Richard Vann: 8 things to remember about the demolition team’s principal designer

By Steve Ducker12 January 2022

While the role of the principal designer (PD) is familiar territory for many demolition professionals – and the clients who appoint us – for others it represents a significant step into the unknown.

Industrial operators who are approaching a decommissioning assignment for the first time, for example, may never have even seen these words before. So, although the position always needs to be filled – not least because it is a legal obligation – that doesn’t mean the right skill sets are recruited, every time.

So, what does the role of an effective PD truly entail and to what extent could project success be jeopardised if the position isn’t filled by the right party?

Richard Vann, managing director RVA Group Richard Vann

1. The engagement of a principal designer is a fundamental requirement, by law, for United Kingdom decommissioning and demolition undertakings.
This duty holder role is set out under the Construction Design Management (CDM) regulations, which exist to help manage health and safety on these potentially high-hazard assignments. Comparable roles exist in other regions too, including (but not limited to) ‘SiGeKo – Planning prescribed by Baustell V’ in Germany, or the requirements set out by OSHA (the Occupational Safety and Health Administration) in North America.

2. The effective fulfilment of PD – or equivalent – responsibilitie extends far beyond these regulatory frameworks.
For this reason, and many more, it shouldn’t ever be viewed as merely a ‘tick box’ exercise. In fact, the role of Principal Designer is integral to the deployment and maintenance of good practice and a secure project management structure, throughout the lifecycle of the works. The PD is therefore both an essential and key ‘recruit’ within the structure of any decommissioning team and should never be considered as something akin to a lip service appointment.

3. The role of a PD is to analyse risks, hazards and how to tackle them.
What potential risks exist on a given site? Such risks may relate to the demolition discipline itself, but will also extend to include the process-specific hazards relevant to the industrial background and current operational status of the plant concerned. The PD may therefore need to enhance their own process knowledge with that of personnel from the sector, whether that be from energy, pharmaceutical, petrochemical, and so on.
- Where do these multiple hazards reside?
- How do they interact with each other?
- When, and in what order, should the risks be approached?
- Who should tackle them?
- Why and how the process should be executed in a certain way – taking into account proven techniques, innovative new methodologies, and ever-evolving legislation.
In short, this element of the PD’s role is to provide direction to help mitigate the dangers posed to personnel, surrounding stakeholders, the environment, and the overall integrity of the project. This is by no means straightforward.

4. In establishing a safety-first mindset and a commitment to shared EHS (environment, health and safety) responsibilities throughout the entire team, the PD should also work to ensure cooperation between designers, the client, and contractor(s).
An audit and validation of the capabilities of all parties should also be undertaken, relevant to the works involved, to ensure adequate provision is made for the management of safety.

5. In recent times, I’ve seen a rise in the number of PD roles being awarded to demolition professionals – including principal contractors – with wider existing project responsibilities.
Client perceptions surrounding a stretched supply chain may account for this – at least in part – as may an operator’s internal pressures to assemble a project team at pace, if the decommissioning schedule is delayed for any reason. However, such pressures perhaps underpin exactly why the PD needs to have a clear and uncompromisingly independent position in the project.

6. This is not to say the decision to designate PD responsibilities to a contractor, for example, is unlawful, providing the appointed party can successfully fulfil every mandatory element of the duty holder role.
They may be able to effectively coordinate the level of dialogue required to maintain open levels of communication and cooperation between all designers, the principal contractor, and other works contractors, for example. But what happens if a contractor – who also holds the PD role – designs a lifting study? Who evaluates and checks this? When commercial pressures risk influencing decision making, who ensures best practice is maintained without cutting corners – even if unintentionally?

7. Nobody would ever say they wouldn’t knowingly follow best practice, of course.
And the cornerstone of any successful project is a safety-first mindset, whereby the management of EHS is considered the highest priority. But the ability to maintain a fully objective view is not always easy when project stakeholders – possibly from within the same organisation – may have conflicting responsibilities and drivers.

8. Without a neutral PD providing project management governance, the client also has little to fall back on should issues with specifications of works arise further down the line.
The PD role therefore requires protection in some respects. It’s not the position that is the most visible to an outsider looking in, for instance – but it’s a crucial one, and this is not going to change. The legal duty holder role of PD is also different to what most clients really need, which is a proficient project manager. The former naturally fits into the latter, if performed properly, whereas it is important to acknowledge that it doesn’t necessarily work in reverse.

  • Read Richard’s columns in Demolition & Recycling International magazine
Delivered directly to your inbox, Demolition & Recycling International Newsletter features the pick of the breaking news stories, product launches, show reports and more from KHL's world-class editorial team.
Latest News
Global construction equipment sales for 2022 revealed
Off-Highway Research reveals sales of global construction equipment in 2022 and looks ahead to potential sales in 2023 
Latest research: Equipment sales in Europe set to remain high
Analyst Off-Highway Research reports near-record numbers of units sold in 2022
Kobelco aims for big performance from new small machines
OEM introduces next generation to its range of mini excavators
Steve Ducker Editor, Demolition & Recycling International Tel: +44(0) 1892 786 210 E-mail:
Simon Kelly Sales Manager Tel: +44 (0) 1892 786 223 E-mail: