Amendment_0007.pdf

USNS ARCTIC

(T-AOE 8)

DRYDOCKING AND UNDOCKING RFP NO. N32205-14-R-2000

29 JANUARY 2014

ITEM NO. 909 CATEGORY “A” MSC/PM1CM2/MJP/jb

BLAST AND COAT TANKS

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1.0 ABSTRACT:

1.1. This item describes the requirement to paint various

tanks through out the ship

2.0 REFERENCES:

2.1. NAVSEA Drawing 085-6362912, Booklet of General Drawings

2.2. NAVSEA Drawing 631-6360522, Paint Schedule

2.3. MSCLANT Standard Item No. 103, Cargo Petroleum Tanks, Initial Coating, Standard Item No. 103, Issued 15 September 2003

2.4. Steel Structures Painting Council, Good Painting

Practice, Volume 1, Fourth Edition.

2.5. Steel Structures Painting Council, Systems and

Specifications, Volume 2, Eighth Edition

3.0 ITEM LOCATION/DESCRIPTION:

3.1. Location:

Name Tank Surface Area (Sq. Ft.)

CARGO DFM 7-425-1-FF 35000

CARGO DFM 7-425-2-FF 35000

FUEL SERVICE 7-445-1-F 6800

FUEL SERVICE 7-445-2-F 6800

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES:

4.1. The following materials will be Government furnished:

Coat Product Thickness Color Amount 1st coat, Amercoat 240 6 mils DFT Red TBD Strip Amercoat 240 4 mils DFT Light Gray TBD 2nd Coat Amercoat 240 6 mils DFT Off White TBD Solvent T-10 NA NA TBD

4.2. Government Furnished Services (GFS):

4.2.1. Government Paint Representative

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5.0 NOTES:

5.1 The contractor and all subcontractors, regardless of

tier, must consult the General Technical Requirements 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 GTR’s, including but not limited to, GTR’s 1 through 7, 23, 25 and 29.

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. Many of the definitions relating to the performance of this Work Item are found in Work Item 001.

5.3 Paint for potable water tanks shall not be thinned

except in extremely unusual circumstances and shall be approved by the Paint Rep and MSCREP.

5.4 The contractor is responsible for all costs associated

with monitoring, containment, handling, collection, processing, clean up, recycling, disposing of wash water, rinse water, dissolved solvents, used and generated during work accomplished by this work item, whether on the ship, on the pier adjacent to the ship, or in the dry dock basin. ALL LABOR AND MATERIAL COSTS

ASSOCIATED WITH THIS LEVEL OF EFFORT, WHERE REQUIRED OR

FOUND NECESSARY, SHALL BE INCLUDED IN THE BID PRICE OF

THIS WORK ITEM.

5.5 All debris generated in the performance of this item, whether solid or liquid, shall be disposed of in accordance with applicable Federal, State and Local Regulations, and cost of such included in the bid price of this work item.

5.6 Work in Conjuction with staging for Close Up Inspection

6.0 QUALITY ASSURANCE REQUIREMENTS:

6.1 MSC reserves the right to require at no additional cost

that the contractor perform additional tests or inspections as required to ensure compliance with this Work Item including, but not limited to, Blotter Test, 910-3

Vial Test, pH Test, Non-Visual Surface Contaminant Tests, Adhesion Tests and Sieve Tests.

7.0 STATEMENT OF WORK REQUIRED:

7.1 Make temporary access cuts for ventilation and access

during blasting and coating operations.

7.1.1 Prior to making access cuts, submit to MSCREP

and ABS a sketch showing the size and location of access cuts. MSCREP and ABS approval shall be obtained prior to making access cuts.Lighting shall be sufficient for preparation, inspection and application requirements.

7.2 Provide ventilation of sufficient size and type to

maintain a clear atmosphere during abrasive blasting operations.

7.3 Provide and maintain adequate lighting for surface

preparation, coating and inspection activities.

7.4 Perform a HP water wash of the entire tank interior

using fresh water at 2,500 to 3,000 psi to remove slime, dirt, mud, soluble salts and other foreign matter. Particular attention shall be given to the undersides of stiffeners, snipes, limber holes in longitudinals, crevices and areas of rust, rust scale, blistered, cracked, peeling or flaking coatings.

7.4.1 Accomplish the requirements of SSPC-SP1, Solvent Cleaning, using a biodegradable detergent to remove residues of oil or grease that may be present. Upon completion of all water washing chloride testing shall be performed on random areas including the tank bottom and undersides of structural members. If contamination is found, additional tests shall be made as necessary to determine the extent of contamination and to prove the success of remediation. 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.

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NOTE:

DURING ABRASIVE BLASTING AND PAINTING ACTIVITIES, USE OF

DEHUMIDIFICATION EQUIPMENT IS DISCRETIONARY. HOWEVER IT IS

EXPECTED THAT THE ENTIRE TANK WILL BE PRESENTED FOR INSPECTION AT

ONE TIME. PIECE-MEAL PRESENTATION WILL NOT BE ACCEPTED. IF

USED, AS A MINIMUM THE DH SHALL:

EFFECT A COMPLETE AIR CHANGE AT LEAST ONCE EVERY ONE-HALF

(1/2) HOUR

MAINTAIN THE RELATIVE HUMIDITY WITHIN LIMITS SET BY THE

PAINT MANUFACTURER

MAINTAIN A MINIMUM OF 5o F DIFFERENTIAL BETWEEN THE DEW

POINT AND THE AIR AND SUBSTRATE TEMPERATURE WITH THE DEW

POINT BEING THE LOWER TEMPERATURE

DUCTING IS TO BE RUN SO AS NOT TO CREATE A SAFETY HAZARD.

DUCTING IS TO BE AIRTIGHT TO PREVENT CONTAMINATION OF THE

VESSEL'S INTERIOR WITH GRIT, DUST OR PAINT.

7.5 Prior to initiating abrasive blasting, protect the

vessel's equipment from damage caused by blasting abrasive, dust or paint. Measures to be taken include, but are not limited to, the following:

7.5.1 All suction, fill and vent lines shall be

broken at the first joint off the tank and blanked. Suction bellmouths shall be unbolted, hung-off for coating and the open end of the line blanked-off. Lines which are of all welded construction or which do not have a mechanical joint within one (1) foot of the tank shall be plugged on the inside of the tank. A list of all blanks and plugs installed shall be furnished to MSCREP prior to the start of blasting and shall be used to ensure their removal upon the completion of all work.

7.5.2 Valve stems and reach rod universal joints in

the tank shall be greased and wrapped.

7.5.3 As necessary, based upon the location of

ventilation and dehumidification exhausts, grease and wrap valve stems and exposed portions of hydraulic cylinders. Install filters on air intake vents. Install covers on fuel tank vents.

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7.5.4 Appropriate measures shall be taken to ensure

that the vessel's interior and its equipment is not subject to contamination from blasting grit, dust or paint spray.

7.5.5 Record the location, size, and color of all

ship's markings in the affected area.

7.5.6 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 MSCREP verbally, immediately upon its discovery, followed by a written report within four (4) hours of the verbal notification. The contractor shall be responsible for cleaning the contaminated equipment and showing that the contamination has not caused damage. Cost to repair equipment damaged by such contamination shall be borne by the Contractor.

7.6 Prior to the start of abrasive blasting the blast media

shall be tested to ensure that it is not contaminated with chlorides, as determined by field or laboratory analysis using reliable, reproducible test equipment.

7.7 For ventilation and access during surface preparation

and coating operations, Contractor may elect to make a temporary access. Prior to making access cuts, submit to MSCREP and ABS a sketch showing the size and location of access cuts. MSCREP and ABS approval shall be obtained prior to making access cuts. A small Secondary access exists in each of the tanks.

7.8 Abrasive blast the entire interior of the tanks

identified in 3.0 including all structural members, internal piping, pipe hangers, reach rods and reach rod support brackets, the interior of the manhole covers, the interior of removed access cuts, in accordance with Surface Preparation Standard SSPC-SP10/NACE 5, Near White Metal Blast Cleaning. The blast profile achieved shall be angular in nature and within the range set by the manufacturer’s product data sheet for the coating system being applied. Profile shall be determined using a Keane-Tator (or equal) Surface Profile Comparator.

Testex (or equal) Replica Tape shall be used at a rate

910-6 of one (1) reading per 1,000 SF for verification.

Replica Tape shall be mounted, identified as to location and included as part of the final paint report.

MSC RESERVES THE RIGHT TO PERFORM ADDITIONAL TESTS OR INSPECTIONS

AS REQUIRED TO ENSURE COMPLIANCE WITH THIS ITEM INCLUDING, BUT

NOT LIMITED TO, BLOTTER TEST, VIAL TEST, PH TESTS, NON-VISUAL

SURFACE CONTAMINANT TESTS, ADHESION TESTS AND SIEVE TESTS

7.9 Upon completion of abrasive blasting all spent grit, dust and dirt generated by this work item shall be removed. All internal tank surfaces shall be blown-down with dry, oil free air at a maximum pressure of 10 psi and/or vacuumed clean.

No Coating Shall be applied without the of the Government Paint

Representative being present

7.10 Apply a coating system identified in 4.0 to all

interior surfaces. Dry film thickness of each coat of paint shall be within the range specified for that coating in the approved coating list identified above using Reference 2.2 for guidance. Stripe coat all limber holes, snipes, corners, weld seams, sharp edges and other areas that are not conducive to proper coverage by spray application. Striping shall apply to each coat of paint in the system applied.

STRIPE COATS SHALL NOT BE SPRAY APPLIED

7.11 Thinning of the paint will be allowed for viscosity

control if determined to be necessary by the paint manufacturer's representative. In no case shall the paint be thinned in excess of 5% by volume. Thinner utilized for viscosity control shall be new and of the type recommended by the manufacturer’s product data sheet.

7.12 Paint material shall be stored within the Paint

Manufacturer's recommended temperature range. When paint material is being applied, ensure that the material's temperature is within the Manufacturer's recommended range, but in any case, not less than 70o F.

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7.13 Ensure the following conditions are met prior to

painting:

7.13.1 Surfaces shall be clean, dry and free of oil, grease or residue from abrasive blasting.

7.13.2 The surface appearance of the prepared surface

shall meet the definition established by the cited surface preparation standard.

7.13.3 Air and metal substrate temperatures shall be

within the range published by the paint manufacturer.

7.13.4 The ambient air and substrate temperatures

register at least 5o F. above the dewpoint temperature.

7.13.5 The relative humidity is within the range set

by the manufacturer’s product data sheet. In the event that there is no range established by the manufacturer, the relative humidity shall be no higher than 85 percent.

7.13.6 No coating shall be applied at temperatures

below 35o F. without prior written approval of

MSCREP.

7.14 Prior to the application of any coating the area to be

painted shall be inspected and approved by the COR and the Paint Representative. Inspection shall include surface preparation including cleanliness and surface profile as determined by Keane-Tator Comparator (or equal) examination and/or replica tape, DFT readings of prior coats, etc., as applicable depending upon the current stage of coating application. This inspection includes not only the initial coat of paint, but all subsequent coats (including strip coats) as well.

7.15 Fit and weld the removed access plates. Close the tanks

and apply a 1 1/2 psi air test to prove the installed plates are tight. No leakage shall be allowed. Upon completion of the air test, re-open the tanks.

7.16 Upon completion of the air test remove all blanks and

plugs and make-up all lines as original. Re-install all interferences. All replacements shall be proven operationally. Clean the access plate(s) weld seams and

910-8 all other areas disturbed by re-installations where coating damage extends down to the steel substrate in accordance with SSPC-SP11, Power Tool Cleaning to Bare Metal. Edges of disturbed areas shall be feathered-in.

All prepared areas shall be coated with two (2) coats of epoxy. Touch-up coats shall be applied in the same order as the original coatings. Where only the top coat of the system has been damaged, those areas shall be sanded to abrade the surface, feathered-in and touched-up with the topcoat only. All areas of touch-up shall meet the same DFT requirements set for the tank in general.

7.17 Disturbed areas on the exterior of the tank, its

connected piping or equipment shall be cleaned, primed and coated to match the surrounding area.

7.18 The contractor shall prepare a paint report and submit

MSCREP within three (3) days of completing the coating application. The report shall include the following data:

7.18.1 The date, time and location of each

application.

7.18.2 The air and substrate temperatures, relative, humidity and dewpoint at the time of each application.

7.18.3 Dry film thickness readings at a rate of five

(5) spot readings per 500 sq. ft. of surface for each coat of paint. DFT gages shall be calibrated, spot readings shall be taken and DFT tolerances shall be in accordance with SSPC-PA2, Measurement of Dry Coating Thickness with Magnetic Gages.

7.18.4 The manufacturer, Product Identification

Number, color and Batch Numbers for each coat of paint applied.

7.18.5 Surface profile measurements of the metal

substrate.

7.18.6 Results of testing for non-visible surface

contamination (soluble salts).

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7.18.7 Upon completion, the vessel shall be cleaned of

all residues resulting from the surface preparation and painting operations. All debris generated in the performance of this item, whether solid or liquid, shall be disposed of in accordance with applicable Federal, State and Local Regulations.

7.19 Preparation of Drawings: None Additional

7.20 Manufacturer's Representative:

7.20.1 Government Paint Representative

8.0 GENERAL REQUIREMENTS: None Additional