ENGI 9115: Safety & Risk Engineering
Final Take Home Examination
December 11-14, 2015
To be returned on or before 14th December (10 AM)
Evaluation: 30%
Faisal Khan and Ming Yang
There are two sections A & B in the question paper (three pages)
You must sta

OYEDEJI BABATUNDE O.
201191012
EN9121 ASSIGNMENT 4
Question1:
1.
Define the errors and nature of them (Knowledge, rule or skill base) that may happen in the
following events during evacuation of the building in emergency condition.
A.
ALARM SOUNDING
B.
LO

Final Take Home Exam
Safety and Risk Engineering
Graduate Course ENGI 9115
Course Supervisors:
Dr. Faisal Khan
Dr. Salim Ahmed
Submitted By:
Muhammad Masum Jujuly
Student ID# 201289535
Email: [email protected]
Date: 17-04-2013
Problem 1: A cover plate on a pu

OYEDEJI BABATUNDE O.
201191012
EN9121 ASSIGNMENT 4
Question1:
1.
Define the errors and nature of them (Knowledge, rule or skill base) that may happen in
the following events during evacuation of the building in emergency condition.
a.
ALARM SOUNDING
SKILL

Assignment 5
Human error probability
Submission Date: November 15, 2012
1. Define the errors and nature of them (Knowledge, rule or skill base) that may
happen in the following events during evacuation of the building in emergency
condition.
a. Alarm soun

ENGI 9121: Advanced Safety, Risk and Reliability Modeling
Assignment 6: Advanced Reliability Modeling (due on November 29, 2012)
1.
Derive the maximum likelihood estimate (assuming complete data) for the parameters of:
a. Discrete Poisson distribution
b.

20 trials
A
B
Dave's Candies Simulation
Selling price
Cost
Discount price
$12.00
$7.50
$6.00
Roll of die Demand
1
2
3
4
5
6
Order Quantity
C
Probability
40
1/6
50
1/6
60
1/6
70
1/6
80
1/6
90
1/6
70
Random Number Range
Demand
0
1/6
40
1/6
1/3
50
1/3
1/2
60

Accident Modeling and Prevention
1
Accident Modeling and Prevention
The increasing complexity in highly technological systems such as nuclear power plant,
chemical and petroleum industry, defense and aerospace, aviation, maritime, and
telecommunication is

ENGI 9411
Fall 2015
Suppose
that a cable is composed of a
number of independent wires. Occasionally
the cable is subjected to high overloads; on
such occasions the probability that one wire
will fracture is 0.05. Assume that the failure
is 2 or more wire

ENGI 9411
Fall 2015
If
events occur according to a Poisson
process, then the time T1 till the first
occurrence of the event has an
exponential distribution.
PDF=e-x (x>0)
CDF=1-e-x
E(X)=?
Var(X)=?
P(X>=s+t|x>=s)=P(X>=t)
Why
this property is useful?

Dr. Ming Yang
Process Engineering
Office: IIC 1008
Email: [email protected]
One
part of the course deals with how to
extract valuable/useful information from
uncertainty real-world data.
The other part of the course deals with
how to make decision under unce

Source and Release Modeling
Page 1 of 27
Source and Release Modeling
1. Source model
Source model is quantitatively defined the release scenarios of process system
through estimating the discharge rate, the total quantity discharged (or total time of
disc

Memorial University of Newfoundland
Faculty of Engineering and Applied Science
Engineering 9411
Probabilistic Methods in Engineering
Take Home Final Examination
Dec. 14-16 (5 p.m.) 2015
Evaluation: 30%
Dr. Ming Yang
Attempt all 5 questions. Marks are as s

Term Design Project Guidelines
Learning objective:
To have design application of the probabilistic methods in engineering disciplines
Rationale
The goal of term project in this course is to provide a demonstration the understanding of
the course material

U h bud Lew
we 2% KEY
O l0$
b 4-1.) A 0.20 inch hole develops in a pipeline containing toluene. The pressure in the
pipeline at the point of the leak is 100 psig. Determine the leakage rate. The specific
gravity of toluene is 0.866.
"\
l
(1 p D 'f':~_.b c

ENGI 9411
Fall 2015
The
determination of the parameters and
the choice of specific distributions
depends on observational data.
Role of statistical inference
Source of uncertainties:
Inherent randomness
Estimation error
Point
estimation is concerned

ENGI 9411
Fall 2015
Do
not convey information on the degree
of accuracy of the estimates
How this problem can be solved?
Use a interval over which a parameter may lie
to supplement a point estimate of the same
parameter
For
a random sample of size n,

A
function from sample space to the real
line
A numerical summary of an aspect of the
experiment
Types
Discrete random variables
Continuous random variables
Hybrids
Cumulative
Distribution Function
Probability Mass Function: P(X=aj) for all j
Pro

ENGI 9411
Fall 2014
The
quantity that gives a measure of how
closely the values of the variate are
clustered
If the deviation are taken with respect to
the mean value:
(x
Discrete :Var(X)=
Continuous:Var(X)= (x x) f (x) dx
Square root of Var(X) is s

1. Introduction of the offshore platform (one paragraph, about 200~300 words roughly-Chintan)
Background of offshore platforms, what is the current state? ,what are they used for?, what types are
they?, what are the main materials used to construct?, etc.

SafetyInstrumented
Systems(SIS)
0
1
Chapter
What Is a Safety
Instrumented System?
Safety instrumented systems are designed to respond to conditions of a
plant, which may be hazardous in themselves, or if no action were taken
could eventually give rise to

Reliability Estimation and Application
CASE 1:
REDUNDANCY
In a large electronics company that manufactures small electrical parts such as resistors,
capacitors, transistors and inductors, a new component is experiencing a high failure rate.
In order to me

Fire Modeling
References
1.Pool Fire, Fireball, & Jet Fire: Assael, M. J., & Kakosimos, K., E. (2010). Fires, explosions,
and toxic dispersions: Effects calculations and risk analysis. New York: CRC Press Taylor &
Francis Group.
2.
Flash Fire: Center for

Statistical Tests
After identification of distribution, estimation of parameter and determination of
confidence of interval that we have discussed already, the final step in the selection of a
theoretical distribution is to perform a statistical test for

Elements of Risk Assessment
References:
The materials for this lecture note have been adopted from the following
references:
1. Bilal M. Ayyub. Risk Analysis in Engineering and Economics Chapman and
Hall/CRC-2003.
2. American Institute of Chemical Enginee

Elements of Risk Assessment
Course # ENG-9121
Refaul Ferdous and Faisal Khan
Faculty of Engineering
Memorial University of Newfoundland
1
Elements of Risk Assesment
10/03/14
Introduction
Risk assessment is useful to estimate the safety, reliability, and
e

Advanced Structural
Reliability Analysis
Problem solved in the Class
EXAMPLE 1
A simply supported steel beam with a 30 foot span has been designed to carry a dead load
of 70 psf and a live load of 100psf, as shown in Fig 1 the beams are spaced 10 feet apa