---
title: "PL Fit for Service"
slug: "pl-fit-for-service-overview"
tags: ["PLSS"]
updated: 2026-09-01T23:41:16Z
published: 2026-09-01T23:41:16Z
canonical: "ims-handbook.cenosco.com/pl-fit-for-service-overview"
stale: true
---

> ## 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 Fit for Service Overview

Take note

This overview explains the fitness-for-service assessment approach in IMS PLSS, which is based on pipeline corrosion defect assessment codes such as DNV RP-F101 and ASME B31G.

The fitness for service assessment, in general, is based on two approaches:

- [ILI/IP data](/v410/docs/plss-ili-comparison) – standard assessment in the FFS module.
- [Non-piggable assessment](/docs/plss-non-piggable-pipelines) – an assessment that caters to the case where inspection data is not from ILI/IP.

We advise that the technical authority for the Pipeline and subsea asset class should ensure that the fitness for service assessment is:

- Conducted for all types of defects and loading conditions above workmanship standards.
- Duly record in an appropriate system, or in the element section of IMS PLSS, where the assessment is not calculated by IMS PLSS (for age-related degradation with a volumetric morphology and a plastic collapse limit state predominantly under internal pressure using level 1 assessment methods, i.e., a burst of corrosion defects).

The relationship between the generalized workflow and IMS PLSS for the fitness for service assessment is defined in the Figures below.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/Untitled (22).png?sv=2026-02-06&spr=https&st=2026-10-28T22%3A55%3A35Z&se=2026-10-28T23%3A55%3A35Z&sr=c&sp=r&sig=wV1vSsuQTF9QXXzOW%2FLPgOLcQrSnlg20uig8QJMzcJM%3D)

Generalized workflow

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-1763722569408.png?sv=2026-02-06&spr=https&st=2026-10-28T22%3A55%3A35Z&se=2026-10-28T23%3A55%3A35Z&sr=c&sp=r&sig=wV1vSsuQTF9QXXzOW%2FLPgOLcQrSnlg20uig8QJMzcJM%3D)

IMS PLSS process/modules: Fitness for service assessment.

In addition to this FFS online manual also refer to [PL Non-Piggable Pipelines](/v410/docs/plss-non-piggable-pipelines) and [PL ILI Comparison](/v410/docs/plss-ili-comparison).