Industry News, trenchless projects
Hiroshima Heavyweight Launches on Expressway Line 5
On September 18, 2018, a Robbins mega-sized slurry machine, measuring 13.7 m (44.8 ft) in diameter, made its first cut into hard rock. The epic launch at an urban jobsite was made possible by Onsite First Time Assembly (OFTA) of the TBM in Japan for the Hiroshima Expressway Line 5 project. The contractor, a joint venture of Obayashi-Taisei-Kosei, had a strict timeline of eight months to adhere to when it came to machine assembly. “This deadline was very important. After assembling the TBM, I think OFTA was appropriate for this project,” said Mr. Ryota Akai, Deputy Project Manager for the Obayashi JV.
Due to the project location there were also restrictions on delivering the TBM—in order to meet controlled transportation limits within the city, the TBM had to be divided into small transportable weights and sizes, then assembled in a small jobsite measuring just 30 m (100 ft) wide x 60 m (200 ft) long. The 2,400 metric ton (2,650 US ton) machine will bore 1.4 km (0.9 mi) of the 1.8 km (1.1 mi) long tunnel that, once completed, will significantly improve traffic conditions in Hiroshima.
The massive machine is the country’s first foreign-made large diameter Slurry TBM to excavate hard rock in Japan. “There is a lot of hard rock in Hiroshima,” said Mr. Akai, “and Robbins has a lot of experience boring hard rock.” The machine is expected to encounter granite with rock strengths up to 130 MPa (19,000 psi) UCS. Those involved in the project are excited to see what effect this will have on how Slurry TBMs are used in the future. “The development of this TBM is a milestone,” said Mr. Kiyomi Sasaki, General Manager of Robbins Japan, “it will lead to new tunnel applications worldwide.”
The design of the Slurry machine is robust in anticipation of potentially abrasive rock conditions and water pressures up to 13 bars. “The Robbins machine is very tough, for example the weight is very heavy. The cutterhead, both its material and structure, are very tough. It will not break in hard rock,” said Mr. Akai.
In preparation for the conditions, the machine was designed for 20-bar water pressure. The robust cutterhead was fitted with 20-inch and 17-inch diameter pressure compensating cutters, which utilize a patented design to effectively operate under high pressure. The joint venture intends to change the disc cutters an estimated 10 times during the bore as part of the machine’s maintenance.
Throughout the assembly and launch process the joint venture crew worked with Robbins Supervisors who assisted and provided guidance. “Robbins crews have a lot of experience; they help us every day despite the language barriers. I appreciate it,” said Mr. Akai.
The new Expressway Line 5 tunnel will directly connect Hiroshima’s urban area with a major national highway network and is expected to improve access to Hiroshima Airport. Tunnel completion is planned for 2020.
Image 1: Robbins crews assisted the contractor during Onsite First Time Assembly (OFTA) of the massive Slurry TBM in a jobsite measuring just 30 m (100 ft) wide x 60 m (200 ft) long.
Image 2: The 13.7 m (44.87 ft) diameter Robbins Slurry machine launched on September 18, 2018 in Hiroshima, Japan.
Image 3: Guerin Nolasco of Robbins Field Service looks on during testing of the segment erector inside a mega-sized slurry machine at the Hiroshima Expressway Line 5 project.
Industry News, trenchless products
GSSI, the world’s leading manufacturer of ground penetrating radar (GPR) equipment, will be highlighting its StructureScan Mini XT and StructureScan Mini LT systems, and the StructureScan Palm XT antenna at The American Society for Nondestructive Testing Annual Conference, being held October 28-30, 2018, at the George R. Brown Convention Center in Houston, Texas. GSSI will be 
exhibiting its products at booth #941.
StructureScan Mini XT – the newest generation of GSSI’s popular all-in-one concrete inspection GPR system is ideal for locating rebar, conduits, post-tension cables, and voids. The Mini XT can help identify structural elements, including pan decking and concrete cover, and can also provide real time determination of concrete slab thickness. StructureScan Mini XT is the perfect blend of price and performance and is backed by a two-year warranty. It features an intuitive touchscreen interface and six-button control options.
Visitors to the booth can also see a demonstration of the newest accessory for the StructureScan Mini XT. The Palm XT Antenna is a miniaturized GPR antenna that is designed to greatly enhance the capabilities of the StructureScan Mini XT. The handheld Palm XT antenna turns a basic Mini XT into an advanced system by giving users unparalleled access in tightly spaced areas and enabling overhead scanning. Designed to withstand challenging construction sites, the Palm XT is an excellent choice for contractors and engineers alike who need to perform nondestructive testing of concrete structures.
In addition to the Mini XT and the Palm XT accessory, GSSI will be displaying the StructureScan Mini LT. This unit is an integrated all-in-one concrete inspection tool that can help identify structural elements like concrete cover and provides real-time concrete slab thickness measurements. The Mini LT is an all-in-one GPR system that is IP 65-rated to withstand a jobsite’s toughest conditions and features an easy-to-use interface. The StructureScan Mini LT is the perfect entry-level concrete inspection system.
About GSSI
Geophysical Survey Systems, Inc. is the world leader in the development, manufacture, and sale of ground penetrating radar (GPR) equipment, primarily for the concrete inspection, utility mapping and locating, road and bridge deck evaluation, geophysics, and archaeology markets. Our equipment is used all over the world to explore the subsurface of the earth and to inspect infrastructure systems non-destructively. GSSI created the first commercial GPR system nearly 50 years ago and continues to provide the widest range and highest quality GPR equipment available today.
Industry News, trenchless products
VZ Environmental is an innovative leader in secondary drip and spill containment for the oil and gas industry. Carol Van Zandt, owner of VZ Environmental, was challenged by a customer to find a simple method to contain liquid spills in the oil and gas industry. Carol partnered with an equipment supplier to design a drive-over foam bermed containment membrane (VMatz™) to capture and dispose of drips and spills on oil and gas sites. They then utilize a Vac-Tron vacuum excavator to clean up the spill from the containment membrane for proper disposal.
Today, VZ Environmental provides equipment nationwide, servicing areas in five states and have plans for further domestic and international expansion to continue to help oil and gas operators minimize their impact on the environment.
Project Descriptions
VMatz are spill containments that VZ provides for oil and gas operators to minimize their impact on the environment. “Our customers use the VMatz to catch drips and spills while on location and then we come in to cleanup,” says Carol. VZ wanted to provide their own vacuum service to their customers as part of the cleanup process, so that the customer didn’t have to waste time and money calling out for a vacuum truck company and VZ environmental didn’t have to sit on location and wait for the vacuum truck to arrive before they could cleanup.
Solution
Vac-Tron vacuum trailers for vacuum service and cleanup. “The Vac-Tron trailer helps us clean up our VMAtz by removing the fluid from our containments more efficiently and a lot faster. We are not sitting on location waiting on vacuum trucks to arrive. Prior to having Vac-Tron vacuum trailers in our fleet of equipment, we did not offer any type of vacuum service. Our customers had to order a vacuum truck to come help us remove the fluid when we were cleaning our Vmatz. Our Vac-Tron units come with 500-gallon debris tanks and 1,000 cfm which helps us pick up the rocks and sludge that our customers leave in our containments. This is a perfect size because its small and they can park it off to the side, then call upon it as needed,” says Carol.
Results
- Saves customers time and money
- Eliminates down time
- Keeps environment safer
“With a Vac-Tron trailer, we can save our customers money through minimizing the number of trips that they have to call out a vacuum truck. When shopping for vacuum trailers, Vac-Tron is by far the best! Our machines, every time you turn them on, they are rip roaring to go. Our employees don’t have time to go through and try to figure out things, they want to flip it on and use it immediately and they want it to work. Vac-Tron does that for us every time,” says Carol.
Check out the full video interview with VZ Environmental here. For more information on Vac-Tron Equipment and its full fleet of vacuum excavators, please visit them online at www.vactron.com or call 1-352-728-2222.
Industry News, trenchless people
Missen brings over 25 years experience to the position
GREENVILLE, S.C. — September 24, 2018 — McLaughlin Group, Inc. continues to grow its expertise in the underground construction industry with the addition of Neville Missen, an industry veteran who has played in integral role in developing microtunneling equipment and steerable rock systems. In his new role as applications engineer for McLaughlin auger boring equipment, On Target steering systems and steerable rock systems, Missen will work with contractors, dealers and the McLaughlin team to develop innovative equipment solutions that will continue to advance the industry.
Missen, a native of Australia, has owned and operated Boretec Microtunneling Pty, Ltd, managed Bullseye Microtunneling, and served as an equipment sales representative for Vermeer Australia.
“Neville has been a trusted partner of ours for many years,” explained Dave Gasmovic, business development manager at McLaughlin. “We worked with him when he was a contractor and he always provided helpful information for developing new products. From the work Neville has done testing machinery to the role he’s served in designing new equipment, he has helped fuel the growth of auger boring and microtunneling. We are excited to have him working for McLaughlin.”
For more information about McLaughlin products and services, visit www.mclaughlinunderground.com or email McLaughlin at mmole@mightymole.com.
About McLaughlin
McLaughlin, a Vermeer Company, has been actively involved in the drilling tool industry for more than 95 years. McLaughlin has a reputation for designing and building dependable trenchless construction equipment. McLaughlin takes pride in providing solutions for OEMs and the underground industry.
McLaughlin Group, Inc. reserves the right to make changes in engineering, design and specifications; add improvements; or discontinue manufacturing at any time without notice or obligation. McLaughlin and the McLaughlin logo are trademarks of McLaughlin Group, Inc. in the U.S. and/or other countries.
© 2018 McLaughlin Group, Inc. All Rights Reserved.
Industry News, trenchless people
PHILADELPHIA, PA ‐ Pipe Lining Supply is pleased to announce the appointment of Augustus “Gus” Bozzano, II to the position of Technical Representative serving the north eastern USA.
Gus brings many years of plumbing and drain cleaning experience to the new position.
Gus will support Pipe Lining Supply’s customer base with training, advice and sales for CIPP lateral lining and AIPPR pipe coating projects for drain, waste and vent in the Philadelphia and surrounding areas.
Pipe Lining Supply is a leader in the manufacturing and distribution of materials and equipment used in the lateral sewer lining and DWV rehabilitation business. The company was formed to support customers who need training and support as well as the equipment and materials to rehabilitate aging sewer laterals and pipe to restore your pipes to LIKE new condition, extending pipe life 50+ years!
Their goal is to serve the industry with a complete warehouse stocked with the best products at the lowest delivered cost on a timely basis. Visit their website for more information.
