLY AT THE LEADING EDGE. NO BENDS OF BLADE TRAIL OR LEAD EDGES. HEAVY POROSITY MAINLY IN MIDDLE OF THE BLADE, ON BOTH PRESSURE AND SUCTION SIDE. SUCTION SIDE CONDENSED POROSITY AREA APPROXIMATELY 20"X4" FROM TIP DOWN.

PRESSURE FACE CONDENSED POROSITY AREA APPROXIMATELY 16"X4".

PORT BLADE #3

70H402

A (MALTESE CROSS) B CP1829777 05/10

271109 ----- 824

A (MALTESE CROSS) B AU1779283

EVENLY WORN AWAY SURFACE WITH BLADE THICKNESS AND WIDTH REDUCED BY WEAR MAINLY AT THE LEADING EDGE. NO BENDS OF BLADE TRAIL OR LEAD EDGES. HEAVY POROSITY MAINLY IN MIDDLE OF THE BLADE, ON BOTH

PRESSURE AND SUCTION SIDE APPROXIMATELY 12"X6" AREA FROM TIP DOWN TO 8R.

PORT BLADE #4

70H402

332 LBS

A (MALTESE CROSS) B CP1829777 05/10

271109 ----- 824

A (MALTESE CROSS) B AU1779283

EVENLY WORN AWAY SURFACE WITH BLADE THICKNESS AND WIDTH REDUCED BY WEAR MAINLY AT THE LEADING EDGE. BLADE #4 SUCTION SIDE HAS 20"X4" CONDENCED POROSITY FROM TIP DOWN TO PALM. PRESSURE FACE CONDENSED POROSITY AREA l0"X5". NO BENDS OF BLADE TRAIL OR LEAD EDGES.

STARBOARD BLADE SET

STARBOARD BLADE #1

70V401

332 LBS

120110 UNREADABLE

A (MALTESE CROSS) B AU1779283

A (MALTESE CROSS) B CP1829777 05/10

EVENLY WORN AWAY SURFACE WITH BLADE THICKNESS AND WIDTH REDUCED BY WEAR MAINLY AT THE LEADING EDGE. NO BENDS OF BLADE TRAIL OR LEAD EDGES. SUCTION SIDE HAS CONDENCED POROSITY IN AN AREA APPROXIMATELY 12"X3" FROM 9R STARTING FROM TRAIL EDGE RUNNING DOWN TOWARD PALM. PRESSURE FACE SIDE HAS CONDENSED POROSITY IN AN AREA OF 8"X3" WITH A 1/2" CRACK AT THE 9R. ON THE TRAIL EDGE.

STARBOARD BLADE #2

332 LBS

120110 UNREADABLE

A (MALTESE CROSS) B CP1829777 05/10

EDGE. NO BENDS OF BLADE TRAIL OR LEAD EDGES. SUCTION SIDE HAS CONDENCED POROSITY FROM TIP DOWN TOWARD PALM IN AN AREA OF20"X4" AS WELL AS A 3"X4" AREA OF CONDENSED POROSITY AT THE 9R NEAR THE LEAD EDGE. PRESSURE FACE SIDE HAS A 16"X2" AREA OF POROSITY FROM THE TIP TOWARD THE PALM. LEAD EDGE AT THE 9R, HAS A FEW EXTRA DEEP POROSITY HOLES AS DETERMINED BY THE DYE PENETRANT READINGS.

STARBOARD BLADE #3

333 LBS

120110 UNREADABLE

EDGE. NO BENDS OF BLADE TRAIL OR LEAD EDGES. SUCTION SIDE HAS CONDENSED DEEP POROSITY IN AN AREA OF 24"X4". SOME SCATTERED IN THE MIDDLE OF THE BLADE 8"X4". PRESSURE FACE SIDE HAS AN AREA OF POROSITY NEAR THE TRAIL EDGE APPROXIMATELY 12"X4" FROM THE TIP DOWN. NEAR THE LEADING EDGE AT THE TIP, THERE ARE TWO

AREAS OF CONCERN APPROXIMATELY 1"X2" EACH AND APPROXIMATELY ¼" DEEP.

STARBOARD BLADE #4

333 LBS

120110 UNREADABLE

EDGE. NO BENDS OF BLADE TRAIL OR LEAD EDGES.

SUCTION SIDE HAS CONDENSED POROSITY IN THE MIDDLE OF THE BLADE IN AN AREA OF APPROXIMATELY 20"X6".

PRESSURE FACE SIDE HAS CONDENSED POROSITY AT THE TIP IN AN AREA OF 1"X2" APPROXIMATELY ¼" DEEP AS WELL

AS AN AREA OF 4"X3" AT THE 9R OF THE LEADING EDGE.

NDT REPORT

NDT TESTING RESULTS PORT SET

AN NDT-LIQUID DYE PENETRANT TEST WAS PERFORMED ON THE PORT SET OF BLADES. THE AREAS AGREED TO BE TESTED WERE THE ENTIRE BLADE SURFACES, PALMS, AND BOLT HOLES. THIS TEST REVEALED THE FOLLOWING RESULTS;

NO CRACKS OR LINEARS, HOWEVER, THERE ARE NOTED AREAS OF POROSITY ON THE BLADES THAT ARE OF CONCERN.

THERE WAS VERY MINOR POROSITY IN THE PALMS AND BOLT HOLE AREAS.

NDT TESTING RESULTS STARBOARD SET

AN NDT-LIQUID DYE PENETRANT TEST WAS PERFORMED ON THE STARBOARD SET OF BLADES. THE AREAS AGREED TO BE TESTED WERE THE ENTIRE BLADE SURFACES, PALMS, AND BOLT HOLES. THIS TEST REVEALED THE FOLLOWING RESULTS; ON STARBOARD BLADE #1, THERE IS A CRACK APPROXIMATELY 1/2" IN SIZE AT THE 9R. ON THE TRAILING EDGE WHICH GOES THROUGH TO BOTH SIDES. BLADES #2, 3 AND 4 HAVE NO CRACKS OR LINEARS, HOWEVER, THERE ARE NOTED AREAS OF POROSITY THAT ARE OF CONCERN. THERE WAS VERY MINOR POROSITY IN THE PALMS AND

BOLTHOLE AREAS..

NDT REPORT CONTINUED...

ACCOMPLISHED USING VISABLE DYE PENETRANT WITH SOLVENT REMOVAL IN ACCORDANCE WITH A

PROCEDURE THAT MEETS THE REQUIREMENTS OF ASTM E-165 TYPE II, METHOD C.

TEST PROCEDURE NUMBER: TIP-PT-100.0 REVISION: 000

DATE OF APPLICATION/INSPECTION: MAY 1, 2020 STARBOARD SIDE, MAY 11, 2020 PORT SIDE.

MATERIALS USED:

DYNAFLUX/SPOT CHECK PENETRANT: 19 227B

DYNA FLUX/SPOT CHECK DEVELOPER: 14154E

DYNA FLUX/SPOT CHECK CLEANER: 19092

LIGHTING EQUIPMENT USED: FLASHLIGHT

AREAS AGREED TO BE TESTED ARE AS FOLLOWS;

l) ENTIRE BLADE SURFACE OF·ALL8 BLADES, PALMS AND BOLT HOLES

RECOMMENDATIONS: REPAIR ALL 8 BLADES BACK TO MFG SPECIFICATIONS. THIS CONSISTS OF WELDING BLADES BACK TO ORIGINAL DESIGN M EASUREMENTS, USING LIKE MATERIAL AS WELL AS REPAIRING THE 1/2" CRACK ON

STARBOARD SIDE BLADE #1. WE DO NOT RECOMMEND REPAIRING ANY OF THE POROSITY.

IT IS ALSO OUR RECOMMENDATION TO MACHINE THE SEAL SURFACES ON ALL 8 BLADES.

OTHER INFORMATION

THIS CONDITION FOUND AND NDT REPORT DOES NOT PRECLUDE THE POSSIBILITY THAT THERE MAY BE UNDETECTED FLAWS IN THE BLADES WHICH MIGHT BE REVEALED BY OTHER TESTING M ETHOD.

STARBOARD SIDE

MEASURED BLADE WIDTHS

PORT SIDE

MEASURED BLADE WIDTHS

BL#1 BL#2 BL#3 BL#4 BL#1 BL#2 BL#3 BL#4

9R 30 3/8 29 7/8 29 7/8 30 3/8 9R 30 30 30 30 1/8

8R 31 5/8 31 1/2 31 1/2 31 5/8 8R 31 1/8 31 1/4 31 1/4 31 1/8

7R 29 3/8 29 3/8 29 3/8 29 1/4 7R 28 3/4 28 3/4 28 3/4 28 1/4

6R 26 1/8 26 1/8 26 1/4 26 1/8 6R 25 5/8 25 1/2 25 5/8 25 5/8

5R 22 1/4 22 1/2 22 1/2 22 3/8 5R 21 7/8 21 7/8 21 7/8 21 7/8

PORT AND STARBOARD

MANUFACTURER BLADE WIDTHS

9R 31 1/4

8R 32 3/16

7R 31

6R 26 1/4

5R 22 7/16

BOLT HOLE MEASUREMENT DATA DREDGE YAQUINA

STARBOARD BLADE #1 STARBOARD BLADE #2 STARBOARD BLADE #3 STARBOARD BLADE #4

COUNTER BORE .235 COUNTER BORE .235 COUNTER BORE .235 COUNTER BORE .235

1 1.154 1.156 1 1.159 1.160 1 1.166 1.166 1 1.164 1.166 2 1.154 1.156 2 1.161 1.160 2 1.165 1.164 2 1.165 1.167 3 1.164 1.165 3 1.162 1.162 3 1.171 1.171 3 1.168 1.169 4 1.165 1.165 4 1.163 1.165 4 1.173 1.174 4 1.162 1.164 5 1.160 1.157 5 1.160 1.156 5 1.168 1.169 5 1.166 1.164 6 1.159 1.155 6 1.159 1.158 6 1.165 1.162 6 1.164 1.167 7 1.157 1.156 7 1.155 1.152 7 1.163 1.165 7 1.158 1.156 8 1.155 1.152 8 1.152 1.149 8 1.163 1.160 8 1.163 1.164

PORT BLADE #1 PORT BLADE #2 PORT BLADE #3 PORT BLADE #4

COUNTER BORE .235 COUNTER BORE .235 COUNTER BORE .235 COUNTER BORE .235

1 1.159 1.160 1 1.146 1.144 1 1.167 1.166 1 1.140 1.141 2 1.160 1.159 2 1.147 1.145 2 1.166 1.165 2 1.140 1.140 3 1.162 1.163 3 1.145 1.144 3 1.163 1.164 3 1.138 1.139 4 1.160 1.162 4 1.141 1.142 4 1.160 1.160 4 1.138 1.139 5 1.151 1.148 5 1.140 1.136 5 1.156 1.151 5 1.138 1.136 6 1.146 1.147 6 1.137 1.134 6 1.155 1.152 6 1.135 1.134 7 1.149 1.144 7 1.138 1.136 7 1.155 1.152 7 1.138 1.135 8 1.153 1.151 8 1.141 1.139 8 1.159 1.154 8 1.140 1.136