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12th Avenue Tunnel Project Completed!

As summer comes to an end, so does the construction on the OSU Wexner Medical Center 12th Avenue Tunnel project. Bruner was chosen to relocate the utility tunnel in order to provide high pressure steam and chilled water to the new Critical Cancer Tower along with distribution to other main hospitals on OSU’s Medical Center Campus. The new underground tunnel connects from the South Campus Chiller Plant and travels down Cannon Drive and up 12th Avenue to a main valve vault located at the corner of 12th Avenue and Harding Hospital. With the help of Bruner, this mechanical upgrade will result in greater efficiencies and savings in operational costs and energy in adjacent buildings.

Electrical, plumbing, and HVAC services were maintained throughout construction to major OSU buildings, and all piping systems were installed after the tunnel completion. So what was included you ask? For the chilled water piping there is: 1600 lineal ft of 36” and 900 lineal ft of 42” extra heavy carbon steel pipe, and 500 lineal ft of 24” pre-insulated underground piping. As for the high pressure steam and condensate piping: 1000 lineal ft of 12” seamless carbon steel piping and 1500 lineal feet of 8” and 6” stainless steel piping. Bruner manpower peaked at 20 pipefitters and welders at one time!

So the next time you are walking around Ohio State’s campus and find yourself on 12th Avenue, think about the hard work put in by Bruner to achieve efficiency and energy savings below you!

Project Spotlight: Miranova Helicopter Lift

In the autumn of 2011, Bruner technicians performed routine maintenance on seven make-up air units at One Miranova Place in Columbus, Ohio.  The seven make-up air units providing fresh air to the kitchens of over one hundred condominiums were found to be unsafe for operation, due to cracks in the gas fired heat exchangers, which could allow carbon monoxide to enter the living spaces of the tenants.

To provide a temporary repair, Bruner welders sealed the leaks, allowing the units to remain operational until new make-up air units were available for installation.  These repairs, while temporary, allowed the Board of Directors at Miranova time to investigate several options for a long term solution.

After receiving several proposals, the Board decided to accept the solution provided by the Bruner Corporation.  With advice from Prater Engineering, the Board accepted the offer from Bruner to remove the aging make-up air units, and install seven new “Aaon” 100% fresh air make-up air HVAC units.  The new Aaon units, with technological advances not available 15 years ago, provide increased energy efficiency and extended longevity.

One of the major obstacles facing Bruner was the difficulty in removing the existing units and mounting the new units to the rooftop of One Miranova Place, nearly 340 feet above street level.  After consulting with several crane companies, it was determined that the most economical means of replacing the units would be to utilize the services of Midwest Helicopter, a company specializing in lifting equipment inaccessible to conventional hoisting systems.

In preparation for the helicopter lift, Bruner technicians, led by Bob Hoffman and Don McNeal, [John Magill and Brian Caton also] spent many hours to assure that all components were able to be safely and efficiently lifted to and from the building.  Their efforts paid off, as the total time required to remove seven units and mount seven new units was under one and a half hours, nearly a fifth the time required for conventional hoisting methods.

With an extreme focus of safety and customer satisfaction, Bruner has once again demonstrated our commitment to excellence.  Even during this potentially dangerous helicopter lift, the interruption of business to Miranova One (condominiums) and Miranova Two (office building) was negligible.

Hats off to the Bruner team for making this event run so flawlessly.

 

Build Green with LEED for Schools

The LEED for Schools Rating System recognizes the unique nature of the design and construction of K-12 schools. Just to clarify, LEED stands for: Leadership in Energy and Environmental Design. LEED for Schools is the recognized third-party benchmark for high-performance schools that are healthy for students, comfortable for teachers, and cost-effective for budgets.

Studies have shown that students learn better in a quiet, comfortable, and properly lit environment. Because of this and many other factors, greening our schools has become a high priority.

LEED is not meant to be used as the only measure in determining whether a project is green, and in order to achieve green goals it is essential that design teams (including owners and contractors) take an integrative approach and view the project as a whole.

Using an integrated design approach, LEED promotes improved practices in:

  • Site selection and development
  • Water and energy use
  • Environmentally preferred materials, finishes, and furnishings
  • Waste stream management
  • Indoor air quality and occupant comfort
  • Innovation in sustainable design and construction

Bruner is currently working with Dublin City Schools in an effort to promote LEED for schools–check out our project page for more information. With this project alone, Bruner has been recognized by AEP Ohio for our “commitment to energy efficiency and the environment”. As a result of our collaboration, Dublin City Schools will reduce energy use by 739,410 kWh per year and reduce CO2 emissions by 632.8 tons, which equals as many as 100 cars off the road per year! Consider LEED for your school, and contact Bruner to find out what we can do to help.

 

Sources:

http://www.usgbc.org/ShowFile.aspx?DocumentID=5020

http://www.facilitiesnet.com/green/article/Integrated-Design-Is-Essential-for-LEED-for-Schools–13125#

Boiler Replacement: Start to Finish in 4 Days

On Friday, February 17, around noon, Service Technician Steve Haag received a call from the Kroger regional office in Westerville indicating that they had a leak into the first floor offices below the mechanical room. Haag’s immediate action was to find the leak and identify its cause. Once at the Kroger office, he found that the leak was coming from their thirty-year-old Ajax fire tube boiler.

Project Engineer Chip Neville was contacted to come up with options for which to rectify the situation. “A repair of that style boiler requires special certification welding that only a couple of people in central Ohio have,” Neville said. “Unfortunately, our certified technician was out of town on another service until late the following week.” By the time he arrived at the Kroger office at about 2:30pm, Haag had the system opened and they found more than just a few tubes were leaking.

The two deduced that a repair was not an option and turned their focus toward a new system. Neville had checked options on his way over with Kevin McGovern Associates and Herbert & Conway, and while on site, he received pricing from both. With those costs in mind, the Bruner team discussed options with Kroger representatives with regards to equipment availability, efficiency, cost, and timing.

By 5:00pm that day, Neville presented firm budgets and a recommendation to Kroger’s Senior Engineer, Eric Wagonknecht, with a target of having the new boiler in place by the end of the following week.

Wagonknecht asked the Bruner team to proceed with a modular boiler option called EVO by Hamilton Engineering. Thanks to Kevin McGovern and the late night put in by the Hamilton Engineering team, the boiler was ordered and its assembly started by 6:00pm.

After tremendous effort by the entire Bruner team, the system was ready to be started by the end of the day Thursday – less than one week after discovering the problem. By 10:00am on Friday morning, the Bruner team had the heat back on in the building just as outdoor temperatures dropped. The replacement even managed to increase system efficiency from 76 to 95 percent.

Thanks to the Bruner team for their incredible diligence and efficiency in delighting our customer with excellent service: Steve Haag, Larry Carver, Don McNeal, and Rocky Carr, with assistance from Kevin McGovern Associates and Hamilton Engineering.

If you’re worried about your mechanical systems, check out our e-book for 9 tips to keep them in tip-top shape!

Fast Track Prefab for Scioto Downs Casino

The Scioto Downs Casino is a fast track project. The construction of the building must be concluded in six months, with all HVAC and plumbing finished in months two and three of the project.

Bruner Corporation has performed many fast track jobs in the past, but not as short as this. In order to accomplish this task, prefabrication was a necessity. Bruner developed an aggressive plan that entailed the prefabrication of all ductwork and plumbing fixture rough-in piping systems in our shops. The fixtures would subsequently be shipped to the project on a just-in-time basis.

The prefabrication process consisted of 60,000 pounds of ductwork and 2,500 feet of waste and vent, and domestic water piping. Modular restroom assemblies were prefabbed for 161 fixtures. Twenty-one batteries were shipped to the project, rolled in to place, and finish piped in four weeks.

Bruner met our commitment to our customer with the detailed planning and coordination between our fab shop and field teams.

Thanks to all those who made this project a tremendous success.

Energy Conservation Programs: They Pay Off

Early this week, Hilliard City Schools was presented with a rebate check in the amount of $111,622.42 from AEP Ohio’s Business Incentives program following an energy conservation program in conjunction with Bruner that began in early 2011.

The Hilliard City Schools project included the following energy efficiency measures:

  • 40-ton chiller replacement at Scioto Darby Elementary
  • T8 high-output, high bay lighting retrofits in 22 gymnasiums across the district
  • Occupancy lighting sensors in all gyms and some cafeterias
  • Parking lot lighting retrofit to inductive lamps

The projects represent an annual electricity savings of 728,000 kilowatts per year and an annual cost savings of $58,242.64.

To date, Hilliard has received the largest rebate check of any school district in Ohio. Following closely behind was Dublin City Schools, another project Bruner was fortunate enough to be part of, with more than $90,500.

To get started with an energy conservation program for your district or organization, contact Eric Kuns, VP of the Solutions Group, at (614) 334-9000.

As you can see, the benefits are clear.

NCH RBIII Nears End of Plumbing, Med-Gas Line Installation

Nationwide Children’s Research Building III is nearing the end of the installation of the building’s plumbing and medical gas lines after almost two years of field installation work.  The seven-story building is roughed in and final connections to medical outlets, building equipment and fixtures will be made throughout the next 30 days.

Nearly 15,000 linear feet of medical gas copper pipe serve the wet labs on levels four and six, distributing carbon dioxide, oxygen, medical air, and lab gas.  Over 17,000 linear feet of domestic water copper pipe has been installed, with more than half of that being located in the lower level vivarium. These lines feed the faucets, drinking fountains, emergency shower and eyewash stations throughout the building. The lower level vivarium also required a specialized drinking water distribution system specifically designed for small and mid-sized animals. These 2,600 linear feet of fire rated plastic pipe were brought in from a design and manufacturing company based out of California to supply clean water to over 200 distribution stations.

Currently, Bruner is working in conjunction with other final trades companies to ensure all sinks, faucets, eyewashes, and bathroom fixtures are set properly. Final items to be completed by other trades include installation of cabinetry, floor tile, drywall, and ceilings; painting; and installation of lab-specific structures to house medical gas lines.

Life Safety for the building is set for February 6, 2012, meaning that all plumbing work must be completed and inspected by that time.

 

OSU Tunnel Project Nears Completion of Main Piping Systems

Bruner’s work as on the Ohio State University Medical Center Tunnel project began mid-2010. As we near the end of 2011, Bruner’s team is working hard to meet deadlines, complete tasks, and prepare for next year’s challenges.

At its inception, the project involved a utility tunnel relocation providing high pressure steam and chilled water to OSU Medical Center’s new Cancer Critical Tower, along with distribution to other main hospitals on the Medical Center campus. Feature of the project include:

  • Chilled Water Piping
    • 1,600 lineal feet of 36” extra heavy carbon steel piping
    • 900 lineal feet of 42” extra heavy carbon steel piping
    • 500 lineal feet of 24” preinsulated underground piping
  • High Pressure Steam and Condensate Piping
    • 1,000 lineal feet of 12” seamless carbon steel piping
    • 1,500 lineal feet of 8” and 6” stainless steel piping

The goal of the mechanical upgrade was to result in greater efficiencies and savings in operational costs and energy in adjacent Medical Center buildings.

As we sit here today, the main piping systems for chilled water (CHW), high pressure steam (HPS), and pumped condensate return (PCR) for all remaining sequences in the Tunnel project are nearing completion. The Bruner team is also preparing for hydrotesting of the CHW piping, which will begin in mid-to-late January 2012. In the following four weeks, crews will focus on small bore piping and specialties as they prepare for the steam blow operation to begin in May 2012.