---
title: "PL External Corrosion - Condition Histories"
slug: "pl-external-corrosion-condition-histories"
updated: 2026-03-09T10:16:12Z
published: 2026-03-09T11:27:02Z
canonical: "ims-handbook.cenosco.com/pl-external-corrosion-condition-histories"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://ims-handbook.cenosco.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PL External Corrosion - Condition Histories

> [!NOTE]
> Take note
> 
> This overview will explain the Condition history section in the External Corrosion module of IMS-PLSS.

This section provides, by default, an overview of [Condition Histories](/v410/docs/plss-condition-history-overview) with an Action Performed related to External Corrosion.

By default, the ECH grid’s filter is set to display only the Actions Performed codes related to External Corrosion Assessment.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/Screenshot_265.png?sv=2026-02-06&spr=https&st=2026-10-28T22%3A55%3A48Z&se=2026-10-28T23%3A55%3A48Z&sr=c&sp=r&sig=3tvopZXmuHludGb%2BUjvgvYUAGMOHIDO2WOA7y9M2ZR0%3D)

The default Actions Performed list is the same as the Plancode list in the [Schedule Section](/v410/docs/pl-external-corrosion-schedules).