What is an expected financial outcome without SIS if the incident occurs every 10 years?

• A. $1,000 annually
• B. $10,000 annually
• C. $5,000 annually
• D. $2,500 annually

Answer: (B)

To determine the expected financial outcome without a Safety Instrumented System (SIS), it's essential to consider the frequency of the incident and its associated costs. If an incident is expected to occur every 10 years, this can be quantified into an annual expected cost by dividing the total cost of the incident by the recurrence interval.

When calculating the expected financial outcome, if we assume that the incident leads to a total cost of $100,000, for example, over a decade, the annual expected loss would be the total cost divided by the number of years:

$$\text{Annual Expectation} = \frac{\text{Total Cost}}{\text{Years}} = \frac{100,000}{10} = 10,000$$

This calculation indicates that, without a SIS in place, the expected financial loss would be $10,000 per year. This consistent calculation illustrates that when an incident happens every 10 years, the expected annual financial impact from that risk translates to an average of $10,000 annually. This is reflective of the potential risk management costs that organizations need to account for when evaluating the necessity and effectiveness of implementing a SIS for mitigating such risks.