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Nuclear Directorate (ND)

Permissioning inspection - Technical assessment guides

The guides available below are the latest issues.  As revised versions are produced they will replace the older versions. 

Should an earlier issue be required, please request it via ndenquiries@hse.gov.uk."

Class Definition Format Cost
T/AST/FWD Foreword [33KB]PDF Free
T/AST/002 Shielding [48KB]PDF Free
T/AST/003 Safety Systems [233KB]PDF Free
T/AST/004 Fundamental principles [21KB]PDF Free
T/AST/005 Demonstration of ALARP HTML Free
T/AST/006 Deterministic safety analysis and the use of engineering principles in safety assessment [54KB]PDF Free
T/AST/008 Safety categorisation and equipment qualification [37KB]PDF Free
T/AST/009 Maintenance, inspection and testing of safety systems, safety related structures and components [32KB]PDF Free
T/AST/010 Early initiation of safety systems HTML Free
T/AST/011 The single failure criterion [30KB]PDF Free
T/AST/013 External hazards [73KB]PDF Free
T/AST/014 Internal hazards HTML Free
T/AST/015 Electromagnetic compatibility [58KB]PDF Free
T/AST/016 Integrity of Metal Components and Structures HTML Free
T/AST/017 Structural integrity: civil engineering aspects [69KB]PDF Free
T/AST/019 Containment: Essential services [35KB]PDF Free
T/AST/020 Containment: Reactor Plant Webpage Free
T/AST/021 Containment: Chemical plants [23KB]PDF Free
T/AST/022 Ventilation [23KB]PDF Free
T/AST/023 Control of processes involving nuclear matter HTML Free
T/AST/024 Management of radioactive materials and radioactive waste on nuclear licensed sites [121KB]PDF Free
T/AST/026 Decommissioning on nuclear licensed sites [123KB]PDF Free
T/AST/027 Assessment of licensees' arrangements for training and assuring personnel competence HTML Free
T/AST/028 Control and instrumentation aspects of nuclear plant commissioning [26KB]PDF Free
T/AST/029 Graphite reactor cores [158KB]PDF Free
T/AST/030 Probabilistic Safety Analysis [167KB]PDF Free
T/AST/033 Record storage [39KB]PDF Free
T/AST/034 Transient analysis for DBAs in nuclear reactors [41KB]PDF Free
T/AST/035 The Limits and Conditions for Nuclear Plant Safety [35KB]PDF Free
T/AST/036 Diversity, redundancy, segregation and layout of mechanical plan [32KB]PDF Free
T/AST/037 Heat transporter systems [41KB]PDF Free
T/AST/038 Radiological protection [26KB]PDF Free
T/AST/039 Management for safety [57KB]PDF Free
T/AST/041 Control, storage, handling and transport of nuclear matter including fissile materials [41KB]PDF Free
T/AST/042 Containment: Validation of computer codes and calculation methods [40KB]PDF Free
T/AST/044 Fault analysis [60KB]PDF Free
T/AST/046 Computer based safety systems HTML Free
T/AST/048 Licence condition 36 arrangements [30KB]PDF Free
T/AST/049 Principles for the assessment of a licencee's "intelligent customer capability" (licencee's technical and engineering capability) [33KB]PDF Free
T/AST/050 Periodic safety reviews (PSRs) [65KB]PDF Free
T/AST/051 Guidance on the purpose, scope and content of nuclear safety cases [82KB]PDF Free
T/AST/052 Contractorisation [44KB]PDF Free
T/AST/056 Nuclear Lifting Operations [195KB]PDF Free
T/AST/057 Design safety assurance [113KB]PDF Free
T/AST/065 Function and content of the Nuclear Baseline HTML Free