---
title: "Defining ECHs with OB-Items"
slug: "defining-echs-with-ob-items"
tags: ["AIR3D", "3D", "3D Observation"]
updated: 2026-10-27T23:12:37Z
published: 2026-10-27T23:12:37Z
canonical: "ims-handbook.cenosco.com/defining-echs-with-ob-items"
---

> ## 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.

# Defining ECHs with OB-Items

> [!NOTE]
> User Note
> 
> This article deals with the specifics of creating ECHs with 3D Observation Items. To learn more about ECHs in IMS, see: [IMS Condition Histories (ECHs) across Discipline](/v414/docs/ims-condition-histories-echs-across-discipline).

## Defining ECHs with OB-Items

For an ECH that was created based on an OB-Item or to which an OB-Item was added:

- Open the ECH.
- Click the EVENT OR OPPORTUNITY DRIVEN box in the ECH.

The OB-Items linked to the equipment marked as Reviewed and Marked for ECH will be displayed in the appropriate Dynamic Form. In the example below, the OB-Items have been added to the Corrosion Stage of the AIR Form.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-XECXQMWW.png?sv=2026-02-06&spr=https&st=2026-10-28T18%3A51%3A10Z&se=2026-10-28T19%3A51%3A10Z&sr=c&sp=r&sig=pRv0EA3ebTgz82a5u0vVRy8ueTmpT38mhkrCxmK7%2F0Y%3D)

To add additional information or additional images to accompany the OB-Items:

- Click on the Stage Card containing the OB-Item.
- Add any relevant information or images.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-83BMLMK7.png?sv=2026-02-06&spr=https&st=2026-10-28T18%3A51%3A10Z&se=2026-10-28T19%3A51%3A10Z&sr=c&sp=r&sig=pRv0EA3ebTgz82a5u0vVRy8ueTmpT38mhkrCxmK7%2F0Y%3D)

Open the OB-Item to add additional information.

ECHs containing 3D OB-Items should have the 3D model shown in the Drawings and Documents section. The OB-Items are shown on the 3D model.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1680012408437.png?sv=2026-02-06&spr=https&st=2026-10-28T18%3A51%3A10Z&se=2026-10-28T19%3A51%3A10Z&sr=c&sp=r&sig=pRv0EA3ebTgz82a5u0vVRy8ueTmpT38mhkrCxmK7%2F0Y%3D)

Reviewing OB-Item locations in the 3D Model

### Reviewing ECHs created from AIR3D

Any ECHs created from OB-Items will be added to the 3D ECH Dashboard.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1680011996021.png?sv=2026-02-06&spr=https&st=2026-10-28T18%3A51%3A10Z&se=2026-10-28T19%3A51%3A10Z&sr=c&sp=r&sig=pRv0EA3ebTgz82a5u0vVRy8ueTmpT38mhkrCxmK7%2F0Y%3D)

3D ECH Dashboard