This was a planned system based intervention to determine the adequacy of EDF Energy Nuclear Generation Ltd (NGL) management of gaseous and solid radioactive waste on the Heysham 1 Power Station Site.
This intervention involved inspection of Heysham 1 Station's waste stores, systems and documentation processes for the management of gaseous and solid radioactive waste to determine whether the duty holder was in compliance with legal requirements and appropriate good practice.
Both gaseous and solid radioactive waste management systems were judged adequate and complaint to station's safety case and arrangements.
Inspection findings demonstrated that Heysham 1 Power Station's arrangements for management of gaseous and solid radioactive waste were generally satisfactory.
Some areas of maintenance of the solid waste management facility were found to be below standard. A wall within the drum store showed signs of ground water ingress. It was noted that a repair using resin injection had been carried out, but that this seemed to have been un-successful given that water was still seeping into the store. Despite this finding drums were considered to be appropriately managed to avoid contact with the water. The licensee agreed to several actions to manage and resolve water ingress issues.
Several areas were identified where improvements could be made to Station's waste management system. These were considered to have no significant impact on nuclear safety. NGL was aware of points identified and is working to improve its processes.
As a result of this inspection NGL raised a Condition Report identifying some specific improvements to be made to Task Performance Evaluation for active laboratory training and sign off on the electronic record system.
From the evidence gathered during this intervention no significant safety matters were identified related to the management of gaseous and solid radioactive waste. The maintenance of the drum storage area is not in line with good practice and the licensee has agreed to demonstrate to ONR how a management solution will be provided in the future.
The actions raised as part of this intervention related to water ingress into the drum store and training will be tracked through to resolution via the ONR site inspector's normal regulatory interactions with the Licensee.