Group 12 and 13_87 Propeller Inspection Compliance Forms (FINAL R1).pdf

87 Propeller Inspection Compliance Forms

Initial Inspection/Test: Final Inspection/Test:

Propeller serial no: Date:

Contractor inspector name/title:

1. Material Composition (per ABS 7, Section 10, Type 4)

This section is not applicable to overhaul and repair.

2. Bolt Hole Inspections – NOTE: Using a go/no-go gauge, this inspection is a decision point. If either is

UNSAT or requires weld repair, immediately notify the KO.

Threads fully engage? (check one below):

Hole 1 GO NO-GO

Hole 2 GO NO-GO

Hole 3 GO NO-GO

Lifting hole threads fully engaged: GO NO-GO

Contractor inspector (written/signature): /

USCG (written/signature): /

3. Hub Bore Inspection - NOTE: The bore dimensional inspection is a decision point. Report any failed measurement to the KO immediately upon finding.

Inspection Requirement Measured Pass/Fail

Bore dimensional inspection (for comparison to Coast

Guard Drawing 87 WPB

245-003)

Large end dia: 4.000”

+2%, -1.5%

Small end dia.: 3.250”

+2%, -1.5%

Hub length: 12.000”

+2%, -1.5%

Keyway width: 1.000”, +1/8”, -1/16”

Keyway depth: 0.250”, +/-2%

Large end dia:

Small end dia.:

Hub length:

Keyway width:

Keyway depth:

4. Surface Finish

Locations Required Measured

Blade 1 from radius 0.2 outward

63 micro inches Ra

Blade 2 from radius 0.2 outward

Blade 3 from radius 0.2 outward

Blade 4 from radius 0.2 outward

Blade 5 from radius 0.2 outward

Hub forward end 125 micro inches Ra

Hub aft end

Bore/Keyway 63 micro inches Ra

5. Balancing

Requirement Measured

Mandrel/concentric ring TIR <0.001”

RPMs 853

Propeller weight Estimated ~337 lbs

Residual unbalance*** Max: 5.9 oz-in

Contractor inspector (written/signature): /

USCG (written/signature): /

***Residual unbalance determined via U = 6GW/N, where G = 2.5 mm/s, W = 337 lbs and N = 853 RPMs

(Source: MIL-STD-167-1A, paragraph 5.2.2.2).

6. Surface Inspection

Document ALL defects on the following sheets. For the dye penetrant inspection, highlight/annotate ALL defects that fall outside of the allowable parameters set by ABS Part 7, Section 10, Table 1. Provide two sheets, one per face and label pages 5a and 5b.

NOTE: Photographs may be inserted in place of these inspection forms provided the photos collectively encompass the entire propeller and adhere to the instructions for documenting/highlighting/annotating defects. The photographs must be labeled such that the blades, hub locations and defect locations are identifiable. See the following page for the hub diagram.

Pressure Face Suction Face

Propeller Hub – Sketch and label the adjacent blades in the above diagram.

NOTE: Photographs may be inserted in place of these inspection forms provided the photos collectively encompass the entire hub and adhere to the instructions for documenting/highlighting/annotating defects.

The photographs must be labeled such that the blades, hub locations and defect locations are identifiable.

7. Inspection Report Data

a. Propeller Blade Radii

Location Required Measured

Blade 1

40.94” +/- .08” (40.86” to 41.02”)

Blade 2

Blade 3

Blade 4

Blade 5

b. Local Pitches (measured over three equal segments with a 0.50” exclusion from each edge, i.e., chord length minus 1.0” total divided by 3) with +/- 2.0% pitch tolerance (min – max) applied to the requirement.

Blade 1 TE LE Radius Segment 1 requirement

Segment 1 measured

Segment 2 requirement

Segment 2 measured

Segment 3 requirement

Segment 3 measured

.4R 48.40” (47.73” – 49.36”)

49.59”

(48.60” – 50.59”)

52.51” (51.46” – 53.56”)

.5R 52.39” (51.34” – 53.43”)

50.48”

(49.47” – 51.49”)

51.05” (50.03” – 52.07”)

.6R 53.16” (52.10” – 54.23”)

50.44”

(49.44” – 51.45”)

49.90” (48.90” – 50.90”)

.7R 53.75” (52.67” – 54.82”)

49.60”

47.13” (46.19” – 48.07”)

.8R 53.37” (52.30” – 54.44”)

47.59”

(46.64” – 48.54”)

44.87” (43.97” – 45.76”)

.9R 51.81” (50.78” – 52.85”)

44.06”

(43.18” – 44.95”)

40.59” (39.78” – 41.40”)

.95R 49.84” (48.84” – 50.84”)

41.30”

(40.47” – 42.12”)

38.97” (38.19” – 39.75”) requirement

Segment 1 measured

Segment 2 requirement

Segment 2 measured

Segment 3 requirement

Segment 3 measured requirement

Segment 1 measured

Segment 2 requirement

Segment 2 measured

Segment 3 requirement

Segment 3 measured requirement

Segment 1 measured

Segment 2 requirement

Segment 2 measured

Segment 3 requirement

Segment 3 measured requirement

Segment 1 measured

Segment 2 requirement

Segment 2 measured

Segment 3 requirement

Segment 3 measured

c. Section Pitch

d. Mean Pitch per Blade

Requirement Blade 1 Blade 2 Blade 3 Blade 4 Blade 5

48.79”

+/- 0.49” (48.30” – 49.28”)

e. Mean Propeller Pitch

Requirement Measured

48.78”

+/- 0.49” (48.30” – 49.28”)

Radius Requirement Measured

Blade 1 Blade 2 Blade 3 Blade 4 Blade 5

.4R 50.507” (49.497” – 51.517”)

.5R 50.999” (49.979” – 52.019”)

.6R 50.757” (49.742” – 51.772”)

.7R 50.180” (49.176” – 51.184”)

.8R 48.921” (47.943” – 49.899”)

.9R 46.031” (45.110” – 46.952”)

.95R 44.119” (43.237” – 45.001”)

f. Blade Section Widths

Blade 1

Radius Requirement, full width

Full width, measured

.5R 17.350” (17.003” – 17.697”)

.6R 17.836” (17.479” – 18.193”)

.7R 17.776” (17.420” – 18.132”)

.8R 16.258” (15.933” – 16.583”)

.9R 12.576” (12.325” – 12.828”)

.95R 9.304” (9.118” – 9.490”) width

Full width, measured width

Full width, measured width

Full width, measured width

Full width, measured

g. Maximum Thickness at Prescribed Stations (all units in inches with new manufacture tolerance of +/-

0.005”)

Blade 1 – thicknesses (Indicate MAX thickness measurement, only)

.4R

P O N M L K J H G F E C Design .635 .760 .928 .984 .995 .979 .940 .879 .782 .701 .584 .406

Measured

.5R

Design .479 .595 .748 .823 .844 .844 .819 .770 .681 .601 .491 .425

.6R

Design .364 .463 .593 .677 .697 .695 .678 .643 .578 .510 .424 .283

.7R

Design .280 .359 .481 .544 .556 .551 .538 .518 .463 .411 .347 .259

.8R

Design .226 .289 .395 .456 .462 .455 .438 .414 .383 .360 .324 .245

.9R

Design .177 .213 .271 .334 .355 .354 .344 .330 .310 .289 .253 .190

.95R

Design .158 .186 .234 .279 .292 .296 .295 .284 .260 .241 .216 .159

Blade 2 – thicknesses

P O N M L K J H G F E C

P O N M L K J H G F E C

Blade 4 – thicknesses

P O N M L K J H G F E C

Blade 5 – thicknesses

P O N M L K J H G F E C

h. Track Deviation/Rake

Note: ISO 484/2, Section 13 provides locations for measurement

Requirement (Max deviation, +/- 1% propeller diameter), +/- .409”

Rake

Point B Measured

Blade 1

Blade 2

Blade 3

Blade 4

Blade 5

Max deviation between ANY two blades (max – min)

i. Edge conditions, smooth, not sharp edges – Acceptance of data presented in Section 6 herein fulfills this requirement?

Yes / No

j. Angular Spacing of Blade Center Axis

Requirement Blade 1 & 2

Measured

Blade 2 & 3

Measured

Blade 3 & 4

Measured

Blade 4 & 5

Measured

Blade 5 & 1

72.0° +/- 0.5°

k. Surface Finish of Blade, Hub and Bore Areas – Acceptance of data presented in Section 5 herein fulfills this requirement?

l. Surface Inspection (Visual and 100 Percent Dye Penetrant) – Acceptance of data presented in Sections 4 and 5 herein fulfills this requirement?

m. Hub Bore Inspections and Fit – Acceptance of data presented in Section 3 fulfills this requirement?

n. Material Composition – Acceptance of data presented in Section 1 herein fulfills this requirement?

o. Balancing Data – Acceptance of data presented in Section 6 herein fulfills the requirement?

(continued below)

p. Fairness – Indicate areas of unacceptable fairness. Provide two sheets, one per face and label pages 18a and

18b.

Pressure Face Suction Face

9. Propeller Identification Markings (P-245-0612, Section 3.15)

The following are marked in ¼” to ½” high text on all newly manufactured propellers (check beside each box when verified):

a. Serial number (provided by Contracting Officer)

b. Ship class – 87 WPB

c. Starboard or Port

d. Rotation direction (from aft looking forward)

e. National Stock Number (NSN)

f. Design diameter – 40.94 inches

g. Design pitch at .7R – 50.18 inches

h. Manufacturer name/date of manufacture

i. Actual propeller weight

j. Material grade – ABS Grade 4

10. Photo Documentation Phases (P-245-0612, Section 3.16.1 and 3.16.2)

Provide photographs in accordance with Sections 3.17.1 and 3.17.2