USCGC POLAR STAR - MISC PIPING REPAIRS

Miscellaneous piping repairs, various locations onboard CGC Polar Star *SOW attached 1. SCOPE 1.1 Intent. This work item describes the requirements for the Contractor to renew sections of piping throughout the cutter. 1.2 Government-furnished property. None. 2. REFERENCES Coast Guard Drawings Coast Guard Drawing 400-WAGB 0103-3, Rev AE, Booklet of General Plans (POLAR STAR) Coast Guard Drawing 400-WAGB 4803-1, Rev AA, Arr Firemain 3Rd DK & Below Coast Guard Drawing 400-WAGB 4809-1, Rev R, Diagram S.T., A.E. & Overflow Tanks Coast Guard Drawing 400-WAGB 4808-21, Rev T, Arr of Wea. DK. DRN S Main DK. & Bel Coast Guard Drawing 400-WAGB 4808-6, Rev Z, Arr. Plumbing Drains 3 RD. Deck & Below 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 suitable covering to seal off and protect all non-affected surfaces/equipment and spaces in the vicinity of the work area against contamination during the performance of work. Upon completion of work, remove protective material and inspect for the presence of contamination. Clean all equipment and spaces, contaminated due to improper protection, 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). 3.2 Work Location and extent. The concerned work areas are shown in the Table 1 below. See the Coast Guard Drawing(s) above, for guidance and details. TABLE 1 - Piping Repairs Piping Location SYSTEM Size (L/Dia/Type) DESCRIPTION Gas Turbine Room (5-113-0-E) Port side Fr. 135 Firemain 6/4.5 in/CuNi 6 in vertical pipe to be renewed on Fire pump No.3 suction side. Portside Weaterdeck Fr. 166 Vent 10 in/3.5in/CuNi 10 in vertical piping to be renewed between deck and union. AUX 4 (3-171-0-E) Fr. 181 Sewage 14in/1.5/CuNi 14 in horizontal pipe to be renewed. DC Shop (1-200-2-Q) Fr. 200 Drainage 6in/4.5in/CuNi 6in horizontal pipe to be renewed 3.3 Piping repairs. The Contractor shall perform the following work: 3.3.1 In the presence of the Coast Guard Inspector, mark the sections of piping for renewal. 3.3.2 Clean the work areas where the piping repairs are needed. 3.3.3 The Contractor shall provide Marine Chemist inspection and certification, along with all required re-inspections, to ensure that the compartment is certified gas free and safe for hot work prior to any hot work. Take the necessary measures to certify each area safe for hot work. 3.3.4 Crop and renew piping as designated in Table 1 above. 3.3.5 Fabricate and install new piping for each location. Materials shall match those shown in the reference drawings. 3.3.6 Dye penetrant test each new weld connection in accordance with SFLC Std Spec 0740. Repair any cracks and retest until satisfactory. Hydrostatic testing of new welds is not required. 3.3.7 Upon completion of repairs, demonstrate that none of the new welds leak in the presence of the Coast Guard Inspector. Repair any leaking welds and retest until no leaks are present. 3.4 Restoration. 3.4.1 Touch-up preservation. The Contractor shall prepare and touch-up coat all disturbed surfaces to match existing adjacent surfaces in accordance with SFLC Std Spec 6310. 4. NOTES (see SOW attached) Period of Performance: 05AUG19-09AUG19