Question: Consider the liquid storage tank with a low-level inter-lock, as shown in Fig. 10.4. Suppose that an independent low-level alarm is added, with its set-point

Consider the liquid storage tank with a low-level inter-lock, as shown in Fig. 10.4. Suppose that an independent low-level alarm is added, with its set-point value above the value for the low-level switch. If both the low-level alarm and the low-level interlock system fail simultaneously, the pump could be seriously damaged. What is the probability that this occurs? What is the mean time between failures?

Failure rates (faults per year):
Solenoid switch: Î¼_S = 0.01
Level switch: Î¼_L_S=0.45
Level alarm: Î¼_A = 0.3

PT - Coolant Яс LT AT Distillate Feed Reflux R XD thB, LT Heating medium Яh AT Bottoms B хв Figure E10.4

PT - Coolant LT AT Distillate Feed Reflux R XD thB, LT Heating medium h AT Bottoms B Figure E10.4

Step by Step Solution

★★★★★

3.42 Rating (174 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Solenoid switch S 001 Level switch LS 045 Level alarm A 03 Notation PS the probability that the sole... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Process Dynamics Control Questions!

Consider the liquid storage system shown in figure. Only volumetric flow rates, q and q, can be manipulated. Determine the model degrees of freedom, NF, and the control degrees of freedom,NFC. 96 42...

Consider the liquid storage system of Exercise 15.4 but suppose that the band valve for qs is replaced by a pump and a control valve (cf. Fig). Repeat parts (a) through (c) of Exercise 15.4 for the...

Consider the liquid storage system in Fig. E8.13. Suppose that q 1 must be kept constant, and, consequently, h 2 is to be controlled by adjusting q 2 . Suppose that the q 2 control valve is...

Consider the liquid storage tank in Fig. 2 . The effluent flow rate F 2 is proportional to the liquid level h of the tank ( i . e . F 2 = r h ) . Figure 2 : Liquid tank Using the appropriate...

Problem 2.2 Consider the storage tank example (Example 1.4) with K = 0.8. (a) Define the system (sysl) in state-space form using the MATLAB command ss. (b) Define the system (sys2) in transfer...

Answer the questions below. For full credit show any of the following: 1. Bloomberg Screenshots 2. Excel Files or Screenshots 3. Manual calculations 1. Hanson's financial forecast is estimating this...

plz solve them 3. A continuously stirred tank reactor (CSTR) has the inlet and outlet flowrate of qi and q in ( m3/s ), respectively. Reactant A is introduced to the CSTR at a concentration CA0 (mol/...

consider a simple liquid storage tank with one inlet flow.... Conisder a simple liquid storage tank with one inlet flow Fi) and an exit line that has a valve. Using the principles of fluid mechanics,...

23:15 . LTE 23.15

Answer the questions and show your steps. The liquid storage tank shown in Figure 1 has two inlet streams with mass flow rates wi and uy and an exit stream with flow rate ws. The cylindrical tank is...

In order to test the durability of as new paint, a highway department has test strips painted across heavily traveled roads in eight different locations. If, on the average, the test strips disappear...

The monthly usage for a component supplied to an appliance assembly plant is 5,000 parts. There are 21 working days in the month and the effective operating time of the plant is 450 min per day....

Find the general solution of the following differential equation. Primes denote derivatives with respect to x . st ( xy + y ) ( 8 + x * ) = 4 x

=+What is lean?

A dissolved oxygen analyzer in a bioreactor is used to provide composition measurements at each sampling time in a feedback control loop. The open-loop transfer function is given by (a) Suppose that...

The discrete transfer function of a process is given by (a) Convert this transfer function to an equivalent difference equation. (b) Calculate the response y(k) to a unit step change in u using...

To determine the effects of pole and zero locations, use Simulink to calculate the unit step responses of the discrete transfer functions shown below for the first six sampling instants, k = 0 to k =...

Executive Chalk is financed solely by common stock and has outstanding 39 million shares with a market price of $38 a share It now announces that it intends to issue $570 million of debt and to use...

Instructions: Complete each of the following four problems using the TVOM calculations within Excel. The assignment MUST be done on an Excel spreadsheet (you will need to create your own spreadsheet)...

b VEE Paradoxically, liquidity problems with receivables and/or inventory means that the current ratio is higher than when there are no such liquidity problems True o Falso