B09_Attachment_6_R1_Boiler_Replacement_SOW_Rev_1_0001.docx

The Columbia Environmental Research Center (CERC) located at 4200 New Haven Road, Columbia, Missouri has a requirement for replacement of two Lochinvar boilers, model # KBN-501 and the installation of a coalescing water/dirt separator. The existing boilers have failed as a result of poor water quality.

The coalescing water/dirt separator comparable to Westermeyer Model WAC2F Caleffi NA546080A, 3inch is required to prevent future premature failures from poor water quality. Water is received from a local Public Water District and is treated by a local water treatment firm but the solids content of the water is high and is causing early heat exchanger failures in these high efficiency condensing boilers.

Replacement equipment shall be brand name or equal to the Lochinvar Knight KBN-501 boilers that are in place so they can be plumbed in quickly and without additional costs for rerouting supply water piping.

Current system data: Two Lochinvar Knight Boilers:

Lochinvar Model KBN-501; Serial numbers: 1820 110385063 and 1818 110177770

Input: 500,000 BTU/H Minimum Input: 100,000 BTU/H Output: 451,0000 BTU/H Maximum inlet gas pressure: 14 IN/WC Minimum inlet gas pressure: 4 IN/WC Manifold pressure: -0.2 IN/WC Maximum Water Pressure: 160 psi Maximum Heating Temperature: 210° F 98.8° C For use with Natural Gas Factory equipped for operation at 0 to 4,500’ above sea level

The existing boilers are 16” (40.6 cm) wide, 42” 106.6 cm) tall, and 35” (88.9 cm) deep. The existing boilers are set on an elevated concrete pad in the mechanical room and plumbed in meeting the minimum required manufacture’s service clearance recommendations. There is very little space for altering the existing inlet and outlet water lines or the existing vent piping. Replacement boilers must fit in the existing space and contractors are cautioned that there is extremely limited space for altering the existing configuration.

Work shall include the removal and proper disposal of the existing boilers and air separator and complete installation and performance testing of two new gas fired boilers. The contractor shall provide all accessories necessary to complete this boiler replacement project. The contractor shall remove the existing Taco air control and provide and install a new coalescing water/dirt separator. The contractor is responsible for any piping modifications necessary to install the coalescing separator. The separator shall be a high velocity air and dirt separator designed to eliminate entrained air and separate debris associated with start-up and maintenance of hydronic systems. The separator shall be constructed in accordance with the most recent addendum of Section VIII, Division 1 of the ASME Boiler and Pressure Vessel Code.

Controls for the boilers are integrated to the building automation system. The automation controls system is AutomatedLogic™. The contractor shall ensure that the automated controls are fully functional prior to acceptance of the project by the Government. Providing Lochinvar KBN-501 boilers will eliminate the necessity for modification to the existing automated controls.

Deliverables:

The contractor shall remove and dispose of two existing hot water boilers and an existing air separator. Equipment and components removed shall be recycled to the maximum extent practicable.

The contractor shall provide and install two new hot water boilers equivalent in heating capacity to the existing boilers. The contractor shall provide and install a new air/dirt separator with associated piping modifications as necessary.

The contractor shall provide start up and verification of proper operation of the new boilers and air/dirt separator.

The contractor shall provide operators manuals (minimum of 2) and training on the boilers operation to a minimum of two CERC employees.

The contractor shall provide a minimum warranty of 1 year parts and labor plus the standard manufacturer’s warranty.

General Conditions:

The existing boilers are located in the mechanical room of a large research building on ground level. Access is through a 4’ (1.2 meter) doorway.

The contractor shall be responsible for demolition of existing mechanical aspects of the HVAC system which will be removed to make room for retrofit equipment. Disposal shall be in accordance with all local, state, and federal regulations.

The contractor shall perform the work during NORMAL hours only. Exceptions shall be requested a minimum of 48 hours in advance. Contractor shall minimize to the maximum extent possible the period of time for boiler installation. The specified time of day in which the work may be performed is:

Weekdays (Monday-Friday) from 7:00 a.m. to 4:30 p.m.

Work shall not be completed on Federal holidays.

The contractor shall perform all work in accordance with all Federal, State, and local laws, codes, and regulations in connection with the execution of the work required.

A pre-construction conference will be scheduled after contract award. The contractor is requested to provide a written schedule for the work. The schedule shall indicate the dates the contractor and/or subcontractors will be on site. The schedule shall indicate the start date and completion date. When preparing the schedule, the contractor shall consider lead times for material procurement, and shall consider the permitted hours of work indicated in Time of Work Performance clause above. The contractor shall notify the USGS TECHNICAL LIAISON immediately if any anticipated on-site date is expected to change from the original schedule. The conference building is used on a first-come-first-serve basis for various activities such as instructional classes and scientific presentations. Schedules must be adhered to in order to minimize conflicts that may affect the contractor’s access to the work site.

The contractor shall maintain the work site in a clean and neat manner. All materials to be discarded shall be removed from the building and grounds at the end of each work day. There is inadequate storage space at the work site to provide storage for large items. The contractor shall make provisions for storing or scheduling delivery of large items. If necessary the contractor may temporarily park a storage trailer at the site at a location agreed upon by the contractor and the USGS TECHNICAL LIAISON

The contractor shall be responsible for the transportation and disposal of all debris and material to be discarded from the worksite and the facility. The facility does not have adequate trash receptacles for such items. Should the contractor desire to place on site a dumpster to facilitate debris and material removal a request to the COR, including the size of container and anticipated dates needed, shall be given a minimum of 48 hours in advance of the scheduled date. The USGS TECHNICAL LIAISON will identify an acceptable location for placement of the dumpster.

All equipment and materials furnished and installed by the contractor shall be approved by Underwriters Laboratories, Inc., and shall be UL-Listed.

The contractor shall furnish all materials necessary for this work. The contractor shall provide all labor for the complete installation of the retrofit including restoring all surfaces to their original condition. Any damages that occur as a result of this work shall be corrected by the contractor at no additional cost to the Government.

The contractor or subcontractors shall be manufacturer-approved installers of any boiler equipment that will be used and be able to furnish a written single source warranty for labor and materials.

The contractor shall be responsible for visiting the work site to verify general and local conditions that can affect the cost thereof. Failure to do so will not relieve the contractor of his/her responsibility for estimating properly the difficulty or cost of successfully furnishing the materials and performing the work required to carry out the contract in accordance with the true intent and meaning of the specifications without additional cost to the government.

Any changes affecting the scope of work shall be originated from or approved by the contracting officer.

All materials and workmanship shall be subject to the inspection and approval of the USGS TECHNICAL LIAISON. All work unsatisfactorily performed shall be promptly corrected and made acceptable to the Government at no additional cost. Government shall furnish no materials for completion of the project. The contractor is responsible for complying with all Federal, State, and local laws, codes, and regulations in connection with the execution of the work required.

Upon completion of the contracted work, the contractor shall notify the USGS TECHNICAL LIAISON. The USGS TECHNICAL LIAISON will schedule an inspection of the work site, and will perform the inspection at the site to determine if all the work performed by the contractor meets the requirements of the Statement of Work. The contractor may be present at the site during the final inspection by the USGS TECHNICAL LIAISON. The date of acceptance of the work by the Government will be determined by the Government after the final inspection has been performed; punch list items are identified, and are corrected.

The contractor shall provide initial start-up operations training to a minimum of one USGS employee and provide a minimum of two copies of owners/maintenance operations manuals for any piece of equipment installed.

The Contractor shall be required to complete the project within 90 days from date of award. The time stated for completion shall include final cleanup of the premises.