Fisher's Featured Projects
We’re proud to showcase a number of recent projects, each demonstrating a wide range of experience, skills, capabilities and value to customers. For more information about any of these or others, don’t hesitate to call or write us.
Stainless Steel Condensate Tank at a Nuclear Facility
Condensate Storage Tank with Seismic Requirements
43' x 45' Stainless Steel 500,000 gallon dome roof tank
This 304L stainless steel storage tank is an example of the successful integration of storage tank design, fabrication and construction with very specific requirements governing the process and the final product. The 45' x 43' self supporting dome roof tank with an internal floating roof stores 500,000 gallons of hardened condensate and serves a nuclear power facility in a high seismic area. Every aspect of the project, from initial designs to the in-house fabrication of every piece, and the execution of the construction plan, had to adhere to very strict quality and safety standards.
The Fisher Tank team worked very closely with the project owner and construction management team and their inspector to ensure that every single piece of the final product would meet and exceed all criteria. This involved close scrutiny of every process, from the tank contractor's receipt of materials to surface prep, fabrication, welding and loading for delivery to the site.
The geographic location of the nuclear facility dictated the high seismic requirements for the tank, which, at capacity, weighs 4,451,225 pounds. Fisher Tank Company designed an extensive anchor system to meet the seismic load requirements. Each 3'6" anchor chair weighs 487 lbs; there are 38 anchor chairs around the 45' base of the tank. The top of each stainless steel anchor chair is 4" thick and the sides are 2 1/2" thick. The anchor chairs are placed at approximately 3' intervals around the tank, much closer together than in typical anchor systems. All nozzles extending to the interior of the tank had to be analyzed for potential sloshing in the event of seismic activity. The tank contractor specially fabricated the nozzles, counterboring and tapering them to provide smooth flow from the tank to the outside piping. the design also included a nozzle barrier.
In addition to the seismic requirements, the owner also required extensive safety measures to reduce the tank's vulnerability to potential nuclear activity, missiles or vehicular attack on the facility. The tank's foundation is a 5' thick pad resting on concrete and rebar pilings. This pad is designed to withstand a nuclear blast or missile attack. The tank is surrounded by a fencing system specially designed to protect the tank from vehicular assault.
The extreme windload requirement (230 mph) and structural force requirements also dictated the design. The roof to shell joint can withstand up to 1,450,000 pounds of force. The vent to frame joints can withstand 1,450,000 pounds of force.
The collaboration between Fisher Tank's engineering, fabrication and construction teams and the owner, the owner's engineer and the construction management team resulted in a storage tank specially designed, custom fabricated and precisely constructed to meet the unique and extensive safety requirements for a key piece of equipment in a nuclear power facility located in a high seismic zone.
Raw Water & Demin Tanks - Perryman Generating Station
Perryman Generating Station
(1) 46’6” x 32’ URT Raw Water Tank - 400,000 gallons
(1) 57’ x 40’ URT 304L Stainless Demin water tank – 763,500 gallons
Fisher Tank Company, working as a subcontractor to Energy Services, Inc., built two field erected welded steel storage tanks at Exelon's Perryman Generating Station. Fisher's first contract was for a raw water storage tank, and ESI was so pleased with Fisher's performance that the second tank, a stainless steel demineralized water tank, was contracted as soon as the first tank was complete.
Wilbur Hutchinson, Site Manager for ESI, praised the Fisher team: "I would like to take a moment and let everyone at Fisher Tank know that Doug Hill is one of the most motivated and organized people that I’ve had the pleasure to work with in a very long time. Each day in our planning meeting he knows exactly what he and his crew are doing and what he expects to complete the following day! With that being said, when Doug and his Crew complete the Raw Water Carbon Steel Tank that they are currently constructing, I would like to have them move right into the construction of the SS DI water tank. This would be a Great Help since Doug and his Crew are all safety trained here at the Perryman 6 Exelon Site, and [they] understand all of the added safety that is required to get the work completed."
Award Winning API 620 Ammonia Tank
Dakota Gasification Beulah, ND, Anhydrous Ammonia Storage Tank
Dakota Gasification Great Plains Synfuels Plant, Beulah, ND
API 620 Low Pressure Storage Tank
Dakota Gasification required additional anhydrous ammonia storage to supply the ground-breaking scrubber process at its ultra-clean Great Plains Synfuels Plant in Beulah, ND. The design, fabrication and construction the 30,000 ton ammonia storage tank presented a number of challenges – including potentially frigid temperatures in the forbidding North Dakota winter. The vast size of the storage tank, pressure requirements, temperature requirements and aesthetic requirements all promised a challenging project.
Working with a skilled EPC team from Burns & McDonnell, Fisher Tank Company developed tank and foundation designs that would address the specific operational needs for the tank, the unique criteria for storing anhydrous ammonia, and the related environmental and safety concerns.
The tank is built on a slab foundation, with a base heating system, which prevents the soil under the foundation from freezing, and guards against damage to the slab from the extreme cold. In addition to the heating system, Fisher installed foam glass insulation between the tank bottom and the slab; this protects the slab from the very cold operating temperature of the tank itself.
The extensive insulation system, required to maintain the -28 degrees Fahrenheit operating temperature, was installed after the exterior coating system was applied. Fisher Tank Company designed the unique wild lap roof, and constructed, painted and insulated the roof on the ground inside the tank. Fisher air raised the completed roof into place. Once the roof was in place, the tank’s exterior insulation and the roof insulation were connected and sealed.
The single containment tank system also includes a vapor recovery system and an earthen dike around the tank foundation to ensure that all potential vapor emissions and liquid leakage will be fully contained.
170' diameter x 98' height
10,920,400 gallon capacity
API 620 Appendix R & API 625
-28 degrees Fahrenheit operating temperature
685 tons of steel
19,000 man-hours with zero safety incidents
1 MG Tank Stands Up To Coastal Wind & Weather
Chicago Street Water Tank
Fall River, Massachusetts
The City of Fall River, MA, needed to replace an aging, lead-paint covered water storage tank. A new tank would provide safer and cleaner water storage. Space was tight, however, and the new tank needed to be built where the old tank was sitting - right in the middle of a residental area. In addition, the site's proximity to Mount Hope Bay meant that the tank would require a special design in order to stand up to the coastal wind and weather.
Once the old tank was demolished and removed, Fisher carefully arranged materials delivery and lay down, as well as strategic placement of a large crane, to minimize the impact on the neighborhood. Fisher worked with an expert paint contractor to install an extensive cable and tarp containment system, so that the surrounding homes and property would not be damaged in the process of applying the exterior paint to the tank.
The tank was designed to withstand wind speeds of up to 150 miles per hour, and features thicker steel in the tank’s shell, a wind girder about 2/3 of the way up the tank, and an extensive system of anchor chairs. Fisher fabricated and installed a full 360 degree handrail as well as safety climbs on the tank. A mixing system installed in the tank ensures that the water is properly aerated and is kept in motion to prevent freezing even in the coldest Massachusetts winters.
The coating system on the tank is key to the tank’s appearance and to its long term performance and value. A three-coat potable water-safe zinc epoxy primer was applied to the tank’s interior for long-term performance. The exterior received a four-coat, 20 year high performance paint system, especially designed for long-term gloss and recommended for coastal locations. The tank’s knuckle umbrella roof design minimizes potential corrosion points, contributing to the performance of the coatings system and supporting a lower total cost of ownership for the tank.
50’ diameter x 76’ height
1,116,200 gallon capacity
176 tons of steel
Knuckle Umbrella Roof
Wind Girder and Anchor Chairs
Specialized multi-coat primer & exterior paint system designed to withstand coastal conditions
Water Storage - A Fitting Landmark On The UConn Campus
University of Connecticut Water Tank
Demo & New Tank Construction
The Universtiy of Connecticut, Storrs, CT
The project included demolition of two exiting water tanks, as well as the design, fabrication and construction of a new single tank on the UConn campus. The challenges included designing and installing a much-needed functional water storage tank that would serve as a fitting landmark on the beautiful, historic campus of The University of Connecticut.
Fisher Tank Company designed 45’ x 85’ 3” tall storage tank with an umbrella roof to provide the required 1MG capacity and to fit the location and aesthetic requirements. Fisher performed fabrication and blasting, as well as priming, in-house, to ensure that the tank would be prepared for the interior and exterior coasting systems. Fisher Tank designed the new tank’s foundation and work worked with a subcontractor to perform the demo of the existing tanks, and install the foundation. The Fisher team constructed the tank onsite, including interior piping, anchor bolts and the roof. The exterior coating system includes a stunning UConn logo on a pure white background.
45’ x 85’ 3” Umbrella Roof Tank
Clean Coal Power Plant - Duke's Cliffside Modernization Project
Cleveland & Rutherford Counties, NC
In 2009, Duke Energy received the final air permit for its planned Cliffside Unit 6, a new, 825 megawatt clean coal unit. The new unit was the centerpiece for a massive modernization project at the Cliffside Steam Station in North Carolina. The project involved installing a new power generation unit, Unit 6, and retiring four older units; including the original Unit 1, which went into service in 1939. The project also included installation of a new, state of the art emissions control system.
According to Duke Energy, “Cliffside Unit 6 (has) among the strictest, most effective air emission controls available to protect public health and the environment.” The four-year project “ensures Duke Energy will continue to meet our customers’ need for clean, affordable and reliable electricity in the future,” and moves Duke toward a carbon neutral designation by 2018. (Duke Energy)
The $1.8 billion dollar first-of-its-kind project required thousands of man hours and hundreds of teams representing hundreds of trades vital to the power generation industry. The new unit and its emissions control system would require many above ground storage tanks to keep the power generation processes running, to handle the water used and reused by the unit, to store fuel and other process components, and to support the air quality control system. The tanks had to be erected on site, in location all over the sprawling facility, in the midst of hundreds of other critical activities.
Maintaining a safe environment for Fisher's crews as well as for everyone working on the vast site was vital. Staying on schedule while completing multiple tank projects was also critical to the success of the overall project.
Working with Duke energy, the project EPC (Shaw), and the emissions control system provider (Alstom), Fisher Tank Company provided engineering, fabrication and construction for the field erected welded steel tanks for the modernization project, including water and wastewater tanks, slurry tanks, scrubber vessels, and various auxiliary tanks.
43' X 48' OTT
34' X 24' CRT
18' X 16' SSCRT
58' X 60' OTT
17' X 24' OTT
18’ x 18’ OTT
(2) 44' X 32' URT
(2) 32' X 40' URT
(2) 29' X 30' OTT
(2) 45' X 44' OTT
(3) 30' X 32' OTT
Wastewater Treatment Facility - Brandon Shores Power Plant
Wastewater Treatment/Water Storage
In order to meet EPA air quality requirements, the Brandon Shores Power plant needed an upgraded emissions control system. The emissions control system included a scrubber system that removes harmful materials from the plant's emissions. The scrubbing process uses water and creates wastewater, which is treated at the WWTP and returned to the power plant for safe, efficient use in the emissions control system. The Brandon Shores wastewater treatment facility required 14 new field erected welded steel tanks and two large silos to store lime used in the scrubbing process.
Fisher worked with Bowen Engineering to design, fabricate and construct clarifiers, reactor vessels, equalization tanks and holding tanks for the wastewater treatment plant. Fisher also designed, fabricated and installed key auxiliary equipment for the facility, including clarifier troughs, internal baffles and mixer platforms, agitator bridges and rake supports. Fisher crews erected two 85’, 48,000 lb shop fabricated lime silos on the site as well.
14 total tanks in the following quantities and sizes:
(2) 21’ x35’
(3) 40’ x 16’
(3) 60’ x 32’
(4) 33’ x 24’
(2) 33’ x 35’
All tanks are field erected, welded carbon steel open top tanks. Fisher provide tank engineering, custom fabrication, including shop blasting and priming, and field construction for the tanks.
See more on Bowen Engineering's website! http://www.bowenengineering.com/portfolio/948/
Ethanol Rail Terminal — Green Plains Renewable Energy/Blendstar
Green Plains Renewable Energy with BlendStar, LLC., needed two very large tanks capable of storing ethanol at a BNSF rail hub in Birmingham, Alabama. BlendStar constructed over a mile of additional track in order to bring tanker cars to the terminal to load and unload ethanol, and needed storage capacity in place very quickly.
The terminal is a regional hub for ethanol distribution and has storage capacity of over 6 million gallons. The site presented unique challenges because of its proximity to interstates and to a major rail hub. Fisher’s team had to comply with the railroad’s specific safety requirements, as well as the environmental requirements.
To meet the schedule, Fisher mobilized two crews and tanks were constructed simultaneously. To meet specific environmental requirements, Fisher installed two carbon steel multicolumn cone roof ethanol storage tanks with aluminum internal floating roofs with double wiper seals. Fisher also provided interior and exterior coatings for the tanks.
Tanks are 110’ diameter x 40’ high; Volume: 3,198,900 gallons