0953_A_ANCHORS CHAINS AND LOCKERS 5YR_TAOE_CCSI.docx

USNS ARCTIC

(T-AOE 8)

ANCHORS, CHAINS AND LOCKERS (5 YR)

ABSTRACT

The purpose of this item is to examine, paint and test the anchoring system to include chains, chain lockers, hawse pipes, and other related gear during the Special Survey.

REFERENCES

1.1 NAVSEA Drawing No. 581-6360992, Anchor Handling Arrangement NAVSEA Drawing No. 098-6360991, Anchor Handling Model Surface Preparation Standard, SSPC-SP-6/NACE No. 3, Commercial Blast Cleaning (Available Commercially) PPG PMC-MSC Paint Handbook PPG Product Data Sheets, Amercoat 240 and Amershield

ITEM LOCATION/DESCRIPTION

Location Locations

a. Forecastle Windlass Machinery Room (1-35-0-Q)

b. Chain Locker (5-35-0-Q) Item Description/Manufacturer’s Data

Thirteen (13) Stbd

Anchor Equipment Two (2) 30,000 pound, fluked, stockless type anchors Three Hundred and Sixty (360) Fathoms of 3.5 inch chain (195 Fathoms Stbd anchor/165 Fathoms Port anchor) Two (2) Chain stoppers with 3-1/2 inch Pelican Hooks, One (1) per chain

c. One (1) chain locker each with approximately 9,200 square feet of surface area Towing Gear Equipment

d. Three (3) Chain Stoppers with Pelican Hooks (Same size as the anchor chain stoppers)

e. Three (3) Towing Pelican Hook Assembly, including Long Link

GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE

Government Furnished Equipment (GFE): None Government Furnished Material (GFM)

Government Furnished Services

1.1.2 The Government will provide the services of a OMT Paint Representative. The OMT Paint Representative will report to the OMT REP on a daily basis during the performance of this item. Cost of the OMT Paint Representative will be borne by the Government and is not to be included in this item.

2.0 NOTES

2.1 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 GTR’s including but not limited to GTR’s 1 through 7, 22, 23, 24, 28, and 29.

2.2 The contractor and all subcontractors, regardless of tier are advised to review other work items under this contract, including but not limited to Work items 020, 021, 023, 901 and XXX to determine their effect 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.

2.3 Solvents supplied as GFM are for viscosity control only. Solvents required for equipment clean-up are the responsibility of the contractor.

3.0 QUALITY ASSURANCE REQUIREMENTS: None additional

4.0 STATEMENT OF WORK REQUIRED

4.1 Inspect, paint and test the anchoring system to include chains, chain lockers, hawse pipes, and other related gear using References 2.1 through 2.5, ABS, IMO and manufacturer’s requirements as guidance.

4.2 Coordinate with ship’s force to have associated equipment locked and/or tagged out per ship’s lock out/tag out policy. When the maintenance is complete, coordinate with ship’s force to have associated equipment unlocked and/or tagged in per ship’s lock out/tag out policy.

4.3 Temporarily remove the access covers from the chain lockers, ventilate and certify they are gas free and safe for entry. Cleaning and gas free certification requirements for the subject spaces are covered under work items 020 and 021.

4.4 Inspect the ship’s anchoring system, chains and lockers listed in section 3.0 using References 2.1 through 2.2, ABS, IMO and Manufacturer requirements as guidance.

4.4.1 Examine the bitter end connections of each chain in its chain locker and disconnect from their breakaway fittings.

4.4.2 Temporarily remove the anchors and chains from the vessel and range them by flaking them out.

4.4.3 Examine and verify the required compliment and proper condition of each chain to include an inspection of all detachable links, swivels, markings, as well as for loose studs, abnormal wear, damage, deteriorated connecting links and missing plugs.

4.4.4 Gauge the chain links. Verify their mean diameter has not lost 12% or more of its original required nominal size.

4.4.5 Examine the anchors including their crown pin, anchor shackle, shackle pin and swivels for damage, cracks, bends, wear or defect.

4.4.6 Pressure wash the chain locker interiors. In conjunction with the water washing, pump out liquids and remove all mud, dirt and debris using contractor furnished pumps and hoses, as may be necessary to clean the lockers and bilge wells.

4.4.7 With the OMT REP and ABS Surveyor in attendance, examine the chain lockers, holdfasts, chain pipes, hawse pipes, chain stoppers, and pelican hooks for signs of damage, corrosion, erosion or defect. Provide and maintain adequate lighting and ventilation in the lockers to aid in the inspections and tests.

4.4.8 Examine the anchor windlass including foundation, prime mover, shafting, wildcats, brakes and controls.

4.5 Accomplish the following surface preparation on the anchors and chains:

4.5.1 Perform a HP water wash of the anchors and chains using fresh water at 2,500 to 3,000 psi to remove slime, dirt, mud, soluble salts and other foreign matter. Particular attention is to be given to the undersides of chain links, anchors, crevices and areas of rust, rust scale, blistered, cracked, peeling or flaking coatings. Accomplish the requirements of Surface Preparation Standard SSPC-SP1, Solvent Cleaning, to remove all dirt, oil, grease, soluble salts or other organic matter. Biodegradable cleaners or other eco-friendly methods/agents are to be used to the greatest extent possible.

4.5.2 Disconnect the first shot of both the port and starboard chains from the anchor swivels and the second shot of chain. Connect the second shot of chain, port and starboard, to their respective anchors. Shift the removed first shots of chain and connect to the original bitter end of their respective chains.

4.5.3 Prior to the start of abrasive blasting the blast media is to be tested to ensure that it is not contaminated with chlorides, as determined by field or laboratory analysis using reliable, reproducible test equipment.

4.5.4 Abrasive blast the port and starboard anchors and chains using Reference 2.3 as guidance. Turn the chains and anchors as necessary to ensure that all surfaces are abrasive blasted. The blast profile achieved is to be angular in nature and within the range set by the manufacturer’s product data sheet for the coating system being applied. Profile is to be determined using a Keane-Tator (or equal) Surface Profile Comparator.

4.5.5 With the OMT REP’s approval, surfaces may be prepared using ultra high-pressure water jetting in lieu of abrasive blasting at no additional cost to the Government. If allowed, water jetting is to be performed using Surface Preparation Standard SSPC-SP WJ-1/NACE WJ-1 as guidance. All blasted areas are to be prepared to a WJ-3, NV-2 Condition. No more than a light (L) grade flash rust is to be allowed on the steel at the time of coating application. If heavier flash rust is present, the surface is to be restored to a coatable condition, at the contractor’s expense, by pressure washing at 2,500 to 3,000 psi and allowing them to dry, or by other suitable means.

4.6 Coatings application

4.6.1 Surface preparation of the anchors and chains is to be inspected and approved by the OMT REP and the Paint Manufacturer’s Representative prior to the application of any coatings. This includes not only the initial coat of paint, but all subsequent coats as well. Inspection is to include observation, measuring and recording:

a. Surface profile is to be determined using a Keane Tator Surface Comparator (or equal) examination and/or replica tape

b. Environmental conditions (surface temperature, ambient air temperature, dew point temperature and relative humidity)

c. Over coating interval (curing time) since previous application

d. Dry film thickness readings at a rate of five (5) spot readings per shot of chain and five (5) spot readings per anchor for each coat of paint

4.6.2 Ensure the following conditions are met prior to painting:

a. Surfaces are to be clean, dry and free of oil, grease or residue from abrasive blasting.

b. Surface appearance meets the definition of SSPC-SP6, Commercial Blast Cleaning.

c. Air and substrate temperatures are to be within the range published by the paint manufacturer using References 2.4 and 2.5 as guidance.

d. During application and curing, the substrate temperature is to be at least 5°F (3°C) above Dew Point.

e. The Relative Humidity is within the range set by the manufacturer but is not to exceed 85%.

4.6.3 No coating is to be applied at temperatures below 35°F without prior written approval of the OMT REP.

4.6.4 No coating is to be applied between the hours of sunset and 0800 without prior written approval of the OMT REP.

4.6.5 All coatings are to be prepared and applied using the manufacturer’s requirements outlined in the Product Data Sheets, References 2.4 and 2.5 as guidance. The Product Data Sheets for each product being applied are to be on the jobsite and have been reviewed by the personnel involved.

4.6.6 Apply the following coatings to all prepared surfaces:

Amercoat 5450

Amercoat 15 2-3

Amercoat 5450

Amercoat 15 2-3

1 For vessels with gray freeboards the anchors are to be Haze Gray and for white or black freeboards the anchors are to be Black.

4.6.7 The anchors and chain stoppers are to be coated with one full topcoat.

4.6.8 Each shot of anchor chain is to be marked to help identify the length of chain payed out. Detachable links are to be painted in a Red, White or Blue repetitive sequence. In addition, a specific number of Links on either side of the detachable link are to be painted white in a repetitive sequence and the first stud on each side of the detachable link is to be wrapped with a specified number of turns of stainless steel wire to indicate their shot. The last shot of chain is to be painted bright Red and the next to last shot of chain is to be painted bright Yellow.

(color) Detachable Link (color) Adjacent Links (white) Adjacent Link (# of wire turns)

2nd last

Yellow

Last

Red

4.6.9 Random Wet Film Thickness (WFT) readings are to be taken during the application of coatings and Dry Film Thickness (DFT) readings after curing to verify correct millages were applied. Consult the OMT Paint Rep for proper overcoat intervals.

4.6.10 Paint material is to 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 for application but in any case, not less than 70°F.

4.7 Upon completion of all coating and marking of the chains, reconnect the bitter ends of the chain in their respective chain lockers. Ensure that there are no twists in the chain, either between the bitter end and the wildcat or between the wildcat and the pawl. Remove all rigging gear and debris. Heave-in the anchor chains and bring the anchors home.

4.8 Clean and touch-up any coatings disturbed by this work.

4.9 With assistance of the ship’s crew, coordinate and conduct functional tests of the Anchoring system listed in section 3.0 in the presence of the OMT REP and ABS Surveyor:

a. Operationally test each chain locker pumping arrangement; prior to loading the chain.

b. Operationally test each anchor windlass, ensuring proper operation of;

4.10 Upon completion of the survey, restore all access cover plates, grates, threaded plugs, suction strainers, and remove all blanks leaving the vessel in a ready for service condition.

4.11 Reports

4.11.1 When examination and servicing reveal any deficiency a condition report is to be submitted to the OMT REP with recommended repair and parts required. Submit one (1) electronic copy in Portable Document Format (PDF).

4.11.2 Submit one (1) electronic copy in Portable Electronic Format (PDF) of the gauging results to the OMT REP and one (1) electronic copy in Portable Document Format (PDF) to the ABS Surveyor. The report is to identify the original dimension, the as gauged dimension and % loss.

4.11.3 Prepare a Paint Report and submit one (1) electronic copy in Portable Document Format (PDF) within three (3) days of completing the coating application. The report is to include the following data:

a. The location, date and time of each coating application

b. Surface profile measurements of the metal substrate

c. Results of testing for non-visible surface contaminants (soluble salts)

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

e. Interval between coatings

f. Dry film thickness readings at a rate of five (5) spot readings per 1,000 sq. ft. of surface for each coat of paint

g. Paint Manufacturer, Product Identification Number, color and Batch Numbers for each coat of paint applied

4.12 Painting: None additional

4.13 Manufacturer’s Representative: None

4.14 Preparation of Drawings: None additional

8.0 GENERAL REQUIREMENTS: None additional

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