VOL. 2 ISSUE 2 VIEW FROM the TOP A newsletter from Commonwealth Dynamics, Inc., Specialists in Tall Structures IN THIS ISSUE: n Chimney Breech and Tail Gas Replacement Project; 19-Day Outage n International Update: Israel Orot Rabin Power Station Rutenberg Power Station n Join us at Power Gen 2014 Orlando, December 9th–11th Booth #2635 VISIT US at POWER GEN 2014 ORLANDO DECEMBER 9TH – 11TH BOOTH #2635 PRODUCTS SERVICES n Concrete Chimneys n Design & Engineering n Steel Stacks n New Construction n Turbine Exhaust Systems n Modifications & Repairs n Solar & Wind Support Towers n Demolition n Natural Draft Cooling Towers n Project Management n Storage Silos & Stacking Tubes n Consulting n Other Tall Specialized Structures CORPORATE WORLD HEADQUARTERS Commonwealth Dynamics, Inc. Portsmouth, New Hampshire USA www.comdynam.com CHIMNEY BREECH AND TAIL GAS REPLACEMENT PROJECT; 19-daY Outage Commonwealth provided engineering, fabrication, and erection services for the replacement of a new chimney breeching duct, tail gas duct, expansion joint, and other ancillary materials for a large manufacturing plant in Louisiana. Existing Condition Chimney Breech & Tail Gas Replacement Scope of Work: CDI completed a final inspection once the plant was brought off- line, cooled and vented. After the work areas within the structure were deemed safe to enter, the crew began removing the failed refractory from the worn out tail gas sections. After the sections to be demolished were stabilized structur- ally, the tail gas section was removed in three lifts and the chimney breeching duct was removed in one. The installation of the new tail gas duct sections and chimney breeching were installed as planned. Installation of liner patch plates was completed along with necessary interior liner repairs to the breech transition section. Finally, to complete the outage work, the high temperature expansion joint and spring hangers were installed. The demolition, disposal of refractory, and recycling of steel materials was completed on the ground. INterNatioNal Update: Israel ChiMNEY ProJects Commonwealth was awarded a contract from the Israel Electric Corporation (IEC) to build two (2) large reinforced concrete chimneys at two (2) different coal fired power plants in Israel. The first chimney, located at the Orot Rabin Power Station, stands at an overall height of 250m and is well under construction. This particular chimney is extremely unique due to its compli- cated internal structures; it will be the first in the world to incorporate limestone and gypsum storage silos into the chimney equipment pro- cess. This integrated design is truly exceptional and pushes the design and construction enve- lope in many areas. In addition to designing for normal chimney loads, it also had to be designed to transfer enormous thrust loads across the two construction openings. These openings are big enough to allow trucks to drive in and out of the “factory” to collect the processed gypsum, a use- Orot Rabin Power Station ful by-product of the FGD process. The second chimney, located at the Ruten- berg Power Station (approx.. 100km south of Orot Rabin) broke ground in the early Spring. The 203m tall concrete shell has reached full height ahead of schedule, and the crew is ac- tively working to install the internal struc- tures and liner system. Full time engineering efforts to support both chimney projects has been provided by our Portsmouth, NH world headquarters lead by CDI’s Chief Engineer, Bob Walter. Rutenberg Power Station EMploYEE highlight Denis Radecki. P.E., Chairman ACI-307 Committee Commonwealth is proud to recognize Denis Radecki as the new Chairman of the American Concrete Institute (ACI- 307) Committee. ACI is responsible for the development of design and construction code requirements for cast-in- place and pre-cast reinforced concrete chimneys. Denis has been involved in the design, construction, and analysis of tall reinforced concrete structures for 40 years and cur- rently leads our Construction Engineering & Planning Group out of CDI’s Terre Haute, Indiana office, responsible for design for all special projects. Terre Haute is also where Commonwealth’s main warehouse and equipment operations are strategically located, allowing equipment to be easily accessed from project sites across the country. This group is responsible for the inven- tory, maintenance, and testing of all specialized equipment including forming systems, hoists, jacking equipment, and small cranes. Additionally, they’re re- sponsible for managing the logistics of international shipments to sites around the world to ensure timely mobilization and project start-ups. Commonwealth Warehouse Operations, Terre Haute, Indiana PLEASE CONTACT US! Commonwealth Dynamics, Inc. 95 Court Street Portsmouth, NH 03801 603-433-6060 [email protected] www.comdynam.com Commonwealth Dynamics, Inc. 95 Court Street Portsmouth, NH 03801.