Canadian Prairies Group
NEWSLETTER of Chartered Engineers Winter 2005
Chairman’s Message IN THIS NEWSLETTER
As my term of office draws to a close it
LIAISON is time to reflect on what has transpired Pai Lin Li Obituary ................................. 2
over the past two years. I will pass on
NIGEL SHRIVE the duties of leading the CPGCE at the Buried SAGD Flow Lines ....................... 3
AGM in January 2006 to the newly
elected Chairman at that meeting. It Calgary Technical Calendar.................... 3
has been a period in my career that I
will look back on with both pleasure and Data Security .......................................... 4
despair. Pleasure from the Technical
and Social Meetings that we have held Edmonton Technical Meetings ............... 5
in Calgary and sadness that we have
I Struct E President’s Tour...................... 5
been unable to stimulate sufficient inter-
LIAISON est from our members in the Edmonton
Reconstructing your face ....................... 6
area to be able to continue meetings
DAVID ELSON there. CPGCE Scholarship................................ 7
Tom Martin has been responsible for
Calgary Technical meetings. We have Privacy.................................................... 8
enjoyed a varied and very interesting
Executive .......................................... Back
series of presentations – Thanks Tom.
My personal thanks go to Ken Smart
who has tried, in vain, to keep the Ed-
monton meetings going during the past planning of the IStructE visit due to com-
year. Without the support of the local mence on the 15th. My thanks to Ted and
membership these meetings just cannot Janet Maciag for completing the arrange-
LIAISON continue. ments at such short notice.
RAY M ARSH After a quiet beginning to the year Au- A full obituary is given in this newsletter.
gust proved to be different. It is with
The President of IStructE, Mike Fordyce, and
great sadness that I report that Liz El-
Chief Executive Officer, Keith Eaton visited
son, wife of past Chairman Dave Elson,
Calgary from the 15th to the 18th August. A
passed away tragically on August 5th.
full report is contained in this newsletter. A
She supported him through 5 years of
LIAISON full programme was arranged with ample
office and will be well remembered for
opportunity for them to meet the membership
her happy nature and the many func-
ALAN RHODES and to visit industry in Calgary.
tions she (ably assisted by Dave, of
course) hosted at their home in Bow- The meeting with APEGGA was informative
ness. and addressed the many aspects of mutual
recognition – let us hope we are nearer to
Pai Lin Li, an early chairman of the
that “first step” that will lead to the recognition
CPGCE, passed away on August 11th.
of CEng as an acceptable qualification for
He was still a very strong supporter of
registration as PEng in Alberta and indeed
the Group and was Involved in the
Everyone is welcome to attend the Calgary technical presentations.
LIAISON We meet at the Danish Canadian Club, 727 11th Ave SW at 6:30 pm
TO B E ELECTED Spouses and guests are always welcome.
More details on www.cpgce.org
CPGCE Newsletter Winter 2005
I urge you to consider joining the executive next year, Obituary
new ideas are always welcome and it does not require
too much effort. Just let me know if you are inter-
The Christmas season is approaching rapidly. It is a
season of good will and happiness no matter what
your particular beliefs may be. In the coming years I
wish you all the happiness you would wish yourself
and may the New Year bring us all a more peaceful,
compassionate and tolerant world.
Bill Meadowcroft Pai Lin Li M.Bdg.Sc, B.Sc.(Eng), PEng,
F.I.Struct.E, F.I.C.E., F.A.S.C.E. 1930 – 2005.
Annual General Meeting Pai Lin Li passed away peacefully in Calgary on Thursday,
August 11, 2005 at the age of 75 years, with his family at
Saturday January 21st 2006 his side. Pai Lin was born in Canton, China, in 1930. He
Provisional details received his education at St. John's University in Shanghai
and the University of Hong Kong. He then went to Glas-
gow to pursue professional training as a civil and structural
at SAIT engineer. Until his passing, he continued to celebrate
Burns' Suppers and speak fondly of his time in Scotland.
He began his career in Hong Kong at the department of
John Ware Building Public Works. He went to Australia to complete graduate
1301 16th Avenue NW, Calgary. studies at the University of Sydney, with Pai Lin obtaining
a masters degree in building science. He brought his fam-
6.30 pm Reception, 7.30 pm and Dinner ily to Canada in 1967, settling first in Toronto, and then
Cost $30 per person Calgary in 1970. He served as Chief Building Inspector for
the City of Calgary during Calgary's boom years. Later he
Book your place by contacting
formed his own building and structural engineering con-
Roger Frayne via telephone 403-287-3051 sulting practice. He was committed to his professional ac-
tivities and proud of his affiliations. He was a Fellow of the
or email email@example.com
Institution of Structural Engineers and the Institution of
Payment must be made in advance by cash or Civil Engineers, both of the United Kingdom.
cheque by January 15th 2006
Menu and final details will be advised Until his passing, he served as Alberta Representative of
the Institution of Structural Engineers and was recently
late December honoured for his service to the Institution. Earlier, he
served as chairman of the Canadian Prairies Group of
Chartered Engineers. He was president of the Canadian
We would prefer to send your CPGCE Newsletter Building Officials Association and also served on the com-
via e-mail, if possible. Please send your email ad- mittee of the National Fire Code. His service was recog-
dress to Tom Williams at firstname.lastname@example.org nized by the Alberta Building Standards Council and the
World Organization of Building Officials. Pai Lin was com-
mitted to community service and fellowship. He was an
active member of the Rotary Club of Calgary and at one
time served as a director. He will be sorely missed by his
friends at CPGCE and our deepest sympathy goes to his
CPGCE Newsletter Winter 2005
Buried SAGD Flow Lines A thick layer of polyurethane was used and great care
by Lance Thomas Senior, Pipeline Engineer, Amec Ameri- was taken during the installation to ensure no damage
cas Limited. September 14, 2005 occurred.
As the configuration of the expansion loops is critical to
With the continued success of thermal heavy oil recovery the design great care was taken during the construction
comes the problem of connecting distant phase in the alignment of
well pads to the processing plant. During the conduit and inner pipe.
the summer of 2001, PanCanadian Energy
(now EnCana Resources) made use of a A major concern was water
novel buried piping technology at their hammer during commis-
Senlac Thermal Project to solve this prob- sioning and modelling was
lem. For the Senlac SAGD project in Sas- used to define the Startup
katchewan the project addressed the prob- procedure.
lem of piping steam and the recovered oil
from the central processing plant to well- The system was commis-
head. As in all SAGD projects continuous sioned and has been in op-
product expansion from the facility in eration now for four years.
phases A, B and C and the declining output The line is buried about a
from the wells requires the phased addition metre below the surface
and deletion respectively of interconnecting pipe. The and the insulated line has minimal impact on the fauna.
plant was on cattle raising land so the added incentive The cows appreciate the slightly higher ground tempera-
was there to minimise the footprint of the piping infrastruc- ture in winter and the line route can always be identified
ture. In the traditional design the pipe would be run above by their position. The estimated savings were 30% on an
ground on support which requires foundations and steel. above ground system
The decision was taken to bury the piping.
The major issue with burying pipe is how to deal with ther-
mal expansion. The Calgary Technical Calendar 2006
steam line is 330°
C.The three kilome- Wednesday 8th February 2006
tre pipeline system LNG Terminals
has a thermal
growth of approxi- by Wolfgang Neuhoff
mately 12 metres TransCanda Pipelines
over its entire
length. The design Wednesday 8th March 2006
selected is a prod- Underwater Vehicle and Propulsion Plant
uct used in urban Development
settings for routing
steam lines under- by Dr Ian Potter Director, Sustainable Energy
ground in industrial Futures, Alberta Research Council
Wednesday April 12th 2006
pipe is carried C02 Recovery and Utilization for EOR
within a larger di-
in the Middle East
(conduit) which al- By Doug MacDonald, Manager, Studies and
lows for expansion Developmental Projects, Chemical and Petroleum
and contraction Business Unit, SNC Lavalin
sized. Oval supports are used to support the inner pipe. A
minimum of two conventional anchor blocks are used, typi-
Note: Titles of presentations and any presenters listed
cally one at each end. Undulating terrain is handled as per
are subject to change—check the website for
a conventional gas line and the pipe was routed along the
fall lines. No isolation gaskets are available for the high
temperature so the integrity of the coating of the outer
conduit was critical.
CPGCE Newsletter Winter 2005
Data Security and Information Theory for the XXI addressed in the breaking of secret codes. Confusion
Century blocks a potential cryptanalyst from using statistical
techniques such as the fact that e, s, t the more common
Dr Mario Forcinto gave a lucid technical presentation on letters in the English language to break a code,
the rather esoteric subject to engineers of data security
and encryption. For a profession that works in rather
more basic elements such as concrete, steel, chemicals, Alice Bob
cable, etc. and for the more senior of us who reluctantly
use this technology to assist in our work, it was
something of a revelation to be advised of the
mathematical technological complexities of using a bank
card in a cash transaction.
Mario explained the information theory behind this • Encryption and Decryption Keys are different
technology using the parallel of sending secret • Encryption key is public knowledge
messages. The cryptology behind spies and encoding • Decryption key must remain secret
their secrets has direct parallels in this industry. If a
secret message is sent from one person in code to substitution is often used. Diffusing is where changes in
another then the second person needs to have the the unencrypted text cause large changes in the
decryption key to the encryption code used by the encrypted text. This is enacted by manipulating a string of
sender. To ensure security the use of this code needs to characters by a mathematical diffusing function.
be restricted. In computer systems the encryption and
Perfect secrecy and or security is obtained by using a
decryption is accomplished by algorithms, a specific kind
one time pad where only one message is transmitted
of mathematical procedure suited to computer
using this encoding. This is hard to emulate in computer
encryption. In asymmetrical or Public Key encryption the
encoding and decoding keys are different. Typically in
computer usage the encryption is common knowledge
but the decryption is secret. The RSA coding is an
example which is commonly used in the industry.
Examples were given based on prime numbers which are
key in modern computer coding.
The presentation finished with Hash functions and how
these are used in encryption. A Hash function takes a
long string (or message) of any length as input and
cipher-text (scrambled message) M : plain-text (the message)
produces a fixed length string as output, to make it
There are two types of key encryption: symmetrical and suitable for use as a primitive in various information
asymmetrical. In symmetrical encryption the keys for security applications
encryption and decryption are identical. These were used
One key issue is that as computers continue to
in the early days of computing. The key issues in a good
become more powerful, with greater
encryption procedure are confusion and diffusion as
computational ability, the complexity of encryption needs
to increase to maintain computer security. In
historical code cracking terms, once the early computers
and mathematical techniques were developed the
Enigma machine code was broken even though
it appeared to be impossible at first sight.
Nowadays computing which took days on mainframes is
executed on one's home computer within seconds.
Obviously encryption/decryption is a technology with a
limitless potential given the importance of secure and
confidential data transmission in the XXI century. It has to
keep pace with Moore's Law on microchips. Moore’s Law
states “ the number of transistors on a chip will double
every 18 months” and as a consequence computational
power increases exponentially.
advocated by Claude Shannon, the father of Information
Theory in 1949. These are the same issues that are
CPGCE Newsletter Winter 2005
For those of a mathematical bent we attached the basis
of the RSA algorithm, one of the key applications used in Moving? Moved in the last 3 months?
data security. If so, please let Tom Williams know at
(It can take a considerable time before the
RSA Algorithm institutions notify your local branch.)
Bob chooses in secret two large primes p,q with p?q and
IStructE President’s tour: Calgary, Alberta
Bob chooses e bigger than 1 with e relatively prime to p-1
and to q-1 and with e<(p -1)(q -1). President, Mike Fordyce, and Chief Executive, Dr Keith
Eaton, report on the final leg of their North American tour:
Bob calculates the decryption index d where d< (p -1)(q -1)
is such that the remainder of de on division by (p -1)(q - We were hosted by Bill Meadowcroft, Chairman of
1) is 1. More generally Bob calculates a decryption in- CPGCE (Canadian Prairies Group of Chartered Engi-
dex d where d<t =(p -1)(q -1) is such that the remainder neers). At a breakfast meeting with IStructE members
of de on division by t is 1. Here t is any number divisible and prospective members, we emphasised the consider-
by p -1 and q -1. able changes at IStructE since the previous visit to Cal-
gary in 2002 and had lively discussions about current
Bob announces his public key [N, e] and keeps his private
key d secret.
We were particularly pleased to meet Mrs Zeng Qin
Alice wishes to send a secret message M and represents M
(Emily Zeng) (M) who had recently moved to Calgary
as a number between 0 and N -1. Alice then encrypts
from China, where she gained Institution Membership in
the message M as the remainder C of Me upon division
2000 via supplementary tests in accordance with the IS-
by N and transmits C to Bob.
tructE and NABER(S) agreement. Mrs Zeng is now seek-
Bob decrypts C by calculating the remainder of Cd upon ing registration in Alberta as P.Eng using her MIStructE
division by N: this gives the original secret message M. qualification.
On a site visit to the Foothills Medical Centre we were
shown round by architect Kenneth Johnson and structural
engineer Andrew Boucher from Cohos Evamy. A
38,000m2 laboratory on four floors and a 24,000m2 clinic
Edmonton Technical Meetings on six floors are linked to an existing three-storey building
making the structure very complex. To provide the level
Two years ago, by popular request from members in and
of services and facilities that will need to be incorporated
around Edmonton, we welcomed the initiative by Dele
in the fit-out, ‘interstitial floors’ will be used in the labora-
Morakinyo to start regular technical meetings in Edmon-
tory building. The total cost is C$138M before fit-out, ris-
ton. Attendance to the meetings was good to begin with
ing to C$240M on completion. It will be an important new
but dwindled as the year progressed. Despite repeated
addition for the University of Calgary Faculty of Medicine.
requests for help in organizing the events, it was left to
Dele to arrange the events. Dele relocated to Yellowknife
On a visit to the offices of Fluor we met two structural
late in 2004 and Ken Smart took over the lead of the Ed-
engineers, Jim McFarlane and Sean Halvorsen, who are
working on the new development for extracting oil from
The response to Ken’s efforts with help from Stephen the tar sands (oil sands) in northern Alberta at the Long
Poole has been extremely poor, so much so that Ken has Lake Upgrader Project near Fort McMurray. This is part
decided he cannot spend any more time for such a low of a massive new C$70bn development to produce syn-
level of response. thetic crude oil, the sands being 500m underground. Jim
and Sean were working on the ‘hydrocracker unit’ and
It has been decided, therefore, to discontinue the regular showed us some fascinating 3-D computer images of the
meetings in Edmonton. The executive committee has complete project.
been reluctant to take this course of action but in the light
of what appears to be total disinterest from our Edmonton To obtain the oil, steam is injected into the tar sands to
members we are left with no alternative. soften the bitumen and then recover it. From a structural
engineering viewpoint, there is a great deal of complex
This does not preclude the organization of meetings of plant, equipment and pipework that has to be housed and
special interest. These will be dealt with on a one off ba- located in the large facility.
CPGCE Newsletter Winter 2005
With 3m of permafrost, there are considerable heave Clearly this was welcomed by those present, and cer-
forces, and we were shown details of the 900+ H –piles tainly both CPGCE and IStructE members present all
being installed on the site. Sitting on those will be the felt that APEGGA had moved a long way in this recogni-
(largely) steel framework – 1200t of steel in total. All con- tion process. This was very good news.
nections are bolted, and the steel is left totally bare, not
protected in any way – a deliberate policy, and more than Neil Windsor explained that MIStructE members would
adequate for the 25-year design life of the structure. almost certainly get registered as P.Eng, younger mem-
bers under the (WA) accredited
At APEGGA (Association of academic route, and older
Professional Engineers, Ge- members because of their rele-
ologists & Geophysicists of vant experience. (Everyone has
Alberta) we met the Presi- to take a professional ethics
dent, Larry Staples, Execu- examination; see information
tive Director & Registrar, Neil about routes to registration in
Windsor, and others to dis- Alberta on APEGGA’s website:
cuss the recognition of CEng www.apegga.com).
by APEGGA when engineers
wish to register using that We agreed that APEGGA,
UK-based qualification. The CPGCE and IStructE would
situation has moved forward maintain contact in the future.
a great deal in the 3 years APEGGA and the Canadian
since our last visit, and government see a considerable
APEGGA is actively working expansion and growth in the
with the registration organi- need for engineers in Alberta as
sations in 10 provinces and massive new infrastructure pro-
two territories through the jects take place or are being
Canadian Council of Profes- planned. This year they have
From left to right: Bill Meadowcroft, Andrew Boucher,
sional Engineers (CCPE). handled some 4500 applica-
Kenneth Johnson, John Charret and Mike Fordyce at
Neil Windsor explained that: tions, one third each from Al-
the Foothills Medical Centre
berta, the rest of North America,
• Canadian graduates simply need 4 year’s and the rest of the world.
The Government wants to see maintenance of high pro-
• P.Eng registered engineers in other Canadian prov- fessional standards; recognition of the unprecedented
inces have inter-provincial mobility; more than 99% economic growth in Alberta; addressing massive skills
are accepted automatically for registration in Alberta. shortages; acceptance of provisional licensing in ad-
vance of formal registration; and to bring in the maxi-
• For engineers coming to Alberta from other countries, mum number of people with the right skill sets in the
Alberta economy. Engineers are also very busy in British
APEGGA needs to see academic credentials; they then Columbia, and Alberta is definitely losing some experi-
pass the application to their Board of Examiners who enced engineers back to BC.
may, or may not, ask for examinations to be taken.
A dinner hosted by CPGCE Chairman, Bill Meadowcroft,
In this last category, APEGGA is moving towards a in the Officer’s Mess of the old Fort Calgary, was at-
‘looking to exempt’ policy whereby exams may disappear tended by 42 engineers and partners from the five engi-
altogether. This followed a survey of 9000 recently- neering disciplines.
registered P.Eng engineers which showed that the aver-
age time for processing applications had been 3-4
months for Canadian engineers and 6-7 months for those
from other countries.
Visit the CPGCE Website
APEGGA stressed that everyone still needed at least 1
year of relevant North American experience but this did For all the latest news and programs for
not have to be gained in Alberta.
CPGCE Newsletter Winter 2005
Reconstructing your Face - Bioengineering in the required to remove the implant, radiography and magnetic
Head and Neck October 14th 2005 resonance imaging (MRI) and dynamic velocity testing includ-
Ryan Swain, a doctoral candidate at the University of ing impact testing and Resonant
Alberta’ gave a stimulating presentation on the use of Frequency Analysis (RFA).
mechanical implants for prosthetics. Ryan, a graduate in One of those procedures origi-
mechanical engineering from the University of Manitoba, nally developed and tested,
gave an insight into a grey area of medical research (OSTELL), gave rise to significant
where the fields of medicine and engineering overlap. For problems in that the process was
some years now, prosthesis in the form of implanted hard to model, due the non uni-
teeth have been used very successfully to replace natural form shape of the samples, and
teeth and now this same technology is being successfully there was some difficulty in deter-
applied to other prosthesis including eyes, ears and mining the RFA of the sample.
noses as well as bone anchoring hearing aids (BAHA).
For example, BAHA has been successfully developed for As a result a more realistic test, PERITEST, has now been
those persons who are completely deaf and allows pa- developed in which a small rod, weighing 8 grams, to which an
tients to be fitted with an attachment that delivers sound accelerometer is attached, is used to induce mechanical vibra-
waves via the implant in the bone structure of the skull, tions in the implant. Variables to be taken into account in such
thus allowing that person greatly improved hearing capa- tests include the striking height, hand piece angulation and
bility. In addition, for those individuals who may have suf- azimuthal direction. Raw data is recorded and from it resonant
fered facial disfigure- frequencies are calculated. Modelling the impact process in-
ment as a result of an cluded varying the inputs with between 2 to 4 Degrees of
accident, or through Freedom (DOF) and undertaking Finite Element Analysis
the treatment of some (FEA) using ANSYS, a proprietary software program. In-vitro
forms of cancer, these laboratory experiments were then undertaken to fully under-
new techniques allow stand the processes involved and these were followed by
them to regain their lengthy analyses and numerical simulations to confirm the ef-
self esteem and live fectiveness of the procedure, its viability and repeatability.
and work a normal life. These included the measurement of both osseointegration
loss and bone loss and simulation of loss of stiffness. The re-
The implant and abut- sults of theoretical modelling correlated well with the results
ment technology com- obtained from the experimental data.
prises three parts, the
implant itself, the supporting material, normally bone, and Finally, in-vitro clinical tests were performed on a number of
the abutment, possibly an eye, an ear or even a nose. patients who had undergone the BAHA procedure and were
Implants are normally screwed into the supporting mate- conducted at the time of initial installation and then at intervals
rial which in some cases is bone a mere 4mm to 5mm of one, three, six and twelve months after that time. The test
thick. Some of the issues which have to be addressed in results indicated that although there was an initial lowering of
this process include compatibility of the insert material the resonant frequency of the implant after initial installation,
with human bone tissue, and how well the bonding be- the trend was reversed until, six months after installation, the
tween the implant resonant frequency had increased to levels in excess of those
and the natural bone measured at installation. As a result, the current protocol in
is established, a these procedures is to delay the attachment of any abutment
process known as until approximately six months after fitting of the implant.
Fortunately, the use
of virtually 100%
pure titanium for im- 2005 Scholarship Award
plants has proven to
The 2005 Scholarship award is in the admission phase where
be an excellent se-
prospective candidates are submitting the applications to the
lection since early
experiments with selection committee.
rabbits indicated that the bone “grows” into the implant This year to celebrate the 100th anniversary of Alberta as a
thus ensuring a solid anchor between the two.
province the CPGCE is awarding two engineering scholar-
Early tests to measure the effectiveness of this bonding ships. It is expected that by the time the AGM is held on Janu-
were not that scientific and included “wiggling” the im- ary 21, 2006 the committee will be in a position to announce
plant by hand, sound analyses, the amount of torque the winners.
CPGCE Newsletter Winter 2005
Your 2005 CPGCE Executive Committee
Name Responsibility Institution Telephone Email
Bill Meadowcroft Chairman Mechanical 403-251-7158 email@example.com
Alan Rhodes Secretary Chemical 403-271-5309 firstname.lastname@example.org
Roger Frayne Treasurer Mechanical 403-287-3051 email@example.com
Tom Williams Membership Electrical 403-271-8520 firstname.lastname@example.org
Charles Dempsey Scholarship Chair Mechanical 403-287-2992 email@example.com
Ken Smart Edmonton Electrical 780-459-3130 firstname.lastname@example.org
Bob Enever Editor Electrical 403-271-1953 email@example.com
Alex Crabtree Communications Mechanical 403-531-7539 firstname.lastname@example.org
Ted Maciag IStructE Visit Structural 403-249-2995 email@example.com
Ray Marsh Scholarship Electrical 403-281-1529 firstname.lastname@example.org
Leo Flaman Scholarship Mechanical 403-267-7234 email@example.com
Tom Martin Technical Civil 403-246-1542 firstname.lastname@example.org
Anthony Lam Assistant Electrical 403-503-0138 email@example.com
Adrian Dumbrava Technical Chemical 403-537-8169 Adrian.Dumbrava@snclavalin.com
The CPGCE maintains computer records of its membership. The information that is held consists of the following:
This information is kept in strict confidence by the Executive Committee and is used solely to enable contact with the
membership. The information is not used for any other purpose and is not made available to any third parties.
If you have any concerns about security of this information please contact a member of the Executive Committee.
Comments, Questions, or Concerns?
Please contact Bill Meadowcroft at: firstname.lastname@example.org