Buildings 115 118 400 Steam Repair Statement of Work .pdf

REPLACE STEAM LINE B115,118,400

552-25-512

Scope of Work

The contractor shall provide all labor, materials, equipment, and supervision necessary to repair the steam lines at Buildings 115,118,400. at the Dayton VAMC 4100 W. Third Street, Dayton, OH 45428.

This will include the following:

Removal and replacement of asphalt and concrete, installation of new precast sidewalk caps, removal and replacement of 4” High Pressure Supply (HPS) and 2”High Pressure Return (HPR) steampipes, removal and replacement of all stanchions/ hangars/ rollers/ expansion joints, new insulation on new steam pipes, installation of new sump pump with electric to B115, cleaning of shallow trenches, replacement of direct bury line, all testing of newly installed high pressure steam pipes, new ventilation turbines (3). Contractor must field verify all measurements.

All stanchions, pads, hangars, rollers, concrete pads, expansion joints shall match existing.

Contractor shall perform radiographic examination of 50 percent of the first 10 welds made and 10 percent of all additional welds made. The VA reserves the right to require testing on additional welds if more than 25 percent of the examined welds fail inspection. (TIL 23-22-13 para 3.2)

All connections for removal/ installation will be inside the buildings. The connections (t’s and or gate valves) at the current steam pipes will be replaced with new. Contractor to field verify all sizes.

Minor excavation (4’-8’) will be required at all buildings, road replacement must be IAW all Ohio

Department of Transportation specifications.

Contractor is required to provide security fencing and silt fencing around excavation sites.

Contractor is required to provide all grading and grass seeding (3”) after completion of all excavation work.

The Contractors hours of operation shall be from 0630-1630 Monday through Friday except for Federal

Holidays. Contractors may work Federal Holidays by submitting to the Contracting Officer the details of work to be performed, all safety assets, hours of operation, and staff that will be on sight.

a. B400 new steam pipes shall be schedule 80 black-iron with welded joints. There is approximately 700 linear feet of HPS and HPR that the contractor must field verify. The contractor will have two (2) road crossings in this excavation. One is approximately 38 linear feet and the other is approximately 50 linear feet. The replacement of both road sections must be IAW all Ohio Department of Transportation specifications. Contractor to verify all measurements. All bolts are to meet ASTM A193 Bolts specifications. (TIL 23-22-13 para 2.2 sect

B)

The three (3) new ventilation turbines will be placed throughout this route.

All new insulation in non direct-bury steam lines shall be 2 ½” foam glass insulation for steam and 2” foam glass insulation for condensate return with aluminum jacket.

Contractor will be required to move existing concrete lids for access to steam lines. Contractor shall repair areas of trench walls that are failing, and place lids on trench boxes upon completion. All lengths shall be field verified by the contractor.

b. B118 new steam pipes shall meet Tri-Con 300 specifications for direct-bury steam lines and condensate return. All pipes shall be schedule 80. There is approximately 105 linear feet of HPS and HPR that the contractor must field verify. All bolts are to meet ASTM A193 Bolts specifications.

c. B115 new steam pipes shall be schedule 80 black-iron with welded joints. There is approximately 95’ linear feet of HPS and HPR that the contractor must filed verify. ASTM A193

Bolt specifications.

Contractor will be required to move existing concrete lids for access to steam lines. Contractor shall repair areas of trench walls that are failing, and place lids on trench boxes upon completion. All lengths shall be field verified by the contractor.

The new sump pump with electric to B115 will be placed in the existing trench box. The contractor shall cut into the existing box, install 14” tile with gravel base for the sump pump to sit on. Electric to B115 can be placed in the trench box.

Contractor to provide submittals on all piping, insulation, sump pump, and ventilation turbines. (TIL 23-

22-13 para 1.4 and 1.5)

Period of Performance - Contractor shall have all work completed in 120 calendar days from receipt of notice to proceed.

For General Specifications see attachments, all specifications can be found in the VA TIL at https://www.cfm.va.gov

Bolts shall be high strength steel ASTM A193/A193M, Grade B7. Nuts shall be ASTM A194/A194M