Part 3 Brittle Fracture Assessments and MAT Curves

API 579-1 Part 3 Brittle Fracture Assessments

In order to ensure sufficient material toughness, API 579-1 requires a Part 3 brittle fracture assessment before proceeding with the majority of flaw assessments. This is provided in INSPECT by specifying that a Part 3 brittle fracture assessment be done on the flaw being investigated. Part 3 brittle fracture assessments are derived from ASME VIII, paragraph UCS-66 and no software handles this better than Codeware’s.

Perform Part 3 Level 1 and Level 2 Assessments

INSPECT includes both level 1 and level 2 assessments for carbon and low alloy steels. Assessments are performed at the specified Critical Exposure Temperature (CET) instead of the MDMT as used in UCS-66. In addition, INSPECT runs multiple Part 3 assessments for each flaw and produces a Minimum Allowable Temperature (MAT) curve. These curves plot MAT versus pressure and help speed up the creation of equipment Integrity Operating Windows.

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How to Perform Part 3 Brittle Fracture Assessments in INSPECT

For More Information on API 579-1 Part 3 Brittle Fracture Assessments See:

FFS Forum: When is a Brittle Fracture Assessment Needed? by Inspectioneering

99 Diseases of Pressure Equipment: Brittle Fracture by Inspectioneering

INSPECT Featured Capabilities

API 579 Part 3

Ensure your operating procedures limit the risk of brittle fracture by automatically running Part 3 assessments.

API 579 Part 4 & 5

Perform general and local metal loss assessments and quickly generate detailed reports.

INSPECT performs API 579 FFS assessments and shows flaws on the 3D model

API 579 Part 6

INSPECT performs level 1, 2 and 3 pitting assessments and generates detailed API 579 reports with a click of a button.

Combined Pitting and Local Metal Loss Flaws are Considered

API 579 Part 7

Perform Level 1 and 2 assessments from Hydrogen Induced Cracking (HIC) and Hydrogen Blister damage.

API 579-1 Part 7 Hydrogen Cracking and Blister Damage

API 579 Part 8

Ensure that vessels subject to external pressure are within the allowed roundness tolerance with out-of-roundness assessments.

API 579 Part 9

Level 1 and 2 assessments quickly determine which crack-like flaws can be safely left in service and which require more investigation.

API 579 Part 10

Perform creep damage assessments by recording equipment operating histories and calculations.

API 579 Part 11

Perform fire damage assessments and document conclusions in a consistent series of data entries and reports.

API 579-1 Part 11 Fire Damage Assessments

API 579 Part 12

Perform Part 12 assessments and generate detailed API 579 reports. Level 1 and 2 dent, gouge and dent-gouge combinations are available.

API 579 Part 13

Model laminations and provide rapid results so you can make the necessary mediation decisions with confidence

API 579 Part 14

INSPECT’s fatigue assessment scans the vessel for other flaw types and allows the user to adjust the “remaining strength factor” (RSF) as required by API 579.

API 510

Address in-service activities such as inspection, remaining life determination and repair.

API 570

3D inspection data management and calculations simplify compliance with the requirements of the API-570 Code.

API 653

Track tank thickness inspection measurements and provide calculation reports.

Gage Integration

Set up and retrieve inspection grids from thickness gages fast and easy.

OSHA 1910

Meet the Mechanical Integrity requirements of OSHA1910.119 (j) and EPA Title 40 part 68.73.

Undocumented Vessels

Pressure Vessel Inspection Code requires owners to maintain permanent, progressive records as listed in API 510 Section 7.8

The INSPECT IDMS

Show condition monitoring locations (CML’s) and API 579-1 flaws directly on pressure equipment models.

Auto-Refrigeration

MAT curves are employed to determine which process conditions put equipment at risk of failure by brittle fracture.

Minimum Safe Operating Temperature (MSOT) curve in INSPECT

Old ASME® Codes Supported

Increase vessel life automatically by using the higher allowable stresses per NBIC Section 3.4.

Pressure Relieving Devices

Easily model pressure relieving devices (PRDs) on your fixed equipment.

Excel Integration

Export and import thickness inspection grids to and from Microsoft Excel.