Amendment 0006 20220906.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

Answ ers to RFI's 107-112 (RFI Group 6) Revised Sections C004, C508, C517, C655, C765, and E04.

Corrected sections will be included in a "cut-and-paste" format. The affected sections will be corrected in the final award. All other terms, conditions, specifications and requirements remain the same.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 22

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912BU22R0045

X 9B. DATED (SEE ITEM 11)

26-May-2022

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO.

5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

06-Sep-2022

CODE

US ARMY ENGINEER DISTRICT, PHILADELPHIA

CONTRACTING DIVISION

WANAMAKER BUILDING

100 PENN SQUARE EAST

PHILADELPHIA PA 19107-3390

W912BU 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912BU22R0045

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

AMENDMENT 6

RFI Group 6

92. We cannot locate Section F in the RFP, which states the delivery location. Can you please clarify the delivery location required in CLIN 0001AD

a. USACE Response: Delivery location is included in Contract Paragraph F03 on page 357 of the original solicitation.

93. On page 173, in section C517 - JETTING AND HOPPER FLUSHING SYSTEMS, the specification states: "A Hopper Flushing System shall also be provided. The hopper flushing system shall consist of a hopper flushing pump and piping from the pump to the hopper. The hopper flushing system is intended to add water to the hopper, during hopper pump out such that sufficient head on the dredge pumps is maintained and cavitation in the pumps is avoided."

a. As there is a question with regards to locating nozzles within the hopper, is the intention of the flushing system to contribute directly to the fluidizing of the soil mixture within the hopper? In order for this action to be efficient, is it expected that the flushing water be directed in close vicinity to each suction inlet of the hopper collection system? Alternatively, the flushing water could be introduced into the hopper in a "rainbow" fashion, spraying on top of the soil mixture, or the flushing water could be introduced into the hopper near each fill point of the Hopper Distribution System?

b. Please provide some clarification as to means of introducing the flushing water into the hopper.

c. USACE Response: The flushing system is intended for fluidization of the material in the hopper and preclude bridging of material being bottom dumped or pumped out. The Government does not believe that “rainbowing” of the flushing system would satisfy this requirement.

94. Section E04 requires 3 office trailers be provided to house seven (7) personnel. Would it be acceptable to provide 1 single trailer with 3 x trailers adjoined, with adequate office space for the seven (7) personnel to have each an individual office. Also please confirm that each of the seven (7) personnel are to have their own office.

a. USACE Response: A single trailer with three (3) trailers adjoined would satisfy the intent of the Contract Paragraph. Individual offices are not required per these requirements. Please see revised Contract Paragraph E04.

95. On page 344 of the RFP, it is noted that GFE radio equipment will be tested by the USACE. "The Government will coordinate the required personnel for certification of DQM items and GFE radio equipment.". Can the USACE confirm this is the Iridium Satellite telephone system with data and PABX interfaces noted on page 315. Can the USACE provide the GFI associated with this this equipment or if off the shelf, provide make and model that will be provided? Please confirm that the Iridium system is the only GFE the USACE intends to provide to the contractor for installation during construction.

a. USACE Response: The Government will provide two (2) GFE items, as described in Contract Paragraph C765, pages 314 and 315 of the original solicitation. These items are the marine VSAT system and the IRIDIUM Satellite telephone system. Please see revised Contract Paragraph C765 for clarification on Government responsibility and correction to administrative error in numbering of sub-paragraphs.

96. On page 173, in section C517 "JETTING AND HOPPER FLUSHING SYSTEMS", the following is noted:

a. "In the hopper, jetting shall be used:

i. For hopper pump out - to fluidize and dilute the soil mixture in the hopper for efficient flow through the hopper collection system to the dredge pumps.

ii. For hopper bottom door discharge - to fluidize and dilute the soil mixture in the hopper for efficient flow through the hopper bottom dump doors."

b. Further in section C517, page 174, the specification states:

i. "The hopper jetting system shall dilute the load in front of the suction inlet of the hopper collection system sufficiently such that material can be hydraulically transported."

c. However, also on page 174, the specification declares:

i. "The jetting piping in the hopper shall be run horizontally at the same level with no slope, dips, or low points."

d. To efficiently fluidize the soil mixture throughout the hopper and in front of each suction inlet, jetwater nozzles must be distributed both longitudinally and vertically within the hopper, with some in close vicinity to the suction inlets. In order for jetting water to reach those nozzles, piping would run at various elevations, with some nozzles lower than others.

e. Additionally, on page 174, the specification states:

i. "The hopper jetting system shall be divided into multiple sections, with each section of jetting pipe corresponding to a section of the hopper. Each section of the hopper jetting system shall be controlled separately and per Contract Paragraph C524."

f. To simplify the jetting water system controls, each section would be controlled by a single valve. To effectively distribute the jetting water to both sides of each section of the hopper, piping would lead under the hopper, from a main header to the opposite side.

g. The requirement for the jetting piping to be horizontal will lead to complications and increased cost. Therefore, we request the USACE to strike the requirement for the piping to be horizontal and replace with an alternate requirement for a means for the jetting piping to be able to drain at all low points within the system.

h. USACE Response: Please see revised Contract Paragraph C517.

97. Page 237 of the solicitation within Section C655 Hydraulic System, includes, "If hydraulic powered winches are selected for the dredging system, isolation valve(s) shall be fitted between the main system and the power pack and the hydraulically driven dredge pipe winches, which shall allow for operation of the winches without pressurizing the whole system." This suggests the USACE would accept electric gantry winches. Looking for other guidance within the solicitation. Earlier in Section C655, a hydraulic system consumer listed on page 235 lists "Gantry winches, further description in Contract Paragraph C508."

a. Section C508 - Dragarm Handling System does not list any requirement for the gantry winches to be hydraulically controlled. However, there is a deliverable entitled, 849-C508-05 Winches Hydraulic Diagram. Would the USACE accept electrically powered and controlled gantry winches for the 3 winches listed:

draghead gantry winch, intermediate gantry winch and trunnion gantry? Should electric winches be acceptable, we assume the deliverable would not longer be applicable.

b. USACE Response: This is correct and please see Contract Paragraphs C508 and C655 to correct any discrepancies. Electric gantry winches are acceptable for this solicitation. Note that this does not modify the requirement for gantry cylinders to be hydraulically operated.

C004 CLASSIFICATION AND CERTIFICATION

GENERAL DESCRIPTION

The Contractor shall be responsible for preparing all necessary drawings and calculations, obtaining necessary regulatory body reviews and approvals, obtaining necessary inspections and surveys during construction and for the classing and certification of the vessel as follows:

REQUIREMENTS

ABS CLASSIFICATION

a. ABS Rules for Building and Classing Marine Vessels The vessel shall be designed, built and inspected and tested in accordance with the latest version of the ABS Rules and shall be Classed as follows: “Maltese Cross ✠A-1Ⓔ, Maltese Cross ✠AMS, ACCU, Unrestricted Service with a Vessel Description of Hopper Dredger.

b. ABS Guide for Crew Habitability on Workboats The vessel shall be designed and built in accordance with the ABS Guide for Crew Habitability on Workboats, Habitability (HAB(WB)) and shall receive such notation upon completion of all tests and trials.

c. ABS Rules for Survey After Construction – Underwater Inspections in Lieu of Drydocking Surveys The vessel shall be designed and built in accordance with the requirements and recommendations in the ABS Rules for Survey After Construction – Underwater Inspections in Lieu of Drydocking (UWILD) Surveys (Part 7, Appendix 1). This shall include submission of all required plans and data to ABS for review and approval, and coordination with ABS to inspect the vessel prior to launch. The Contractor shall obtain the UWILD notation from ABS for the vessel and shall ensure compliance with ABS requirements for this notation.

d. ABS Guide for Certification of Lifting Appliances Cranes and lifting equipment on the vessel shall be included in the ABS Register of Lifting Appliances under this Guide with the additional class notation CRC (OC, SP). Note that this does not include dragarm handling system.

e. International Convention on Load Lines (see Contract Paragraph C140 for additional details) The Contractor shall employ ABS to survey the vessel for compliance with the International Load Lines Convention of 1966, as amended. The Contractor shall employ ABS to review the vessel for compliance with the U. S. Coast Guard’s criteria for exemption or equivalency for reduced freeboard under DR-68, as allowed by Federal Register/Vol 75, No 196/Tuesday, October 12, 2010/Notices, and to issue the appropriate Certifications on behalf of the U. S. Coast Guard.

f. International Convention for the Safety of Life at Sea (SOLAS) The Contractor shall employ ABS to survey the vessel for compliance with the International Convention for the Safety of Life at Sea 1974 as amended and to issue the appropriate Certifications.

g. International Convention on Tonnage Measurements of Ships The Contractor shall employ ABS to survey the vessel for compliance with the International Convention on Tonnage Measurement 1969 and to issue the appropriate Certificate of Admeasurement.

The recommended ABS point of contact is: Mr. Bob Smith, who can be reached by phone, email or mail, at: (703) 519-9970, RSmith@eagle.org, or 1525 Wilson Blvd, Suite 625, Arlington, VA 22209.

The Contractor shall be responsible for all costs associated with applications, plan submittals, and inspections required to obtain such certification\documentation. When steel construction commences, the Contractor shall coordinate with ABS to ensure the frequency of onsite inspections are not less than once every two weeks. See Contract Paragraph C040 Scope of Work for details on Contract Drawings and the level of effort required by the Contractor.

If the Contractor intends to launch, test, operate, or tow the vessel “out of class”, the Contractor must specifically advise ABS of such intent and incorporate any and all modifications required by that agency for such operation at no additional cost to the Government and at no additional contract time. Any such modifications which, in the opinion of the COR, affect the arrangements, operability, or suitability of the vessel shall be removed from the vessel by the Contractor at no additional cost or time and the vessel returned to new condition prior to Final Acceptance. See Contract Paragraph C040 Scope of Work for details regarding deviations to the contract design.

CERTIFICATIONS, INSPECTIONS AND LICENSES

The Contractor shall be responsible for obtaining all necessary regulatory body reviews and approvals, obtaining necessary inspections, surveys during construction, and for obtaining, in addition to the following, all necessary certificates and licenses required to sail between all U. S.

Ports (CONUS and OCONUS), the Panama Canal, and U. S. Territories:

a. U.S. Coast Guard Certificate of Inspection (COI) under 46 CFR Subchapter I – Cargo and Miscellaneous Vessels The Contractor shall employ ABS to review the vessel design and construction on behalf of the U. S. Coast Guard for compliance with Subchapter I and to issue an official Hull Number and the COI. Along with the ABS ACCU notation described above, the vessel shall also satisfy the requirements for a USCG periodically unattended machinery space, and the vessel’s COI/manning requirements should reflect such.

b. U. S. Coast Guard Ballast Water Management System under 33 CFR Part 151, Subpart D, Waters of the U.S.

If the vessel is to take on or discharge ballast water during operations, then an approved Ballast Water Management System (BWMS) shall be implemented. If ballast water treatment equipment is installed, then the Contractor shall provide certification that it is in compliance with 46 CFR Part 162.

c. Certification of United States Built, 46 CFR Part 67, Subpart F The Contractor is to provide a Master Carpenter’s Certificate and Builder’s certification to prove the vessel was United States Built in accordance with Part 67.97 and that it qualifies to operate under the Jones Act.

d. API Certified Hopper Capacity Tables The Contractor shall provide API certified total and incremental tank capacity tables compiled from field data taken from the hopper of the completed vessel by API certified surveyors.

The tank capacity tables shall include a specific entry providing fill level at 6000 Cubic Yard Capacity.

FCC Cargo Ship Radio Authorization The Contractor shall work with the COR to obtain the U. S. Army Ship Radio Authorization.

e. GMDSS Certification for Communication Equipment The contractor shall provide certification that communication equipment is in compliance with SOLAS mandated GMDSS for Sea Areas A1, A2 and A3.

Based upon 46 USC 3316 (b) & (c), the USCG Alternate Compliance Program authorizes entities other than ABS to

1) Review and approve plans required for issuing a certificate of inspection required by this part;

2) Conduct inspections and examinations; and

3) Issue a certificate of inspection required by this part and other related documents.

VESSEL OWNER AND ADDRESS

For the ABS certificate of classification and other certifications and the U.S. Coast Guard COI, the owner shall be listed as “U.S. Army Corps of Engineers, Philadelphia District”. The owner’s address of record shall be listed as:

US Army Corps of Engineers – PHILADELPHIA District Fort Mifflin Project Office

6400 Hog Island Road Philadelphia, PA 19153

ABS ENGINEERING MANAGER ACCESS AND DISCLOSURE

The Marine Design Center (CEMDC) will be the “Owner’s Representative” on this project. All correspondence with ABS shall be made available to the COR. In order to facilitate the communication process and reduce the paperwork burden on all parties, the Contractor and all sub-contractors shall utilize the ABS Eagle Construct Engineering Manager Portal (02E) for all drawing submittals and correspondence. The Contractor and all sub-contractors shall make the necessary arrangements with ABS to ensure that the Marine Design Center is granted the following Oversight Permissions for this Contract:

View project and drawing status View comments View transmittals Download approved drawings and review letters E-Mail notification of approval E-Mail notification of transmittal Status Disclaimer The Marine Design Center’s ID/WCN number is 615255 and the point of contact with respect to the ABS Coordination/Engineering Manager Portal (02E) is Mr. Tim Keyser, Timothy.J.Keyser@usace.army.mil, phone: (215) 656-6171.

The Contractor shall ensure that, as a part of its contract with ABS, the Contractor authorizes ABS to disclose to and discuss with the Army Corps of Engineers any Rule or certification criteria issues, design assumptions and their impact on classification and certification, and any other technical considerations on which classification is to be based or which may affect future classification or certification of the vessel.

The Contractor shall authorize ABS to provide the Army Corps of Engineers at its request with a copy of all correspondence related to classification, statutory certification, or other compliance verification for which ABS is responsible as it is promulgated and initially distributed. This is to include drawings and other engineering work requiring ABS approval as well as correspondence generated which relates to such approvals, including all such correspondence dealing with vendors.

In addition, the Contractor shall copy the Army Corps of Engineers with correspondence regarding classification, statutory certification, and other compliance verification for which ABS is responsible. The Contractor shall also authorize ABS to establish and maintain contact with other certification, verification, and compliance agents involved on the vessel being built.

Upon request by the COR, the Contractor shall request ABS to furnish the Government with the project comment list. The list shall include open and closed technical and surveyor comments.

The surveyor comments shall not only include comments generated during the drawing review process, but also comments generated by the ABS Surveyor during construction inspections.

The comment list shall be sent directly from ABS to the COR via email as a .pdf file.

At the completion of the ABS review process, the Contractor shall download all ABS “Eagle Stamped” drawings and provide them in electronic media to the Government in .pdf format.

SPECIFIC REQUIREMENTS

None.

SPECIAL FEATURES

None.

DELIVERABLES

ABS Class Documentation Load Line Certificate Certificate of Admeasurement Certificate of Inspection Official Hull Identification Number BWTS Certificate of Approval Master Carpenter’s Certificate Builder’s Certification as United States Built API Certified Hopper Capacity Tables Certification that communications equipment complies with SOLAS

STANDARDS

See Contract Paragraph C003.

C508 DRAGARM HANDLING SYSTEM

The vessel shall be provided with a dragarm handling system to position the entire dragarm from transit position to dredging position. Each dragarm handling system shall consist of a draghead, intermediate and trunnion gantries, corresponding winches, and a swell compensator. The dragarm, draghead, and swell compensator are described in Contract Paragraphs C510, C511, and C522, respectively.

REQUIREMENTS

The dragarm shall be hoisted and lowered by winches via three gantries, one located near the draghead (draghead gantry), one near the gimbal joint (intermediate gantry) and one near the trunnion (trunnion gantry).

The gantries and winches shall allow for hoisting of the trailing suction pipe without contacting the hull with a vessel list angle up to5 degrees Port or Starboard.

The dragarm handling system shall have the minimal required number of moving parts as practical.

Gantries and winches shall be of adequate strength, torque and power to hoist the dragarm when it is in the outboard position and to move the dragarm from the outboard to the inboard position.

Winch hoisting capacity shall be determined as follows:

a. Load Case 1 - Nominal pull: trailing suction pipe horizontal above the water, jet pipe filled with water, taking into account the sheave bearing efficiency of the hoisting system. For the trunnion winch, an additional safety factor of at least 1.2 for the friction of the sliding piece and the hull shall be applied.

b. Load Case 2 - Maximum Pull: trailing suction pipe above the water filled with dredged material, draghead filled with clay and jet pipe filled with water taking into account the sheave bearing efficiency of the hoisting system, or by multiplying the nominal pull (from Load Case 1) by a safety factor of at least 2.0, whichever is the greatest.

The structural strength of the gantries and their foundations shall be based on the maximum hoisting capacity of the relevant winch, taking into account a maximum allowable stress of 65% of the yield stress of the steel applied. The Contractor shall develop 849-C508-11 GANTRIES CALCULATION REPORT during phase II of the Contract and submit to COR for review and approval.

There shall be sufficient space around the draghead, when stowed on deck, for maintenance and removing/adjusting the TED and visor. Maintenance and removing/adjusting the TED and visor shall be possible in a safe manner during transit with the dragarms stowed in the saddles.

Gantries and winches shall be controlled from the dredging control desk, per Contract Paragraph C524, and shall also have local controls.

The Contractor shall develop 849-C508-01 DRAGARM HANDLING ARRANGEMENT during phase II of the Contract and submit to COR for review and approval.

SPECIFIC REQUIREMENTS

Gantries Inboard and outboard movement of the drag arm shall be controlled by a hydraulic cylinder at each gantry. At the end of the stroke the hydraulic cylinder shall be fitted with hydraulic buffers to gradually lower the speed of the cylinder. The hydraulic cylinder shall be linked to the gantry and to the vessel by means of spherical plain bearings.

The intermediate and draghead gantries shall be of the same design, each adapted to the specific load and outreach required. The draghead and intermediate gantries shall include saddles where the dragarm can be self-stowed. The gantries shall be adequately protected with fenders to prevent damage to and from dragarm, as required in Contract Paragraph C410.

The trunnion gantry shall be designed so that the guiding track of the hull and the trunnion for lowering the sliding piece to position are easily aligned.

Winches The dragarm handling system shall contain winches suitable for hoisting the dragarm and draghead. Winches may be either hydraulically or electrically controlled. If the gantry winches are electrically controlled then the drawing 849-C508-05 may be removed, however details for the electrically controlled gantry winches shall be included in electrical drawings as applicable.

Winches shall be the same make and model where practicable.

The winches shall be complete with a drum brake and a motor brake. The drum brakes shall be arranged to automatically arrest the rotation of the drums upon loss of power. The motor brakes shall be designed with a service factor of 1.5.

In addition to above stated service factors, the construction and installation of winches shall meet ASME B30.7 – Winches.

The winch shall have anti-friction type roller bearings and a complete, self-contained lubrication system for the bearings and the gears.

Winch wire shall be designed with a factor of safety as specified by ASME B30.7 - Winches.

Pull of the winch shall be in accordance with the requirements described above. The drum capacity shall be sufficient to accommodate the hoisting wire in one layer with additional fastening and spare windings. The drums shall be grooved drums to support the wire rope. The wire speed shall be calculated to for hoisting the suction pipe from maximum dredging depth to the inboard position in 5 minutes.

The Contractor shall provide the COR with a "Certificate of Examination and Test of Wire Rope Before Being Taken into Use" (U.S. Department of Labor - Occupational Safety and Health Administration Form No. 5) for each continuous run of rope installed on the winches. The certification shall be performed to the requirements of 29 CFR, part 1919 and be in accordance with the requirements of 29 CFR 1918. Certifications shall be performed to verify that wire rope meets calculated required breaking strength, and also meets ABS required minimum breaking strength where applicable.

Sheaves Sheaves shall be provided as required to suit the specifications of the wire manufacturer according to the allowed wire rope bending radius. Sheave diameter shall be at least 20 times wire diameter and sheaves shall be identical.

All sheaves shall have roller bearings. Greasing of bearings shall be accomplished from no more than two places per gantry by central nipple blocks via stainless steel grease pipelines.

Bushings and bearings shall have adequate sealing against seawater and dirt and shall be capable of being greased from an easily accessible position.

Gantry and Winch Control The operation of the gantries and winches shall be controlled remotely from the dredge operator console as further described in Contract Paragraph C524, and locally.

An emergency stop is to be placed near each winch.

Gantry and winch control shall be provided with the following features:

a. A limit switch that will shut down the winch drive when the suction pipeline is at its highest position. After the switch stops the drive, it shall be possible to reverse the winch and lower the suction pipeline without manual reset.

b. A sensor that provides notification at the Dredge operator console, that the dragarm is resting in the stowage support saddles on deck.

c. A slack line sensor to stop line payout when a slack line condition is detected.

d. A sensor and control to stop the winch when amount of safety wraps is reached.

e. Sensors to provide required dragarm position data per Contract Paragraph C524.

f. Angle of gantries

g. Position of trunnion

SPECIAL FEATURES

In case of hoisting wire breakage, means of emergency retrieval shall be provided with the use of an emergency hoisting wire in way of the draghead gantry.

DELIVERABLES

849-C508-01 DRAGARM HANDLING ARRANGEMENT

849-C508-02 WINCHES ARRANGEMENT DRAWING

849-C508-03 GEARBOXES ARRANGEMENT DRAWING

849-C508-04 GEARBOXES ASSEMBLY DRAWING, including parts list

849-C508-05 WINCHES HYDRAULIC DIAGRAM

849-C508-06 GEARBOX CALCULATIONS

849-C508-07 WINCHES CALCULATION REPORT

849-C508-08 SLIDING PIECE ASSEMBLY DRAWING, including parts list

849-C508-09 SUCTION TUBE HOISTING ARRANGEMENT

849- C508-10 GANTRIES ARRANGEMENT

849- C508-11 GANTRIES CALCULATION REPORT

849- C508-12 DRAG HEAD GANTRY ASSEMBLY, including parts list

849- C508-13 INTERMEDIATE GANTRY ARRANGEMENT DRAWING

849- C508-14 INTERMEDIATE GANTRY ASSEMBLY, including parts list

849- C508-15 TRUNNION GANTRY ARRANGEMENT DRAWING

849- C508-16 TRUNNION GANTRY ASSEMBLY, including parts list 849- C508-17 GANTRY SHEAVES ASSEMBLY DRAWING, including part list

849- C508-18 GANTRY CYLINDERS ARRANGEMENT DRAWING

849- C508-19 GANTRY CYLINDERS ASSEMBLY DRAWING, including parts list

849- C508-20 GANTRY CYLINDERS HYDRAULIC DIAGRAM

STANDARDS

29 CFR Part 1919, Gear Certification 29 CFR Part 1918, Longshoring ASME B30.7-2016, Winches

C517 JETTING AND HOPPER FLUSHING SYSTEMS

The jetting system consists of the piping running from (a) the jetting pumps (described in Contract Paragraph C518) to the draghead and (b) into the hopper providing the required jetting water for the hopper collection system as described in Contract Paragraph C520.

On the draghead, jetting shall be used to erode and fluidize the waterway bottom material to maximize dredging soil water slurry density.

In the hopper, jetting shall be used:

• For hopper pump out - to fluidize and dilute the soil mixture in the hopper for efficient flow through the hopper collection system to the dredge pumps.

• For hopper bottom door discharge - to fluidize and dilute the soil mixture in the hopper for efficient flow through the hopper bottom dump doors.

A Hopper Flushing System shall also be provided. The hopper flushing system shall consist of a hopper flushing pump and piping from the pump to the hopper. The hopper flushing system is intended to add water to the hopper, during hopper pump out such that sufficient head on the dredge pumps is maintained and cavitation in the pumps is avoided.

REQUIREMENTS

The jetting system shall consist of two (2) jetting pumps, each with a suction inlet sea chest close to the pump. The sea chest and pump inlet shall be separated by a straight run of pipe of sufficient distance to avoid negative impacts on pump performance.

For the water supply to the draghead nozzles, the jetting pumps shall work in series.

The jetting system to the draghead shall consist of a separate pipe running along the dredge pipe with flexible parts where necessary.

For the water supply to the hopper for mobilizing and diluting the hopper load, the pumps shall work in parallel.

During unloading by the hopper pump out, the dilution shall be such that the maximum dredged material density can be pumped while minimizing the unloading time.

The hopper jetting system shall be divided into multiple sections, with each section of jetting pipe corresponding to a section of the hopper. Each section of the hopper jetting system shall be controlled separately and per Contract Paragraph C524.

All valves in the jetting system shall be remote controlled and monitored at the dredge operator console.

A hopper flushing system, consisting of an independent hopper flushing pump and associated piping, shall be installed to avoid cavitation at the dredge pumps during unloading.

The Contractor shall develop 849-C517-01 JETTING WATER DIAGRAM, 849-C517-02

JETTING WATER ARRANGEMENT TO DRAGARM, 849-C517-03 JETTING WATER

ARRANGEMENT TO HOPPER, 849-C517-04 JETTING SYSTEM CALCULATIONS, 849-

C517-05 HOPPER FLUSHING SYSTEM ARRANGEMENT, and 849-C517-06 HOPPER FLUSHING SYSTEM CALCULATIONS and submit during Phase II of the Contract to COR for review and approval. The diagrams and arrangements shall include a Bill of Material including call-out of valves, pipe sizes, material, diameter, angle, bend radius and wall thickness.

SPECIFIC REQUIREMENTS

The jetting system shall have the capacity to dilute at least 2 sections of the hopper simultaneously. Diluting capacity shall be shown in 849-C517-04 JETTING SYSTEM

CALCULATION.

The hopper jetting system shall dilute the load in front of the suction inlet of the hopper collection system sufficiently such that material can be hydraulically transported.

SPECIAL FEATURES

Each section of the jetting system shall be fitted with a remotely controlled valve.

The jetting piping in the hopper shall be run horizontally at the same level with no slope, dips, or low points.

The material of the jetting system piping shall be selected to reduce maintenance of the system.

DELIVERABLES

849-C517-01 JETTING WATER DIAGRAM

849-C517-02 JETTING WATER ARRANGEMENT TO DRAGARM, including heel jet spacing and diameters

849-C517-03 JETTING WATER ARRANGEMENT TO HOPPER

849-C517-04 JETTING SYSTEM CALCULATION

849-C517-05 HOPPER FLUSHING SYSTEM ARRANGEMENT

849-C517-06 HOPPER FLUSHING SYSTEM CALCULATIONS

STANDARDS

See Contract Paragraph C003.

C655 HYDRAULIC SYSTEM

None.

REQUIREMENTS

The Contractor shall design and install a central constant pressure hydraulic system. The system shall be designed and installed to meet all requirements of ABS MVR and 46 CFR Subchapter F.

The hydraulic system shall consist of a hydraulic unit which delivers hydraulic oil to a ring main line that runs throughout the vessel. The ring main shall have branches for each of the consumers on board.

The central hydraulic system shall service at least the following consumers:

a. Gantries, further described in Contract Paragraph C508

b. Hopper Door System, further described in Contract Paragraph C514

c. Overflow(s), further described in Contract Paragraph C516

d. Gantry winches (if applicable), further described in Contract Paragraph C508

e. Bow Connection, further described in Contract Paragraph C523

f. Gate valves, further described in C525 A separate hydraulic system shall be provided for the draghead-mounted hydraulics as described in Contract Paragraph C511.

Hydraulic blocks and valves to operate consumers shall be located as close as possible to the consumer, easily accessible, and either below deck or in a watertight enclosure.

The hydraulic system shall be sized to meet the operational requirements specified by the respective equipment manufacturers.

In accordance with EPA rules, EAL hydraulic fluids shall be used for all oil-to-sea interfaces.

All hydraulic piping, fittings and valves shall be of stainless steel.

All hydraulic oils used or supplied by any manufacturer shall comply with the cleanliness code ISO 4406 class 17/15/12 All hydraulic piping systems are to be cleaned and flushed to the satisfaction of the COR and ABS, and until a cleanliness level is achieved in line with ISO 4406 class 17/15/12 prior to attaching to any hydraulic equipment, filling with hydraulic oil or use.

The Contractor shall develop 849-C655-01 HYDRAULIC SYSTEM DESCRIPTION and submit it to the COR and ABS during Phase II of the Contract for review and approval. The system description shall explain the function of system for the different items being controlled. The description shall include the movements and forces (static and dynamic), simultaneity, required actuation time, etc. The Description should also address the intended redundancy of the system.

The Contractor shall develop 849-C655-02 HYDRAULIC SYSTEM FUNCTIONAL BLOCK DIAGRAM and submit it to the COR and ABS during Phase II of the Contract for review and approval. The block diagram shall show the system layout at the functional block schema level, shall indicate how system is divided and where each section is located. The system then consists of several functional blocks (e.g. bottom doors, suction arm movements, etc.);

The Contractor shall develop 849-C655-03 HYDRAULIC SYSTEM FUNCTIONAL DESCRIPTION and submit it to the COR and ABS during Phase II of the Contract for review and approval. Functional Description of the different functional blocks shall include the associated functions, behavior at startup, behavior at failure and transitions between different functions. This will be the functional input specification for the suppliers of the hydraulic systems.

The Contractor shall develop 849-C655-04 HYDRAULIC SYSTEM CALCULATIONS and submit it to the COR and ABS during Phase II of the Contract for review and approval. The Calculations shall support all of the other deliverables and demonstrate compliance with all applicable Rule requirements.

The Contractor shall develop 849-C655-05 HYDRAULIC SYSTEM ARRANGEMENT & DETAILS and submit it to the COR and ABS during Phase II of the Contract for review and approval.

SPECIFIC REQUIREMENTS

Hydraulic Main Power Units The central hydraulic system shall be served by two independent hydraulic power units, arranged in a primary/standby configuration for redundancy. The pumps, tanks, filter and cooler of each hydraulic power unit shall be mounted on a skid. Each unit shall be fitted with main pump(s), hydraulic cooling/filter/transfer pump(s), duplex hydraulic oil filter, a hydraulic oil cooler, all valves and all necessary temperature, level and filter clogged measurement for fully automated service.

The main pump(s) shall be remotely adjustable, varying between idle and maximum. Pressure control in the hydraulic system shall either be accomplished hydraulically or electronically.

The capacity of the main pump(s) shall be determined by the greatest required capacity of the following operational conditions:

Hoisting at nominal pull the suction pipe from maximum dredging depth to the inboard position, in 5 minutes Moving all gantries for one suction pipe inboard/outboard in 3 minutes Open or close all bottom doors in 3 and 3 minutes respectively.

Hydraulic Consumers Main System If hydraulic powered winches are selected for the dredging system, isolation valve(s) shall be fitted between the main system and the power pack and the hydraulically driven dredge pipe winches, which shall allow for operation of the winches without pressurizing the whole system.

All consumers on the ring main shall be capable of being isolated from the hydraulic system by means of manual ball valves.

Hydraulic Draghead Power Units Dedicated skid-mounted hydraulic units shall be installed to supply the cylinders and valves for each active draghead, one HPU per draghead. The size and capacity shall be determined according to the draghead manufacturer’s requirements, further described in Contract Paragraph C511.

Emergency Closing System At a minimum, an emergency closing device shall be installed for the suction inlet valve, the self-emptying suction inlet valve, the jet discharge to the suction pipes and the inlet valves of the jet pumps.

The emergency closing system shall consist of a hydraulic accumulator which is pressurized by the main system, and a set of separate directly controlled solenoids which can be activated from the bridge. The emergency closing device shall be active at all times, even when the HPU is off.

The emergency closing device shall be provided with means for depressurizing the accumulator for service.

Hydraulic Control The complete dredging hydraulic system and all its consumers shall be remote controlled from the dredging control console as further described in Contract Paragraph C524.

Local control shall be provided for the swell compensation system (push buttons), bow coupling winch (wireless) and gantry winches (wireless) Proportional speed control shall be provided for the gantry winches, gantries and overflow.

Pulse Traps The Contractor's noise and vibration analyses (see Contract Paragraph C180) shall specifically identify all vessel hydraulic systems. For each system, noise and vibration frequency or frequency ranges (for variable pump speed systems) together with vibration forces and sound pressure levels for the frequency or frequency ranges shall be provided.

Hydraulic noise attenuation devices, such as PULSCO Pulse Traps, shall be provided for hydraulics systems that cause noise or vibration levels in excess of those allowed by the ABS Crew Habitability standards identified in this specification.

SPECIAL FEATURES

None.

DELIVERABLES

849-C655-01 HYDRAULIC SYSTEM DESCRIPTION

849-C655-02 HYDRAULIC SYSTEM FUNCTIONAL BLOCK DIAGRAM

849-C655-03 HYDRAULIC SYSTEM FUNCTIONAL DESCRIPTION

849-C655-04 HYDRAULIC SYSTEM CALCULATIONS

849-C655-05 HYDRAULIC SYSTEM ARRANGEMENT AND DETAILS

STANDARDS

ISO 4406, Hydraulic Fluid Power – Fluids – Method for Coding the Level of Contamination by Solid Particles, class 17/15/12

C765 COMMUNICATION EQUIPMENT

The dredge shall be provided with communication equipment as required by the regulatory bodies and SOLAS regulations, as well as equipment described in this section. All communications equipment shall be installed per manufacturer’s recommendations and shall be powered from UPS sources and/or DC batteries.

REQUIREMENTS

The Contractor shall develop during Phase II drawing 849-C765-01 INTERIOR COMMUNICATION SYSTEMS and 849-C765-02 EXTERNAL COMMUNICATION SYSTEMS and submit it to the COR and ABS for review and approval.

A complete integrated communications system, including internal communications (IC) two-way calling and public address (PA) system, shall be provided and installed by the Contractor as described below. The systems shall be installed complete with network controllers, amplifiers (if necessary), back-up/reserve battery power sources, desk or wall mounted phones, PA speakers and horns, indicator lights and buzzers, noise cancelling headsets and PA microphones.

The systems shall be designed and installed so that the loss of one component of the system does not disable the rest of the system.

The IC and PA systems shall have a main and back-up power supply. The IC and PA systems shall be provided with a back-up/reserve power supply that is independent of the vessel’s electrical system. In the event of the loss of primary power supply, the systems shall automatically switch to the back-up power supply. The back-up power supply shall be sized to support the systems for 18 hours (per 46 CFR 112.05).

The systems shall give an alarm or notification on the bridge when the back-up/reserve power supply is low or requires replacement.

The numbers for each station being served by the IC system shall be designed and arranged logically with respect to the arrangements and shall be approved by the COR. All IC stations on respective decks shall start with the same number.

The PA dial number shall be an easily recognized number.

The Contractor shall provide and install engraved plastic directory plates at every IC station.

The directory shall include numbers to all stations and the PA dial call feature number. The directories shall be either bulkhead mounted or secured to a desk with damage free, adhesive mounting, The COR shall approve the mounting method during installation.

SPECIFIC REQUIREMENTS

Interior Communications

a. Sound-Powered Telephone System The Contractor shall provide and install a common talk, selective ring, sound powered phone system as required by the regulations and meeting IEC 60945. All sound powered phone stations shall be drip-proof with integral selector switch, hand crank (magneto) and bell. Stations in machinery spaces shall be installed in sound deadening enclosures and fitted with rotating blue beacons and audible bells powered from the nearest emergency lighting circuit.

Earmuff type headsets shall be provided for machinery space stations, stowed in boxes adjacent to the station. Headset with plug-in jack shall have sufficient cable length to allow for hands-free emergency operation.

Phone stations located on Weather decks shall be mounted in IP66 or IP67 (if exposed to immersion) enclosures that do not require tools to open hinged access door.

The sound powered telephone system primary circuit (1JV) shall allow, at a minimum, for communication between the following stations/spaces:

• Bridge (all Bridge Control Stations)

• Captain’s SR

• Chief Engineer’s SR

• Engine Room

• Engine Control Room

• Auxiliary Machinery Spaces

• Steering Gear Room

• Emergency Generator Room The system shall have capacity to add up to two (2) additional stations.

b c. Dial Telephone System The Contractor shall provide and install an ABS type-approved, VoIP-based, PABX dial telephone system complying with ABS requirements for voice communication and configured as an emergency communications system per SOLAS. It shall consist of a digital automatic dial telephone system suitable for marine installation and capable of handling all rooms/spaces on the vessel (excluding storage and void spaces) and also allow for 20% phone extensions growth. The dial telephone system shall be software configurable, upgradable and expandable and be provided with cables, phone jacks, and patch panels as required to create a functional system.

Dial telephone stations shall be installed in the deckhouse common spaces and workspaces (except heads), engine room, ECR, auxiliary machinery spaces and others as determined by the COR. Locations of telephones in spaces shall be reviewed and approved by the COR.

The system shall be integrated with the PA/GA system.

c d. PA/GA System The Contractor shall provide and install a type-approved integrated Public Address/ General Alarm/ Talkback ICP duplex system throughout the vessel that complies with USCG, SOLAS and ABS regulations. The system shall be integrated with and accessible through the telephone system. The system shall be addressable by zones and be complete, with redundant amplified systems, and provided with UPS and battery back-up. The main PA/GA station shall be in the Bridge.

The system shall include tone generators for the general alarm and shall support use of prerecorded messages to be loaded into the system. The system shall also be capable of providing an external signal to allow public address announcements to be mimicked by visual signage.

An intelligent digital control head shall provide the user with a series of PA/GA control menus displayed on a high-resolution, fully dimmable, color LCD screen with touch panel. This control panel shall be located for easy access in the Bridge.

General Alarm Contact makers shall be provided, at a minimum, in the Bridge, the ECR and the Emergency generator Room.

The system shall be provided with loud hailers on top of the Bridge.

Machinery spaces shall be provided with visual and audible annunciation that consolidate all communication calls and system alarms (see Contract Paragraph C780) into single, multicolor, tower units with different tone and color associated to an event, alarm or call.

d e. Cellular Amplifier & Repeater System f.

The Contractor shall provide and install two (2) cellular amplifier and repeater systems each with the following system components:

• Marine omni-directional antenna mounted on Bridge Top Mast,

• Cellular amplifier or repeater to boost signal

• Indoor antennas to rebroadcast signal throughout the interior (Bridge, Office(s), Berthing, Mess, Workshop(s) and crew common spaces at a minimum) and exterior (weather) spaces on the vessel.

The amplifier system shall be compatible with all major US carriers.

Exterior Communications

e. VHF Radio The Contractor shall provide and install two (2) 25-Watt marine VHF-DSC radios. Each radio shall be located at each Bridge Wing Console, with respective antennas located on Bridge top, on the same side of the ship as the radios. These are in addition to the VHF radios in the GMDSS system.

The Contractor shall also provide six (6) handheld 40-channel VHF radios with battery packs, belt clips, and chargers.

f g. Global Maritime Distress and Safety System (GMDSS) The Contractor shall provide and install one complete GMDSS radio station for Sea Area A1, with INMARSAT equipment. The following shall be part of the GMDSS equipment:

• NAVTEX receiver, located at the Bridge Central Console BCC (see Contract Paragraph C770)

• Two (2) VHF radios (IMO GMDSS approved), located at the BCC

• Three (3) hand-held VHF radios (IMO GMDSS approved) with battery chargers

• At least one (1) GPIRB

• Two (2) Search and Rescue transponders (SART)

• One (1) distress panel in the BCC with single activation button with protection for inadvertent activation g h. VSAT The Contractor shall provide installation support for a Government furnished marine VSAT system. Details of the VSAT system will be provided by the Government during Phase II. This system shall interface with the PABX and dial telephone.

The Contractor shall provide and install the antenna foundation (see Contract Paragraphs C317 and C330), power and control cables to the antenna (see Contract Paragraph C725), server rack(s) for the VSAT control equipment and servers, and cables to wall mounted data points at each phone location. VSAT equipment shall be included in the RF System Design Study and the ANTENNA ARRANGEMENT DRAWING (see Contract Paragraph C770).

h. IRIDIUM Satellite Communications The Contractor shall provide installation support for a Government-furnished Iridium Satellite telephone system with data and PABX interfaces. Details of the Iridium Satellite telephone system will be provided by the Government during Phase II.

i. Automatic Identification System (AIS) A self-contained AIS transceiver in accordance with SOLAS regulations shall be provided. It shall incorporate a GPS system and VHF transceiver and shall interface with navigation equipment (Contract Paragraph C770)

j. Video Monitoring System (CCTV)

An IP based Closed-Circuit Television System shall be provided and…