We are committed to providing up to date, open and transparent content relating to our current internal instructions and guidance used to carry out our core operational work.
The material presented here is essentially the same information provided to ONR staff, but with some additional explanation. All open material is available on this website. Not all of ONR's internal instructions and guidance are open documents.
Any documents that have passed their review date remain subject to our review processes and the review dates and will be updated in due course.
Should you have any feedback on our guidance, please get in touch.
Miscellaneous/Other guidance
- Licensing nuclear installations
- ONR-LNI-GD-001 - Licensing and regulation of smaller licensee organisations with lower hazard installations
- NISCI - A Practical Guide for Enhancing Safety Culture Using the Nuclear Industry Safety Culture Inventory
- ONR-RD-REF-001 - An introduction to ONR’s technical assessment and inspection guides
- ONR-RD-REF-002 - List of regulatory acronyms, abbreviations and initialisms
- TD-HOC-GD-002 - Methodology for undertaking leadership and management for safety (LMfS) reviews
- ONR-GDA-GD-010 - New nuclear power plants: Early engagement - Joint regulatory guidance - Preliminary design review guide
- TD-HOC-GD-003 - Safety culture: Definition and model
- TD-HOC-GD-001 - Methods for assessing culture and diagnosing organisational problems
- ONR-RD-POL-002 - Risk informed and targeted engagements (RITE) policy
- ONR-GEN-GD-013 - Guidance on the assignment of dutyholder attention levels
- ONR-GDA-GD-009 - Early regulatory engagement for new nuclear projects
- CNSS-SEC-GD-001 - Nuclear transport security guidance for Class B approved carriers
- ONR-WB-PROC-001 - Whistleblowing: Process for handling protected disclosures
- ONR-WB-IN-001 - Whistleblowing: How to make a disclosure to ONR (External)
- Principles for flood and coastal erosion risk management
- CNSS-SEC-GD-002 - Nuclear Industries Security Regulations 2003 (NISR): Guidance for Inspectors
- A guide to enabling regulation
- Licence condition handbook
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NS-TAST-GD-113 - Equipment Qualification
Issue 2; Review date: April 2029
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NS-TAST-GD-079 - Design Authority Capability
Issue 6.5; Review date: July 2029
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NS-TAST-GD-042 - Assurance of validity of data and models
Issue 6; Review date: April 2031
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NS-INSP-GD-036 - LC36 - Organisational capability
Issue 1.1; Review date: April 2027
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NS-TAST-GD-103 - Emergency Power Generation
Issue 2.1; Review date: February 2028
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NS-TAST-GD-099 - Transport engineering assessment
Issue 2.3; Review date: March 2031
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NS-TAST-GD-009 - Examination, Inspection, Maintenance and Testing of items important to safety
Issue 7.1; Review date: November 2028
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NS-INSP-GD-013 - LC13 - Nuclear Safety Committee
Issue 6.2; Review date: October 2027
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