Regulation of Sellafield and GB
Decommissioning Sites
2nd Fukushima decommissioning Forum
Iwaki- July 2017
Mina Golshan – Director, Office for Nuclear Regulation, UK

Contents• About ONR: who we are and what we do?
• Regulatory Challenges at Sellafield• Our Approach to regulation of Sellafieldand decommissioning sites• Progress so far in pictures• Conclusions

INDEPENDENT REGULATOR with aMission:‘To provide efficient and effective regulation ofthe UK nuclear industry, holding it to account onbehalf of the public’~ 550 staff (370 technical specialist inspectors)

Liverpool

Cheltenham

LondonONR’s Principal Functions• To grant licences to companies to use sites tooperate nuclear installations – cradle to grave• Inspect and enforce the law – 36 Standard
Licence Conditions (LC) and other Regulations• To review and assess safety cases to inform
decisions to permission specified activities• Setting standards – usually de-facto eg Safety
Assessment Principles, SyAPs, Guidance etc
Our authority is for: nuclear & industrial safety,
security, transport & supply-chain purposes.

GB Regulatory Regime• Is non-prescriptive; it sets broad goals forlicensees in seeking safe, secure andenvironmentally responsible hazard and risk
reduction• Allows great flexibility for duty-holders e.g.
can support prompt or deferred approaches• ONR is, proportionate and pragmatic; weobserve the UK Regulators’ Code• Policy of openness and transparency toengender public confidenceDecommissioning, Fuel and Waste
Sites in the UK• Total of 21 Licensed sites•Sellafield
NDA owned•10 shutdown Magnox reactors• 3 research and restoration sites• 7 waste management and fuel-cyclefacilities
ONR also provides advice
related to licensing of adeep Geological Disposal
Facility (GDF)

Sellafield Licensed Site in NW EnglandONR's strategy for regulating Sellafield
The strategy identifies three key outcomes, against
which ONR will measure its success:• Accelerated hazard and risk reduction across theSellafield site;• Evidence-based confidence that the licensee iscomplying with its statutory obligations and thatworkers and the public are protected from thehazards of the site;• Stakeholder confidence that ONR's regulatory
approach is appropriately targeted, risk-based,
proportionate and effective.

Fundamental principles of ourstrategy for regulating Sellafield» Agree Common priorities» Effective use of resources acrossall stakeholder organisations» Removal of barriers andunnecessary bureaucracy» Removal of distractions anddiversions» Appropriate incentives and removalof disincentives» Application of “Fit-for-purpose”
solutions» Balance of risk
» Communications

Sellafield, Decommissioning, Fueland Waste DIVISION
Sellafield
DF&W

Major
projectsSCIEMagnox Swarf Storage Silo

Overall Picture of MSSS Hazard
and Risk Reduction• Liquor Activity Reduction (LAR)
transfer (to Site Ion Exchange Effluent Plant, SIXEP)• Install 3 Silo Emptying Plants (SEP) for
waste retrieval• Long-term intermediate storage in 3m3boxes

Quiescent Passive Ventilation

MSSS Retrieval of Waste - SEP

Pile Fuel Storage Pond
Fuel completely removed from the pond last year and 12 drums of sludge
retrieved and encapsulated. Key regulatory milestone for 2017/18 is regulate
SL such that it achieve retrieval and encapsulation of 100 drums

First Generation Magnox Storage Pond•

First Generation Magnox Storage Pond (FGMSP) – retrievals commenced
in April 16 and >25 skips had since been retrieved equating toapproximately 50 tonnes.

Image © Sellafield Limited

Pile Fuel Cladding Silo
Removal of the deflector plates from the Silo (PFCS) commenced in Sep 2016,
installation of six new containment doors completed in Nov 2016 with the firstmonolith removed and penetration sealed

Waste retrievalsbrought forwardto commencein 2020

Thank you