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Planned Licence Condition compliance inspections - LC7, LC14, LC15, LC16 and LC17

  • Site: Trawsfynydd
  • IR number: 21-029
  • Date: June 2021
  • LC numbers: 7, 14, 15, 16, 17

Executive summary

Purpose of Intervention

This inspection was one of a series of planned inspections for 2020/21, which are informed by the ONR Decommissioning Fuel and Waste (DFW) sub-division strategy.  

Interventions Carried Out by ONR

This inspection examined the adequacy of Magnox Limited’s (ML) arrangements and their implementation on the Trawsfynydd site for compliance with Licence Conditions (LC): LC7 (Incidents on the site), LC14 (Safety Documentation), LC15 (Periodic Review), LC16 (Site plans, designs and specifications), and LC17 (Management Systems).  I discussed Trawsfynydd’s progress in closing out a regulatory issue concerning updating its licence compliance matrix document, possible future regulatory permissioning to reflect planned decommissioning activities on the site, and I also met a site safety representative.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable.

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

Based on the evidence examined it is my judgement that ML is effectively implementing arrangements for complying with LC 7, 14, 15, 16 and 17 at Trawsfynydd.  I noted several good points during my inspections and did not identify any areas for improvement that were significant enough to record.    

Conclusion of Intervention

ML’s arrangements are adequate in the areas inspected and no significant matters were identified as a result of this inspection.


Diben yr Ymyriad

Roedd yr arolygiad hwn yn un o gyfres o arolygiadau a gynlluniwyd ar gyfer 2020/21, yn seiliedig ar strategaeth isadran Datgomisiynu Tanwydd a Gwastraff (DFW) yr ONR.  

Ymyraethau a Gyflawnwyd gan yr ONR

Archwiliodd yr arolwg hwn ddigonolrwydd trefniadau Magnox Limited (ML) a’u gweithrediad ar safle Trawsfynydd ar gyfer cydymffurfiad ag Amodau Trwyddedu (LC): LC7 (Digwyddiadau ar y safle), LC14 (Dogfennau Diogelwch), LC15 (Adolygiad Cyfnodol), LC16 (Cynlluniau safle, dyluniadau a manylebau), ac LC17 (Systemau Rheoli).  Trafodais gynnydd Trawsfynydd wrth ddatrys mater rheoleiddiol ynghylch diweddaru ei ddogfen matrics cydymffurfiad â thrwyddedu, rhoi caniatâd rheoleiddiol posibl yn y dyfodol i adlewyrchu gweithgareddau datgomisiynu arfaethedig ar y safle, a chyfarfûm hefyd â chynrychiolydd diogelwch ar y safle.

Esboniad o’r Dyfarniad os Nad oedd y System Ddiogelwch wedi cael ei Barnu yn Ddigonol

Ddim yn berthnasol.

Casgliadau Allweddol, Barn yr Arolygydd a Rhesymau dros Wneud Dyfarniadau

Yn seiliedig ar y dystiolaeth a archwiliwyd, fy nyfarniad i yw bod ML yn gweithredu trefniadau i gydymffurfio ag LC 7, 14, 15, 16 a 17 yn Nhrawsfynydd yn effeithiol.  Nodais sawl pwynt da yn ystod fy arolygiadau ac ni ddeuthum o hyd i unrhyw feysydd ar gyfer gwella a oedd yn ddigon pwysig i’w cofnodi.   

Casgliad yr Ymyrraeth

Mae trefniadau ML yn ddigonol yn y meysydd a arolygwyd ac ni ddynodwyd unrhyw bryderon sylweddol o ganlyniad i’r arolygiad hwn.