Attachment_to_Amendment_0002_-_Revised_Work_Item_O-20.doc

63110_0613_FLT

REC_12314_FLT_«REC»

WORK ITEM 20: Tanks (Water Mist), Preserve “100%”-Optional

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to prepare and preserve 100% of the following tank(s):

1.2 Government-furnished property.

None.

2. REFERENCES

Coast Guard Drawings

Coast Guard Drawing 750 WMSL 85-04 Rev B, Tank Capacity Curves ( WMSL - 750 Only ) (ASC085013)

Coast Guard Drawing 750 WMSL 100-1, Rev L, General Arrangements (ASC100001)

Coast Guard Drawing 750 WMSL 167-001, Rev G, Manhole List Installation and Fabrication Details Ship Wide (ASC167001)

Coast Guard Drawing 750 WMSL 801-001, Rev B, Booklet of General Plans (ASC801001)

Coast Guard Publications

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2014, General Requirements Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2014, Requirements for Preservation of Ship Structures

Other References

The Society for Protective Coatings (SSPC) Paint Application Specification No. 1 (SSPC-PA Guide 1), 2004, Shop, Field, And Maintenance Painting of Steel

The Society for Protective Coatings (SSPC) Surface Preparation Specification No.3 (SSPC-SP 3), 2004, Power Tool Cleaning

3. REQUIREMENTS

3.1 General. The Contractor shall refer to Coast Guard Drawing 750-WMSL-100-60 for guidance

3.1.1 CIR.

None.

3.1.2 Tech Rep.

Not applicable.

3.1.3 Protective measures. The Contractor shall protect components, spaces, and equipment in accordance with SFLC Standard Specification 0000 paragraph 3.3.3 (Vessel component, space and equipment protection.

3.1.4 Interferences. The Contractor shall handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.1.5 The Contractor shall perform work on this item in conjunction with the Work Item: Water Mist System, Annual Inspection and Biannual Discharge Test, Perform.

3.1.6 In-process quality control measures. The Contractor shall abide by all the safety, preservation, and quality control requirements specified in SFLC Std Spec 0000, paragraph 3.2.4.2 (In-process QC measures for “critical-coated” surfaces).

NOTE

Surfaces being preserved are considered “critical-coated surfaces”.

3.2 Tank content removal. The Contractor shall remove and dispose of all tank contents in accordance with all applicable Federal, State, and local regulations. The Contractor shall notify the COR prior to filling or draining the tank(s).

3.3 Surface preservation. The Contractor shall accomplish the following tasks for the tanks listed in paragraph 1.1 (Intent):

3.3.1 Remove and retain the tank manhole cover(s).

3.3.2 Accompanied by the Coast Guard Inspector, inspect tank internal surfaces. Mark damaged areas for coating repairs.

3.3.3 Power tool clean the damaged areas to a tight paint film in accordance with SSPC SP-3. Feather all edges. Roughen adjacent surfaces with sandpaper to provide a proper adhesive surface

3.3.4 Solvent wipe the prepared areas in accordance with SSPC-SP 1.

3.3.5 Paint the prepared areas with 2 coats of surface tolerant epoxy paint. Each coat shall be 5-6 mils dft. Select finish/top coat color to match existing.

3.3.6 Install space heaters in each tank to aid in curing paint. Ventilation shall be a continuous airflow with a minimum of one complete air change every four (4) hours.

3.3.7 Prepare and coat all manhole cover external surfaces to match existing adjacent surfaces, using the system specified for “Decks, Metal Interior and Non-Skid Areas (Steel and Aluminum Decks - Wet Areas, Food Preparation Areas, Exit Areas, and Areas Subject To Condensation)”, in SFLC Std Spec 6310, Appendix B (Cutter and Boat Interior Painting Systems). Select finish/top coat color to match existing adjacent surfaces.

3.3.8 Only one storage tank can be out of service at a time. First tank must be fully cured and put back in service prior to tag out of second tank.

NOTE

Typical curing times are at least 7 days, and range up to 14 days (or longer), depending on the paint selected and environmental conditions. Curing time shall be based on paint manufacturer’s recommendations for the specific application.

3.4 Inspection. After surface preparation and before coating application, the Contractor shall visually inspect all interior surfaces; including, but not limited to bulkheads, floor and overhead plating, structural members, manhole cover surfaces, fasteners and gasket seating surfaces. Submit a CFR including the following, as applicable:

· Structural condition

· Inaccessible areas

· Sounding tube and striker plate condition

· Suction and discharge piping.

3.5 Tank closing. The Contractor shall ensure that the tank(s) remain open for at least 24 hours after completion of the tasks specified above. Notify the COR at least 24 hours prior to closing the tank(s). After satisfactory inspection by the Coast Guard Inspector and after all authorized repairs, accomplish the following:

· Close tank manhole cover(s) with new gasket material conforming to ANSI/NSF 61 and new stud cotton grommets (where applicable).

· Renew all fasteners.

4. NOTES

This section is not applicable to this work item.