Bidders to install an LNG trim heater and generator at our LNG facility.

Middleborough Gas & Electric Department is requesting sealed bids for furnishing, fabricating, and installing a natural gas trim heater and standby generator at its LNG peak shaving facility located at 2 Vine Street, Middleborough, Massachusetts, with bids due August 6, 2026 at 1:00 PM. The procurement is subject to Massachusetts prevailing wage requirements under M.G.L. c. 30, § 39M, with wage schedules issued June 10, 2026 covering all construction classifications including operating engineers, laborers, electricians, and welders through the project duration.

The scope encompasses civil and structural work (foundations, anchoring via hydrovac excavation), mechanical and piping work (fabrication, installation, testing, and stainless steel coating), electrical and instrumentation installation (conduit routing, cable termination, system commissioning), and final purging and tie-in activities under department supervision. The contractor must install a Gaumer Process model ICCS6F9N160M4EDK electric trim heater (90 kW nominal, 4-inch inlet/outlet), integrate the existing Kohler standby generator, install an automatic transfer switch, and provide all associated piping and electrical infrastructure. Work commences summer 2026 with commissioning completed no later than October 1, 2026. The contractor must supply a detailed milestone schedule, key staff resumes, identification of subcontractors, and documentation of similar project experience.

Middleborough Gas & Electric supplies the trim heater, control panel, generator, transfer switch, and fuel gas service; material deliveries are projected for July 31, 2026. All work must comply with 49 CFR Part 193, NFPA 59A (2001), NFPA 54 (2021), and NFPA 70 (2023). The contractor is required to employ a part-time Safety Specialist, conduct weekly and daily safety meetings, perform 100% nondestructive examination of welds via Certified Welding Inspector, assume one full week of commissioning (40 hours), and attend six weeks of weekly status conferences. Questions are due July 30, 2026, and the board award vote is scheduled for August 12, 2026.