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Ksivusya [100]
3 years ago
6

1. Using a typical frequency value for the initiating event and PFD values provided in class lectures, estimate the mishap or co

nsequence frequency for a cooling water failure if the system to be cooled is provided with the following IPLs: (1) Personnel action with a 10 min response time, and (2) A basic process control system (BPCS).
Engineering
1 answer:
algol133 years ago
5 0

Answer:

a basic process control system is necessary as long as the work by the personnel in charge is efficient, this reduces by 90% the errors or failures to calculate the system to operate

Explanation:

Production staff human error

 Another reason why a breakdown can occur is due to an error of the production personnel. This error, in turn, can originate from:

Error of interpretation of an indicator during the normal operation of the equipment, which causes the operator or driver of the installation to make the wrong decision

Incorrect performance in the event of a machine failure. For example, introducing water into a hot boiler in which water has been lost visually; as it is not known how much water is inside, it may be empty and hot, so when water is introduced it will produce instant vaporization, with the consequent increase in pressure that can even cause the boiler to explode.

Physical factors of the operator: this may not be in perfect condition to carry out his work, due to dizziness, sleep, fatigue accumulated by long working hours, illness, etc.

Psychological factors, such as demotivation, problems external to work, etc., greatly influence the proliferation of operational errors

Lack of clear systematic instructions, such as procedures, technical instructions, etc., or poor implementation of these  Lack of training

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Answer:

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x_{A-B}=55.620\: km  

Explanation:

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Now, we need to find the distance after 25 min at a constant speed. To get it, we need to find the speed at the end of the first distance.

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Then the second distance will be:

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The final distance is calculated whit the decelerate value:

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Therefore, the distance between the station A and B will be:

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I hope it helps you!

 

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