Drainage Inspection and Assessment Theory (DIAT)

4.88 (8 Ratings)

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Categories Drain Inspection, Drain Maintenance, EUSR Certificated, MSCC5 Coding

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Course Prerequisite(s)

Please note that this course has the following prerequisites which must be completed before it can be accessed
TrueTrain Induction (free, but must be completed before enrolling on any EUSR course).

About Course

This Drainage Inspection and Assessment Theory (DIAT) online course is designed for any professional involved in maintenance or condition assessment of below ground drainage systems. CCTV assessment using MSCC5 coding is described extensively. The course is EUSR approved for e-Learning and includes basic drainage concepts, ownership, legislation and regulatory requirements, pipe condition coding definitions, serviceability and remedial recommendations. The DIAT is designed for new or experienced operatives involved in drainage investigation and assessment.

Basic drainage concepts.
Drain inspection techniques.
CCTV inspection of drainage systems.
MSCC5 Coding
Serviceability of drainage systems.
Repair recommendations.
Provision of site plans
Law and Ownership

Course Curriculum

Basic Concepts
In this lesson, we'll explore the concepts of drain and sewer ownership, as well as the maintenance responsibilities for single and multiple property scenarios. Understanding these responsibilities is crucial for property owners, managers, and sewer surveying professionals.

Drain and Sewer Definitions

01:36
Single Property Maintenance Responsibility

02:36
Multiple Property Maintenance Responsibility

01:12
Drain and Sewer Definitions Quiz

Standards, Regulations and Regulatory Authorities
This module outlines the regulatory information that relates to drainage systems in the UK.

Working Safely
It is important that when working on drainage systems you are not endangering yourself, other workers or the general public. This module covers basic health and safety regulations and safety issues.

Protecting Property – The Importance of Drainage Maintenance
Proper drain maintenance is essential for preventing foul water and surface water drainage issues that can lead to blockages, disruptions, damages, and health and safety concerns. In this lesson, we'll explore the benefits of planned preventative drain maintenance contracts and how they can help protect your property or business from the risk of flooding.

Drainage Design
Increase your knowledge on drainage appliances, assets, general design and typical systems.

Above Ground Assets

02:44
Drainage Appliances and Equipment

01:40
Below ground Pipes, Pipe Fittings and Joints

04:32
Gulleys (or gullies)

03:46
Soakaways

06:11
Interceptor Traps

02:02
Drainage Design Quiz 1
Access Points

04:30
Rocker Pipes

00:41
Drainage System Backdrops

00:57
Channel Drains

01:31
Picture Test
Catch Pits

01:24
Separation Tank

01:21
Drainage Design Quiz 2

SUDs, Misconnections and Off Grid Systems
Sustainable Urban Drainage Systems description. Misconnections and how to spot them, and Off Grid Systems (where there is no suitable public sewer connection).

Drawing a Site Plan
An important aspect of any drainage survey is the provision of a site plan that relates to the survey report information. This will help the client understand where their drains and drainage apparatus is as well aiding the drainage contractor when they are considering remedial recommendations.

Investigation and Reporting
Considering the correct methods for inspecting drainage systems to ascertain their condition. In this module we discuss methods and best practice when surveying drainage systems.

The CCTV Survey: Quality First
This module covers the CCTV survey and how to ensure the you get the best results and provide a quality survey.

Survey Reporting
How to code and classify using BS EN 13508-2 based definitions.

CCTV Survey Condition Observations
Understanding condition observations and defect codes for drainage surveys.

Structural Observations and Defects
Examples and definitions of structural defects such as cracks, fractures, joint issues, holes and breaks.

Operational Codes and Descriptions
Describing defects that affect the operational capacity of drains and sewers

Construction Observation Codes and Descriptions
In this module we are looking at changes in the fabric of the drain or sewer between manholes and noting these in a quick and accurate format.

Miscellaneous observation Codes and Descriptions
This module covers the condition codes that don't fall into the other categories. These are generally not related to defective areas.

Observation Understanding Test
This is a multiple choice test of your observation and defect understanding. There will be 20 images of defects or observations. You will select what you think is the correct definition. It is recommended you complete this assessment on a large screen device with a mouse.

Repair Recommendations
The best practice for remedial recommendations based on drainage survey results is discussed in this module.

Level

All Levels
Total Enrolled

38
Duration

20 hours
Last Updated

October 31, 2025
Enrollment validity

Enrollment validity: 30 days
Certificate

Certificate of completion

A course by

Ian Cameron

Head of Training Centre /Instructor

If you want to complete any of our courses, please complete the Induction Course first. This is a free course and provides guide lines for course completion.
A copy of the latest edition of the WRc Manual of Sewer Condition Classification is advised but not required. The training course covers MSCC5 coding in depth and tests candidates on defect interpretation.
The WRc Drainage Repair Book is recommended but not essential.
This course is EUSR approved and can be used as evidence of CCTV inspection and assessment certification of drainage systems.
Once completed successfully the candidate will be registered with EUSR as confirmation of certification.

Training for the Drainage Industry