MTA-LS-001 - Revision history

Colton Smith: Revision 0 Reviewed by Monica Hurley

2026-03-17T12:41:22Z

Revision 0 Reviewed by Monica Hurley

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 {{DISPLAYTITLE:Reduce BWR Core Shroud Inspection Costs Using a Novel Ultrasonic Technique Able to Detect Off-Axis Flaws - MTA-LS-001}}
 {{MTATemplate||
 | Date |12/15/2020
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 Quality Control
 | Reference Implementation Guidance | 2017 NEI TIP Awards – Submittal 20 (ID: 10107888)
-| Industry SME | EPRI - Steven K. Williams
+| Industry SME | EPRI Boiling Water Reactor Vessel and Internals Program
 Contact: NuclearPlantMod@epri.com
 | Previous Implementation | Please contact EPRI for implementation examples and contacts.
 | Implementation Enablers | N/A
 | Applicability | Most BWR 3/4/5 configurations
 All geographic regions
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 ==Risks==
 Site‑specific core shroud geometries and possible core shroud repair obstructions may affect the difficulty of the inspection; this may impact the cost and schedule of the core shroud inspection. Proper planning and coordination with the vendor should mitigate this risk.

Jacob Sommer: 1 revision imported

2026-03-05T01:37:54Z

1 revision imported

← Older revision	Revision as of 01:37, 5 March 2026
(No difference)

10.142.236.18: Created page with "{{DISPLAYTITLE:Reduce BWR Core Shroud Inspection Costs Using a Novel Ultrasonic Technique Able to Detect Off-Axis Flaws - MTA-LS-001}} {{MTATemplate|| | Date |12/15/2020 | Functional Area Where Benefits Will Be Realized | Licensing Engineering Quality Control | Reference Implementation Guidance | 2017 NEI TIP Awards – Submittal 20 (ID: 10107888) | Industry SME | EPRI - Steven K. Williams Contact: NuclearPlantMod@epri.com | Previous Implementation | Please cont..."

2026-02-20T22:57:42Z

Created page with "{{DISPLAYTITLE:Reduce BWR Core Shroud Inspection Costs Using a Novel Ultrasonic Technique Able to Detect Off-Axis Flaws - MTA-LS-001}} {{MTATemplate|| | Date |12/15/2020 | Functional Area Where Benefits Will Be Realized | Licensing Engineering Quality Control | Reference Implementation Guidance | 2017 NEI TIP Awards – Submittal 20 (ID: 10107888) | Industry SME | EPRI - Steven K. Williams Contact: NuclearPlantMod@epri.com | Previous Implementation | Please cont..."

New page

{{DISPLAYTITLE:Reduce BWR Core Shroud Inspection Costs Using a Novel Ultrasonic Technique Able to Detect Off-Axis Flaws - MTA-LS-001}}
{{MTATemplate||
| Date |12/15/2020
| Functional Area Where Benefits Will Be Realized | Licensing
Engineering

Quality Control
| Reference Implementation Guidance | 2017 NEI TIP Awards – Submittal 20 (ID: 10107888)
| Industry SME | EPRI - Steven K. Williams
Contact: NuclearPlantMod@epri.com
| Previous Implementation | Please contact EPRI for implementation examples and contacts.
| Implementation Enablers | N/A
| SWEEP Score |
* Cost – Level 3 –The inspection cost using the tool should be limited to $1 million or less.
* Savings – Level 1 – Savings are less than $1 million per year.
* Payback – Level 3 – Based upon available cost and savings information, the payback period for implementation would be less than one year.
* License readiness – Level 3 – This approach has already been implemented at nuclear power plants.
* Technology readiness – Level 3 – This approach has already been implemented at nuclear power plants.
* Implementation proficiency – Level 3 – The implementation and operation of the tool does not require knowledge in implementing digital technologies.
| Applicability | Most BWR 3/4/5 configurations
All geographic regions
| Keywords | Core shroud; off-axis flaws; ultrasonic technique; boiling water reactor; flaw evaluation; inspection strategy; vessel and internals
| Business Case Analysis Cross-Reference | N/A
}}

==Description==
The Boiling Water Reactor Vessel Internals Project (BWRVIP) requires that core shrouds be inspected using ultrasonic testing (UT) and/or visual inspections. Flaw indications in core shroud inspections are typically parallel to the welds in the heat affected zone; however, flaws that are perpendicular to the welds and heat affected zone can also be present. These indications are known as Off‑Axis Flaws (OAFs). BWRVIP issued an interim guidance letter in 2016 that requires one‑time core shroud inspections using techniques capable of detecting OAFs.

UT inspection using traditional methods would require different techniques to detect the horizontal and vertical flaws. The subject of this MTA is a single tool that can be used to perform the entire core shroud inspection, with the ability to inspect vertical and horizontal welds and detect OAFs. It uses UT to detect all possible flaw orientations while minimizing the number of times the tooling would need to be removed and returned to the reactor vessel.

==Benefits==
===Benefits Estimate===
Level 1 – Savings are less than $1 million per year. Potential savings are achieved through reduction in core shroud inspection time and personnel.

===Benefits Description===
* Reduction in time for inspections, which often impacts critical path for refueling outages.
* Reduction in dose due to eliminating tool removal/decontamination/reconfiguration/reinstallation.
* Reduction in data acquisition time relative to typical UT techniques.
* Improved quality of data and signals for analysis relative to typical UT techniques.

==Costs and Schedule==
===Cost===
Level 3 – The inspection cost using the tool should be limited to $1 million or less.

===Schedule===
Less than six months for pre‑outage planning to prepare for inspection.

===Scope Context===
Per unit/per core shroud inspection

==Risks==
Site‑specific core shroud geometries and possible core shroud repair obstructions may affect the difficulty of the inspection; this may impact the cost and schedule of the core shroud inspection. Proper planning and coordination with the vendor should mitigate this risk.