0021_A_CLEAN_AND_GAS_FREE_TANKS_VOIDS_AND_COFFERDAMS_REV_May_2015.doc

USNS SALVOR

(T-ARS 52)

GENERAL REQUIREMENTS

RFP NO. N32205-15-R-4002

12 May, 2015

ITEM NO. 021

CATEGORY "A"

MSC/N43D/WDD

CLEAN and GAS FREE TANKS, VOIDS COFFERDAMS and SPACES

1.0 ABSTRACT:

1.1 Clean and gas free tanks and spaces listed in this work item.

2.0 REFERENCES/ENCLOSURES

2.1 MSCLANT Standard Item 43, Cleaning and Gas Freeing Fuel Oil Tanks and Spaces, revised 2 April 98.

2.2 NAVSEA Dwg# 801 5762822, “Tank Sounding Tables”

2.3 NAVSEA Drawing, Compartment Areas & Volumes, #5763488.

2.4 NAVSEA Drawing Capacity Plan Located on ship NAVSEA Drawing Trim & Stability Booklet, Located on ship.

2.5.NAVMED P-5010-6, Manual of Preventive Medicine, Chapter 6, Sections IV and XI (Disinfecting and Water Testing Requirements) Rev 1990, avail on internet

2.6 NSF/ANSI 61-2010a, Minimum health effects requirements for the chemical contaminants and impurities that are indirectly imparted to drinking water from products, components, and materials used in drinking water systems.

3.0 ITEM LOCATION/DESCRIPTION

3.1 The following tanks and spaces are to be dealt with:

Tanks:

NAME

FRAME (LOC)

1. Clean Ballast Tk

4-B-0-W

2. Clean Ballast Tk

4-78-0-W

3. Clean Ballast Tk

4-53-0-W

4. Clean Ballast Tk 3-100-0-W

5. Potable Water No. 1

4-27-1-W

6. Potable Water No. 2

4-27-2-W

7. Potable Water No. 3

4-27-3-W

8. Potable Water No. 4

4-27-4-W

3.2 Miscellaneous Spaces:

1. Shaft Alley

3-70-1-E

2. Shaft Alley

3-70-2-E

3. Bow Thruster and Refr Mchry Rm 2-11-0-E

4. Steering Gear Rm

2-100-0-E

5. Windlass Mchry Rm

1-6-0-E

6. FWD Generator Rm/Bilge

3-16-0-E

7. Aux. Mchry Rm/Bilge

3-40-0-E

8. Main Mchry Rm/Bilge

3-53-0-E

9.

Bow Thruster Access Trunk 4-11-0

10 . Stern Tube (S)

(Inside 4-78-0)

11. Stern Tube (P)

(Inside 4-78-0)

Towing Gear:

1 Chain Locker

3-78-1

2 Chain locker

3-78-2

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES: None

5.0 NOTES:

5.1 A certified Marine Chemist shall be used for all inspection and certification. Certificate signed by the Marine Chemist will be posted for any space before regulatory body and MSC personnel enter the space.

5.2 There is no known hazardous waste but, if discovered, shall be managed in accordance with Item 023 of this work package.

5.3 All wastes generated in the accomplishment of this item shall be disposed of in accordance with all Federal, State and local requirements. If this item results in the generation of hazardous waste then the costs shall be claimed under Item 023.

5.4 All bilge oily water shall be pumped to a contractor provided barge or facility and disposed of in accordance with all Federal, State and local requirements.

5.5 The contractor and all subcontractors, regardless of tier, must consult the General technical requirements to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors, regardless of tier, must comply with all applicable GTR’s, including but not limited to GTR’s: 1-7, 28, 29.

5.6 The contractor and all subcontractors regardless of tier are advised to review all 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 001.

5.7 For bidding purposes, Contractor should use the 70% capacities for the fuel tanks listed in paragraph 2.2.

5.8 While these spaces are certified gas free, the ships force may be performing hot work completing maintenance work outside the scope of this work package.

6.0 QUALITY ASSURANCE REQIREMENTS:

6.1 The Chief Engineer shall be present for soundings of all tanks and shall attest to quantity of fuel oil removed.

7.0 STATEMENT OF WORK REQUIRED

7.1 Accomplish the requirements of reference 2.1 and 5.0 to tanks and spaces delineated in paragraph 3.0.

7.2

Arrange for any ABS inspection for the ballast tanks listed in paragraph 3.1 Contractor will put together a schedule of tanks to be open and closed . Provide a weekly update of tank status.

7.3 The contractor shall provide a slop barge for residual fuel/oils/bilge water and pump down to low suction vice ship’s force, see para. 5.0 Notes.

7.4 Upon completion of all Potable Water Tank repairs (Ships Force) , close up all tanks with new gasketing and CRES hardware, and Super Chlorinate.

7.6.1 Fill the Potable Water Tanks and system with clean fresh drinking water and Super chlorinate using ref 2.5 & 2.6.

7.6.2 Task licensed, testing laboratory to conduct analytical analysis to assure water meets requirements of reference 2.5 & 2.6.

7.6.3 Task licensed, testing laboratory to sample water and analyze for purge able hydrocarbons per Method EPA 602, 40 CFR, Part 136. Results to be below maximum allowable limits in Reference 2.5

7.6.4 Report results of bacteriological and hydrocarbon analyses to the MSC Representative within 72 hours of sampling.

7.5 Upon Completion of all ABS inspections, close up Ballast tanks with new gaskets and CRES hardware.

8.0 GENERAL REQUIREMENTS: none

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