871-B405-01 Cathodic Protection.pdf

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Excavator Barge
Solicitation number
W912BU-23-B-0024
Issued by

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This document provides specifications for installing cathodic protection anodes on an aluminum hull vessel. It requires furnishing and installing eight 25-pound aluminum anodes in specified locations to prevent corrosion, in accordance with military specification MIL-A-24779. The anodes should be tapered to minimize turbulence, attached with mild steel core straps welded after painting, and replaced every two years. The installation should not interfere with dry docking plans shown in contract drawing 871-B170-01. A total of 200 pounds of aluminum anodes are needed for protection.

The related federal contract opportunity is solicitation number W912BU-23-B-0024 for an excavator barge from the Department of the Army Corps of Engineers Engineering District in Philadelphia.

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GENERAL NOTES:

1. CAD USERS: THIS DRAWING IS INTENDED TO PROVIDE A LEVEL OF DETAIL REQUIRED FOR ABS REVIEW AND FOR ACCURATELY BIDDING ON

THIS VESSEL. USERS ARE RESPONSIBLE TO VERIFY ALL INFORMATION FOR DIMENSIONAL ACCURACY WHEN ORDERING OR LOFTING MATERIAL.

2. ALUMINUM HULL ANODES SHALL BE DESIGNED FOR USE ON HULLS OF SHIPS, TUGS, BARGES, ETC. ALL ANODES SHALL BE FAIRED OR

TAPERED TO MINIMIZE TURBULENCE. ANODES SHALL BE MANUFACTURED WITH MILD STEEL CORE STRAPS. EIGHT (8) ANODES SHALL BE PROVIDED. ANODES SHALL WEIGH 25 POUNDS EACH AND BE LOCATED GENERALLY AS SHOWN ON THIS DRAWING.

3. ALL ANODES STRAPS SHALL BE WELDED TO THE HULL AFTER THE PAINT HAS BEEN APPLIED TO THE HULL.

4. ANODES SHALL NOT BE PAINTED.

5. ALL CORE STRAPS SHALL BE PAINTED AFTER WELDING.

6. REPLACE ALUMINUM ANODES EVERY 2 YEARS

7. THE ANODES SHALL BE MANUFACTURED AND INSTALLED IN ACCORDANCE WITH MIL-SPEC MIL-A-24779.

8. THE ANODES SHALL NOT BE INSTALLED IN AN AREA THAT WOULD INTERFERE WITH THE PLACEMENT

OF A DOCKING BLOCK ON THE VESSEL'S DRY DOCKING PLAN DEFINE IN CONTRACT DRAWING 871-B170-01.

BOTTOM PLAN 4-B

200 LBS. OF ALUMINUM ANODES NEEDED

EACH ANODE WEIGHS 25 LBS. EACH

8 LOCATIONS SHOWN

LOOKING UP AT BOTTOM PLATING

FRAME SPACING TYPICALLY 4'-0"

STARBOARD PROFILE 4-E

25 LBS. ANODE

TYP.

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