Overview
The objective of this workshop is to understand of developing a safe design during development using hard mitigation, rather than solely relying upon soft mitigation (PPE) to manage the resulting residual risk. PDR/CDR, support this design development process:
- The Preliminary Design Review (PDR), provides confidence that the main risks have been identified and can be mitigated through safe design.
- The Critical Design Review (CDR) ensures the hard mitigation necessary to demonstrate ALARP have been fully incorporated into the design prior to manufacture
Task
Impact on Design
Review the information below about the Oil SSTS pump and update the Padlet to identify if the information impacts the technical design, compliance with legislation and/or the Oil SSTS Safety Case. Where relevant add notes to each tab to:.
- Explain your reasoning
- To identify which legislation is impacted (refer back to your Teams Legislation Database)
- Any new Safety Requirements resulting from the new information. Where appropriate, you may need to update the the Oil SSTS SRD.
New Information on Pump
[Hint: you can copy these one by one into the Padlet]
- The pump capacity is 1000m3/hour
- The pump can be remotely controlled
- The pump operates between 5 to 20 bar
- The pump is designed to be corrosive resistant for maritime, with cadmium plating
- The pump can be isolated for monthly maintenance
- The pump is no heavier than 35kg, and means are provided for manual installation
- The pump immediately reports, via the network, leaks, bearing failures, local fires, flow rate, loss of flow, and pressure
- The pump is designed to pump some flammable liquids and gases
- The pump can operate in temperatures between -40 to +80 degrees C
Impact of New Information
Elements of PDR/CDR
Review the information/activities below and capture in the Padlet which information you would expect to have prior to Preliminary Design Review (PDR) or the Critical Design Review (CDR). Where appropriate add notes to each tab to explain your reasoning.
[Hint: you can copy these one by one into the Padlet]
- Compliance with requirements (Actual or predicted) with a low level of risk.
- Environmental testing planned
- Features that the pump will have to manage functionality, performance and failure modes
- Identification of explosion proof tests
- In service experience evidence provided
- Maintenance simulations, installation trials performed
- Safety analysis completed including FTA, FMECA, Detailed Hazard Analysis, dealing with any risks.
- Safety Assessment (Prelim Haz ID and Assessment performed)
- Software proven in test
- Some testing may have already been performed (high risk stuff)
- Statements of predicted compliance with requirements
- Test results or test plans agreed