0104_A_Mechanically_Clean_and_Preserve_Tanks_Rev_A.docx

USNS CARL BRASHEAR

( TAKE 7)

1.0 ABSTRACT:

1.1. This item describes the requirement mechanically clean and preserve the Salt Water Ballast Tank, Ships Potable Water Tanks, Cargo Potable Water Tanks, and Distilled Water Tank.

2.0 REFERENCES:

2.1. Military Sealift Fleet Support Command (MSFSC) Standard Work Item for Repetitive Repair Requirements; Item No. 10 dated 22 March 2010; Tank, Void and Cofferdam Preservation

2.2. Steel Structures Painting Council, Good Painting Practice, Volume 1, Fourth Edition.

2.3. Steel Structures Painting Council, Systems and Specifications, Volume 2, Eighth Edition.

2.4. MSC PPG Paint Handbook

2.5. NAVMED P-5010-6, Water Supply Afloat

3.0 ITEM LOCATION/DESCRIPTION:

3.1. Location/Quantity:

3.1.1. 6-54-01 Salt Water Ballast Tank, 100% Capacity 482 cubic meters (30,000 sq ft)

3.1.2. 3-79-1 Potable Water Tank, 95% Capacity 100 cubic meters (2200 sq ft)

3.1.3. 3-80.5-1 Potable Water Tank, 95% Capacity 100 cubic meters (2200 sq ft)

3.1.4. 3-79-2 Cargo Potable Water Tank, 95% Capacity 100 cubic meters (2200 sq ft)

3.1.5. 3-80.5-2 Cargo Potable Water Tank, 95% Capacity 100 cubic meters (2200 sq ft)

3.1.6. 3-79-0 Distilled Water Tank, 95% Capacity 119 cubic meters (2800 sq ft)

3.2. Item Description/Manufacturer's Data:

3.2.1. Bill of Materials (Contractor Furnished):

3.2.2. Quantities are considered estimates. The Contractor shall provide the exact quantities and additional material such as miscellaneous pipe fittings, elbows, caps, valves, pipe hangers, weld material, cable hangers, cable tags, buswork, etc., which are not included in the List of Materials, in order to install a fully functional system which meets the requirements of this specification

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES:

4.1. Government Furnished Material (GFM):

4.2. Government Furnished Services (GFS):

4.2.1. PPG Paint Representative

5.0 NOTES

5.1. The contractor and all subcontractors, regardless of tier, must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTRs.

5.2. The contractor and all subcontractors regardless of tier are advised to review the other work items under this contract to determine their effect on the work required under this work item.

5.3. THIS SHIP CONTAINS HIGH VOLTAGE (HV) ELECTRICAL SYSTEMS. OBEY ALL POSTED AND VERBAL INSTRUCTIONS REGARDING SAFETY AND EXCLUSION FROM HIGH VOLTAGE AREAS. AT NO TIME APPROACH, WORK ON, OR ENTER A HIGH VOLTAGE AREA WITHOUT PROPER AUTHORIZATION

5.4. THE T-AKE CLASS ELECTRICAL COLOR CODING DOES NOT FOLLOW CONSISTENT COLOR SCHEME. THE SHIP IS KNOWN TO HAVE CURRENT CARRYING CONDUCTORS COLORED GREEN, BLUE, BLACK, AND WHITE. ASSUME ALL ELECTRICAL CABLES ARE ENERGIZED UNTIL TESTED AND PROVEN OTHERWISE. TEST ALL ELECTICAL CABLES TO ENSURE THEY ARE DE-ENERGIZED PRIOR TO WORKING ON THE ITEM.

6.0 QUALITY ASSURANCE REQUIREMENTS: None additional

7.0 STATEMENT OF WORK REQUIRED:

7.1. Work item 021 covers tag-Out of all required systems and equipment to include draining and disposal of any liquid in accordance with all federal, state, and local regulations.

7.1.1. Plug, blank, wrap, cover, seal, and mask suction and discharge piping in the tank.

7.1.2. Protect the deck and other equipment and components in way of the manhole access from damage due to water wash, dust and debris. Install a dirt collecting mat on the deck directly outside each access opening.

a. Ensure plugging and blanking does not result in flooding or damage to ship's equipment

7.1.3. Protective covering shall be inspected at regular intervals, but not less than at the start of each work shift. Degraded protective covering shall be repaired prior to the restart of work. Contamination of the vessel and its equipment shall be reported to the MSC Port Engineer verbally, immediately upon its discovery, followed on the next work day in writing, if contamination or surface damage has occurred. The contractor shall be responsible for cleaning the contaminated equipment and showing that the contamination has not caused damage to same. Cost to repair equipment damaged by such contamination shall be borne by the Contractor.

7.1.4. Remove and dispose of industrial debris from the ship on a daily basis

7.2. Erect staging as necessary to access tank overhead.

7.3. Accomplish the requirements of Reference 2.1 paragraphs B-2, C-2, and C-4. In addition to the requirements of Reference 2.1, accomplish the following:

7.3.1. The entire interior of the tank shall be HP fresh water washed to remove dirt, rust and rust scale, loose, flaking, peeling or otherwise deteriorated coatings and salts. Equipment utilized shall maintain a discharge pressure of 2,500 to 3,000 psi.

7.3.2. In conjunction with the HP water washing accomplish the requirements of SSPC-SP1, Solvent Cleaning using Prep 88, to remove all dirt, oil, grease, soluble salts or other organic matter. Biodegradable cleaners or other eco-friendly methods/agents shall be used to the greatest extent possible.

7.3.3. All areas of rust, rust scale or coatings which are cracked, blistered, peeling, flaking or otherwise deteriorated shall be prepared in accordance with the Surface Preparation Standard SSPC-SP11, Power Tool Cleaning To Bare Metal. Ensure that a minimum surface profile of 1 mil is attained. All tightly adherent paint edges shall be feathered-in.

7.3.4. . The maximum allowable contamination concentrations shall be less than 10 ug/cm2 of chloride contaminants as determined by field or laboratory analysis using reliable, reproducible test equipment. All surfaces shall be allowed to thoroughly air dry.

7.3.5. No painting is to be done from Sunset to 0700 (7:00 AM) the following morning without prior approval from the MSCREP.

7.3.6. All areas to be coated are to be blown down with dry, oil free air prior to painting.

7.3.7. No painting shall take place without prior notification to the MSCREP paint manufacturer's representative

7.3.8. Paint is not to be applied to hull surfaces when the surface temperature is below 40 degrees F., when the humidity is above that recommended by the paint manufacturer or as otherwise limited by the paint manufacturer's recommendations, unless prior permission is obtained from MSCREP in writing.

7.3.9. Application of all products is to be by airless spray.

7.3.10. Mil thickness is to be measured dry with a dry film thickness indicator. Dry film thickness measurements are to be taken at a minimum of 5 locations for each 1,000 square feet of surface area and recorded on the contractor test and inspection records.

7.4. Remove protective covering upon completion of contamination-producing operations.

7.5. Accomplish a final inspection of the work area to identify the presence of contamination and/or damage created by contamination-producing operations. Contamination/damage shall be documented on the inspection record.

7.6. Remove from the ship and dispose of debris and foreign matter generated as a result of work being accomplished. Comply with the requirements of federal, state, and local laws, codes, ordinances, and regulations or as specified elsewhere in the Job Order.

7.7. Clean all areas, spaces and machinery of ship contaminated by grit and dust.

7.8. Remove all sheeting, tape and covers.

7.9. Potable Water Tank Decontamination:

7.9.1. Each coat of paint in the system shall be allowed to cure a minimum of 48 hours, under the dehumidification conditions set forth in the Universal Requirements above, prior to the start of the successive coat.

7.9.2. The tank and associated disturbed piping and equipage shall be super chlorinated in accordance with the guidance provided in NAVMED P-5010-6, Water Supply Afloat, Section 6-22.

7.9.3. After successful chlorination the tank shall be drained and refilled with potable water. Water samples shall be laboratory tested for free available chlorine and bacteriological contamination. Furnish three (3) copies of the lab results and certification that the water meets the requirements of the USPHS for potable water to the MSCREP.

7.10. Preparation of Documentation:

7.10.1. Provide a final report in electronic format for each tank the surface preparation accomplished, approximate sqft mechanically cleaned to SSPC-SP11, the paint used, number of coats and DFT of each coat. Potable water tanks will also have the decontamination procedure documented to specify the type and of amount of chorine used and the final lab results required in 7.9.3.

7.11. Inspection/Test:

7.11.1. An inspection team composed of the MSCREP, Paint Manufacturer's Representative and the Contractor will be present throughout the entire period of preparing the surface prior to coating applications. The inspection team will inspect the quality of surface preparation achieved. No paint is to be applied until surfaces have been approved by the MSCREP. Suitable protective clothing and approved type masks are to be provided to the inspection team by the Contractor.

8.0 GENERAL REQUIREMENTS: None additional

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