SOW_Fall_Piping_Repairs.docx

PIPING REPAIRS – FY15 FALL VOYAGE REPAIRS

ABSTRACT – Emergent Repairs 8 inch SW Overboard Line has wasted section at flange that needs renewal and hull blank to repair where it is leaking 4 inch SW Overboard Line (Cu-Ni) wasted section at flange that can be isolated from the sea need repair where it is leaking Weather Deck Port and Stbd Sides isolation valves that no longer seal and need to be renewed to pass USCG mid-term inspection

LOCATION AND DESCRIPTION

Location: See listed areas below in the Statement of work Description: See description of work in Statement of work

STATEMENT OF WORK

CLIN No 0001 --SR No: 5190715 LEAK – 8 INCH SALTWATER OVER BOARD LINE

ABSTRACT

Contractor to supply the services of licensed Underwater Diver to install a cofferdam over the 8 inch line as there is no isolation between the leak and the ship’s hull opening.

Contractor will remove the holed piping spool and clean and prepare it for ABS inspection and repair as directed by ABS Final repair to be pressure tested and witnessed be ABS prior to the time the repaired piping spool is reinstalled using new gaskets and fasteners

LOCATION AND DESCRIPTION

Location Approximately frame 120, 3rd deck Engine Room, Aft of #1 A/C Chiller.

This is slightly below waterline at full draft.

Description Leak is on 8” elbow between Sea Valve and Overboard Penetration.

ASW overboard hull penetration elbow wasted at weld to flange adjacent to overboard isolation

STATEMENT OF WORK

1) Contractor to furnish the services of a licensed Diver to fit a cofferdam on the exterior hull of the ship to protect the ship from flooding once the piping is opened for repairs

2) Contractor to open and clean the piping for inspection by ABS and Chief Engineer and COR.

3) Contractor to gauge the entire piping spool between the flange where the leak is and the hull penetration to determine remaining thickness of the existing piping. Gauging to include 4 locations (top and bottom and sides) each 12-18 inches or as required by ABS

4) Contractor to blank off any opened lines during all non-working hours to prevent flooding for the duration of the job

5) If repair can be done in place, Contractor to remove as much weld as necessary to allow a proper welding repair as approved by ABS

6) If the repair cannot be done in place, Contractor to insert new Sch 80 pipe of similar size with approved materials per ABS specifications.

7) Contractor to provide an ABS-approved Welder with Certificates that are to be available for inspection at anytime during the course of the repairs. Contractor to be prepared to supply Chief Engineer and/or ABS with material specifications and certificates needed to complete the job.

8) Contractor is responsible for whatever testing is necessary for ABS including NDT or pressure testing. Exact process to be determined at the time of inspection and before repairs if possible.

9) Upon completion of the repairs, all removed flanged fittings to be reassembled using new gaskets and fasteners (stainless).

10) Any disturbed paint to be scrapped and wire brushed to clean metal surface to receive new Contractor supplied prime and paint using Ship’s paint type and schedule CLIN No 0002 -- SR No 5190716 - Leak in 4 inch Seawater Elbow Overboard Chill Water /Seawater Heat Exchanger

ABSTRACT

Contactor to renew a leaking 4 inch elbow on the Saltwater Overboard line from the Chill Water- Seawater Heat Exchanger. Elbow can be isolated and removed for repairs by welding by a ABS Certified Welder with experience welding Copper-Nickel pipe. Final repair to be tested to 150% normal working pressure as witnessed by ABS Surveyor

LOCATION AND DESCRIPTION

Location:

4 inch copper nickel elbow on saltwater overboard line from the Chill Water /Saltwater Heat Exchanger located on the Port side mid-level of the Engine Room Description:

Isolate pipe and remove for repair. Blank off all piping during non-working hours Leak in 4” copper nickel elbow on Chill Water to Sea Water Heat Exchanger. ASW elbow at A/C ASW/Chill water "swamp" coupler wasted away at weld. Renew Cu-Ni elbow and adjust threaded flange above ball valve isolation as it is leaking at threads.

Reinstall and test for ABS to agreed upon pressure or bench test if acceptable to ABS

STATEMENT OF WORK

Contractor responsible for all labor and materials and transportation and rigging necessary to complete this work item Contractor to have an ABS-certified welder with 5 years of experience welding Copper–Nickel piping. Proof of this must be made available at time of solicitation and anytime ABS or COR requires same.

Contractor to isolate the affected 4 inch elbow with Chief Engineer or his designee in attendance to make sure that engine room is not flooded when the line is opened to remove the elbow. Contractor to install flanges on any open line during non-working hours to prevent flooding engine room.

Contractor to remove elbow and use it as a sample for fabrication of a new elbow with same flanges type and size and pipe thickness and copper nickel material. Elbow to be welded both inside and outside at flange connections.

Contractor to repair threaded flange above ball valve Isolation as designated by Chief Engineer If acceptable by ABS, bench test the new elbow to 100 psi prior to installation. If ABS will not approve this test, Contractor must make arrangements to test the new elbow in place.

Contractor to use all new gaskets and stainless steel fasteners to make up new elbow to the system.

Contractor be available when the system is put back into operation to correct any problems with the new piping or fit up CLIN No 0003 – SR No 0301937 – Weather Deck Valves Renew

ABSTRACT:

Valves on the weather deck aft (After Main Deck Port and Stbd sides ) need to be renewed to pass upcoming USCG mid-term inspection

LOCATION AND DESCRIPTION:

Location:

Port and Starboard side Main Deck Aft – piping connnection valves – 22 total Description:

Contractor to supply and install using new gaskets and fasteners all valves on the weather deck – after main deck port and starboard sides

STATEMENT OF WORK:

Contractor to supply and install new valves on the fueling, water, sewage, ballast and bilge and steam connections on the port and starboard sides of the after main deck.

All new valves to be of the same type and design as those presently installed and must be surveyed and identified at the time of the ship check to insure proper replacement.

Valve materials and type vary from 1-1/2” to 6” and most are rising stem gate valves and some are plug valves. All questions as to the material and pressure rating to meet the discretion of the regulatory application and/or Chief Engineer. 22 valves total must be renewed All new valves to be fitted up using new gaskets and stainless steel fasteners Actual change-out of the valves to be done in coordination and approval with the Chief Engineer. Some of the lines are in use and need to be isolated by the crew to protect the ship and the contractor CLIN No: 0004 – Supplementary Labor 30hrs @ $____/Hr = CLIN No: 0005 – Supplementary Material $6,600

DELIVERABLES

1) Pictures of the piping before repairs and after repairs – Electronic copies send to Ship’s Chief Engineer and COR

2) Any new piping or fitting specifications supplied by Contractor to complete the job

3) NDT results for gauging the piping

4) Contractor to supply a list of piping and materials used to fabricate the new elbow and the type of welding used for fabrication. Job will not be considered complete with out this deliverable

5) List of valves and their specifications for use during ABS and USCG inspections