Office for Nuclear Regulation

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Portsmouth Operational Berths planning area revised

9 February, 2016

The Office for Nuclear Regulation (ONR) has re-determined a revised area around the Portsmouth Operational Berths. ONR is required to make these decisions under the Radiation (Emergency Preparedness and Public Information) Regulations 2001 (REPPIR).

The revised areas are where the lead local authority, in this case Portsmouth City Council (PCC), is required to have an emergency plan in place to protect the public in the unlikely event of a radiation emergency.

The off-site emergency planning areas have been revised from circles with 1.5 km radii from the berth points, to the following areas:

  • Portsmouth / Gosport Area – an area extending beyond the minimum radial distance of 1.5 km from the centre points of the HM Naval Base operational berths, where the boundary follows, in the main, the existing off-site emergency plan boundary, the inner edges of roads, property fence lines, property boundaries and distinctive pathways on land. It includes parts of Portsmouth and Gosport, all of Whale Island to the north of the jetties, and Haslar Marina to the south
  • Spithead Anchorages – the combined area based on 1.5 km radius circles from the Spithead No 5, No 6 and No. 7 anchorage points, and the Spitsand (Spithead) and No Man’s Land sea forts.
  • Stokes Bay C Anchorage – an area of 1.5 km radius from the Stokes Bay C anchorage point.

ONR is clear that the increase in the overall planning area does not reflect an increased risk to the public from the site and that the existing emergency planning arrangements currently offers appropriate protection to the public. The change in area is a result of ONR formalising existing good practice and using its revised principles for determining more effective REPPIR off-site emergency planning areas with the intention that this will lead to additional improvements in public protection.

Mike Finnerty, ONR Director of the Cross ONR Programme, said: “Although, our assessment of the radiation hazards from a nuclear submarine berthed at the Portsmouth Operational Berths confirm that the overall risk has not increased, we believe that the enhanced REPPIR emergency planning is in the best interests of public safety, demonstrating our commitment to continuous improvement.”

“Following our revised principles, ONR inspectors have reviewed our assessment of Navy Command’s detailed evaluation of the radiation hazards, and have worked with Portsmouth City Council to ensure that existing good practice and practical considerations relevant to the area have been taken into account when defining the new area for the off-site emergency plan.”

ONR has written to PCC and the operators advising them of the decision. The Council will revise their off-site emergency plan in consultation with the other emergency responders to ensure appropriate arrangements are in place throughout the new areas. REPPIR requires the Council to revise their off-site emergency plan within six months of the determination (or longer period as ONR may agree in writing).

As part of PCC’s REPPIR off-site emergency planning requirements, Navy Command have arrangements in place to provide urgent countermeasures to people living closest to the sites if there is an accident. Navy Command will work closely with PCC and other responders to ensure that their arrangements continue to complement the local authority emergency plan.