Bumper for Bundle Bore Pipe Sizes

Bore Spacer Use History

     Our bumper spacers that are used to prevent lines from colliding with and damaging one another in bundled road bore applications have been successfully used on many projects now.  Simple to install and proven repeatedly to be reliable (with some before and after photos that can be found on this article).  In that light, I am finding that a couple of questions are asked often.  These two questions are:  what pipe sizes have used these bumpers....and how many have been installed?  I'll answer the second question first.

     So how many of our bumpers have been installed?  The simplest answer is:  thousands.  We've seen thousands of our bumpers installed successfully.  Those protected pipelines on many miles of bundled road bores.  Beyond all of that, we've heard repeatedly about the simplicity of the installation of the system and advantages over some of the other options out there.  I think I described in detail here recently how our bumpers will have no issue with hydrostatic testing (which I was told caused some of the other bumper systems to fail before the bundle ever saw the bore hole). 

     On what sizes lines have our bumpers been used?  At this moment, we've seen our bumpers installed on every pipe size between 3.5" and 20".  We've seen everything from two pipeline bundles to eleven pipeline bundles.  Beyond that though, our evaluation of both the specially formulated bumper material and our knowledge and experience of the system we use to hold the bumpers in place; tells us that this system will work on any sized line.  Our system has been used in slightly different application on lines up to forty eight inch with no issues (actually in those cases our system was used an actual pipeline coating in order to prevent corrosion for twenty plus years; so simply "surviving the bore process without losing track of the bumper" is a pretty small request when making a comparison. 

    

Pipe Bore Spacers Case Study

Pipeline Bumper Case Study:  20" & 16"

     We were recently given an opportunity to get involved with yet another bundled road bore.  This was a slightly unusual case here in the USA because this pipeline was factory coated with a polypropylene coating and was being installed onshore.  Given our long and successful track record, our product was specified to be the bumper installed on each line to prevent the lines from damaging one another during the pull through. 

     The job went perfectly and we've even already shipped bumpers for the second phase of the project.  Installing on both a 20" and a 16" line was simple.  Utilizing our specially designed bumper system, we locked in place a bumper that is 2" wide and 1" tall.  We do have 2" tall bumper as an option.  In numerous case studies, however, with pipe up to 20" and beyond, it has been shown again and again that with proper bumper spacing, the 1" tall bumpers are sufficient to protect the factory applied coating. 

     So without further ado, let's take a look at some photographs:

Bumpers installed on 20" and 16" pipe

Close up of an installed bumper

Three adjacent lines all protected by bumpers prior to the bundling.

Pipe just prior to bundling.

Two Inch Bumpers for Bundled Road Bore

2 Inch Bumper System for Bundled Directional Drill

    If you've browsed this blog before, you've undoubtedly seen that we have numerous successful cases of our 1" Bumper System being used.  From time to time, what we've heard from end users and engineers is that they love our 1" system, but they would love a 2" system even more.  It took a little development time and it took a few different systems that were ultimately ruled out during our evaluation process, but we are now comfortable that we have come up with a 2" bumper system that will offer the same great performance as our proven 1" system has. 

3.5" Pipe and a 4" wide bumper that is 2" tall at its highest.

In this case, pipe would enter the bore offscreen to the right.

This bumper has an OD of 5.5" and is locked in place on the 3.5" pipeline.

     This material has been used previously and successfully held a 1" bumper in place.  For this system, we have created a star stepped bumper which will ensure shear and stress forced for this 2" bumper will be very similar to those experienced and survived on the 1" bumpers in the past.  To be on the safe side, we have increased the bond area of the sleeve to offer more square inches of bond, which will improve shear resistance even beyond what was needed for the 1" bumpers. 

     This is a great system.  With questions, or to schedule a demonstration, contact us today (steve@jsicoatings.com / 936/321-3333)