SOW_N40443-16-T-0168_ _USNS_YUKON_Hull_Survey.doc

SOW_N40443-16-T-0168 ~ USNS YUKON (T-AO 202) HULL SURVEY

1.0 ABSTRACT

1.1 Provide the labor, material, and services to accomplish tank rafting operations and ultrasonic thickness readings on ship's hull, bulkheads, deck plating, scantlings, piping, and in other areas throughout the ship in accordance with the requirements of the ABS Intermediate No. 5, Non-Double Hull Tankers in the Enhanced Survey Program (ESP).

2.0 REFERENCES/ENCLOSURES

2.1 References (Available Upon Request):

2.1.1 NAVSEA Drawing No. 101-6580055, General Arrangement Outboard Profile.

2.1.2 NAVSEA Drawing No. 101-6580056, General Arrangement Inboard Profile.

2.1.3 NAVSEA Drawing No. 101-6580058, General Arrangement of Tanks & Flats, Fwd. Fr. 60

2.1.4 NAVSEA Drawing No. 101-6580059, General Arrangement of Tanks & Flats, Aft Fr. 60

2.1.5 NAVSEA Drawing No. 101-6580164, Scantling Plan.

2.1.6 NAVSEA Drawing No. 101-6580165, Scantling Sections.

2.1.7 NAVSEA Drawing No. 101-6580166, Shell Expansion Scantlings.

2.1.8 NAVSEA Drawing No. 631-6580187 Rev C, Paint Schedule.

2.2 Enclosures:

2.2.1 List of Cargo, Ballast & miscellaneous Tanks to be Rafted

3.0 ITEM LOCATION/DESCRIPTION

3.1 Location: Various locations throughout the vessel.

3.2 Quantity: Twenty thousand (20,000) readings, approximate.

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE:

4.1.1 None.

5.0 NOTES

5.1 The thickness measurements shall be carried out by a QUALIFIED “ESP Hull Gauging company” certified by ABS. The qualifications of the company selected by the contractor shall be provided to the ABS and the MSCREP prior to the start of the gauging process.

5.2 Cleaning of cargo and ballast tanks will be completed by Ship’s Force. Contractor to provide marine chemist for gas freeing tanks safe for entry.

5.3 Ship’s Force will operate ship’s equipment and be responsible for transferring and ballasting tank levels to support raft operations.

5.4 The gauging instruments shall be calibrated on site with certified blocks acceptable to the MSCREP and ABS Surveyor.

5.5 Period of Performance:

5.6.1 Marine Chemist Period of Performance: 11 Dec 2015 - 06 Jan 2016 5.6.2 Tank Rafting Period of Performance: 16 Dec - 30 Dec 2015

5.6 Location : North Island Naval Air Station, San Diego, California

6.0 QUALITY ASSURANCE REQUIREMENTS

6.1 All work performed shall be IAW applicable ABS Standards, and accepted by the MSC Designated Port Engineer and the Chief Engineer.

7.0 STATEMENT OF WORK REQUIRED

7.1 Tank Rafting and Inspection Support

7.1.1 Contractor to provide labor to support two (2) simultaneous rafting operations and ultrasonic gauging for twenty-three (23) cargo, ballast and miscellaneous tanks (Encl 2.2.1) for ten (10) hours a day throughout period of performance noted in paragraph 5.6. Contractor shall be responsible for inflating, deflating, transporting, tending, cleaning, repairing, and positioning rafts. Contractor shall transport and set up temporary lighting and ventilation to support tank inspections.

7.1.2 Contractor to provide at least two (2) sets of temporary string lighting and ventilation equipment in order to inspect and raft two (2) tanks simultaneously.

7.1.3 S/F will provide four (4) each Achilles LT-2 Rafts and the Contractor shall procure the following material to support rafting operations and tank inspection. Contractor to turn over material to the Principal Port Engineer.

7.1.3.1 Two (2) Zodiac Standard Boat Repair Kit (P/N Z2856)

7.1.3.2 Eight (8) Total, Sterns Type III Work Life Vest.

7.1.3.2.1 Two (2) Medium (P/N 1967680)

7.1.3.2.2 Four (4) Large (P/N 196750)

7.1.3.2.3 Two (2) X Large (P/N 196768)

7.1.3.3 Four (4) Type IV Throwlable cushions.

7.1.3.4 Eight (8) Pelican mini Flasher 2130

7.1.3.5 Eight (8) Pelican LED Headlight , 2750

7.1.3.6 Eight (8) Pelican SabreLite 2010 LED Photo-luminescent flashlights

7.1.3.7 Four (4) NEMO 4300 Flashlight

7.1.3.8 One Hundred (100) Alkaline “C” Batteries

7.2 Marine Chemist Support:

7.2.1 Contractor to provide a certified marine chemist to gas free twenty-three (23) cargo, ballast and miscellaneous tanks, throughout the period of performance of tank cleaning and rafting noted in paragraphs 5.6.

7.3 Ultrasonic Thickness Measurements

7.3.1 Contractor to provide services of an ABS, ESP Hull Certified Gauging Company to perform ultrasonic thickness readings for twenty-three (23) cargo, ballast and miscellaneous tanks for the ABS Intermediate Hull Survey throughout the period of performance in paragraph 5.6 accordance with ABS requirements. Thickness readings will be accomplished in conjunction with rafting operations.

7.3.1.1 Using Ref 2.1 through 2.7 for guidance, obtain and record a total of twenty-thousand (20,000, APPROXIMATE) ultrasonic thickness readings in accordance with ABS requirements to include:

7.3.1.1.1 Hull Plating

7.3.1.1.2 Tank Tops

7.3.1.1.3 Structural Bulkheads

7.3.1.1.4 Tank Bulkheads

7.3.1.1.5 Foundations

7.3.1.1.6 Tank Structural Internals

7.3.2 Contractor shall provide adequate Ultrasonic Thickness Gauge technicians to accomplish two (2) tank inspections/rafting simultaneously, for ten (10) hours a day throughout the period of performance in 5.6.

7.3.3 Upon completion of all required thickness measurements, a type-written report shall be prepared in an ABS acceptable format and to the satisfaction of the attending ABS Surveyor within seven (7) days after period of performance end date. One copy shall be submitted to the ABS Surveyor, one copy shall be submitted to the Port Engineer, and one copy shall be submitted to the Vessel’s Master. The report shall contain:

7.3.3.1 Location of measurements, the thickness measured as well as the original thickness, and the percentage of wastage.

7.3.3.2 The measuring equipment type, calibration certification and names of the persons taking the measurements and their qualifications shall also be included in the report.

7.3.3.3 The contractor shall develop a composite drawing of location of each reading in relation to the frame numbers, seams and butt welds, plating, and internal structural members.

7.4 The Contractor shall repair all coatings disturbed during the accomplishment of this work item. The disturbed areas shall be coated with the systems specified in reference 2.1.8 using the paint manufacturer’s product data sheets for surface preparation, environmental condition requirements, and dry film thickness for guidance.

8.0 GENERAL REQUIREMENTS:

8.1 All reports are to be in Word, Excel or PDF format (as required) and submitted electronically to both the Port Engineer and the Contracting Officer.

8.2 Report(s) to be named utilizing the following naming convention:

DO Number_WI #_Report Description Enclosure 2.2.1

8 P/S Wing (5-47-1/2) = 329,780 gals each

10 P (5-55-1) = 329,064 gals

10 S (5-55-2) = 303,684 gals