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Dewatering a Lock and Dam Page 4 Crosscurrents Serving the St. Paul District since 1977 January 2013 Vol. 39, No. 1 Dewatering a lock and dam Page 4 Extreme makeover in store for district website Page 9 U.S. Army Corps of Engineers St. Paul District CROSSCURRENTS January 2013 | Volume 39, Issue 1 | 2 Contents 3 Comments from the top 4 District works through cold weather to Joseph Gurin, operations, uses a clevis to complete Lock and Dam 6 dewatering project connect equipment to a crane during dewatering 6 History in the making, Headwaters reservoirs construction at Lock and Dam 6, near Trempealeau, Wis., Jan. 16. were a vision of the first district commander Photo by Kevin Bokay 8 District finds opportunity during drought, completes repair work at Minneapolis lock Crosscurrents is an unofficial publication authorized under the provisions of AR 360-1. It is published monthly for U.S. Army Corps of Engineers, St. Paul District. 9 Extreme makeover near for district website Views and opinions expressed in Crosscurrents are not necessarily those of the Department of the Army or the U.S. Army Corps of Engineers. 10 Employee selected as the division Articles and photography submissions are welcome and must arrive by the hard hat of the year recipient 15th day of the publishing month for consideration. Submissions can be mailed or emailed. 11 Corps of Engineers Civil War history Submissions should be in Microsoft Word format for all written copy and photos comes alive with display at district office should be no smaller than a 5 x 7 at 300 dpi. All photographs appearing herein are by the St. Paul District Public Affairs Office unless otherwise accredited. 12 News & notes The mission of Crosscurrents is to support the commander’s internal information Crosscurrents is read program for the St. Paul District and its stakeholders. by tech-savy people like Crosscurrents also serves as the commander’s primary communication tool for Dave Kayser, Army Corps accurately transmitting policies and command philosophy to the St. Paul District of Engineers Information community and its customers. Technology. Photo by Patrick Moes Address all inquiries to: Editor, Crosscurrents U.S. Army Corps of Engineers 180 Fifth Street East; Suite 700 St. Paul, MN 55101-1678 (651) 290-5202 [email protected] © District Commander Col. Michael J. Price flickr Facebook YouTube Flickr Public Affairs Chief Shannon Bauer Crosscurrents Editor Patrick Moes Click on a logo to go to the St. Paul District social media page, where you can like us, watch videos about us or see more photos. Contributors George Stringham CROSSCURRENTS January 2013 | Volume 39, Issue 1 | 3 Comments from the top Team, Army and its installations, the Corps of future. With respect to all personnel Engineers is also subject to many of cost-saving measures, we will elcome back from the relaxing these same measures. continue to examine our decisions holiday break. As we begin the First, there is an immediate hiring based on whether the decision is Wgloom period, that time when freeze across the Army’s civilian reversible and what the decision the weather turns colder and snowier, workforce. There are waiverable means to our future. please remember to be safe as we positions, but the Chief of Engineers Other cost-saving measures participate in the many outdoor activities remains our approval authority. The include curtailing temporary duty the winter wonderland has to offer guidance is also clear in that minimal assignments, travel, training, and as we drive in less than desirable waivers will be allowed. What this administrative costs and conference Finally, and on a brighter note, it is conditions. means to the district is that we will have attendance. Everything will be winter, and we are finally getting some As we come back and get settled in to clearly define our critical positions. scrutinized. We are also preparing for much needed precipitation. We are this year, we are faced with financial We are looking at every aspect of what sequestration, which may include a Minnesotans, Wisconsinites, Iowans challenges that have caused the we do and determining if those tasks budget cut across all programs. The and North Dakotans; we enjoy the Department of the Army to issue some are mission critical. district leadership is analyzing impacts weather we are given … at least I do. fiscal guidance. This month, I would like The second aspect relating to and developing actionable plans. For us, the cold is not as fun without the to review some of that guidance and personnel is the Army’s guidance to Pending additional guidance, I will snow, so enjoy it while you can and be relate how it will affect all of us. terminate temporary employees and communicate potential impacts to the safe doing it. The Army faces significant budgetary to not extend any term employees district when I hear more. Thanks for all that you do day in and uncertainty for a number of reasons consistent with mission requirements. To The bottom line is that the district will day out. Keep up the great work that and must take some immediate steps date, students (temporary hires) in the manage this crisis. We will continue to has given the St. Paul District a great to reduce its overall expenditures. While Pathways Program are exempt. deliver our world-class solutions; and reputation across the Corps! most of the cost-saving measures Workforce planning has become we will work with and communicate with are occurring throughout the regular extremely complex as we look to the our partners and customers. BUILDING STRONG. CROSSCURRENTS January 2013 | Volume 39, Issue 1 | 4 District works through cold weather to complete Lock and Dam 6 dewatering project by Kevin Bokay or the fourth time since it was put LeSeure, Lock and Dam 6 lockmaster. into service in 1936, Lock and “Before dewatering begins, the cranes FDam 6, near Trempealeau, Wis., is at either end set the bulkheads into being dewatered. The lock was closed slots in the concrete, they bulkhead the Dec. 3, and the repairs are scheduled to Tainter valves and check all the seals be completed by March 11. - then the lock can be pumped down. The 13 lock and dams within the We sink an equipment barge with heavy district are dewatered for maintenance machinery on it to allow access for the on a schedule of every 15 to 20 years. crew.” A district employee monitors work at the Lock and Dam 6 dewatering, near Trempealeau, Wis., The work is scheduled around the During this scheduled maintenance, Jan. 16. The lock is dewatered approximately every 20 years for maintenance. navigation season, so maintenance work includes repairing concrete, Photo by Kevin Bokay takes place during some of the coldest sandblasting and painting the miter weather of the year. At least 35 people gates, and replacing most of the make up the dewatering team; they are bubbler system. The bubbler system drawn from lock and dam personnel, assists in dislodging debris that may maintenance and repair crews and disrupt the operation of the gates. personnel from the dredging team. Workers expect to replace 80 percent Traditionally, temperatures during the of this system with stainless steel tubes operation are seasonably cold with daily that have a longer service life. highs averaging around 30 degrees. Sandblasting of the miter gates takes This is mild compared to the cold place during the night and painting temperatures endured during previous is done during daylight hours. “The dewaterings. When the lock chamber sandblasters can see what they’re doing was dewatered in 1994, workers faced better at night, in low light, and the temperatures from 25 to 35 degrees painters work better during the sunlit below zero. Comparatively, this year’s hours” says Scott Uhl, operations. dewatering took place during very good Uhl said the team is also repairing weather. concrete along the lock chamber walls. “Before maintenance operations The Corps is using a wet-cut system could even begin, the crew removed that minimizes airborne dust and debris. four barges of mussels, sand and This method is more difficult to use in Knute Knutson, operations, operates a crane during work at the Lock and Dam 6 dewatering, near other debris that had accumulated at near-freezing conditions but is more Trempealeau, Wis., Jan. 16. the bottom of the lock,” said Rojean environmentally friendly, he said. Courtesy photo CROSSCURRENTS January 2013 | Volume 39, Issue 1 | 5 Gate repair also entails removing the because it had bent and deformed diagonals that criss-cross the gates by diagonals. The diagonals are tension heating them with a blow-torch. The bars that normally keep the gate plumb larger diagonals weigh close to 1,000 when stationary and prevent the gate pounds each, while the smaller ones from twisting while in motion. weigh in at about 600 pounds each. Lock and Dam 6 is also the first site in The lower gates are 25 feet high and St. Paul District to deploy a greaseless weigh 92 tons, while the upper gates pintle ball. The pintle is the bottom hinge are 23 feet high and weigh 85 tons point for the gates. The greaseless ball each. Uhl said the team needed to put will require much less resources and in a little extra work on one of the gates, maintenance. Brandon Olson, operations, works on diagonals for the Lock and Dam 6 lock gates during the dewatering at the Trempealeau, Wis., lock and dam. The project began Dec. 3, 2012. Photo by Kevin Bokay Kim Wenger, left, operations, and Mike Gunderson, operations, talk in the Lock and Dam 6 District staff begin preparing Lock and Dam 6, near Trempealeau, Wis., for dewatering in December lockhouse during the lock dewatering Jan.
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