Thunderbird General Shipyard Spec 211025.docx

M/V THUNDERBIRD 2022 SHIPYARD PERIOD

Shipyard Specification

CONTENTS

M/V Thunderbird 2022 Shipyard Period 18 October 2021

Shipyard Specification 1

REFERENCES

1. 46 CFR§ 111.60-21, Cable insulation tests.

2. Standard Guide for Conducting a Stability Test (Lightweight Survey and Inclining Experiment) to Determine the Light Ship Displacement and Centers of Gravity of a Vessel, ASTM International, Standard No. F1321-14(2021), 2021.

3. Recommended Practice for Electrical Installations on Shipboard, Institute of Electrical and Electronics Engineers (IEEE) Standard 45 (IEEE-45), 2017.

4. Panelboards, Underwriters Laboratories (UL) Standard 67. 2020.

5. Standard Specification for Wrought Carbon Steel Sleeve-Type Pipe Couplings, ASTM International, Standard No. F682-82a(2018), 2018.

6. Standard Practice for Design and Installation of Rigid Pipe Hangers, ASTM International, Standard No. F708-92(2018)e1, 2018.

7. Pipe Hangers and Supports – Selection and Application, Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-69

8. M/V Thunderbird 2022 Shipyard Period Technical Specifications, Washington State Parks & Recreation Commission, October 2021.

9. Thunderbird Coatings Specifications, Sherwin-Williams Marine Coatings, Rev 2, 15 April 2021.

10. M/V Thunderbird Conditions Found and Structural Assessment Report, Glosten, Rev-, 18 March 2021.

11. Standard Specification for Carbon Structural Steel, ASTM A36 / A36M, 2019.

GENERAL GUIDANCE AND ADMINISTRATION

0. GENERAL ADMINISTRATIVE REQUIREMENTS

The intent of these Shipyard Contract Technical Specifications (“general specifications”), the work package specifications, and the references listed in scope of work herein is to describe the requirements for the M/V Thunderbird 2022 shipyard period.

The Contractor shall provide all labor, material, equipment, tools, transportation, and supplies required to complete the scope of work in accordance with the specifications and the terms of the contract.

It is not the intent for the specifications to include all details of the work. In the case of inconsistency between documents, the following order of precedence (from highest to lowest) applies:

Contract Shipyard Specifications (this document) Work Package Specifications- M/V Thunderbird 2022 Shipyard Period: Technical Specifications Other references Silence of one document with respect to details shown on another will not be considered an inconsistency, error, or omission.

Where two or more requirements provide inconsistent direction, the more stringent requirement will apply. Where such a requirement conflicts with the order of precedence of contract documents, the Owner will make the appropriate determination after being notified, in writing, by the Contractor. The Owner’s determination will not be cause for a monetary and/or a schedule claim by the Contractor.

In the event the Contractor discovers an error or omission in the specifications, the Contractor shall immediately notify the Owner in writing. The Owner will subsequently make corrections and interpretations as may be necessary for fulfilling the intent of the specifications.

Definitions and Terms The following terms and respective definitions apply throughout these specifications.

0. Vessel Description The M/V Thunderbird is a landing craft owned by the Washington State Parks & Recreation Commission that is used to service Washington's marine State Parks. The vessel has a length overall of 75'-6" and a beam of 20'-6". The figures below show the vessel at its most recent haulout.

Figure 1 M/V Thunderbird with bow gate lowered

Figure 2 M/V Thunderbird aft view Contract Documents Contract Documents for the M/V Thunderbird 2022 shipyard period include these Shipyard Contract Technical Specifications and the following Work Packages as outlined in the M/V Thunderbird 2022 Shipyard Period Technical Specifications.

· A 1.2 Consumable Replacement

· A.1.3 Rudder Tube Inspection and Consumable Replacement

· A 1.4 Seacock Valving Inspection and Consumable Replacement

· A 1.5 Engine-driven Bilge Pump Inspection and Piping Replacement

· Fuel manifold and piping evaluations and repair to ensure proper / equal flow from both tanks.

General Specification Requirements The provisions of this subsection apply throughout the specifications and to all addenda, appendices, and change orders, unless specifically exempted.

The ship will be delivered to the Contractor’s facility in “as is” condition. It is the Contractor’s responsibility to remove, modify, repair, or replace all systems necessary to accomplish the contracted work.

The Contractor shall satisfactorily perform all work and details connected therewith to construct, equip, outfit, test, and deliver the vessel to the Owner, fully certificated and afloat, and ready for the intended service. The completed vessel shall fully comply with all applicable requirements, as well as all salient requirements of the regulatory bodies cited herein for the affected areas.

The Contractor shall provide all necessary plant facilities, engineering, labor, services, materials, machinery, equipment, outfit, gas-freeing, spare parts, appurtenances, tools, appliances, transportation, supplies, fuel, water, power, lighting, air, crane, lift and disposal services, rigging, communication, handling lines, wharfage, docking, and shifting of vessel.

The Contractor shall provide the services of manufacturers’ representatives to accomplish any highly specialized work for which the Contractor does not have adequately trained personnel. Where installation supervision, adjustments, tests, and/or calibration of equipment by a manufacturer’s representative is required by these specifications, any charges therefore shall be to the Contractor’s account, unless it is for Owner-furnished equipment or stated otherwise.

The Contractor shall safeguard the vessel’s machinery and electrical equipment, the use of which will be made only upon approval by the Owner and under the supervision of trained and competent personnel. The Contractor shall protect by masking and other means all machinery, equipment, finished surfaces, and any other items or surfaces requiring protection during the course of the work.

Removals, Relocations, Alterations, and Interference Resolution The Contractor shall be responsible to make removals, relocations, and alterations as required by Owner-provided documentation. All interferences in way of the modifications shall be removed by the Contractor. Interferences may include, but are not limited to, machinery, joiner bulkheads and linings, drop ceilings and overhead panels, primary structure, piping, valves, ventilation ducting, insulation, deck coverings, electrical cabling and support structure, lights, receptacles, and fittings.

All items removed as interferences shall be retained for re-installation where possible, replaced if not possible to re-use. The Contractor shall be responsible for proper handling and storage of such items so as to prevent loss, damage, or deterioration. Material condition and operability of re-installed items and systems shall be at least equal to the same state prior to removal. All re-installed items shall be tested and demonstrated to confirm satisfactory re-installation.

Alterations made to strength members (such as stanchions, structural steel, etc.) shall maintain the structural integrity of the original installation and are to be effected to the satisfaction of the Owner.

Drydocking The Contractor shall be responsible for the satisfactory drydocking and undocking of the vessel as required to pursue the work described in the work package specifications.

The Contractor shall be responsible for blocking the hull of the vessel, specifically for the modifications, and if necessary, adjusting the docking plan to accomplish the work.

0. ACCESS and inspection Access The Owner, Owner's Representative, inspectors, surveyors, and the vessel’s crew shall be granted right of access to the vessel throughout the duration of the work. The vessel’s crew may be performing maintenance work throughout the duration of the work period. Every effort will be made to minimize interference with the Contractor’s work. In pursuit of this goal, the Owner may be present at Contractor’s daily production meetings for the purposes of scheduling and deconfliction.

Inspection During the 2022 yard period, the Owner's Representative will perform structural inspections on various areas of the vessel, including but not limited to tanks, voids, decks, foundations, and superstructure.

The Owner's Representative will issue written reports to the Owner and Contractor stating conditions found and recommendations for repairs where needed. Following the Owner's approval of the inspection report, the Owner will request a bid or bids from the Contractor to complete the recommended work items based on the lot pricing submitted by the Contractor under Work Package 4, Lot Pricing (Reference 12).

Where specified in the individual Work Package Specifications, the Contractor shall perform inspection of the equipment identified and prepare written reports to the Owner, recommending any repairs or maintenance necessary.

Inspection reports shall be delivered to the Owner no more than two (2) working days following an inspection and shall list the conditions of the components and recommendations to correct all identified deficiencies. The Contractor shall also provide guidance to the Contractor for any necessary testing of the equipment, and shall prepare written test reports to be approved by the Owner.

Safety The Contractor shall provide and maintain an adequate watchperson service for the entire vessel until redelivery, so as to protect the vessel from damage, fire, and pilferage.

The Contractor shall be held responsible for and make good at their expense any and all damage of whatever nature and/or loss to the vessel, and/or its machinery and/or its stores, outfit, furniture and furnishings, spare parts, tools, and removable equipment.

The Contractor shall provide and be solely responsible for all firefighting protection on board the vessel as may be required by various regulatory agencies, including the local fire department and Port Authority, during the contract performance period.

In cases where hot work is being performed on an interior boundary with flammable material present on the opposite site, a fire watch shall be maintained on the side of the boundary opposite the hotwork being performed. Additionally, if hotwork is being performed while other trades, crew, or other personnel are on board the vessel, a fire watch shall be maintained in way of the hot work being performed.

As a minimum, fire watches shall remain on station after completion of the hot work until the affected surface and adjacent materials have cooled significantly to preclude all opportunity for fire. The Contractor shall schedule fire watches and monitor the proper placement of the same. The Contractor’s failure to do so will result in the Owner halting all work, at the Contractor’s expense, until the Owner is satisfied that the fire watch requirement is met.

All fire watch personnel and equipment shall be provided by the Contractor. Vessel firefighting equipment shall not be used as fire watch equipment.

No burning or welding will be allowed in tanks, bilge pockets, or any other locations where petroleum products or explosive gases have been present, or which have been closed to the atmosphere until the area has been thoroughly cleaned and declared gas-free and safe for hot work and human occupancy by a certified marine chemist. The Contractor shall provide all work required to achieve the required degree of cleanliness, the services of the marine chemist, and the work, including personnel, required to keep the area safe while hot work is in progress. This work is considered incidental to other items of work and should be included in the Contractor's bid price.

The Contractor shall obtain and maintain up-to-date copies of the marine chemist’s test certificates depicting the current status of unsecured tanks and voids in accordance with OSHA regulations and as outlined herein. During all times that the tanks and voids are not bolted closed, the Contractor shall post copies of the test certificates and summary sheets certifying the status of all opened tanks and voids at the Engine Room and at each unsecured tank and void (individual certificate).

The Contractor shall protect dangerous areas, such as access openings in the deck, with suitable temporary hand rails, and take all necessary and reasonable safety precautions to prevent injury to any person who may enter the work area for any reason.

The name(s) and telephone number(s) of the Contractor’s safety representative(s) shall be provided to the Owner prior to beginning work, so as to provide 24-hour-per-day communication capability for safety-related issues. The name(s) and telephone number(s) of the Contractor’s safety representative(s) shall be posted aboard the vessel.

0. MATERIALS

All materials, machinery, and equipment provided by the Contractor shall be new, of current manufacture, and currently supported by spare parts readily available in the United States of America.

All materials, machinery, and equipment shall be of commercial marine quality, in full compliance with the specifications, and suitable for the service intended.

All gaskets, packing, and seals to machinery, equipment, piping systems, and manholes which are opened or dismantled during the course of the contracted work shall be renewed.

All bolt heads and nuts shall be of hexagonal standard type in accordance with ANSI standards unless otherwise specified. Lock nuts with nylon inserts shall be provided wherever bolted assemblies are used, except where the specifications or manufacturer requires other locking arrangements.

The Contractor shall be responsible for the protection, during the work and up to final acceptance by the Owner, of all material and equipment intended for use and installed aboard the vessel. This includes Contractor-furnished equipment, Owner-furnished equipment delivered to the Contractor, and existing vessel equipment removed by the Contractor that is to be re-installed on the vessel or delivered to the Owner.

The Owner may reject any material and/or equipment improperly stored or handled. The Contractor is responsible for inspection of equipment upon receipt at their facility.

Scrap and Salvage Unless otherwise stated below or in other specification sections, all material and equipment permanently removed shall become the property and responsibility of the Contractor. The Contractor shall properly dispose of all material and equipment in accordance with federal, state, and local government regulations.

HULL PROTECTION

Proper control of welding and grounding leads shall be maintained for the protection of the hull, systems, and appendages. Control shall be maintained during the contract period, whether waterborne or in dry dock. The following precautionary measures shall be, at a minimum, adhered to:

1. The vessel’s welding power source and ground cables shall not be used for another vessel or structure.

Welding and ground cables shall be properly insulated and not immersed in standing water.

Grounding lugs shall be tightly secured and contact surfaces periodically cleaned.

PROTECTION OF TEMPORARY OPENINGS

All temporary openings into the vessel shall be protected at all times. Tarps and temporary doors shall provide 100% protection of the openings (overhead and sides) except for the short durations when lifting operations are underway. Steel coamings shall be installed around each deck opening to prevent water intrusion into the space. Coamings shall be suitably sealed to prevent any leakage into the space.

PROTECTION OF SENSITIVE EQUIPMENT

The Contractor shall contain all welding, grinding, and burning operations with drop cloths and temporary sheet metal barriers to contain all dust and welding fumes, and prevent their spread into sensitive equipment.

0. TESTS AND TRIALS

Testing is required of all work performed and equipment installed and modified during the work pertaining to the structure, fittings, systems, and machinery in order to demonstrate satisfactory workmanship, application of equipment, and conformance to the specifications and regulatory body requirements.

The Contractor shall conduct testing in conformance with Contractor-developed test memorandums approved by the Owner and meeting test program requirements. Testing shall include: structural tests, piping tests, and machinery and equipment installation and operation tests for all installed, modified, or disturbed structure, machinery and equipment, systems, and materials.

Structural Tests Structural tests of all new and modified structure shall be conducted to demonstrate the watertightness or weathertightness, as applicable, of the boundaries. All testing shall be conducted to the satisfaction of the Owner and applicable regulatory bodies. All testing shall be prior to application or installation of deck covering, paint, etc.

All exterior surfaces in way of new or modified hull and deckhouse structure shall be hose-tested by directing a stream of fresh water at a pressure of not less than 30 psi from a 1-1/2" hose against the exterior surface of the structure. The stream shall be applied from a distance of 5' to 10' away from the surface being tested. Soap/vacuum box and air lance testing may be substituted as appropriate for this hose test.

For new interior structural modifications where hose tests are not practical, a soap/vacuum or air lance test shall be performed.

All welds shall be visually inspected by an AWS-certified weld inspector.

Piping Systems Tests All new, modified, and disturbed piping systems shall be hydrostatically and operationally tested.

Operational Tests Operational testing shall be performed in conformance with manufacturer recommendations and guidelines.

Final Cleaning Immediately prior to compartment closeout inspections, after all work has been completed in a space, the Contractor shall thoroughly clean the space and remove all temporary protections. Temporary ventilation protections must be replaced after compartment closeout unless otherwise approved by the Owner.

Cleaning shall include:

1. Wiping down bulkheads and working surfaces to remove oils, dust, dirt, and other debris from the work.

Vacuuming floors.

Washing carpeted floors, cleaning tools and chemicals to be approved by the Owner.

Mopping hard floor surfaces, cleaning tools and chemicals to be approved by the Owner.

Cleaning all light fixtures free of dust.

Washing of all windows / portlights.

END OF GROUP 0

HULL STRUCTURE

STRUCTURAL MODIFICATIONS

The Contractor’s hull structure scope of work is given in the M/V Thunderbird 2022 Shipyard Period Technical Specifications. Structural steel installed on the vessel shall be ASTM A36 (Reference 15).

Workmanship Care shall be taken to obtain good alignment of structural members, particularly where such members oppose each other on opposite sides of bulkheads or decks. In such cases, misalignment exceeding half the thickness of the thicker member shall be considered cause for rejection. Where discontinuities of structure are unavoidable, suitable brackets or other reinforcement shall be installed.

Within tanks, cofferdams, and peaks, and in any other spaces or areas that could trap liquids, adequate limbers shall be provided to ensure effective drainage. Similar limbers shall be cut in the framing members at the tops of tanks to prevent air pockets. Semi-circular “rat holes” are to be provided in framing members in way of passing welded seams or butts in the attached plating.

Where it is necessary to provide holes for passage of wiring, piping, or ductwork in structural members, compensation shall be provided where appropriate. In general, if such holes remove more than 30% of the depth of the web of a member or if they are unfavorably located, reinforcement will be required.

Wherever insert plates are used, rounded corners with a radius of not less than 3" are to be provided. Cuts in strength decks or the shell shall be radiused at the corners with a radius of 1/8 the transverse dimensions of the opening not to exceed 24". Trunks and coamings in general should be worked with corners rounded to a 3" radius. In longitudinal structural bulkheads and in deckhouse sides, the radii shall be 1/8 the vertical dimensions but not exceed 6". In main transverse structural bulkheads, the radii shall be equal to 1/20 of the vertical dimensions of the cut, but radii need not exceed 6" and shall not be less than 1".

Shims, liners, “dutchmen,” or “sleepers” shall not be used for the purpose of correcting improper fit.

Personnel welding qualifications, procedures, inspections, and documentation shall be in accordance with the USCG requirements.

The Contractor shall only use welders and welding operators pre-qualified by tests to the satisfaction of USCG, and at no expense to the Owner, for the type of material(s) and welding process(es) being used.

Structural welding shall be carried out in such sequence as to compensate for shrinkage as the work progresses, to prevent locked-in stresses, and to hold distortion to an acceptable minimum.

Steel to be welded shall be kept entirely free of paint or oil other than weld-through primers.

Weld inspections shall occur prior to painting the welds. Weld inspection shall be made by either visual, radiographic, ultrasonic, hydrostatic, air, or magnetic tests, separately or in combination. All weld inspection equipment and materials shall be provided by the Contractor. Weld inspections shall be performed by third party AWS Certified Welding Inspectors.

New welds shall be inspected as necessary to satisfy the regulatory bodies. Should the regulatory bodies or the Owner deem it necessary to increase the area of inspection because of the discovery of unsatisfactory welding, all such additional inspections shall be at the Contractor’s expense.

Continuous welding for sealing purposes shall be performed on all new structure and attachments where normally exposed to the weather.

END OF GROUP 1

PROPULSION PLANT

GENERAL

The Contractor’s propulsion plant scope of work is given in M/V Thunderbird 2022 Shipyard Period Technical Specifications.

END OF GROUP 2

ELECTRICAL

ELECTRICAL MODIFICATIONS

The Contractor’s scope of work includes no specific electrical work modifications but may affect existing cable routing in way of other scopes of work.

Materials Equipment requiring external wiring shall have terminal boards or blocks with solderless terminals to which all connections shall be made. An exception to this requirement is wire terminations to remote motor operator push-button stations which may be made directly to screw-type terminal connections on the operators and pilot lights.

Electrical enclosures shall be drip-proof as a minimum and shall not have knockout plugs. In engineering spaces enclosures shall be NEMA 12 as a minimum. In damp, wet, or exterior locations, enclosures rated NEMA 4X shall be installed. Exterior enclosures shall also meet International Electrotechnical Commission (IEC) IP55 requirements.

New distribution panel enclosures shall be drip proof, NEMA 12 as a minimum, and NEMA 4X if exposed to the weather. Connection boxes, outlet boxes, junction boxes, light fixtures, and similar wiring fittings and fixtures installed in locations exposed to weather, condensation, or excessive dampness shall, unless otherwise specified or shown, be made of brass or bronze.

Cabling Many existing cables will be affected by the work to be performed. In all cases, where an existing cable is affected, it shall be insulation resistance checked (meggered) prior to reconnection to any equipment. Insulation resistance for all new and reused cable shall be in accordance with IEEE-45 (2017).

Cables shall be run in existing and new wireways by the most direct routing as possible and consistent with practical wireway groupings, hazardous locations, etc. Where possible, wireways shall be run overhead and concealed in bulkheads or overhead spaces that are lined. The cables shall be secured to the cable hangers with stainless steel banding. When pulling cabling, manufacturer’s maximum force limitations shall be adhered to. For example, CAT6 cabling shall not be pulled with a force exceeding 25 lb maximum.

Where existing cables are planned to be reused, the cable length may require extension. Any such extension shall be made only with cable of like size and type. The terminations shall be made within watertight electrical junction boxes. The junction boxes shall be hidden behind joiner/ceiling panels and provision shall be made for access with labels added to the joiner/ceiling panels to indicate the location of the junction boxes. The Contractor shall replace those cables where the overall length is less than 50'.

Cables shall be run directly from electrical equipment to the distribution panel branch circuit breaker, controller or as otherwise provided in the specifications.

END OF GROUP 3

COMMUNICATIONS, NAVIGATION, AND SHIP CONTROL

No items.

END OF GROUP 4

MACHINERY

GENERAL

The Contractor’s machinery scope of work is given in M/V Thunderbird 2022 Shipyard Period Technical Specifications.

PIPING MODIFICATIONS

The following general requirements shall be applicable to all the piping system modifications described in these specifications.

General All new and modified piping systems shall comply with USCG regulations. All valves, flanges, and fittings shall be supplied by manufacturers acceptable to USCG.

Piping systems and related material shall be designed, furnished, and installed as necessary to ensure complete and efficient operation of all systems, components, and machinery under all conditions of service. Where piping arrangement and detail drawings are provided it is anticipated that minor adjustments will be required during production design. Adjustments shall be the responsibility of the Contractor.

Except where open ceiling systems are intended, all piping in accommodation spaces shall be concealed behind ceiling panels and sheathing, except where exposed for purposes of connecting piping to fixtures. In order to maintain maximum headroom, all piping shall be kept behind framing and as close as practical to deck beams, bulkheads, and the underside of decks. Piping may pierce girders, provided approved compensation is made at the penetration.

All piping subject to mechanical injury shall be adequately protected. All guards shall be bolted in place so that they may be removed for repairs to piping.

Welded joints shall be incorporated in the design to the maximum extent consistent with maintenance requirements of system components. Where flanged joints are identified in high pressure piping, safety shields shall be installed if leakage from the joint could be hazardous.

Where piping is connected to machinery and equipment, provision shall be made so that stresses due to expansion and contraction of piping are not transmitted to the machinery or equipment.

Piping Installation All piping shall fit without springing or forcing into place. Flange faces shall fit parallel and concentric before bolting.

New overboard discharge connections shall be made of carbon steel pipe and sized in accordance with ASTM F994. Insert plates shall be Type IV and be made of material with physical properties equal to or better than the reinforced shell plate.

Where the penetration of a watertight bulkhead or deck is required, the piping shall have an extra-heavy doubler sleeve or collar (in accordance with ASTM F682, Standard Specification for Wrought Carbon Steel Sleeve-Type Pipe Couplings, Reference 5) welded into the deck or bulkhead, to ensure that watertight integrity is maintained. In no case shall the bulkhead or deck plate be used to form a part of a joint or piping system.

To prevent damage to piping and joints at bulkheads and decks, bends or fittings for expansion of piping shall be provided to compensate for movement due to the working of the vessel’s structure.

Piping shall be supported by hangers suitable for the material and service in accordance with ASTM F708, Standard Practice for Design and Installation of Rigid Pipe Hangers (Reference 6), supplemented by MSS SP-69, Pipe Hangers and Supports - Selection and Application (Reference 7). Hangers shall be welded to basic structure such as beams, frames, bulkhead stiffeners, or plate that is opposite support structure. Hangers for nonferrous pipe or tube and for hydraulic systems shall be synthetic rubber lined.

To accomplish change in a direction, machine bending of pipe to a radius of five times the nominal pipe diameter for pipe 2" NPS and below, in lieu of elbows, is preferred. Machine bending of tubing shall be to a radius of three times the nominal diameter.

Unions are not permitted in piping that is behind linings, false ceilings, or in other inaccessible locations.

Connections to pumps, tanks, etc., above 2" nominal diameter shall be flanged. Connections of 2" nominal diameter and below shall be threaded with sufficient unions to permit removal of equipment. Where 150 lb steel flanges mate up to valves or equipment with flat face flanges, the steel flanges shall be flat faced.

All piping systems shall be fitted with low point drains. Exterior piping shall be fitted with shut-off valves and drains for freeze protection. Conversely, unavoidable high points shall be provided with vent fittings for air removal.

Where screwed plugs are incorporated, they shall not be covered by insulation or linings, and they shall be bronze for either ferrous or nonferrous materials.

Flexible piping connections shall be made with standard manufacturer-approved metallic or non-metallic hose with standard end fittings. (Contractor-fabricated expansion joints are not acceptable.) Flexible connections shall not be used in any piping system to compensate for offsets and/or misalignments caused by substandard pipe fitting. In those systems employing “Garlock EZ-FLO” flexible connections, the Contractor shall use, for each line size, the same size connector in every system requiring such connectors. Flexible connections utilized shall have a minimum service life of five (5) years after installation.

Cleaning and Flushing General All piping, piping appurtenances and applicable equipment shall be thoroughly cleaned after fabrication and prior to shipboard installation. After complete shipboard installation each system shall be thoroughly cleaned and flushed of all foreign matter with the applicable system’s medium, or an approved substitute.

System flushing shall be conducted at the applicable system’s maximum operating pressure and above normal line velocity. Line vibrators, of the temporary in-line and/or portable hand types, shall be employed. However, prior to flushing operations, such units as heat exchangers and control valves having in-line mechanisms capable of trapping, or affected by the carryover of foreign matter, shall either be removed or blanked-off and bypassed.

Fuel Oil, Lube Oil, and Hydraulic Piping Fuel oil, lube oil, and hydraulic oil piping shall be cleaned after fabrication or assembly and before installation by pickling in hot acid, after which the piping shall be washed, acid neutralized, washed again, dried, and coated with oil to the satisfaction of the Owner. After installation is complete, the entire system shall be cleaned by continuously circulating hot oil at or above design velocity at not less than 140°F, using temporary strainers and filters until a clean system is obtained. Flushing oil shall be removed and system flooded again using the normal system fluid, placing a lint-free cloth bag over the temporary strainer, and flushing for at least one hour, or until a clean bag is obtained. After cleaning, the Contractor shall drain the system and refill with new, normal system fluid. Line vibrators, of the temporary in-line and/or portable hand types, shall be employed during the installation cleaning process. Alternative flushing procedures may be proposed by the Contractor for approval by Owner.

END OF GROUP 5

OUTFITTING

GENERAL

The Contractor’s scope of work is given in M/V Thunderbird 2022 Shipyard Period Technical Specifications.

0. PAINTING

All coating system and surface preparation requirements are provided in the Paint Specification.

END OF GROUP 6

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