TAKE-CCSI-UNDERWATER INSPECTION IN LIEU OF DRYDOCKING (UWILD) 9.21.26.docx

USNS Earhart

( TAKE 1 6 )

ABSTRACT

The purpose of this item is to conduct an Underwater Inspection in Lieu of Drydocking (UWILD) as an alternate to the Drydocking Survey.

REFERENCES

NOTE: PPE verify and update references as required for the applicable vessel prior to submission.

1.1 NAVSEA Drawing No. 801-8388071, Capacity Plan

1.2 NAVSEA Drawing No. 801-8388177, Docking Plan

1.3 NAVSEA Drawing No. 085-7488873, Shell Expansion

1.4 NAVSEA Drawing No. 085-7488875, Scantling Plan Decks and Profiles

1.5 NAVSEA Drawing No. 085-7488876, Scantling Plan - Sections

2.0 ITEM LOCATION/DESCRIPTION

NOTE: PPE verify and update location, description (Nomenclature, Manufacturer, Model, Serial number) and quantities as required for the applicable vessel prior to submission.

2.1 Location/Quantity

2.1.1 Locations: Underwater Hull US Naval Base GUAM

2.1.2 Quantity: One

2.2 Item Description/Manufacturer’s Data

3.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE: None

4.0 NOTES

4.1 The contractor and all subcontractors, regardless of tier must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTRs including but not limited to GTRs 1 through 7, 22, 23, 24, 28, and 29.

4.2 This work item is applicable to vessels who have approval from ABS to conduct ABS Rules for Survey After Construction, Part 7, Appendix, Section 1, Underwater Inspections in Lieu of Drydocking Surveys. If a vessel has any outstanding recommendations for repairs to the propeller, rudder, stern frame, underwater structure, or sea valves it may not be eligible for UWILD.

4.3 This ship contains high voltage (hv) electrical systems. Obey all posted and verbal instructions regarding safety and exclusion from high voltage areas. At no time approach, work on, or enter a high voltage area without proper authorization.

4.4 The T-AKE class electrical color coding does not follow the consistent color scheme. The ship is known to have current carrying conductors colored green, blue, black, and white. Assume all electrical cables are energized until tested and proven otherwise. Test all electrical cables to ensure they are de-energized prior to working on the item.

5.0 QUALITY ASSURANCE REQUIREMENTS: None additional

6.0 STATEMENT OF WORK REQUIRED

6.1 Conduct an Underwater Inspection in Lieu of Drydocking (UWILD) as an alternate to the Drydocking Survey using References 2.1 through 2.5 as guidance.

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

6.2.1 With assistance from the OMT REP tag out all overboard discharges, pump suctions, cathodic protection systems, jacking gear, and other systems or equipment that could affect divers.

6.3 Conduct a Pre-Survey Planning Meeting with the OMT REP, Divers Rep, Master, Chief Engineer, ABS Surveyor and OMT REP in attendance. The meeting agenda and discussion shall, at a minimum, cover:

6.3.1 The vessel’s Master, Chief Engineer, or person in charge, is to submit a signed letter to the ABS Surveyor stating the general overall condition of the vessel, level of maintenance, any known or suspected damage and cleanliness of the underwater body.

6.3.2 Confirm that the vessel has made no unapproved repairs.

6.3.3 Confirm there is no record or indication of abnormal deterioration, outstanding recommendations, or damage to underwater body, propeller, rudder, stern frame, underwater structure, or sea valves.

6.3.4 OMT REP is to provide the ABS Surveyor with the most recent gaugings and gauging report from the last Special Survey.

6.3.5 OMT REP is to provide the Shipyard Superintendent, Divers and ABS with plans and drawings showing the external details of the hull below the sheer strake, including the following items and their location:

a. All shell openings

b. All docking plugs

c. Bilge keels

d. Welded seams and butts

e. Appendages

f. Anodes, including methods of attachment

g. Rudder

h. Propeller

i. Reference points

j. Watertight and oil-tight bulkheads

6.3.6 Confirm there are hull markings or other means to orient the in-water survey and identify photographs.

6.3.7 Identify the Diving contractor, the number of divers to be employed and the type of dive equipment to be used. Discuss their experience, training and qualifications in underwater photography and NDT.

6.3.8 Discuss means of communication between the bridge, dive team and engine room (direct communications via sound powered phones are preferred).

6.3.9 Discuss procedure/plan for emergencies.

6.3.10 Provide Divers with any reference data and instructions necessary for underwater operations such as means of access to sea chests to inspect the external side of hull connections and sea valves, to rudder bearings to determine clearances of rudder bearings or to propeller shaft strut and stern bearings.

6.3.11 Discuss method of installing blanks/plugs for sea chests/valves.

6.3.12 Discuss means to take stern bearing and rudder bearing clearances.

6.3.13 Determine which tanks and cargo holds are to be internally examined as a representative sample.

6.3.14 Determine if underwater or internal thickness measurements of suspect areas are required.

6.3.15 Discuss divers means to conduct underwater nondestructive testing for fracture detection.

6.3.16 Discuss the in-water clarity (visibility) and the current or spot cleaning will be necessary.

6.3.17 Discuss vessels anticipated drafts, pier side clearance and under keel clearance at the time of the survey.

6.3.18 Discuss impact of tides and currents on divers and the examination.

6.3.19 Discuss anticipated duration of the underwater survey

6.4 Conduct an underwater examination of the entire vessel by an in-water survey company recognized by ABS using closed-circuit television with two-way communication using ABS requirements as guidance. The in-water survey is to be monitored and conducted under the surveillance of the attending ABS Surveyor and is to be supplemented with color photographic or video documentation. The ABS Surveyor is to be satisfied with the method of pictorial representation, and a good two-way communication between the Surveyor and divers is to be provided.

6.4.1 Items that must be recorded on the tape/photograph include but are not limited to:

a. Vessel’s draft

b. Time at which dive commences

c. Point of commencement

d. Time viewed

e. Conditions of hull markings

f. Random areas of plating

g. All sea chests

h. All inlets and discharges

i. Bow and stern thrusters

j. Fathometer, Speed Log and other transducers

k. Anodes and reference cells of cathodic protection system

l. Rudder(s)

m. Pintles

n. Propeller(s) to include rope guards and net and line cutters

o. Areas showing signs of damage and/or corrosion

p. Time and point of completion of the dive

6.4.2 Items that must be examined, measured and recorded include but are not limited to:

a. Confirm that the sea suction openings are clear.

b. Ascertain that the shaft seal assembly remains intact on oil-lubricated bearings.

c. Determine stern bearing clearances. Verify that the clearance or weardown is within limits on the stern bearing.

d. Determine the rudder bearing clearances and condition.

e. Determine the rudder pintle clearances and condition.

f. Verify that all parts of the pintle and gudgeon assemblies are intact and secure.

g. This work may require removal of bolted access plates, threaded plugs, and a measuring arrangement.

6.5 Hinged gratings must be opened on all sea chests to allow divers access into each sea chest to inspect the anodes, internal sides of through hull connections and sea valves.

6.6 Sea valves and their attachment to sea chests are to be examined externally, including expansion pieces in sea water cooling and circulating systems.

6.7 Examine the outside of the shell plating above the waterline and exposed portions of appendages, such as propeller, rudder and rudder bearings. Provide a small boat with operator to aid the ABS surveyor accomplish this inspection.

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

6.9 Reports

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

6.9.2 Submit three copies of a video tape with audio commentary of all external areas of the underwater hull identified in 7.4 and 7.4.1, including rudder, propeller, tailshaft, hull protective system, and all other attached appurtenances. Publish the video on DVD in a format readily accessible/playable using Windows™ software applications such as Windows Media Player, or others. Provide one copy to the OMT REP, one copy to the ship, and one copy to the ABS Surveyor.

6.10 Painting: None additional

6.11 Manufacturer’s Representative

6.11.1 Provide the services of a Diving contractor who is an ABS recognized External Specialist for conducting In-Water Surveys. The contractor is to perform all examinations, servicing, testing and photography/videography of the underwater hull in accordance with ABS, USCG and manufacturer’s requirements.

https://ww2.eagle.org/en/rules-and-resources/recognized external-specialists.html.

https://www.eagle.org/ABSEaglePrograms/es/es-search.jsp

6.11.2 Provide the OMT REP with a signed letter of qualification and copy of the ABS Certificate prior to the start of any work.

6.12 Preparation of Drawings

Provide electronic copies of all revised and/or updated technical documentation including drawings, technical manuals, service bulletins, parts lists, certification and test data associated with the work performed or parts supplied to the OMT REP.

GENERAL REQUIREMENTS: None additional 0952 - 8