Why do maintenance shutdowns get delayed? 5 of the most common reasons

/ Blog / Kirjoittaja

Blog Series: Challenges in Maintenance Shutdown Management | Part 1/5

Maintenance shutdowns are among the most important maintenance events in the process industry. During these shutdowns, significant maintenance, repair, and investment work is carried out, as well as production upkeep tasks such as cleaning, washing, and inspections, all aimed at ensuring safe and efficient production until the next shutdown.

Despite careful planning, many maintenance shutdowns run over their original schedule. Every extra hour or day increases costs, ties up resources, and delays the start of production. At the same time, production is lost, which can mean significant financial losses, especially in continuous process industries.

Usually, the reason for delays is not one big problem, but a chain of several small challenges. The following outlines the five most common reasons for maintenance shutdowns running over schedule.

The plans are not available to staff on time.

The maintenance shutdown schedule is based on the assumption that work can commence as agreed immediately at the start of the shutdown.

In practice, the start is often delayed because employees do not have clear and up-to-date instructions in time regarding what they should do and when. Plans are in place, but their finalisation stretches too close to the start of the shutdown, and there isn't enough time to properly review them with the workers before the commencement of operations.

This leads to uncertainty, further questions, and delays just when work should be starting quickly.

Typical challenges include, for example:

  • The plans are not readily available on site.

  • The work instructions are incomplete or unclear

  • The objectives of critical tasks have not been understood

  • The start of the work requires further clarification

Even a seemingly small delay at the start can cause a chain reaction that is later visible in the entire shutdown schedule.

2. Information does not flow between all parties

The maintenance shutdown involves personnel from production, maintenance, contractors, supervision, and often also the project organisation.

When information is transmitted via emails, phone calls, paper lists, and various Excel files, it's easy for situations to arise where not everyone is working with the same information.

This can result in:

  • Overlapping work

  • Waiting

  • Misunderstandings

  • delayed decisions

A common operating picture is one of the most effective ways to reduce delays related to information flow.

3. The dependencies between tasks are not sufficiently clear

Many maintenance downtime tasks cannot be started until another work phase, such as safety clearance, is complete.

If dependencies are not identified sufficiently well or their progress is not actively monitored, critical path tasks can go unnoticed. In such cases, an individual delay will begin to affect several subsequent work stages.

The more complex the shutdown, the more important it is to understand the critical path, the interdependencies between tasks, and their impact on the overall schedule.

4. The work permit process causes delays

Work permits are an important part of a safe maintenance shutdown, but if poorly managed, they can become a significant source of delays.

Typical challenges include:

  • waiting for wolves

  • Missing approvals

  • unclear responsibilities

  • Lack of knowledge by those carrying out the work

When work permits and related information are easily accessible and their status is visible in real time, waiting times are reduced and the commencement of work is accelerated.

5. The overall situation is not visible to everyone

Many maintenance shutdown delays are not caused by the maintenance work itself, but by the fact that the overall project status is not easily visible.

If management has to constantly clarify:

  • Where are we going

  • What jobs are ready

  • What problems have been observed

  • Where do the resources work?

Spending time clarifying the situation instead of managing the actual work.

A real-time situation picture helps to identify deviations earlier and enables a quicker response before small problems escalate into significant delays.

The biggest delays in maintenance shutdowns often arise from coordination.

The success of maintenance shutdowns does not depend solely on technical expertise or a good plan. It is equally important how well information flows between different parties and how effectively the progress of work can be monitored.

In many cases, the biggest scheduling challenges are related to coordination, information flow, and a lack of situational awareness.

When all parties can see the same situation in real-time, decisions can be made faster, problems can be responded to earlier, and the total duration of maintenance downtime can be reduced.

This article is part of a blog series

This writing belongs Challenges in Maintenance Stoppage Management - blog series, where we discuss the most common challenges related to planning, managing, and executing maintenance shutdowns.

In the following section:

Why does data get lost or fragmented during a maintenance shutdown? 

Why does information become fragmented across different systems, messages, and calls – and how does this affect the progress of maintenance downtime.

Would you like to identify the biggest bottlenecks in your maintenance downtime?

Tool4pro's experts will help identify the biggest bottlenecks in your maintenance shutdowns and assess how they can be reduced through better planning, information flow, and a shared situational picture.