Office for Nuclear Regulation

This website uses non-intrusive cookies to improve your user experience. You can visit our cookie privacy page for more information.

Devonport - LC26 Compliance Inspection, follow up inquiries and 9 dock plant management meeting

Executive summary

Purpose of Intervention

This intervention at the Devonport Royal Dockyard (DRDL) licensed site was undertaken as part of the 2017/18 intervention plan and propulsion sub-programme strategy.

Interventions Carried Out by ONR

As part of this inspection we examined the implementation of DRDL’s license condition (LC) arrangements for control and supervision of operations which may affect safety. We targeted the plan of the day (PLOD) meeting in 9 dock and also the revised “planning, execution and control of isolations” process recently implemented within the submarine refit complex (SRC).

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable.

Key Findings, Inspector's Opinions and Reasons for Judgements Made

From discussions held with key stakeholders, ONR are content that DRDL are taking the appropriate remedial action and are implementing adequate improvements in the short term for crane related events. DRDL have initiated a number of internal investigations into the events which ONR will follow up on during future interventions.

DRDL initiated a safety stand down for crane operations on the nuclear licenced site due to a number of recent crane related events. DRDL are working through a number of improvement activities prior to bringing the cranes back into service. DRDL’s internal regulator is tracking progress of the improvements to ensure the safe return of cranes to service. ONR will follow up on progress during future interventions.

In SRC and 9 Dock I noted that there was significant improvement to the isolation control process, however further improvements are required with plant configuration/control and the process for updating and production of as built drawings. ONR currently have an extant regulatory issue associated with the planning, control and execution of isolations which remains open to ensure these issues are tracked to completion.

Conclusion of Intervention

We judged the licensee is adequately implementing the interim improvements relating to the events on the DRDL site. Internal investigations are underway and ONR will follow up on the associated actions and recommendations during future interventions.

ONR have conducted follow up enquiries on the crane related events and a decision record will be produced to consider the events holistically.

We judge that the licensee’s approach for controlling and supervising activities relating to plant and equipment isolations require improvement. ONR expects the Licensee to take appropriate action to address the identified shortfalls against relevant good practice.