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: mmj101@mun.ca
Date: 17-04-2013
Problem 1: A cover plate on a pu

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

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

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 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 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

Dr. Ming Yang
Process Engineering
Office: IIC 1008
Email: myang@mun.ca
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

Memorial University of Newfoundland
Fall 2015
Probabilistic Methods in Engineering
(ENGI 9411)
Solutions to Assignment 4
Chintan Rathod
#201584653
Chr183@mun.ca

Memorial University of Newfoundland
Fall 2015
Probabilistic Methods in Engineering
(ENGI 9411)
Assignment 1
Chintan Rathod
#201584653
Chr183@mun.ca
1. In most engineering studies, major sources of uncertainty can be grouped into four categories:
a) Uncert

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

Safety & Risk Engineering
ENGI 9115
Solution to Assignment # 1
Email
:
Dated:
Sep 23, 2015
Problem 1: Three process units are in a plant. The units have FARs of 0.5, 0.3, and 1.0, respectively.
a) What is the overall FAR for the plant, assuming worker exp

Review of Loss Prevention, Safety and Risk Assessment
Page 1 of 10
Review of Loss Prevention, Safety and Risk
Assessment
1. Importance of Safety
Prevention of death or injury to worker
Prevention of death or injury to general public
Prevention of physical

Assignment 1
Engineering 9411
Due date: Oct. 1rd, 2015
In most engineering studies, major sources of uncertainty can be grouped into four
categories:
1.
a)
b)
c)
d)
Uncertainty due to natural variability;
Uncertainty due to error in parameter estimation;

1. Introduction
Around 1891, Worlds first offshore oil platform was built on piles in the fresh waters of Grand
Lake St. Marys in Ohio, USA. Now a days, around a third of the oil and gas extracted worldwide
comes from offshore sources. This figure is like

Problems Solved in Class
_
Estimate the LFL and UFL ofthe following mixture: Hexane l.cfw_)%, Methane 1.0%,
Ethylene i094), Acetone 0.5%, Ethyl ether 0.5%, and Air 96%.
000 kg of methane escaped from a Natural gas pipeline and caused an explosion. Is
the

1.
Problems Solved in Class
A burning dump emits an estimated 3 gls of oxides of nitrogen. What is the average
concentration of oxides of nitrogen from this source directly downwind at a distance
of 3 km on an overcast night with a wind speed of 7 m/s? Yo

Problems Solved In Class
1. At 1 PM the plant operator notices a drop in pressure in a pipeline transporting
benzene. The pressure is immediately restored to l psig. AT 2:31 a la inch diameter
leak is found in the pipeline and imrnidiatlly repaired. How m

Ed
Problems solved in the Class
Use a vacuum purging technique to reduce the oxygen concentration within a
lt)tl0~gal vessel to 1 ppm. Determine the number otpurges required and the totaf
nitrogen used. The temperature is ?5"F and the vessel in originaily

Fire and Explosion
Fire
Fuel
Oxygen (Air)
Fire
Ignition source
Important characteristics
Auto-ignition temperature: A fixed temperature above
which material may not require an external ignition source for
combustion
Flash point: Lowest temperature at wh

Design to prevent fires & explosions
Page 1 of 11
Design to prevent fires and explosions
Fire and explosion preventive measures
Inerting
Use of flammability diagram
Controlling static electricity
Ventilation
Fire and explosion hazard control measures
Expl

Use of Probability Models to design
load bearing capacity and to
optimise fatigue limit in Fixed
Offshore Oil Platforms.
Group Members:
1. Chintan Rathod #201584653
2. Brianna
Memorial University of Newfoundland
Probabilistic Methods in Engineering
Use of

Use of Probability Models to
calculate load bearing capacity and
to estimate fatigue limit in Fixed
Offshore Oil Platforms.
Group Members:
1. Chintan Rathod #201584653
2. Brianna
Memorial University of Newfoundland
Probabilistic Methods in Engineering
Use

Use of Probability Models to calculate load
bearing capacity and to estimate fatigue limit
in Fixed Offshore Oil Platforms.
Group Members:
1. Chintan Rathod #201584653
2. Brianna
Memorial University of Newfoundland
Probabilistic Methods in Engineering
Use

Chapter 1
Basic Probability Models
Further details concerning the first chapter of the appendix can be found in most Introductory texts in probability and mathematical statistics. The material in the second and
third chapters can be supplemented with Stee

RELIABILITY ENGINEERING
Life Data Analysis using
the Weibull distribution
PLOT Seminar October 2008
Ing. Ronald Schop
Weibull: Reliability Engineering
www.weibull.nl
PLOT Seminar 2008
Content
Why Reliability
Weibull Statistics
Weibull Shape Parameter
Cas

Accident and Loss
Statistics
Chemical Process Safety
ChE 258
Overview
Accidents
Models
Engineering Ethics
Loss Statistics
Perceptions
Example
Definition
Accident
is an undesired event that resulted in
unwanted deterioration of
health of a living organis

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.

ANALYSIS OF FATIGUE TEST RESULTS
W. weibull
The objective of a fatigue test is, from a designer's
point of View, to determine the fatigue life of a test piece,
a specimen, or a component, subjected to prescribed sequences
of stress cycles so as to predict