AMEND0003 0603_A_ Flight Deck Safety Nets Repair.doc

USNS SUPPLY

(T-AOE 6)

OUTFIT, FURNISHING & HABITABILITY

RFP NO. N00033-13-R-7508

28 AUGUST 2013

ITEM NO. 603

CATEGORY “A”

MSC/PM1CM2/MJP

AMENDMENT 0003

FLIGHT DECK SAFETY NETS REPAIR

1.0 ABSTRACT:

1.1 This item describes the preservation, replacement and repairs to the flight deck safety nets and associated hardware.

2.0 REFERENCES:

2.1 Drawing 612-6361443 (Rev.-J); "Helo Safety Nets Arrangement & Detail". (Available Onboard Vessel).

2.2 NAVSEA Drawing 803-5000902 Rev. B, "Safety Nets, Deck Edge, CRES Net, Stl/CRES Frame".

2.3 Systems and Specifications, Steel Structures Painting Manual, Vol.2, SSPC Steel Structures Painting Council (Latest Edition).

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.

2.6 SSPC-PA 2, Measurement of Dry Coating Thickness with Magnetic Gages.

2.7 SSPC-VIS-1 Visual Standard for Abrasive Blast Cleaned Steel.

2.8 SSPC-VIS-3 Visual Standard for Power and Hand Tool Cleaned Steel.

2.9 Surface Conductivity Testing Procedure “Cell Retrieval Method Bresle Patch ISO 8502-6.

3.0 ITEM LOCATION/DESCRIPTION:

3.1 Location: Flight Deck Perimeter, 01 level; Frames 645 thru 735, Port and Stbd, Aft.

3.2 Quantity: See References in Section 2.0 for details and verify against installed locations. Total of Twenty-two (22) Flight Deck Safety Net Frame Assemblies, includes thirty-four (34) safety nets; and two (2) connecting Corner nets. Approx Net frame dimensions are listed below:

NOTE:

Contractor shall verify EXACT measurements PRIOR TO disassembly of each net.

3.3 Description: Flight Deck Perimeter Safety Net Assemblies include the following components: Steel Frames; Stainless Steel CRES Netting, crimping, lacing wire and Crimps, fasteners; support wires; pendant assemblies including turnbuckles; pins, deck mounted frame latches; frame mounted clips and padeyes, shackles, and misc fasteners. See also References in Section 2.0.

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES:

4.1 Government Furnished Equipment: None

4.2 Government Furnished Material:

4.2.1 Paint:

4.3 Government Furnished Services:

4.3.1 Government 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 including but not limited to GTRs 1-7 and 29.

5.2 The contractor and all subcontractors regardless of tier are advised to review ALL other work items under this contract, to determine their affect on the work required under this work item. Many of the definitions relating to performance of this work item are found in Work Item 001.

5.3 ALL flight deck Safety Net frames shall be temporarily removed in way of painting Work Item 917 to allow for preservation of exterior fashion plate steel surfaces.

5.4 Verify references against installed locations and quantities.

6.0 QUALITY ASSURANCE REQUIREMENTS: None Additional

7.0 STATEMENT OF WORK REQUIRED:

7.1 Conduct a visual inspection and operational test in the presence of the Chief Mate of flight deck safety net frames. Lower all flight deck safety net frames from current upright stowed positions to their lowered, final resting positions. Accomplish a visual inspection of framework and all associated supports and hardware. Check nets for excessive “fishhook” and Sag Submit "as-found" condition report to MSCREP, noting any discrepant problems along with repair recommendations.

7.1.1 Prior to starting any removals required by this work item, contractor shall:

7.1.2 Identify, label, stamp/scribe and/or match mark each safety net frame with exact existing installed location, and match mark each net panel to each installed location on each frame.

7.1.3 Identify, quantify, label, tag, and bag ALL related hardware supporting each flight deck safety net frame, using same numbering/identification process for flight deck safety frames in 7.1.2.

7.1.4 Measure and record lengths of each frame, each net panel, and each support pendants (guy wire assemblies).

7.1.5 Submit a copy of sketch for safety net frame identification, and part tracking process used for each of the flight deck safety frames and associated hardware, to the MSCREP for future reference during reinstallation.

7.2 Temporarily install a fall prevention protective personnel barrier for the entire Flight Deck perimeter in way of existing framework to be removed. Provide and erect personnel warning signs noting the dangerous condition. Temporary protective personnel barrier and warning signs shall remain in place until existing flight deck safety frames are reinstalled.

7.3 Temporarily remove twenty-two (22) each Flight Deck Safety Net frames assemblies and two (2) corner filler nets (including associated components, hardware, securements and fasteners) described in Section 3.0. Rig from the Flight Deck installed locations and convey to shop using References 2.1 thru 2.3 are for guidance.

7.3.1 For Bidding purposes assume that 30 percent of the hardware securing the deck mounted retaining clips will break and require drilling and tapping

7.4 Temporarily remove and refurbish frame latching and releasing gear and components. Disassemble moving parts. Clean, straighten dress-up, and reassemble. Reinstall in original locations with new rubber and 316L hardware. Grease and lubricate ALL moving parts.

7.5 Accomplish inspection, cleaning, refurbishment, preservation, and greasing, of any/all moving parts, hinges, securements, fasteners, and turnbuckles.

7.6 Unlash and remove existing CRES netting from each of the flight deck safety net frames removed from vessel using Reference 2.3 is for guidance. DO NOT DESTROY EXISTING CRES NETTING.

7.7 Transport all Safety Net Frames to Contractor’s designated paint shop.

7.8 Perform a HP water wash of all frames exterior 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 crevices and areas of rust, rust scale, blistered, cracked, peeling or flaking coatings.

7.8.1 Accomplish the requirements of SSPC-SP-1, Solvent Cleaning, using a biodegradable detergent to remove residues of oil or grease that may be present.

7.8.2 Upon completion of all water washing chloride testing shall be performed on random areas of the frames. Use the Bresle Patch method for Chloride testing. 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.

7.8.3 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. Submit a report listing the results of the above test.

7.8.4 Abrasive blast the entire exterior of the Safety Net frames in accordance with Surface Preparation Standard SSPC-SP10/NACE 2, 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. The profile shall be determined using a Keane-Tator (or equal) Surface Profile Comparator; Testex (or equal) Replica Tape shall be used at a rate of one (3) reading per each frame for verification. Replica Tape shall be mounted and identified as to location and included as part of the final paint report.

7.8.5 For those areas not accessible to abrasive blasting, contractor may accomplish a SSPC-SP-11 surface preparation. AMEND 0003

7.8.6 Blow down each panel following abrasive blast to remove particulate, dirt, grit, debris, and remove any grime.

7.8.7 (CHECKPOINT) After surface preparation a joint inspection by shipyard and MSCREP shall be accomplished. The prepared frames will be inspected for cracks, corrosion and other deteriorated conditions. Frames which require replacement or repair will have replacement or repair work completed and be re-blasted prior to coating. AMEND 0003

a. Following joint inspection contractor shall submit an “As-Found” Condition report with repair recommendations. The report shall clearly indicate any work outside scope listed below. AMEND 0003

NOTE:

For bidding purposes it shall be assumed that four net frames will require replacement and the others net frames will require a total of 100 linear inches of replacement weld, manufacture of new frames or repairs shall be per References 2.1 through 2.3.

7.9 Ensure the following conditions are met prior to ALL painting:

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

7.9.2 The surface appearance of the prepared surface shall meet the definition established by the cited surface preparation standard.

7.9.3 Air and metal substrate temperatures shall be within the range published by the paint manufacturer.

7.9.4 The ambient air and substrate temperatures register at least 5o F. above the dewpoint temperature.

7.9.5 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.

7.9.6 No coating shall be applied at temperatures below 35o F. without prior written approval of MSCREP.

7.9.7 Just prior to each coat perform and SSPC-SP-1. Panels SHALL BE free of grit, dust, dirt, debris prior to accomplishment of coating process.

7.10 Prior to the application of ANY coating the area to be painted shall be inspected and approved by the MSCREP and the Paint Representative during a scheduled CHECKPOINT. 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, using Reference 2.5 as guidance, 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 each subsequent coat and each subsequent stripe coat.

7.11 Apply the following paint system to all of the surfaces prepared in Section 7.8:

PPG Marine Paint(GFM, SEC 4.0)

NOTE:

Stripe-coat all corners, weld seams or other areas that are not conductive to proper coverage by spray application. Stripe coat shall extend a minimum of 1” from each edge of the area being striped.

NOTE:

Specification of Stripe Coating in no way relieves the contractor of the requirement to achieve complete coverage of the surface with each of the specified Full Coats. Stripe Coats are additional coats applied to specific areas of the tanks represent high corrosion risk. Stripe Coats shall NOT be used to correct holidays or other application defects in the full coats. Spray application of the Stripe Coats shall NOT be allowed.

7.11.1 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.

7.11.2 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.

7.12 Upon completion of all painting, transport frames to contractor shop for netting reinstallation.

7.13 Re-install CRES netting previously removed from each net frame. Renew ALL lashing wire rope, netting attachments, eyelets, crimping, Ferrules, and fasteners using CRES Stainless Steel materials. Reference 2.3 is for guidance.

7.14 Upon completion of all shop work, convey flight deck net frame sections to vessel and reinstall in exact locations where previously removed.

7.15 All previously removed hardware in Paragraph 7.3 and 7.4 shall be renewed with Stainless Steel CRES materials. Install new hardware and new pendants using measurements recorded prior to removal in Paragraph 7.1. Ensure new supporting pendants and turnbuckles are sized and adjusted correctly to align net frames evenly with adjacent frames. Take up any slack in pendants where found required.

7.16 Apply grease to all moving parts and zirc fittings. Exercise all moving parts to introduce grease to all surfaces.

7.17 Inspection/Tests:

7.17.1 Conduct operational tests. Prove all flight deck net frames operate and function as per design:

a. Lower all frames to full rested positions.

b. Verify supporting pendants and securing hardware is properly installed and tensioned, and nets are properly aligned, without interference from adjacent frames.

c. Raise frames to upright stowed positions.

d. Verify all securing and locking in mechanisms are properly aligned without binding or interference.

7.17.2 Conduct weight testing and certification:

a. Accomplish testing of ALL flight deck safety net frames, netting, filler nets, and pendants; in their installed lowered/rested positions, in accordance with Reference 2.3 (Note 5). Hold test weight of each section for ten (10) minutes.

b. Pull test shall demonstrate and prove entire net frame, netting, pendant assembly, including shackles, thimbles, swage sleeves, turnbuckles and end fittings.

c. Per Reference 2.3, Safety Net Assemblies shall be tested uniformly, distributing test weight over a one square foot minimum area located in the center of the net. To prevent the load from bearing on the frame during the test, the area the load is distributed over shall not exceed the total area of the net.

d. Per Reference 2.3, Filler Nets located between adjacent safety nets shall be tested uniformly, distributing the test weight over the total area of the net.

e. Test weight shall be rigged to a standby crane while conducting each test, to prevent damage or injury should netting or frames give way during test procedure.

f. Rig, return, and stow all flight deck safety nets to fully upright, stowed and secured positions upon completion of all work and testing.

7.18 Paint all disturbed surfaces to match surrounding surfaces, resulting from work and testing accomplished, using International Marine Coating system.

7.19 Stencil date of pull test, safe working load, and testing facility on each Safety Net frame after satisfactory completion of testing. Submit "as-released" condition report to MSCREP, noting conditions and results of all final operational and weight tests accomplished. Include Certificate documents for each frame, noting weight test amount, date, safe working load, and test facility information.

7.20 Preparation of Drawings: None

7.21 Manufacturer's Representative: None

8.0 GENERAL REQUIREMENTS: None Additional

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