01 / PLAN
Set the scope
Identify the assets, materials, components, test extent, and organizational responsibilities that matter to the service.
The standard / the practice
What is
API RP 578?
A recommended practice for building and applying a material verification program. It helps organizations confirm that materials installed or maintained in an asset are the materials intended.
Learn it in the fieldProgramDefine where and how to verify
MethodChoose capable testing technology
EvidenceEvaluate and document results
The core idea
Verify the material.
Protect the decision.
API RP 578, Material Verification Program for New and Existing Assets, provides guidance for a systematic approach to material verification and quality assurance.
The owner or user defines the program for its equipment and risk: what materials and components to verify, when to test, which methods are suitable, how to evaluate results, and what records to retain. Positive material identification (PMI) is one testing activity within that larger program.
How a program works
More than a single reading.
02 / TEST
Use a suitable method
Choose technology and sample preparation that can measure the elements needed for the material decision.
03 / EVALUATE
Record the evidence
Compare measured chemistry to the applicable requirements, resolve discrepancies, and maintain traceable records.
Why it matters
Prevent the wrong alloy from going unnoticed.
An unintended material substitution can change corrosion resistance, mechanical behavior, or suitability for a particular process service.
A sound program connects engineering requirements with purchasing, receiving, fabrication, inspection, maintenance, and field testing. The program should account for service conditions and the consequences of an incorrect material.
Carbon steel and substitutions
Verification decisions in a carbon steel system may still need to consider the consequences of an unintended alloy substitution. The applicable program and service conditions determine the testing approach; a simple instrument grade match is not enough by itself.
Verification decisions in a carbon steel system may still need to consider the consequences of an unintended alloy substitution. The applicable program and service conditions determine the testing approach; a simple instrument grade match is not enough by itself.
The people involved
Shared responsibility.
Clear records.
A material verification program spans teams, vendors, and the asset life cycle.
- Engineering and materials selection
- Purchasing, receiving, and warehousing
- Fabrication and construction
- Operations, maintenance, and inspection
- PMI technicians and quality personnel
ATC training