Item No. 0909 Category a Usmmi/Mll/Rcs

USNS MARY SEARS

T-AGS 65

Solic. No.: MLL-16-T65-0001

DRYDOCKING & UNDOCKING August 31, 2016

ITEM NO. 0909 CATEGORY “A” USMMI/MLL/RCS

Revision X

PRESURE TESTING OF UNDERWATER APPENDAGES

1.0 Abstract:

1.1The item provides for labor and material required to open, drain, air test and refill various underwater appendages.

2.0Reference/Enclosure: None

2.1Photos of areas to be tested.

Photo 1
Photo 2
Photo 3
Photo 4
Photo 5
Photo 6

3.0Item Location/Description:

3.1Location:

3.1.1Port and Starboard bubble fences.

3.1.2Bow thruster propeller nozzle

3.1.3 Skeg, skeg extension and Wings

4.0USMMI Furnished Equipment/material/services: None

5.0Notes:

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 1-7, 22, 23, 28, and 29. GTRs can be obtained from the following URL:

5.2 The contractor and all subcontractors, regardless of tier are advised to review other work items under this contract to determine their effect on the work required under this work item. Many of the definitions relating to performance of this work item are found in Work Item 0001.

5.3 The contractor shall comply with all requirements of equipment tag-out program as established by COMSCINST 3540.6, as amended, section 15.2.2, Engineering Operations and Maintenance Manual. The Chief Engineer is to administer the program. Prior to the start of work, the contractor shall contact the USMMIREP and / or the Chief Engineer to coordinate the implementation of the tag-out program for the entire performance period of this item. The prime contractor shall be responsible for compliance by both prime and subcontractor personnel.

6.0 Quality Assurance Requirements:

6.1All Inspections and tests shall be performed in the presence of contractor’s representative, Port Engineer, ABS Surveyor and USCG Inspector, as applicable. Notify the Port Engineer and regulatory bodies 24 hours prior to the scheduled inspections and tests.

7.0 Statement of Work:

7.1After the underwater hull has been HP washed, the Contractor shall remove all bottom plugs from the following underwater hull appendages:

A.Bow Thruster Propeller Nozzle

B.Port Bubble Fence

C.Starboard Bubble Fence

D.Upper Skeg

E.Lower Skeg Extension

F.Skeg Stabilizers

7.2The Contractor will perform a static air test of all appendages at a pressure of no more than 2 psi. Each air test shall remain static for no less than 5 minutes.

7.3Following successful completion of the air test, the lower plugs shall be reinstalled and the appendage shall be filled to ¾ capacity with fresh water. The final ¼ capacity shall be filled will a Contractor provided Float Coat product. Afterwards, the appendage is to be drained and all hull plugs shall be reinstalled and vacuum box tested.

7.4 Tests/Inspections/Reports/deliverables.

7.4.1Inspection – Provide the latest gauge calibration certificate for the air test equipment.

7.4.2Inspection – Allow for ABS to attend all pressure testing.

7.4.3Report – Furnish a report showing the appendage, test pressure and duration.

7.5No additional work is to be accomplished without a Condition Report and prior written approval by the USMMI Port Engineer. The USMMI Port Engineer is the single point of contact authorized to address technical questions.

7.6Upon completion, provide the Port Engineer three copies of the report describing details of results endorsed by contractor’s representative, Port Engineer ABS Surveyor and USCG inspector.