S19_XXX_52000_PpngRnwl_755.doc

S19_XXX_52000_PpngRnwl_RTK _0519_755 WORK ITEM 1: Auxiliary Sea Water Piping, Renew

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to repair Auxiliary Sea Water (ASW) piping, located in the Aft Main Machinery Room (Compartment 5-52-01-E).

1.2 Government-furnished property.

None.

2. REFERENCES

Coast Guard Drawings

Coast Guard Drawing 750-WMSL-520-001, Rev H, Seawater Cooling System Diagram Coast Guard Drawing 750-WMSL-520-010, Rev G, Salt Water Cooling System Unit 2310

Coast Guard Publications

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2014, General Requirements

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2014, Welding and Allied Processes

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

Other References

None

3. REQUIREMENTS

3.1 General.

3.1.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph(s):

None.

3.1.2 Tech Rep.

Not applicable.

3.1.3 Protective measures. The Contractor shall furnish and install all protective coverings to seal off and protect all non-affected vessel's components, equipment, and spaces near the work area against contamination during the performance of work. Upon completion of work, the Contractor shall remove all installed protective measures, inspect for the presence of contamination, and return all contaminated equipment, components, and spaces to original condition of cleanliness

3.1.4 Interferences. The Contractor shall handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences). Known interferences include, but are not limited to the following:

· Decking

· Piping

NOTE

A verification ship check by the contractor prior to bidding is recommended to identify additional interferences and the amount of space available for pipe welding & repair. For ship check, the contractor shall contact Port Engineer.

3.1.5 Gas Free. The Contractor shall be responsible for ensure the work has been and gas free, by a certified Marine Chemist, Industrial Hygienist or Equivalent. The work shall be certified by the Marine Chemist, Industrial Hygienist or competent person every 24 hours while hot is be completed.

3.2 Fluid handling. The Contractor shall remove and dispose of removed fluids from the affected piping system, in accordance with all applicable Federal, state, and local regulations.

WARNING

Do not drain ANY fluids, including fresh water, into any space, bilge, or exterior location

3.3 Piping repair. The Contractor shall repair the ASW piping connection between the forward port line shaft bearing discharge piping and the starboard overboard discharge piping. Area of leak has been temporarily patched by Ship’s Force. Details are provided in Coast Guard Drawings 750-WMSL-520-001 and 750-WMSL-520-010.

3.3.1 Verify ASW piping to be repaired with Ship’s Force prior to beginning repair.

3.3.2 All welding shall be in accordance with SFLC Std Spec 0740.

NOTE

The Contractor shall, at no additional cost to the Government, perform NDE in accordance with SFLC Std Spec 0740 in lieu of Hydrostatic test to all newly installed welded piping joints in accordance with applicable sections in SFLC Std Spec 0740. The choice between these alternatives is solely the Contractor’s and should be based on his evaluation of the costs involved.

3.4 NDE. The Contractor shall perform NDE of the newly installed piping in accordance with SFLC Std Spec 0740, Appendix C.

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.5 Hydrostatic test.

After all authorized repairs, the Contractor shall hydrostatically test all new and disturbed piping and components of the window washer fluid system in accordance with SFLC Std Spec 0740, Appendix C, Hydrostatic Test. Ensure zero leakage from or permanent deformation of pressure-containing parts by repairing all leaks, deformations, and discrepancies. Submit a CFR.

3.6 Operational test, post repairs. After completion of work, the Contractor shall thoroughly test, in the presence of the Coast Guard Inspector and demonstrate all items or shipboard devices that have been disturbed, used, repaired, altered, or installed to be in satisfactory operating condition. Submit a CFR.

3.7 Touch-up preservation, general. The Contractor shall prepare and coat all new and disturbed exterior and interior surfaces, as applicable, to match existing adjacent surfaces in accordance with SFLC Std Spec 6310, paragraph 3.1.13 (Touch-ups and minor coating repairs).

4. NOTES

This section is not applicable to this work item.

�Space (AMMR) needs to be gas freed and certified for hot work. S/F is unable to certify for contractor. S/F will clean the surrounding bilges to be best ability to ensure we pass the gas free test. Installed ventilation can be used during hot work to remove fumes. Small exhaust fan with trunks might be required to remove fumes from the immediate surrounding area.

�I’m OK with draining sea water into the bilge. I would, however, prefer that contractor sets up an oily waste offload (picking up associated costs). We can estimate it to be 3000 gallons to be on the safe side (there is going to be a lot of water in those pipes once we break flanges open).

If LRE is in the pinch and funding is short, s/f can set up and fund the offload. This is the least preferable option.

�Temp patch should be listed in the interferences list. Belzona and synthoglass will be difficult to remove and might require pipe cutting/replacement.

�This might be problematic as system can’t be isolated. NDT + op test will be sufficient.