Bottom plating within 4th strake from keel.pdf

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FY24 Yaquina Overhaul Solicitation
Solicitation number
W9127N23B0014
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This document contains an ultrasonic thickness measurement report of the bottom plating on the port side of the USACE dredge Yaquina. The report details measurements taken at 112 locations on the bottom plating, indicating the nominal thickness, readings taken, average thickness and percentage of wastage. Substantial wastage readings over 18.75% are shown in blue and excessive wastage readings over 25% are shown in red. A related federal contract opportunity posted by the USACE Engineering District Portland seeks bids for the FY24 overhaul of the Yaquina dredge under solicitation number W9127N23B0014. The solicitation is for dredge overhaul services to address the substantial and excessive wastage identified in the ultrasonic thickness report of the Yaquina's bottom plating.

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Note: Substantial wastage [18.75%] readings are shown in (blue) and excessive wastage [25%] readings are shown in (red).

See following spreadsheet for a complete list of readings and wastage.

59 58 56 54 52 50 48 46 44 42 40 38 36 34

.424

.411 .389

.444

.375

.347

.418.437

USACE Dredge "YAQUINA" Ultrasonic Thickness Measurements of Bottom Plating

Drawing 26

Doubler

Port

Stbd.

.313 .396

Note: Blue percentages show Substantial wastage. Red percentages show excessive wastage.

info@certifiedndt.com

(253-952-2337

Report: 53303 Date: 3/3/2023

1 2 3 4 5 6 7 8 9 10 .437 .418 .424 .313 .437 .347 .375 .396 .389 .411 .444 .395

%Wastage 4.35% 2.97% 28.38% 0.00% 20.59% 14.19% 9.38% 10.98% 5.95% 0.00% 9.52% .328Bottom Plating 1 Port Bottom Plating 25%

USACE Dredge "YAQUINA"

Ultrasonic Thickness Measurements of: Bottom Plating [Drawing 26]

Structure Location Number Side Structural

Member Max. Allow.

Wastage Max.

Dim.

Nominal Thickness

Readings Avg./ % Loss

File details come from the government source that posted it. Updated .