0901_SHAFT SEAL INSPECTION - Rev 1.pdf

USNS Matthew Perry

( TAKE 9 )

SSU25-013

ITEM NO. 0901 CATEGORY "A" 0202-02-20

SHAFT SEAL INSPECTION MH-GUAM

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1.0 ABSTRACT

The purpose of this item is to inspect the ship’s shaft seal closed loop system.

2.0 REFERENCES/ENCLOSURES

2.1 Available onboard

3.0 ITEM LOCATION/DESCRIPTION

3.1 Location/Quantity

3.1.1 Location: Underwater Hull

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE: None

5.0 NOTES

5.1 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.

5.2 The contractor and all subcontractors regardless of

tier are advised to review other work items under this contract, Many of the definitions relating to performance of this work item are found in Work Item 001.

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5.3 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.

5.4 THE T-AKE CLASS ELECTRICAL COLOR CODING DOES NOT

FOLLOW 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.

5.5 After the discussion with the ship, in-port schedule

had changed. There is requirement to conduct a sea trial either Sunday or Monday. The shaft seal inspection is the pre-requisite for the sea trial and has to be done tomorrow, 22Feb2025.

6.0 QUALITY ASSURANCE REQUIREMENTS: None additional

7.0 STATEMENT OF WORK REQUIRED

7.1 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.

7.2 Conduct a Pre-Dive Planning Meeting with the Diver’s

Representative, Master, Chief Engineer and OMT REP. The meeting agenda and discussion covers, at a minimum:

7.2.1 Discuss means of communication between the

Bridge, Dive Team, and Engine Room.

7.2.2 Discuss procedures/plans for emergencies.

7.2.3 Discuss the vessel’s anticipated drafts, pier-

side clearance, and under-keel clearance at the time of the

SSU25-013

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7.2.4 Discuss impact of the tides and currents on

divers and the examination.

7.2.5 Discuss anticipated duration of the underwater

work.

7.3 Inspect the ship's shaft seal closed loop system.

Inspect the external piping, fittings, and pipe hangers exterior of the hull aft of shaft alley Frame 85 to the stern tube.

7.4 Contractor will inspect all welds, check for cracks in

all piping sections.

7.5 Inspect the Stern Tube Aft Seal Adapter Plate exterior

of ship at stern tube for any damage to welds.

7.6 Report material condition of ship's Stern Tube System

for leaks and overall material condition.

7.7 Inspect protective covering of the STFW system aft

seal supply piping external to the hull for damage.

7.8 Maintain workspaces in a clean condition during and

upon completion of the work requirements. Prevent contamination of any adjacent equipment and spaces.

7.9 Reports

7.9.1 Submit one (1) electronic copy in Portable

Document Format (PDF) and photographs.

8.0 GENERAL REQUIREMENTS:

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8.1 Location: Tango Pier

8.2 POP: 22 Feb 2025

8.3 POC: Ed Madrelino edwin.s.madrelino.civ@us.navy.mil

Tel: (671)339-6040/671)480-8085 mailto:edwin.s.madrelino.civ@us.navy.mil