Clock Spring Casing Spacer Axial Shear Testing Results Validate Better Product Performance

Stress Engineering tests determine greater resistance capacity and
enhanced pipeline protection

HOUSTON–(BUSINESS WIRE)–Clock Spring Company, LP (Clock Spring), the world’s leading
manufacturer of permanent and temporary composite pipeline and pipe work
repair solutions, today announced the results of Stress Engineering
Services, Inc.’s (Stress Engineering) full-scale upper-bound shear
testing, validating the stronger capacities of the Clock Spring Casing
Spacers product. Clock Spring contracted with Stress Engineering to
perform the shear tests on its derivative casing spacers product,
evaluating and comparing Clock Spring performance against traditional
casing centralizer and spacing solutions.

Contractors and operators install casing spacers and centralizers on
carrier pipes to protect pipe integrity. They prevent contact between
the carrier pipe and casing, minimizing coating damage and during
construction and ensuring centralization when construction is complete.
The casing acts as a storage vessel to limit the environmental impact in
the unlikely event of a leak and can help protect pipelines against
third party interference and damage.

The most commonly used casing spacers are bolt-on devices made of
plastic or steel. Other common casing spacers are banded wood skids.
Unfortunately, while the theory behind these solutions are sound, the
bolts and bands often break or move when crews pull or push carrier pipe
through casings. This results in coating damage and also can cause the
installed pipe to rest in contact with the casing, which can more
quickly lead to corrosion and carrier pipe weakness.

Stress Engineering Services performed shear tests to measure the
likelihood of a casing spacer breaking or dislodging during the
application of axial force to the pipe and the spacers. The tests
compared the Clock Spring solution to traditional bolted solutions by
applying concentric and eccentric shear to spacers installed on abrasion
resistant outer coating (ARO) coated steel and PVC pipes. The testing
force required to initiate sliding of the Clock Spring solution was
approximately 19 times greater than traditional casing spacers and five
times harder to keep them moving. A white paper detailing these dramatic
results is available here: Clock
Spring Casing Spacer White Paper.

“Axial shear resistance is an important variable and determines the
maximum amount of force that can be applied to a spacer before it begins
to slide,” said Buddy Powers, Vice President, Product Management and
Technical Services. “Needless to say, we couldn’t be happier with the
results.”

“We are driving innovation to enhance safety and provide stewardship of
customer assets and the environment,” said Matt Boucher, Clock Spring
President and Chief Executive Officer. “These encouraging results about
this easy to install product are greatly gratifying and further
validation that we’re on the right track.”

About Clock Spring

Clock Spring helps drive global economies by ensuring critical
infrastructure is managed safely and sustainably. The company’s
composite pipeline repair products have been deployed in 75 countries
and are easy to install, cost effective to deploy, and durable for
decades. Clock Spring solutions also include Snap Wrap, Pipe Support,
Contour and Casing Spacers, as well as training and installation
services. www.clockspring.com.

Contacts

For Clock Spring
Kelly Kimberly, 832.680.5120
[email protected]