---
title: "MiRO CMLs"
slug: "miro-cmls"
updated: 2026-10-27T23:12:37Z
published: 2026-10-27T23:12:37Z
canonical: "ims-handbook.cenosco.com/miro-cmls"
---

> ## 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.

# MiRO CMLs

You always need to define CMLs for your Circuit. This is where the Measurements will take place, at the Measurement Points (MPs).

## Creating CMLs

- Go to the Circuit Details Page.
- Scroll down to the **CML** tab.
- Click the *Plus* button.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pic%201-U422YHDR.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D)

- Enter the required data in the pop-up window. See the table below.
- Click **Save** when done.

The new Circuit will be created, and you will be redirected to the Detail Page of the CML that was just created.

NoteYour content goes hereYou can open a CML Details Page at any time by clicking on the hyperlink in the CML column on the **CML** tab in the Circuit Details Page.

CML pop-up (pay specific attention to the field indicated in bold):

| Field | Description |
| --- | --- |
| Circuit | The Circuit ID. This should already be selected. |
| **Sub Circuit** | Sub-Group of the selected Circuit, for grouping similar CMLs within a Sub-Circuit. The Sub-Circuit-CML combination should be unique. If you do not want to group CMLs you can use this as a short description. It is a mandatory field. |
| **CML** | The CML ID. This will become a hyperlink in the CML grid that you can click to open the CML Details Page. |
| **CML Type** | Type of CML (e.g., PIPE, HEADER BOX, REDUCER, TEE, SHELL, CHANNEL, NOZZLE). |
| CML Description | This can be used for an optional description (in addition to the Sub Circuit). |
| Must Get | Check if this CML must always be measured. |
| Position | Position of the CML in the Circuit. |
| **MP Configuration** | For MiRO Pipes, select the "Pipe - 6 x 1" configuration. |
| Active | By default the CML should be Active. |
| **Piping Class** | Applicable to Pipes. Select the [Piping Class to set other parameters on the CML](/v414/docs/miro-cmls#assigning-a-piping-class-to-a-cml). |
| Material | Select from predefined list. |
| Nominal Diameter | Select a predefined Diameter. |
| Nominal WT | Nominal Wall Thickness for the CML. |
| Actual OD | Actual Outside Diameter |
| **Renewal Thickness** | Minimum Wall Thickness (WT) for the selected CML. |
| Renewal Basis | Renewal basis, either CALCULATED, FITNESS FOR SERVICE, NOMINAL MINUS CORR ALLOWANCE, STRUCTURAL MIN. |
| Required Inspection Method | Option to set a required Inspection Method (e.g. UT, RT) for all measurement for the CML (optional). Use UT-R for datalogger import and UR for the [DIMATE-PACS interface](/v414/docs/dimate-pacs-interface). |
| **Design Corrosion Allowance** | Mandatory. |
| Drawing Filename | Search for and add a related drawing. |
| Line number on drawing | Line number on drawing |
| Line number in P&ID | Line number in P&ID |
| Sketch number | Sketch number |
| Longitude | Longitude |
| Latitude | Latitude |
| Altitude | Altitude |

## Assigning a Piping Class to a CML

When a CML is created you can assign a Piping Class to it.

The Piping Class sets:

- Material
- Available Nominal Diameters to select from

Then the selected Nominal Diameter – sets:

- Nominal WT
- Renewal Thickness (from Over. Renewal WT as defined in the Piping Class)
- Actual OD (from Diameter as defined in the Piping Class)
- Design CA (Corrosion Allowance)

This data comes from the Piping Classes that are [defined in Settings](/docs/miro-specific-settings#defining-piping-classes-in-settings).

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pic%201-UH2VV0XL.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D)

## Calculating Minimum Wall Thickness(TMIN)

The CML Details page allows you to calculate the Minimum Wall Thickness using the [TMIN Calculators](https://ims-handbook.cenosco.com/v414/docs/minimum-wall-thicknes-tmin-calculations). These calculators are based on recognized industry standards, specifically ASME Section VIII (Vessels, Heat Exchangers) and ASME B31.3 (Process Piping). See [Calculating Renewal Thickness with TMIN Calculator](https://ims-handbook.cenosco.com/v414/docs/pei-condition-measurement-locations-cmls-details-screen#calculating-renewal-thickness-with-tmin-calculator).

## The CML Tab

The CML section provides a list of CMLs for the selected Circuit. The **CML** tab shows an overview of the CMLs. The CML grid columns are explained [here](/docs/miro-cmls#CML).

The CML section is used to create and maintain the applicable CMLs for the selected Circuit. The grid shows a toolbar which can be used to do so.

CML toolbar:

| Icon | Action | Description |
| --- | --- | --- |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-nzakqsox.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-61eu5u95.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Edit or Cancel and Save | Edit or if in Edit mode the Cancel and Save buttons show. Save changes you made in the editable grid (such as Renewal Thickness, Renewal Basis or Nominal WT). |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1695402631232.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | New and Delete | Create a new CML, which opens a new screen in which CML data for the new CML should be populated. Or Delete an Existing CML. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1695402654920.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Export | Export the list of CMLs to a Microsoft Excel file. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1695402667145.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Copy | Copy a selected CML. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1695402684819.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Paste | Paste the copied CML as a new CML, measurements are not copied. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-chuy1zf4.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Move | Move (copy) CMLs to another Circuit. This way you can also move (copy) old wall thickness measurements to a "new Equipment". A recalculation will happen at both the origin and destination Circuit. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-9yq1bbjz.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Select New Predefined MP | Opens the registered MPs for the CML and allows you to directly add other Measurement Point(s). |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-q9nsiisa.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Show only selected | Check to show only the selected rows. |

## The CML Measurement History Tab

The **CML Measurement History** tab shows the list of Wall Thickness (WT) Measurements per actual Measurement Point (MP), performed in each Measurement Set (MSET) – Measurement date.

CML Measurement History grid:

| Column | Description |
| --- | --- |
| Active | Indicator whether the CML is active or inactive. |
| Sub Circuit | Sub-Group of the selected Circuit, for grouping similar CMLs within a Sub-Circuit. The Sub-Circuit-CML combination should be unique. If you do not want to group CMLs you can use this as a short description. It is a mandatory field. |
| CML | CML, click to open CML details. |
| Description | Short description of the CML. |
| Nominal Diameter | Nominal Diameter. |
| Actual OD | Actual Outside Diameter. |
| NWT | Nominal Wall Thickness. |
| RWT | Renewal Wall Thickness - Minimum Wall Thickness for the selected CML |
| RCA | Remaining Corrosion Allowance |
| RL | Remnant Life date |
| NID | Next Inspection Date |
| AMP | Actual Measurement Point |

CML Measurement History toolbar:

| Icon | Action | Description |
| --- | --- | --- |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-nzakqsox.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-61eu5u95.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Edit or Cancel and Save | Edit or if in Edit mode the Cancel and Save buttons show. Save changes you made in the editable grid (such as Renewal Thickness, Renewal Basis or Nominal WT). |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-954qrnk9.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | New | Create a new CML, which opens a new screen in which CML data for the new CML should be populated. Or Delete an Existing CML. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1695402654920.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Export | Export the list of CMLs to a Microsoft Excel file. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-chuy1zf4.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Move | Move (copy) CML to another Circuit. This way you can also move (copy) old wall thickness measurements to a "new Equipment". A recalculation will happen at both the origin and destination Circuit. |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pei-circuits---details-page-image-9yq1bbjz.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Select New Predefined MP | Opens the registered MPs for the CML and allows you to directly add other Measurement Point(s). |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pic%201(112).png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Legend | Click to show the legend. For more information also see [MiRO Reviewing Errors and Warning (CML History tab)](/v414/docs/m-idap-errors-and-warning). |
| ![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pic%201(113).png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D) | Condense dates | When you have many CMLs, use this option to make one column per year. |

You can use the filter to find specific CMLs. For example filter for CMLs with Warnings and Errors. For more information on the Measurement quality see [MiRO Reviewing Errors and Warning (CML History tab)](/v414/docs/m-idap-errors-and-warning).

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/pic%201-L7S7DZNH.png?sv=2026-02-06&spr=https&st=2026-10-28T14%3A20%3A18Z&se=2026-10-28T15%3A20%3A18Z&sr=c&sp=r&sig=zTDwQ3qGWTMjhTk3LhtzMoQIdk1ApCcp0WL2gaAx380%3D)The filter can be used to find Warnings and Errors.

See the [PEI CMLs Details page](/v414/docs/pei-condition-measurement-locations-cmls-details-screen) for more information.