Safety report assessment guidance (technical aspects)

Criterion 5.1

The Safety Report should show a clear link between the measures taken and the major accident hazards described.

Relevant Technical Measures Documents

Control Systems

Criterion 5.2

The Safety Report should demonstrate how the measures taken will prevent foreseeable failures, which could lead to major accidents.

Relevant Technical Measures Documents

Control Systems

Criterion 5.2 has been subdivided into lower level criteria, and has been grouped, and can be found on the following pages

Criterion 5.2.1 - Design

This includes the following Criteria:

• Criterion 5.2.1.1
  The Safety Report should show that the establishment and installations have been designed to an appropriate standard.
• Criterion 5.2.1.2
  The Safety Report should show that a hierarchical approach to the selection of measures has been used.
• Criterion 5.2.1.3
  Layout of the plant should limit the risk during operations, inspection, testing, maintenance, modification, repair and replacement.
• Criterion 5.2.1.4
  Utilities that are needed to implement any measure defined in the safety report should have suitable reliability, availability and survivability.
• Criterion 5.2.1.5
  The Safety Report should show that appropriate measures have been taken to prevent and effectively contain releases of dangerous substances.
• Criterion 5.2.1.6
  The Safety Report should show that all foreseeable direct causes of major accidents have been taken into account in the design of the installation.
• Criterion 5.2.1.7
  The Safety Report should show how structures important to safety have been designed to provide adequate integrity.
• Criterion 5.2.1.8
  The Safety Report should show how the containment structure has been designed to withstand the loads experienced during normal operation of the plant and all foreseeable operational extremes during its expected life.
• Criterion 5.2.1.9
  The Safety Report should show that materials of construction used in the plant are suitable for the application.
• Criterion 5.2.1.10
  The Safety Report should show that adequate safeguards have been provided to protect the plant against excursions beyond design conditions.
• Criterion 5.1.2.11
  The Safety Report should describe how safety-related control systems have been designed to ensure safety and reliability.
• Criterion 5.2.1.12
  The Safety Report should show how design systems, which require human interaction have been designed to take into account the needs of the user and be reliable.
• Criterion 5.2.1.13
  The Safety Report should describe the systems for identifying locations where flammable substances could be present and how the equipment has been designed to take account of the risk.

Criterion 5.2.1.1 webpage

The Safety Report should show that the establishment and installations have been designed to an appropriate standard.

Relevant Technical Measures Documents

• Control Systems
• Drum / Cylinder Handling

Relevant Documentation and Case Studies for Criterion 5.2.1.1

Criterion 5.2.1.2 webpage

The Safety Report should show that a hierarchical approach to the selection of measures has been used.

Relevant Technical Measures Documents

Control Systems

Relevant Documentation for Criterion 5.2.1.2

Criterion 5.2.1.3 webpage

Layout of the plant should limit the risk during operations, inspection, testing, maintenance, modification, repair and replacement.

Relevant Technical Measures Documents

• Control Systems
• Design Codes - Buildings / Structures
• Emergency Response / Spill Control
• Explosion Relief
• Hazardous Area Classification / Flameproofing
• Inspection / Non-Destructive Testing (NDT)
• Maintenance Procedures
• Plant Layout
• Quench Systems
• Relief Systems / Vent Systems
• Segregation of Hazardous Materials

Relevant Documentation and Case Studies for Criterion 5.2.1.3

Criterion 5.2.1.4 webpage

Utilities that are needed to implement any measure defined in the safety report should have suitable reliability, availability and survivability.

Relevant Technical Measures Documents

• Control Systems
• Operating Procedures
• Plant Modification / Change Procedures
• Reliability of Utilities

Relevant Documentation and Case Studies for Criterion 5.2.1.4

Criterion 5.2.1.5 webpage

The Safety Report should show that appropriate measures have been taken to prevent and effectively contain releases of dangerous substances.

Relevant Technical Measures Documents

• Control Systems
• Design Codes - Pipework
• Design Codes - Plant
• Emergency Isolation
• Leak / Gas Detection
• Reaction / Product Testing
• Relief Systems / Vent Systems
• Roadways / Site Traffic Control / Immobilisation of Vehicles
• Secondary Containment

Relevant Documentation and Case Studies for Criterion 5.2.1.5

Criterion 5.2.1.6 webpage

The Safety Report should show that all foreseeable direct causes of major accidents have been taken into account in the design of the installation.

Relevant Technical Measures Documents

• Active / Passive Fire Protection
• Control Systems
• Corrosion / Selection of Materials
• Design Codes - Buildings / Structures
• Design Codes - Pipework
• Design Codes - Plant
• Explosion Relief
• Inspection / Non-Destructive Testing (NDT)
• Lifting Procedures
• Operating Procedures
• Plant Layout
• Plant Modification / Change Procedures
• Relief Systems / Vent Systems
• Roadways / Site Traffic Control / Immobilisation of Vehicles
• Reaction / Product Testing
• Training

Relevant Documentation and Case Studies for Criterion 5.2.1.6

Criterion 5.2.1.7 webpage

The Safety Report should show how structures important to safety have been designed to provide adequate integrity.

Relevant Technical Measures Document

• Control Room Design
• Design Codes - Buildings / Structures
• Design Codes - Plant

Relevant Documentation and Case Studies for Criterion 5.2.1.7

Criterion 5.2.1.8 webpage

The Safety Report should show how the containment structure has been designed to withstand the loads experienced during normal operation of the plant and all foreseeable operational extremes during its expected life.

Relevant Technical Measures Documents

• Control Room Design
• Design Codes - Buildings / Structures
• Design Codes - Plant

Relevant Documentation for Criterion 5.2.1.8

Criterion 5.2.1.9 webpage

The Safety Report should show that materials of construction used in the plant are suitable for the application.

Relevant Technical Measures Documents

• Control Systems
• Corrosion / Selection of Materials
• Raw Materials Control / Sampling
• Reaction / Product Testing

Relevant Documentation for Criterion 5.2.1.9

Criterion 5.2.1.10 webpage

The Safety Report should show that adequate safeguards have been provided to protect the plant against excursions beyond design conditions.

Relevant Technical Measures Documents

• Control Systems
• Design Codes - Plant
• Explosion Relief
• Operating Procedures
• Relief Systems / Vent Systems
• Reliability of Utilities

Relevant Documentation and Case Studies for Criterion 5.2.1.10

Criterion 5.2.1.11

The Safety Report should describe how safety-related control systems have been designed to ensure safety and reliability.

Relevant Technical Measures Documents

• Control Systems
• Earthing
• Hazardous Area Classification / Flameproofing
• Inspection / Non-Destructive Testing (NDT)
• Emergency Isolation
• Lifting Procedures
• Operating Procedures

Relevant Documentation for Criterion 5.2.1.11

Criterion 5.2.1.12 webpage

The Safety Report should show how design systems, which require human interaction have been designed to take into account the needs of the user and be reliable.

Relevant Technical Measures Documents

• Control Room Design
• Control Systems
• Design Codes - Plant
• Lifting Procedures
• Operating Procedures
• Permit to Work Systems
• Training
• Warning Signs

Relevant Documentation and Case Studies for Criterion 5.2.1.12

Criterion 5.2.1.13 webpage

The Safety Report should describe the systems for identifying locations where flammable substances could be present and how the equipment has been designed to take account of the risk.

Relevant Technical Measures Documents

• Earthing
• Hazardous Area Classification / Flameproofing
• Inerting

Relevant Documentation and Case Studies for Criterion 5.2.1.13

5.2.2 - Construction

This includes the following Criteria:

• Criterion 5.2.2.1
  The Safety Report should show that the installations have been constructed to appropriate standards to prevent major accidents and reduce loss of containment.
• Criterion 5.2.2.2
  The Safety Report should describe how the construction of all plant and systems is assessed and verified against the appropriate standards to ensure adequate safety.

Criterion 5.2.2.1 webpage

The Safety Report should show that the installations have been constructed to appropriate standards to prevent major accidents and reduce loss of containment.

Relevant Technical Measures Documents

• Control Systems
• Design Codes - Plant
• Plant Modification / Change Procedures

Relevant Documentation for Criterion 5.2.2.1

Criterion 5.2.2.2 webpage

The Safety Report should describe how the construction of all plant and systems is assessed and verified against the appropriate standards to ensure adequate safety.

Relevant Technical Measures Documents

• Control Systems
• Inspection / Non-Destructive Testing (NDT)
• Operating Procedures

Relevant Documentation and Case Studies for Criterion 5.2.2.2

5.2.3 - Operation

This includes the following Criteria:

Criterion 5.2.3.1

The Safety Report should show that safe operating procedures have been established and are documented for all reasonably foreseeable condition.

Relevant Technical Measures Documents

• Control Systems
• Operating Procedures

Relevant Documentation and Case Studies for Criterion 5.2.3.1

5.2.4 - Maintenance

This includes the following Criteria:

• Criterion 5.2.4.1
  The Safety Report should show that an appropriate maintenance scheme is established for plant and systems to prevent major accidents or reduce the loss of containment in the event of such accidents.
• Criterion 5.2.4.2
  The Safety Report should show that there are appropriate procedures for maintenance that take account of any hazardous conditions within the working environment.
• Criterion 5.2.4.3
  The Safety Reports should show that systems are in place to ensure that safety critical plant and systems are examined at appropriate intervals by a competent person.
• Criterion 5.2.4.4
  The Safety Report should show that there is a system in place to ensure the continued safety of the installations based on the results of periodic examinations and maintenance.

Criterion 5.2.4.1 webpage

The Safety Report should show that an appropriate maintenance scheme is established for plant and systems to prevent major accidents or reduce the loss of containment in the event of such accidents.

Relevant Technical Measures Documents

• Control Systems
• Inspection / Non-Destructive Testing (NDT)
• Maintenance Procedures
• Permit to Work Systems
• Reliability of Utilities

Relevant Documentation and Case Studies for Criterion 5.2.4.1

Criterion 5.2.4.2 webpage

The Safety Report should show that there are appropriate procedures for maintenance that take account of any hazardous conditions within the working environment.

Relevant Technical Measures Documents

• Hazardous Area Classification / Flameproofing
• Maintenance Procedures
• Permit to Work Systems

Relevant Documentation and Case Studies for Criterion 5.2.4.2

Criterion 5.2.4.3 webpage

The Safety Reports should show that systems are in place to ensure that safety critical plant and systems are examined at appropriate intervals by a competent person.

Relevant Technical Measures Documents

• Drum / Cylinder Handling
• Inspection / Non-Destructive Testing (NDT)

Relevant Documentation for Criterion 5.2.4.3

Criterion 5.2.4.4

The Safety Report should show that there is a system in place to ensure the continued safety of the installations based on the results of periodic examinations and maintenance.

Relevant Technical Measures Documents

• Inspection / Non-Destructive Testing (NDT)
• Maintenance Procedures

Relevant Documentation and Case Studies for Criterion 5.2.4.4

5.2.5 - Modification

This includes the following Criteria:

Criterion 5.2.5.1

The Safety Report should describe the system in place for ensuring modifications are adequately conceived, designed, installed and tested.

Relevant Technical Measures Documents

Plant Modification / Change Procedures

Relevant Documentation for Criterion 5.2.5.1