HB FY11 Dry Dock Spec - 9-7-10.pdf

NOAA SHIP HENRY B. BIGELOW (R225)

FY2011

DRYDOCKING AND REPAIRS

DETAIL SPECIFICATION

April 2010 (Revised 9/7/10)

NOAA - Port Office Northeast Marine Support Facility

166 Water Street Woods Hole, MA 02543

Marine Engineering Division - MOA2 Marine Operation Center, Atlantic

439 West York Street Norfolk, VA 23510

NOAA Ship HENRY B. BIGELOW FY11 Drydocking and Repairs April 2010 (Revised 9/7/10)

Table of Contents (Revised 9/7/10)

1. Scope 4

2. General Requirements 4

3. Basic Items

3.1 301: Temporary Services 8

3.2 302: Drydocking and Routine Drydock Work 10

3.3 303: Sea Valve Overhauls 13

3.4 304: Zinc Renewals and Additional Zinc Anode Installations 19

3.5 305: Cathodic Protection System Inspection and Replacement 20

3.6 306: Underwater Body Coating 25

3.7 307: Centerboard Inspection, Repairs, and Modifications 27

3.8 308: Distribution Panel Enclosure Replacement 32

3.9 309: Bow Thruster Inspection 34

3.10 310: Vent Fan VFD Control Installation 36

3.11 311: Fuel Oil Overflow Pipe Sight Glass Installation 38

3.12 312: Ground Tackle Inspection and Preservation 39

3.13 313: Weather Deck HVAC Intake Vent Modifications 40

3.14 314: Rudder / Tail Shaft Removal and Inspection 44

3.15 315: Acoustic Doppler Current Profiler Transducer Rotation 49

3.16 316: SSDG Engine Overhauls (3508) 53

3.17 317: SSDG Jacket Water / Aftercooler Expansion Tank Replacement 59

3.18 318: Deck Drain Installation 61

3.19 319: Potable Water Shut-Off Interlock Installation 63

3.20 320: Switch Board Cleaning and Meter Calibrations 65

3.21 321: ABS Special Survey 68

3.22 322: Radar Platform Hand Rail Assembly Installations 69

3.23 323: Propulsion Shaft Thrust Bearing Inspection 73

3.24 324: Hull Mounted Temperature Transducer Repair 75

3.25 325: Dock Trials 76

3.26 326: Sea Trials 77

4. Additional Work Items

4.1 401: Additional Work [Labor and Materials] 78

5. Option Items (Revised 9/7/10)

5.1 501: Waste Oil Tank Coating and Piping Modification 79

5.2 502: Trawl Winch Control Booth Installation 80

5.3 503: Wet Lab J-Boxes Replacement and Relocation 84

5.4 504: Egg Pump Inspection 89

5.5 505: Lifting Eye Installations 90

5.6 506: Pilothouse Exterior Catwalk and Handrail Installation 92

5.7 507: Evaporator / Distiller Circulation Heater Installation 93

5.8 508: Stack Plenum Door Installation 97

5.9 509: Cooling Water Piping Modifications 99

April 2010 (Revised 9/7/10)

5.10 510: Telescoping Boom Crane Hydraulic Hose Replacement 101

5.11 511: Fuel Oil Transfer Pump Replacement 103

5.12 512: Anchor Handling Modifications 106

5.13 513: Anchor Windlass Motor Overhaul & Brake Replacement 108

5.14 514: Load Test (Revised 9/7/10) 110

Appendix A: Standard Specifications, References, and Drawings 111 Appendix B: Government Furnished Equipment 114 Appendix C: Attachments 115

1. Scope

These detailed specifications contain requirements for NOAA Ship HENRY B. BIGELOW (R225) FY10 Drydocking and Repairs.

2. General Requirements

2.1 References

2.1.1 NOAA Standard Specification AMC-000-1F, “General Requirements for Contract Repair Work on NOAA Ships”

2.1.2 NOAA Standard Specification MOC-631-2D, “Coating Systems for Steel Surfaces”

2.1.3 Drawing HB-085 FA02, “General Arrangements”

2.1.4 Drawing HB-631 FF04, “Painting Schedule”

2.1.5 NAVSEA Standard Item 009-32, “Cleaning and Painting Requirements; accomplish”

2.2 Requirements

2.2.1 References 2.1.1 through 2.1.3 form a part of these Detail Specifications. All provisions and requirements contained therein are applicable to all work items, including all additional work items, which are authorized by the Contracting Officer. All work procedures and all materials shall meet the ABS Rules.

2.2.2 Unless otherwise stated in these work items, prepare and coat all new steel, disturbed steel, or otherwise required painted surfaces in accordance with References 2.1.2 and 2.1.5. If no paint system is identified in the item, then apply the appropriate coating system similar to the area being coated as identified in Paragraph 5.2 of Reference 2.1.2 except that the top coat shall match the surrounding area. Reference 2.1.2 may be amended with reference 2.1.5 when approved by the COTR.

2.2.3 Provide two hard copies and an electronic copy of all Condition Reports in Adobe Portable Document Format (.pdf).

2.2.4 Maintain a Quality Assurance (QA) TEST AND INSPECTION PLAN applicable to all work items, including all additional work items which are authorized by the Contracting Officer.

Update QA TEST AND INSPECTION PLAN weekly and provide a copy to the COTR 24-hours prior to the scheduled weekly progress meeting. Include the following minimum information for each work item and additional work item:

a. Specification item and paragraph number

b. Component/Equipment name

c. Test or Inspection description

d. Acceptance Criteria

April 2010 (Revised 9/7/10)

e. Quality Assurance Inspection Report

2.2.5 Maintain a separate Test Schedule. Update Test Schedule weekly and provide a copy to the COTR 24-hours prior to the scheduled weekly progress meetings.

2.2.6 Develop, in consultation with the American Bureau of Shipping (ABS) Surveyor, a written survey schedule that lists the items to be inspected and the scheduled dates and times of the inspections. Submit the survey schedule to the COTR within 48 hours after the start of the contract performance period. The survey schedule shall list all initial inspections required by the ABS Surveyor. In addition, the Contractor shall schedule the services of an ABS Surveyor as required by ABS for performing inspections of all new installations, hull modifications, tank inspections, gauging inspections, and load tests. NOAA will pay for all ABS surveys using a Blanket Purchase Agreement associated with work required by these specifications. The Contractor shall provide a credit for any additional ABS charges associated with rescheduling of surveys and rework surveys which are directly under the control of the Contractor.

2.2.7 Provide a copy of ABS approved welding procedures and maintain a list of currently qualified welders.

2.2.8 Weigh all materials and items removed, installed, or relocated on the ship. Provide a summary report to the COTR indicating the total weight in pounds of the materials and items with a breakdown of their locations by space, deck, frame, distance from centerline, and height off of the deck. A sample Weight Report form is attached to these specifications.

2.2.9 Update Reference 2.1.3 to “as-built” drawing for modifications accomplished by these detail specifications.

2.2.10 Update all other referenced drawings in individual work items using AutoCAD or AutoCAD LT programs for modifications accomplished by work items.

2.2.11 The Contractor may reduce ship’s draft by offloading liquid loads and/or ballasting in order to provide the required clearances under the keel during transit to and from the Contractor’s Facility. Oil tanks shall not be ballasted. After all other work is completed, reload and trim the ship to the as-found conditions. In the event fuel is off-loaded, the fuel shall be metered off and on through a filter de-watering system. Store removed fuel in clean storage facilities. The minimum draft which will be permitted is 19.5 feet.

2.2.12 Electrical power distribution systems available aboard the ship for Contractor power tools include 480vac via three submersible pump receptacles and 120vac receptacles throughout the ship.

2.2.13 Several work items may affect habitability on the ship. Schedule work on these items at the same time and minimize that work to a two week period to the maximum extent possible in order to minimize the impact on Ship’s Force. Provide the COTR with three days advance

April 2010 (Revised 9/7/10) notice prior to starting work that affects ship’s habitability in order for the Government to make other arrangements for lodging and meals for the crew off the ship.

2.2.14 The Contractor shall minimize shipboard work and inspections requiring ship’s force and COTR presence on December 23, 24, 30, and 31 2010. Shipboard work may include mechanical tools and light industrial work. The Contractor shall not schedule nor conduct any shipboard hot work during these periods.

2.2.15 Vehicle and personnel access to NOAA Ship HENRY B. BIGELOW for pre-bid inspections is restricted via gated security. All contractors, vendors, and visitors are encouraged to make pre-arrival arrangements for access in advance by calling the Port Engineer at 508-495- 2347.

2.3 Notes

2.3.1 Descriptive data of NOAA Ship HENRY B. BIGELOW is as follows:

Length Overall 208.6 feet Beam (Molded) 49.2 feet Displacement 1,840 metric tons Light Ship 2,479 metric tons Full Load Draft 20.35 feet Full Load Centerboard Retracted

29.7 feet Full Load Centerboard Extended Cruising Speed 12 knots [Max speed 14 knots] Propulsion Diesel Electric, Single Propeller, Fixed Pitch, with two in-line 1508 hp DC Motors Generators Caterpillar 3508B, 3512B (two each) 600 volts AC Bow Thruster Elliott 40T3S, 360 Degree Electric Service 480 volts AC Year Built Commissioned July 2006 Builder VT Halter Marine Inc,. Moss Point, MS

ABS ID 06142681

IMO Number 9349057 Construction Welded Steel Hull, Aluminum Superstructure Crew size 22 Bunks 39 Homeport of Record Woods Hole, MA Drydock and Repair Contractors Facility

2.3.2 Reference 2.1.3 was used in the identification, location, and naming of spaces within these Detailed Specifications. As the government cannot guarantee the accuracy of this drawing, contractors are encouraged to verify information identified in reference 2.1.3 prior to starting any work or submitting a bid.

April 2010 (Revised 9/7/10)

2.3.3 A copy of referenced drawings and technical manuals may be reviewed on board the ship during pre-bid inspection or in the Northeast Fisheries Science Center, 166 Water Street, Woods Hole, MA 02543 upon request.

2.4 Hazardous Materials

2.4.1 NOAA Ship HENRY B. BIGELOW was constructed between 2004 and 2006. There was no asbestos used during construction. Asbestos requirements contained in referenced Standard Specifications do not apply to this new ship.

2.4.2 Several items in this specification require gas freeing of tanks in order to accomplish the required work. Prospective bidders should be careful not to duplicate costs of gas freeing where tank(s) are required to be gas freed to perform work in more than one item.

2.4.3 The Contractor is responsible for the control, handling, and disposal of any hazardous materials generated during accomplishment of this contract.

2.5 Metrication

2.5.1 A combination of Standard English units of measure (feet – pounds) and Metric System International (SI) units of measure (millimeter - kilogram) were used in the builders' drawings, specifications and reference materials for construction, operation, maintenance and repair of this ship. In this specification for NOAA Ship HENRY BIGELOW, there is a combination of Standard English units and metric units.

April 2010 (Revised 9/7/10)

3. BASIC ITEMS

3.1 Item 301: Temporary Services

3.1.1 Work Description - Includes labor, material, and equipment for Temporary Services at the Contractor’s Facility.

3.1.2 References

(a) NOAA Standard Specification AMC-000-2C, “Temporary Services at Contractor Facilities”

3.1.3 Government Furnished Material

3.1.3.1 None

3.1.4 Requirements

3.1.4.1 Provide temporary services required in accordance with Reference (a) with shore connection details and additional requirements as follows for the entire performance period:

a. Electrical Shore Power --- Two circuits rated for 480 VAC, 3-Phase, 60-Cycle, 400- Amp service each [800 amps total]. The Contractor has the option to connect directly to ship’s Russell-Stoll receptacles located on the 01-Deck aft junction box, or to use ship’s shore power cables with NATO-standard plugs. If ship’s cables and plugs are used, provide protection to prevent damage to ship’s plugs and cables.

b. Potable Water --- One 1-1/2 inch hose providing a minimum of 100 gallons per minute in a range of 40 to 60 psi.

c. Telephone Service --- Six private telephone lines distributed as follows:

(1) Two lines to ship’s telephone shore tie (1 voice, 1 fax).

(2) Two lines to ship’s dockside office spaces (2 voice)

(3) Two lines to COTR dockside office space (1 voice, 1 fax) Telephone service shall include local calls, toll free calls, and calling card calls only. Long distance calls shall either be blocked or itemized and billed directly to the ship for payment.

d. High-Speed, Broadband Internet Connectivity --- Internet connections via local Internet Service Provider (ISP). High-speed, broadband internet is defined as Digital Subscriber Service (DSL) or cable internet service with typical minimum download speeds of 320 Kbps.

The service shall be a business-type account that supports VPN connections, if available, and shall include necessary DSL or cable modem provided by the ISP. Provide two high speed connections, one to the ship and one to dockside offices. Make ship’s connection available while the ship is dockside and while the ship is in the dry dock.

April 2010 (Revised 9/7/10)

e. Sanitary and Cooling Water --- One 2-1/2 inch hose providing a minimum of 150 gallons per minute in a range of 45 to 60 psi.

f. Sewage Disposal --- One 3-inch cam lock quick-disconnect fitting and hose.

h. Garbage --- One dumpster on the fantail.

i. Vehicle Parking Spaces --- A minimum of six spaces inside the gate, near the dockside office spaces or the ship, plus a minimum of six more spaces outside the gate.

j. Dockside Office Spaces --- Three dockside office spaces total, comprised of two spaces for ship’s dockside office, and one space for the COTR. Provide three sets of keys to each space to the COTR.

k. Security --- Security services to make rounds of the ship hourly [this is an increase from every two hours required in reference (a)] on weekdays from 1600 – 0800, on weekends from 1600 Friday to 0800 Monday, and on federal holidays.

l. Engine Room Bilge Cleaning --- In addition to disposing of oily water in engine room bilges in reference (a), pump out and dispose of an estimated 500 gallons of waste oil from waste oil tank 4-47-1 and an estimated 750 gallons of oily water from oily waste tank 4-47-2. Access these tanks through manhole covers in Engineers Workshop 3-39-01 and Auxiliary Machinery Room 3-39-01. After pumping out these tanks, close access covers with new gaskets.

m. Crane Service --- Provide crane services and rigging services on an as-needed basis for an estimated total of ten hours for loading or offloading ship’s equipment and loading ship’s stores. Crane loads are estimated not to exceed to 5,000 pounds. Provide the COTR with a procedure to request crane services with nominal four hours advance notice. If additional crane service is needed beyond estimated ten hours, then the COTR will provide an additional item request to the Contracting Officer for negotiated contract modification.

n. Temporary Storage --- 400 square feet of secure, covered storage for ship’s equipment, supplies, and stores. Provide three sets of keys to the COTR.

3.1.4.2 Ship’s Force may elect to obtain separate lodging ashore during this contract performance period. Temporary service requirements for ship’s habitability may be adjusted accordingly. Service reductions may be the subject of a negotiated contract modification.

3.1.5 Quality Assurance

3.1.5.1 COTR inspections in accordance with Reference (a).

3.1.6 Notes

3.1.6.1 Steam is not required.

END OF ITEM

April 2010 (Revised 9/7/10)

3.2 Item 302: Drydocking and Routine Drydock Work

3.2.1 Work Description - Includes labor, material, and equipment for drydocking the ship, cleaning the hull, inspecting underwater body portions of the hull, and refloating the ship.

3.2.2 References

(a) NOAA Standard Specification AMC-997-1A, “Drydocking and Routine Drydock Work”

(b) Drawing HB-085 FA04, “Docking Drawing”

(c) Drawing HB-163 FP19, “Sea Chest Diagram”

(d) Drawing HB-243 FM01, “Shafting Layout and Details”

(e) Tech Manual HB-244 01 (FRV40-225-006-010), “Stern Tube Bearing (Thordon Compac) and Shaft Seal (Kobelco)”

(f) Tech Manual HB-562 01 (FRV40-224-071-010), “High Performance Flap Rudder, Willi Becker”

(g) Naval Ships’ Technical Manual Chapter 081, “Waterborne Underwater Hull Cleaning of Navy Ships”

(h) NOAA Docking Report S0700/SWB997

3.2.3 Government Furnished Material

3.2.3.1 None

3.2.4 Requirements

3.2.4.1 Provide dry docking and routine dry dock work in accordance with Reference (a) and the following:

a. Dry dock the ship within 72-hours of ship’s arrival at the contractor’s facility.

b. Use Reference (b) blocking position 2 at a minimum keel block height of four feet for access to transducers and centerboard. (Revised 9/7/10)

c. After positioning and before hauling the ship, conduct a diver’s inspection of underwater keel block positions relative to hull mounted transducers and associated fairings to verify that keel blocks will not come in contact with these fixtures.

3.2.4.2 Inspect interior of sea chests for deteriorated acoustic treatment materials and coatings using References (b) and (c) as guides. Note that HENRY B. BIGELOW’s sister ship OSCAR DYSON was drydocked last year. Deteriorated acoustic treatment materials and support structures were found in DYSON’s sea chests. The same is expected here for BIGELOW.

Provide results on a condition report, along with recommendations for repairs.

April 2010 (Revised 9/7/10)

3.2.4.5 Inspect all other shell plate openings listed on sheet 6 of References (b), (c), and (d).

Provide results on a condition report.

3.2.4.3 Measure and record stern tube bearing wear down readings, specifically the shaft-to- Thordon stern tube bearing clearance in accordance with Reference (e) for bearing details.

3.2.4.4 Inspect rudder sections to the extent possible without removing rudder welded access plates in accordance with Reference (f). Remove bolted covers or obstructions, measure Neck Bearing, Rudder Hinge, Link System slide bolt to slide bushing clearance, completing the BEARING CLEARANCES table. Perform an inspection of the rudder with COTR, providing for a man-lift or scaffolding to reach all rudder areas. Provide results on a condition report.

Notify ABS surveyor of availability for inspection.

3.2.4.5 In addition to feeler gage measurements of bearing/shaft/pin clearances taken above, perform a test of the rudder and the rudder flap clearances by jacking the rudder forward, aft, port and starboard to determine amount of travel at a convenient location to attach dial indicator measuring travel of the rudder with respect to the hull. Measure and record travel and dial indicator location(s) on a condition report.

3.2.4.6 Remove rudder and rudder flap drain plugs and inspect for water leakage into the rudder and flap. Renew and reinstall plugs upon receipt of condition report response.

3.2.4.7 Inspect existing hull mounted zincs for wastage. These are nominal 23 pound bolted strap type measuring 1-1/4 inch x 6 inch x 12 inch. Check all bolts for tightness. Record condition and location of zincs to document existing conditions and determine cathodic protection system effectiveness. Ships designed zinc anode quantities and locations are as follows:

12 zincs on Rudder 32 zincs in Bow Thruster Tunnel 3 zincs in Port Sea Chest 3 zincs in Starboard Sea Chest

3.2.4.8 Remove void drain plugs listed below and inspect for water intrusion. Record results on a condition report. Fill and drain or float coat voids and rudder with rust preventive compound complying with MIL-C-16173, Grade 5, or Eureka Fluid Film Liquid A or equal. Reinstall void drain plugs using ABS approved thread anti-seize sealant on all plugs:

Skeg drain plug frame 87-88 starboard Aft stern tube structure Port & starboard bilge keels Rudder and rudder blade/flap

3.2.4.9 Clean/polish the propeller blades in accordance with reference (g), section 081-3.3 and Table 081-3-2.

3.2.4.10 After the propeller has been cleaned and polished, contact the COTR to inspect the propeller. After COTR inspection, protect the propeller with padding to prevent damage until just prior to undocking.

3.2.4.11 Record hull inspection results on Reference (h) in lieu of Docking Report form 2410 in Reference (a).

3.2.3.12 Provide an updated Reference (b) Docking Drawing noting any variances in this new ship’s blocking arrangement. Note that this is the first docking after ship’s delivery in 2006.

3.2.5 Quality Assurance

3.2.5.1 COTR inspections in accordance with reference (a).

3.2.6 Notes

3.2.6.1 See Item 304 for zinc renewals and additional zinc installations.

April 2010 (Revised 9/7/10)

3.3 Item 303: Sea Valve Overhauls

3.1.1 Work Description - Includes labor, material, and equipment for sea valve overhauls, one new sea valve installation, and sea chest vent pipe flushing.

3.3.2 References

(a) NOAA Standard Specification AMC-505-1B, “Valve Overhaul and Test”

(b) Drawing HB-256 FP08, “Main Seawater Cooling System”

(c) Drawing HB-524 FP21, “Egg Sampling System Diagram”

(d) Drawing HB-524 FP23, “Auxiliary Seawater Cooling System”

3.3.3 Government Furnished Material

3.3.3.1 None

3.3.4 Requirements

3.3.4.1 Remove, overhaul, test, and reinstall sea valves listed in Table 1 below in accordance with Reference (a). The term “overhaul” used in reference (a) shall be redefined for this work item to be the same as “rebuild” is defined in NOAA Standard Specification MOC-000-1G. In lieu of overhaul, the Contractor may renew any valves equal to or smaller than three inches.

References (b), (c), and (d) are provided for guidance.

3.3.4.2 After reassembly and prior to the shop hydro test of all steel valves and spool pieces, apply the first coat of paint system STL-11.

3.3.4.3 Prior to installing on the ship, apply the second coat of paint system STL-11 on the valves and spool pieces. Top coat color shall be same as found.

3.3.4.4 Replace all existing steel threaded fasteners with brass.

3.3.4.5 Apply an anti-seize lubricant to fastener threads prior to installing and tightening.

3.3.4.6 Replace rubber seat gasket flappers in all scupper valves.

3.3.4.7 Inspect scupper valve pins for excessive wear or corrosion.

3.3.4.8 Perform the following work on all four chest strainers:

(a) Remove to the shop.

(b) Thoroughly clean interior housing to remove all growth and foreign matter.

(c) Rework all mating and sealing surfaces to reestablish sealing capabilities.

(d) Conduct visual inspection for evidence of damage or deterioration.

(e) Prepare and preserve interior and exterior surfaces in accordance with General Section reference 2.1.2. Apply paint system STL-11 to the prepared surfaces.

(f) Reassemble strainers using a new gasket and brass fasteners.

(g) Power tool clean and preserve the tank top and exposed areas around sea chest strainers in accordance with General Section reference 2.1.2. Apply paint system STL-11.

(h) Reinstall strainers on ship in original locations using new brass fasteners. Apply an anti-seize lubricant to fastener threads prior to installing and tightening.

3.3.4.9 Install one new bolted, flanged valve similar to existing Egg Pump Suction Valve 524- VL-45 to provide ship with two-valve integrity for pump maintenance and repair. Install this new valve as close as possible to shell plate penetration, allowing for easy-access for valve removal and reinstallation with hand tools. Align the valve handle for easy access. Update Reference (c) with this new valve.

3.3.4.10 Flush all sea chest vent piping from weather deck vent fittings down through sea chests using water with 100 psig water pressure to remove all mud, slime, and loose rust particles.

Sea Valve List Table 3.3.1 System Valve ID Size Valve Type Action

Main Sea Water Valves, Sea Chest Vent’s and Air Purge Valves in Engine Room Sea Chest Inlet Stbd Fr 61

163-VL-01 10” Gate, bronze Flanged

Sea Chest Vent Stbd

506-VL-50

AKA 163-

VL-11

2” Gate, steel welded

Replace with new bolted flanged

Sea Chest Air Blowdown Stbd

551-VL-70

AKA 163-

VL-07

¾” Gate, steel Welded

Replace with new bolted flanged

Sea Chest Inlet Port Fr 61

163-VL-02

10” Gate, bronze

Sea Chest Vent Port

506-VL-49

AKA 163-

VL-10

2” Gate, steel Welded

Replace with new bolted flanged

Sea Chest Air Blowdown Port

551-VL-69

AKA 163-

VL-08

¾” Gate, steel Welded

Replace with new bolted flanged

Sea Chest Warm Up Stbd Fr 62-63

163-VL-03 6” Gate, bronze

April 2010 (Revised 9/7/10)

Sea Chest Warm Up Port Fr 62-63

163-VL-03 6” Gate, bronze Flang7ed

Stbd Ovbd Fr 71- 72

256-VL-23 10” Check bonze

Port Ovbd Fr 71-72

256-VL-24 10” Check bronze

Oily Water Separator Ovbd

593-VL-47 1” Flanged Gate, Williams Valve Co.

Replace with new bolted flanged

Stern Tube Supply

256-VL-48 1-1/4” Globe, bronze

Replace with new bolted flanged

Scientific Sea Water System Valves in Engine Room Sea chest inlet Fr 12 Lower

524B-VL-

2” Butterfly Ductle iron & Polypropylele lined ASTM D4104

Sea chest inlet Fr 12 Upper

524B-VL-

2” Butterfly Ductle iron & Polypropylele lined ASTM D4104

Egg Pump Sea Chest Stbd Fr 53-

524-VL-45 6” Gate, bronze

Egg Pump Sea Chest Stbd Fr 53-

524A-VL-

6” Gate, bronze

Auxiliary Sea Water Valves in Engine Room Overboard Valve 524-VL-11 2-1/2” Scupper Gag valve Bronze

Overboard Valve 524-VL-12 2-1/2” Scupper Gag

Overboard Valve 524-VL-23 5” Scupper Gag

Overboard Valve 524-VL-33 2-1/2” Scupper Gag

Marine Sanitation Device in Domestic Equipment Room MSD Obvd 524B-VL-

3” Gate, Firemain System in Bow Thruster Room

April 2010 (Revised 9/7/10)

Fire Pump Sea Chest Inlet

163-VL-05 4” Gate, Bronze

Fwd Sea Chest Vent

506-VL-48

AKA 163-

VL-09

2’ Gate Valve Steel welded

Replace with new bolted flanged Note: This valve leaked on sister ship

Fwd Sea Chest Air Blowdown

551-VL-68

AKA 163-

VL-06

¾” Gate Valve Steel welded

Replace with new bolted flanged Note: This valve leaked on sister ship

Doppler Speed Log Hull Isolation Valve in Transducer Void Frame 27-28 2 ft port of CL , lower level transducer void

No Mark No.

8” Gate Ships ET will remove/replace the doppler speed log.

Sea Valve List Table 3.3.1

3.3.4 Quality Assurance

3.3.4.1 After completion of all work and prior to preservation, perform a hydrostatic pressure test on strainers at a pressure of 60 psig. Hold the pressure for ten minutes.

3.3.6 Notes

3.3.6.1 Photos of some valves in their installed location are provided for info only. Ship check of interferences is recommended.

Starboard side sea chest 2-inch vent and ¾-inch air blow down valves; Port side sea chest is similar Figure 3.3.1

Upper Scientific Sea Water ball valve, 4-inch FM COV, 2-inch FM vent and ¾-inch FM air valves in Bow Thruster Room Figure 3.3.2

April 2010 (Revised 9/7/10)

3.4 Item 304: Zinc Renewals and Additional Zinc Anode Installations

3.4.1 Work Description - Includes labor, material, and equipment to renew fifty existing zinc anodes and install six new zinc anodes.

3.4.2 References

(a) Drawing HB-085 FA04, “Docking Drawing”

(b) Drawing HB-163 FP19, “Sea Chest Diagram”

3.4.3 Government Furnished Material

3.4.3.1 None

3.4.3 Requirements

3.4.4.1 Renew existing hull mounted zinc anodes. These anodes are nominal 23 pound bolted strap type measuring 1-1/4 inch x 6 inch x 12 inch. Zinc quantity and locations are as follows:

12 on Rudder 32 in Bow Thruster Tunnel 03 in Port Sea Chest 3 [see next section requirements to add 3 additional zincs] 03 in Starboard Sea Chest [see next section requirements to add 3 additional zincs] 50 subtotal

3.4.4.2 Install three new additional bolted zinc anodes and associated welded stainless steel studs and nuts, same as existing, port sea chest

3.4.4.3 Install three new additional bolted zinc anodes and associated welded stainless steel studs and nuts, same as existing, starboard sea chest.

3.4.5 Quality Assurance

3.4.5.1 Gas-free certification for engine room bilges in way of hotwork for new zinc studs on sea chests.

3.4.6 Notes

3.4.6.1 Another work item in this specification requires an evaluation of deterioration of existing zinc anodes before these renewals for documenting the docking report.

3.4.6.3 Original existing 50 zinc anodes plus 6 new zinc anodes = 56 total zinc anodes.

April 2010 (Revised 9/7/10)

3.5 Item 305: Cathodic Protection System Inspection & Replacement

3.5.1 Work Description - Includes labor, material, and equipment to inspect and evaluate ship’s existing cathodic protection system.

3.5.2 References

(a) Technical Manual HB-633 (FRV40-225-011-010), “Cathodic Protection System, Marimpress”

(b) Drawing HB-163 FP19, “Sea Chests Diagram”

3.5.3 Government Furnished Equipment

3.5.3.1 Copper TZX27 Anodes 18 ea.

3.5.3.2 Iron TZX29 Anodes 2 ea.

3.5.4 Requirements

3.5.4.1 Provide the services of a Cathelco factory-authorized field service technician to supervise evaluation, service, and repair of ship’s existing Cathelco Cathodic Protection System.

3.5.4.2 Prior to any work on this item, and before ship is drydocked, conduct an operational test of ship’s Cathelco cathodic protection system in accordance with reference (a). Ship’s Force will operate equipment.

3.5.4.3 Inspect Cathodic Protection System controller, reference cells, and anodes in accordance with Reference (a). Locations are as follows:

Controller in Passage 1-7-01 Reference Cells at Frame 24-25 Anodes at Frame 81-82.

3.5.4.4 Using a megohmmeter, measure and record resistance readings between each anode and the hull and between the reference cell and the hull. Readings should be greater than 10 megohms.

3.5.4.5 Open, pump out residual fuel, clean, and gas free Fuel Oil tanks 4-19-1 #2 Starboard and 4-19-2 #2 Port to gain access to Reference Cells.

3.5.4.6 Inspect reference cell in accordance with Reference (a) steps 4.1.2 and 4.2.2.3. Unbolt and remove covers and inspect Reference Cell cofferdams from inside the hull and inspect for signs of leakage or corrosion. Inspect external reference cell surfaces for signs of damage.

Clean and re-establish coating inside the cofferdam.

April 2010 (Revised 9/7/10)

3.5.4.7 Open Boss 4-78-0 manhole 4-78-2 to gain access to anodes.

3.5.4.8 Inspect anodes in accordance with Reference (a) steps 4.1.3, 4.2.2.1 and 4.2.2.1. Unbolt and remove covers and inspect Anode cofferdams from inside the hull and inspect for signs of leakage or corrosion. Check that anodes are securely fastened to the hull. Check that mounting stud hole filler is intact. Examine anode dielectric shield for any sigh of damage. Report any evidence of damage or leakage on a condition report. Check cable connections to the anodes for continuity. Clean and re-establish coating inside the cofferdam.

3.5.4.9 Reinstall reference cell and anode cofferdam covers with new gaskets.

3.5.4.10 Close Fuel Oil tanks 4-19-1 #2 Starboard and 4-19-2 #2 Port with new gaskets, and replace any damaged manhole cover fasteners. Estimate that ten percent of the manhole cover bolts will require replacement.

3.5.4.11 Close out manhole cover 4-78-2 to Boss 4-78-0 with new gaskets, and replace any damaged manhole cover fasteners. Estimate that ten percent of the manhole cover bolts will require replacement.

3.5.4.12 In conjunction with Ship’s force, follow ship’s lockout / tagout procedures to secure all electrical power serving the anodes in the bow thruster compartment and in the engine room main sea chests.

3.5.4.13 Disconnect the wiring to each of the anodes in the bow thruster compartment and in the engine room main sea chests.

3.5.4.13 Renew the copper and iron anodes in the bow thruster compartment (16 total) and the engine room main sea chests (4 total). See Reference (b) as a guide for the location of the anodes. When assembling the new anodes in the flange sleeves, place the following over the stud in this order: Insulating washer, steel washer, brass full nut and brass half nut. Tighten earch 27mm nut to 70 ft-lbs with a torque wrench. Do not over tighten as the nuts will strip.

Renew the flange gaskets. See Figures 3.5.1 and 3.5.2.

Figure 3.5.1 – Typical Copper Anode (Iron Anode is similar)

Figure 3.5.2 – Section view of installed anode. Gasket and flange fasteners are not shown.

April 2010 (Revised 9/7/10)

3.5.4.14 Rewire each of the anodes.

3.5.4.15 Upon completion of work clear lockout / tagouts.

3.5.4.16 After all work has been completed, and after the ship is refloated, conduct operational tests for manufacturer’s field service technician to adjust cathodic protection system parameters.

3.5.5 Quality Assurance

3.5.5.1 COTR inspections in accordance with reference (a).

3.5.6 Notes

3.5.7.1 None

April 2010 (Revised 9/7/10)

3.6 Item 306: Underwater Body Coating

3.6.1 Work Description - Includes labor, material, and equipment to prepare and re-coat underwater body coating system.

3.6.2 References

(a) NOAA Standard Specification MOC-631-3B, “Underwater Body Ablative Coating System”

(b) Deleted (Revised 9/7/10)

3.6.3 Government-Furnished Material

3.6.3.1 None

3.6.4 Requirements

3.6.4.1 The existing coating system is an Ameron Coating System applied during ship’s construction; therefore all new paint shall be Ameron brand only for compatibility and in conformity with ship’s Paint Schedule.

3.6.4.2 Prepare and coat the entire underwater body with a “Maintenance System” in accordance with the requirements in Reference (a) and as follows:

3.6.4.2.1 Perform Ultra High Pressure Water Jetting (UHP WJ) to prepare the underwater body for a “Maintenance System”. Sweep and spot the entire underwater body to a WJ-4 visual surface preparation standard, in accordance with SSPC-SP 12. Ensure that all nozzles used in preparing the surface area of the underwater body are a sweeping type nozzle. Note: The term “water jetting” essentially defines the same process as “hydroblasting” or “hydrojetting”, which is not to be confused with “high pressure water washing”.

3.6.4.2.2 Remove all loose paint which is not tightly adhered to the hull entirely down to bare metal. Surface preparation of those areas shall be spot blasted to a WJ-2 visual surface preparation standard, in accordance with SSPC-SP 12. To those spot blasted areas of the hull, apply a “Complete System” in accordance with Reference (a). For bidding purposes, the contractor shall assume 4,000 square feet of the ship’s underwater surface area will require this “Complete System”.

3.6.4.2.3 Complete all potential structural steel repairs, access cuts, NDT testing, and hull plate inserts below the waterline, in other items of these specifications, prior to applying the underwater body coating system.

3.6.4.3 The complete coating system consists of:

April 2010 (Revised 9/7/10)

3.6.4.3.1 Two coats, 5.0-6.0 mils DFT each, Amercoat 235 epoxy. The first coat may be any color, but the second coat shall be gray.

3.6.4.3.2 Three coats, 4.0-5.0 mils DFT each, ABC #3 ablative antifoulant. The first and third coats shall be red and the second coat shall be black, except in the boottopping all three coats shall be black.

3.6.4.4 Upon completion of all coatings in this item and removal of all covering materials, perform a low pressure water washing of the hull and all other weather areas of the ship using clean fresh water, to clean all dust, dirt, and debris from the ship. Cover all deck drain openings and strainer plates to prevent grit and blast materials from clogging the ship’s deck drainage system. After all coatings and clean ups are complete, flush ship’s deck drainage system to ensure all debris has been removed.

3.6.5 Quality Assurance

3.6.5.1 Conduct joint inspection of hull with Ameron Coatings Company representative after hull has been high-pressure water-washed. Provide detailed “Paint Plan” in accordance with Reference (a), paragraph 4.1.2, to COTR prior to starting surface preparation.

3.6.5.2 Conduct joint temperature and humidity readings with Ameron Coatings Company representative prior to each coat of paint applied.

3.6.5.3 Verify all transducers are protected prior to surface preparation and painting as identified in Reference (a).

3.6.5.4 Conduct joint inspection of Dry Film Thickness with Ameron Coatings Company representative gaging after each coat of paint is applied.

3.6.6 Notes

3.6.6.1 Ship was delivered to NOAA in 2006 with new Ameron coating system.

3.6.6.2 In accordance with SSPC-SP 12, Ultra High Pressure Cleaning (UHP WJ) is surface preparation cleaning performed at pressures above 170 MPa (25,000 psi).

April 2010 (Revised 9/7/10)

3.7 Item 307: Centerboard Inspection, Repairs, and Modifications

3.7.1 Work Description - Includes labor, material, and equipment to remove, inspect, repair, clean transducers, modify, and reinstall the centerboard.

3.7.2 References

(a) Technical Manual HB-100 01 (FRV40-225-012-010), “Centerboard Retractable and HPU, AmClyde Model CB-32, Serial Number SO5297”

(b) Drawing HB-631 FF04, “Paint Schedule”

(c) Deleted. (Revised 9/7/10)

3.7.3 Government Furnished Equipment

3.7.3.1 None

3.7.4 Work Requirements

3.7.4.1 Provide the services of an AmClyde factory-authorized field service technician or field service engineer to supervise the work in this item.

3.7.4.2 Accomplish all work in this item in accordance with References (a) and (b).

3.7.4.3 Prior to starting work on this item:

a. Measure and record critical alignment points in centerboard trunk in accordance with Reference (a). Inspect fairing blocks to determine cause of what appears to be excessive gaps.

Removable deck grating is available to safely access centerboard trunk.

b. Conduct an operational test to lower and raise centerboard to maximum extent practical dockside at contractor’s facility. Ship’s Force will operate hydraulic equipment.

c. Measure and record operational hydraulic pressures, oil temperatures, and electrical loads during these tests.

3.7.4.4 In conjunction with Ship’s force, follow ship’s lockout / tagout procedures to secure all electrical power serving centerboard. Tag and disconnect centerboard transducer and associated electrical cables. A list of the installed transducers is provided in table 3.7.1. Where no local connector is present inside the centerboard, cables must be pulled back to the connection source.

All transducer cables are routed through the cable retraction system and through the MCT that enters the centerboard space from the main deck. Cover connectors so they are protected from moisture and shock. Disconnect flexible cable tray. On the bridge, an overhead console must be removed so the centerboard can be removed through the bridge. In conjunction with ship’s force, follow lockout / tagout procedures to secure all equipment on the overhead electronics

April 2010 (Revised 9/7/10) console. Tag and disconnect the cables from the equipment. Remove the console, as an assembly. Store in an area so it will be protected from moisture and shock

ITEM EQUIPMENT NAME MANUFACTURER MODEL

1 SELF NOISE HYDROPHONE

HARRIS

ACOUSTIC

PRODUCTS HAP-5050

5B SCIENTIFIC SONAR SIMRAD ES 120-7C

5C SCIENTIFIC SONAR SIMRAD ES 38B

5D SCIENTIFIC SONAR SIMRAD ES 200-7C

5E’ SCIENTIFIC SONAR SIMRAD PART OF EK-60

5F’

SCIENTIFIC SONAR (TO BE

INSTALLED SUMMER ’09) SIMRAD PART OF EK-60

ACOUSTIC NET

MENSURATION SIMRAD PI32/PI44

11 ACOUSTIC RELEASE EDGE TECH 8012A

ACOUSTIC NET

MENSURATION

HYDROPHONE SIMRAD SCANMATE

Figure 3.7.1 - Centerboard Transducers

3.7.4.5 Remove centerboard from the ship. Protect transducers from damage.

3.7.4.6 Carefully note all transducers’ existing orientation as shown in Figure 3.7.2. Carefully measure and record transducers’ alignments with reference to centerboard bottom edge and orientation. During re-installation, alignment is crucial to proper system operation. Ensure that alignments are noted so that the transducers can be reinstalled exactly as were originally installed. Remove transducers from centerboard. Protect transducers from damage, never set the face on a hard surface and do not lift by the cables.

Figure 3.7.2 - Centerboard Plan View

3.7.4.7 Inspect transducers’ mounting rings. Clean, prepare, and recoat transducer housings and mounting rings. Clean each transducer using a normal, mild, synthetic soap, water and a soft bristle brush. Only under extreme conditions use a piece of dull wood or very fine grade sand paper (by hand).

Do not use strong solvents.

Do not attempt to scrape with sheets of metal, screwdrivers or other metallic tools.

Do not use high pressure water to clean the transducers or windows

3.7.4.8 Carefully inspect each transducer for evidence of cracks, scrapes, blistering, corrosion or other anomalies that would indicate an unsound unit. Notify the COTR immediately should any of these conditions are found.

3.7.4.9 Photograph and submit a report to the COTR on each transducer. Photos should provide enough detail to clearly see the details of each transducer surface. Report should include transducer name, location, and condition remarks. Provide hard and digital copies to COTR.

3.7.4.10 Reinstall all transducers using existing fasteners in the exact orientation as were removed. Anticipate need to replace 20-percent of transducer fasteners.

3.7.4.11 Replace synthetic fairing material to present smooth finish.

3.7.4.12 Install two additional stainless steel stuffing tubes as spares for future installations with equal spacing, same as existing.

3.7.4.13 Inspect centerboard wear pads for signs of damage or excessive wear.

3.7.4.14 Install one set of shim plates, AmClyde part number 1571544, on all four sets of wear pads and guides to restore wear guide clearances. Any additional shim pack requirements or additional guide repairs will be subject of a negotiated change.

3.7.4.15 Clean and inspect pinion gear, gear rack, rollers, roller guides, spud, spud guide, spud cylinder, HPU pump, motor, brake assembly, and associated mechanical parts for signs of damage or excessive wear. Provide a condition report to the COTR with results of the inspections.

3.7.4.16 Renew all existing hydraulic flex hoses associated with the centerboard hydraulics, i.e.

HPU, pump, motor, cylinders, brakes etc. The new flex hoses shall be the same length as the existing hoses and shall have 316 stainless steel fittings. New flex hoses shall be pressure tested and tagged with engraved or embossed aluminum tags indicating test pressure and date. Conduct hydrostatic pressure tests of all new piping, fittings and flex hoses to 150-pecrent of system operating pressure and check for leaks. Correct any leaks. (Revised 9/7/10)

3.7.4.17 Deleted. (Revised 9/7/10)

3.7.4.18 Deleted. (Revised 9/7/10)

3.7.4.19 Deleted. (Revised 9/7/10)

3.7.4.20 Deleted. (Revised 9/7/10)

3.7.4.21 While centerboard is removed for inspections and repairs, inspect condition of zinc anodes, and prepare and recoat centerboard trunk with same existing coating system in accordance with Reference (b).

3.7.4.22 Reassemble all components and reinstall centerboard. Re-run the transducer cables through the cable retraction system and MCT to the original connections source. Ensure cables will not be damaged or stressed when the centerboard is raised and lowered. Follow ship’s lockout / tagout procedures to re-energize all electrical power serving centerboard. Do not re-energize equipment serving any of the transducers as damage will occur if the transducers are active and not in water!

3.7.4.23 After all work in this item is completed:

a. Measure and record critical alignment points in centerboard trunk in accordance with Reference (a). Removable deck grating is available to safely access centerboard trunk.

b. Conduct an operational test to lower and raise centerboard to maximum extent practical dockside at contractor’s facility. Ship’s Force will operate hydraulic equipment.

c. Measure and record operational hydraulic pressures, oil temperatures, and electrical

April 2010 (Revised 9/7/10) loads during these tests.

3.7.4.24 Reinstall the bridge overhead console. Reconnect cables to all equipment. Follow ship’s lockout / tagout procedures to re-energize all electrical power serving the console.

3.7.5 Quality Assurance

3.7.5.1 Deleted. (Revised 9/7/10)

3.7.5.2 Demonstrate that transducer cable service loop lengths and routing are adequate by cycling the centerboard through all positions.

3.7.6 Notes

3.7.6.1 Centerboard manufacturer information is as follows:

AmClyde HydraLift AmClyde, Inc.

240 East Plato Boulevard St. Paul, Mn 55107 651-293-4646 Phone 651-293-4648 Fax 651-293-4745 Field Service Manager: Mr. Bob Cook or Mr. Kim Tousche

April 2010 (Revised 9/7/10)

3.8 Item 308: Distribution Panel Enclosure Replacement

3.8.1 Work Description – Includes labor, material, and equipment to replace the distribution panel enclosures in the wet lab and to inspect the bulkheads in the wet lab.

3.8.2 References

(a) Drawing HB-085 FF01, “Insulation Arrangement”

3.8.3 Government Furnished Material

3.8.3.1 None

3.8.4 Requirements

3.8.4.1 In conjunction with Ship’s Force, follow ship’s Lockout and Tagout Procedures to secure/de-energize the following distribution panels in the wet lab:

a. SCP104A - Wet Lab/Controlled Environmental Room, Scientific Lab Rcpt Panel

b. SCP104B - Fish Lab/Hydrographic Lab, Scientific Lab Rcpt Panel

c. SCP110A-4 - Wet Lab/Controlled Environmental Room, Scientific Lab Rcpt Panel

d. SCP110A-5 - Wet Lab/Controlled Environmental Room, Scientific Lab Rcpt Panel

3.8.4.2 Remove all interferences from the stainless steel bulkhead panels and remove the bulkhead panels to allow for an inspection of the insulation and steel bulkheads behind the panels. Mark each stainless steel bulkhead panel location and save for reinstallation.

3.8.4.3 Inspect all of the insulation in the bulkheads and check to see if any of the insulation is wet. Provide the COTR a condition report on the found condition of the insulation. Remove the bottom two feet of insulation in all of the bulkheads and power tool clean and preserve all bulkhead areas and deck areas that are rusted. Preserve all steel areas; apply coating system STL-11. Renew the removed insulation down to one foot above the deck.

3.8.4.4 Remove the following distribution panel enclosures and replace with 316 stainless steel NEMA 4X enclosures. The new enclosures shall be the same size dimensionally as the existing enclosures. Reuse the internals of each enclosure. Panel SCP104A shall have a ground detector gauge like existing. Carefully mark all of the wires to ensure that they are reattached to the correct breakers: (Revised 9/7/10)

a. SCP104A - Wet Lab/Controlled Environmental Room, Scientific Lab Rcpt Panel

b. SCP104B - Fish Lab/Hydrographic Lab, Scientific Lab Rcpt Panel

c. SCP110A-4 - Wet Lab/Controlled Environmental Room, Scientific Lab Rcpt Panel

d. SCP110A-5 - Wet Lab/Controlled Environmental Room, Scientific Lab Rcpt Panel

April 2010 (Revised 9/7/10)

3.8.4.5 Fabricate and install new labels on the exterior of the new enclosures. Renew all of the label plates. The label plates shall be exactly like the existing plates.

3.8.4.13 Reinstall all of the removed stainless steel bulkhead panels and all removed interferences.

3.8.5 Quality Assurance

3.8.5.2 Test each of the breakers in the new enclosures to ensure they have been connected to the correct wires. Repair all deficiencies, if any.

3.8.6 Notes

3.8.6.1 The existing distribution panels are manufactured by Cutler Hammer. The number on the front label is 5676B43H01. The physical dimensions are 48" X 24" X 6" with the raised door extending an extra inch. (Revised 9/7/10)

April 2010 (Revised 9/7/10)

3.9 Item 309: Bow Thruster Inspection

3.9.1 Work Description - Includes labor, material, and equipment to take clearance readings and to inspect the bow thruster pinion/gear wheel teeth.

3.9.2 References

(a) Tech Manual HB-568 (FRV40-225-008-010), “Bow Thruster Model: 40 T3S”

3.9.3 Government Furnished Equipment

3.9.3.1 None

3.9.4 Requirements

3.9.4.1 Replace the lubricating oil in the bearing assemblies and the lube oil tank in accordance with Reference (a). Properly dispose of the old lube oil.

3.9.4.2 Perform the following dimensional checks in accordance with reference (a) and provide the COTR with a condition report on all readings:

CLEARANCES

40T3S - G673W

AS

BUILT

Recommended allowance in operation

INSPECTION METHOD

Gland Neck Ring/Shaft Sleeve Radial Clearance

0.65 2.00 Max. Upon removal of gland packing (This should be changed at each docking) check radial clearance with feeler gauges.

Rotor Tip/Linear Radial Clearance

1.82 3.80 Max. Check with feeler gauges at mid point on rotor blade on all 4 blades. Use average reading from 2 opposite sides in case shaft is leaning in dock.

Rotor/Guide Vane Hub Clearance

7.50 7.30 Min. Measure gap from bottom face of rotor boss to top of guide vane hub below.

Discharge Deflector/Guide Vane Shell Chamfer Clearance

1.00 0.95 Min. Slide arm between vanes in the deflector and check gap with feeler gauges. This will only be possible in 2 locations (Port and Starboard if deflector is facing forward and aft).

Discharge Deflector Radial Wobble about true centre

0.05 0.25 Max. Using a bar gently lever one side of the deflector. With clock gauge other side and record movement. NOTE: Do not apply too much pressure as you can see

April 2010 (Revised 9/7/10) from the table the movement should be minimal.

Pinion/Gear Wheel Tooth Clearance

0.10 1.50 - 2.00 Max. Remove pinion guard as described below. Check with feeler gauges between engaging teeth of pinion and deflector gear ring.

NOTE: In order to access the Pinion/Gear Wheel Teeth a section of the hull plating (approximately 6 inches by 4 inches) must be cut out just below the steering gear. Once the plate has been cut out you will be able to access the pinion and deflector gear teeth by removing the pinion guard (item 15) located under the ship and held by 2 M20 bolts (item 114). Upon reinstallation of the pinion guard install new fan disc washers (item 206) onto two new M20 bolts (item 114) and hold with Loctite.

3.9.4.3 Remove the existing gland ring packing, thoroughly clean the gland and shaft and provide and install new gland packing.

3.9.4.4 Remove the bow thruster steering gear motor assembly and inspect the steering shaft bearing (item 87 on the Sectional Arrangement Drawing No. 5105 WG Rev. “A” of reference (a).

3.9.4.5 Upon completion of all work reinstall the removed hull section and preserve per Basic Item 306.

3.9.5 Quality Assurance

3.9.5.1 COTR inspections.

3.9.6 Notes

3.9.7.1 None.

April 2010 (Revised 9/7/10)

3.10 Item 310: Vent Fan VFD Control Installation

3.10.1 Work Description - Includes labor, material, and equipment to install variable frequency drives (VFD) on the…