Boiler 3 replacement SOW.pdf

Eastern Regional Research Center USDA, ARS, NEA, ERRC Boiler 3 Replacement Statement of Work

General Descrip�on of work

The Eastern Regional Research Center (ERRC), 600 East Mermaid Lane, Wyndmoor, PA requires the replacement of a 400HP dual-fuel, natural gas/oil Kewanee boiler, referred to as Boiler 3, with a nominally sized 250HP boiler rated below 10MBTUH firing natural gas or #2 hea�ng oil. The work includes demoli�on and removal of the exis�ng boiler, provision and installa�on of the new boiler, including piping, electrical, exhaust and controls. The contractor shall provide all labor, materials, equipment, supplies, transporta�on, supervision, tes�ng and incidentals necessary to provide a completely opera�onal, fully automated, boiler integrated with ERRC’s Siemens building automa�on system (BAS). Complete system must fit on the exis�ng 216”x118” housekeeping slab. Atch 1, ERRC Campus plan and Atch2, Service Building plan view define loca�on.

Boiler

The provided boiler shall be a firetube 3 Pass wetback wall Scotch type unit designed and fabricated IAW ASME boiler and Pressure vessel code Division 1 and UFGS Sec�on 23 52 49.00 20. It shall be nominally sized at 250Hp producing 8625 lb/hr steam. It shall be derated and labeled to fire 9,990 MBTU (approximately 248HP). Design pressure shall be 150psi. Normal opera�ng pressure is 90psig with occasional need to operate at up to 110psig. Basis of design is Superior Boiler works model X6- 5-1250-S150-WB-G. It shall include water level sight glass, pressure and temperature gauges, feedwater valve and level control system, pressuretrol high limit control, High pressure relief valve, mechanical float low water cut-off, high water alarm, botom blow valves, automated surface blow system, non-return valves for steam and feedwater lines, steam stop valve providing two-valve protec�on, flanged exhaust stack with integral damper.

Burner and Controls

The boiler shall be furnished with a 9,990 MBTUH package burner for natural gas and #2 oil firing. It shall u�lize linkless control and be capable of 3% O2 measured in the exhaust. Basis of design is Weihaupt WM-GL30/2-A,ZM-T. Firing rate shall be fully modula�ng on gas with 10:1 turndown.

Firing rate on oil may be staged. Flame detector shall u�lize IR technology. Provide and install natural gas valve and pilot gas trains for 5 psig supply pressure. Provide and install properly sized fuel oil train with air/gas separator.

The burner shall be provided with a burner management system controlling combus�on and integrated with all boiler safety devices. Burner and controls shall comply with UL and CSD-1 codes.

Sensors and controls shall be non-proprietary to the extent prac�cal. Controls shall be mounted in a single enclosure with gasketed door, main disconnect, switch for burner on/off, indicator lights for power, burner status, fuel gas status, fuel oil status, and fault status as well as a touch-screen interface allowing local opera�on and monitoring of all boiler, burner and sensor parameters. System shall include a low fire hold feature limi�ng firing rate and stack temperature during startup. The burner control system shall be integrated via BACnet with ERRC’s Siemens Building automa�on system including Desigo CC graphics, remote and local alarming, and mass no�fica�on features allowing monitoring and control of boiler and burner parameters.

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Eastern Regional Research Center USDA, ARS, NEA, ERRC Boiler 3 Replacement Statement of Work

Piping

Piping shall be provided, installed, fabricated, supported, and insulated IAW ASME B31.1. Exis�ng pipe sizes are: main steam, 6”ips; fuel gas, 3”ips; fuel oil supply and return, ½”ips; botom blow, 2”ips; surface blow, 1”ips; relief valve discharge, 1-1/2”ips; condensate, 1-1/2”ips; feedwater, 2- 1/2”ips; exhaust stack, 24”. Materials to match exis�ng

Electrical

Electrical installa�on shall be in accordance with NEC code. Work shall meet the requirements in (UFGS) Sec�on 26 00 00 Basic Electrical Materials and Methods. All wiring shall be in EMT or rigid conduit. Liquid�ght Flexible Metal Conduit (LFMC) may be u�lized for short runs not to exceed 36” at entrances to enclosures.

Tes�ng

The contractor shall perform start-up and light-off adjus�ng installed equipment, performing combus�on efficiency and emissions tests ensuring all local and remote controls operate correctly.

Writen reports of all tests shall be provided to the government. The contractor shall provide opera�onal and maintenance training to ERRC staff for all installed systems. Provide Maintenance Data in accordance with UFGS 01 78 23 Opera�on and Maintenance Data.

General work rules Work hours at ERRC are 7:00AM to 3:30PM Monday through Friday. Electrical shutdowns suppor�ng the work are to be scheduled during off hours or during weekend hours. General requirements are contained in atachment 3, DIV1 USDA Gen Requirements 29Feb24 and associated submital log Atachment 4.

Submitals iden�fied in atch 5, Project Specific Submital Log, including shop drawings, product data, test reports, and referenced standards, etc. for all products associated with the work shall be provided to the Government for review prior to commencing any por�on of the work. Basis-of-design products may be indicated in this SOW to convey a specified standard of quality, but are not to be considered a single-source specifica�on. Where “Basis of Design” is indicated in the specifica�on of equipment, material or installa�on; the Owner shall approve all alternate equipment, materials, manufacturers or installa�on. It shall be the Contractor’s burden to furnish all documenta�on and / or samples to show equality with specified items. Owner’s decision is final.

Materials and installa�on shall meet all current Federal, State and local codes and requirements, including the Na�onal Fire Protec�on Associa�on (NFPA) codes.

The contractor shall sequence the work to limit service outages. Shutdowns are to be minimized to the shortest prac�cal dura�on.

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