RSTRENG Overview

Technical Toolboxes is a PRCI authorized agent to bring industry-leading calculations to market, like PRCI RSTRENG®, which is the industry standard for calculating the strength and remaining thicknesses of pipes. It answers critical questions about pipeline safety.

Parts 192 and 195 of Title 49, US Code of Federal Regulations, stipulate that ASME B31G must be used to assess the remaining strength of a corroded pipe. The PRCI RSTRENG® corrosion assessment tool meets both of these CFR requirements.

For more efficient top-tier remaining strength and effective area analyses, Technical Toolboxes also offers a premium tool, PRCI RSTRENG+®, which includes workflow automation for the zero-out method.  PRCI RSTRENG+® saves valuable engineering time and enables operators to reduce the number of costly integrity digs.

The zero out method involves simulating repairs on critical corroded sections of pipe in a way that identifies which specific regions of long-length corrosion areas must be repaired to operate safely, given a desired operating pressure.  Additional enhancements are available on the HUBPL that integrate other IP sources for remaining-strength, remaining life, and re-assessment interval calculations.

Specific Challenges for Corrosion Engineers

Data Automation

Low-quality data and calculation errors add risk and increase your QC workload.

Technical Toolboxes automates quality controls, unifies data storage, and controls calculation parameters so you can deliver accurate results consistently.

Solutions by Role

Corrosion Analyses

Repeating calculations or changed parameters lead to duplicated workloads and long delays.

Pipeline Toolbox, PRCI AC Mitigation Toolbox and PRCI RSTRENG+® deliver resilient materials performance throughout the pipeline lifecycle.

SOP Alignment

Teams interpret SOPs differently, causing errors and duplicating workloads.

Technical Toolboxes integrates your databases and brings your operations into a unified set of Standard Operating Procedures.

Vast Pipeline Networks

Tens of thousands of miles of pipeline mean that the data is stranded in offices across the continent.

The HUBPL connects PRCI RSTRENG+® and other tools to your data across the pipeline lifecycle, so the users that need fast access to your data have it at their fingertips.

Pipeline Integrity

Corrosion leads to excessive risk and pipeline replacement costs.

Technical Toolboxes offers powerful corrosion analysis tools, like Pipeline Toolbox, PRCI RSTRENG+®, and PRCI AC Mitigation software.

Software Compatibility

Data captured in one software system has to be manually entered into all other applications that analyze the same data.

Technical Toolboxes developed the HUBPL, to connect multiple software programs from different IP sources into an integrated solution that streamlines the user experience and reduces duplication of effort.

Two RSTRENG Solutions


PRCI RSTRENG® is a crucial integrity management tool, and Technical Toolboxes is proud to offer it as a PRCI authorized agent. Corrosion engineers need to know the remaining strength of pipelines in all stages of corrosion, and along extended lengths of pipe.


Most assessment tools evaluate only the most corroded areas, but RSTRENG+ will reveal corrosion throughout the pipe. It includes a “zero-out” feature that lets users assess each portion of a pipeline to repair critical damage. RSTRENG+ is a premium tool to calculate the remaining life and integrity of operational pipelines.
Both PRCI RSTRENG® and RSTRENG+ are offered as desktop and cloud-based tools for corrosion analysis and pipe failure prediction.


At the time that PRCI RSTRENG® was developed, most corrosion lengths on pipelines were less than 20 in. However, pipeline operators are now finding much longer metal loss defects that require the understanding of the entire metal loss region to make a true prediction of the pressures and repairs required.

ASME B31.G and Modified B31.G are Level 1 calculations that can be used as a screening assessment. If the metal loss area passes the maximum safe pressure by taking two measurements (maximum length and depth), then no further detailed assessment is required. Level 2 assessments like PRCI RSTRENG® are performed when Level 1 assessments fail.

The manual process was always a part of corrosion engineers’ workflows.  Because it was so time-consuming, pipeline operators requested that the process be automated and personal computer performance needed to improve before automation was feasible.

Request a Demo

Technical Toolboxes offers cloud and desktop solutions that raise standards, maximize quality, and boost productivity. Please fill in your contact information to schedule a demo, and a Technical Toolboxes representative will follow up with you shortly.