|
Risk
Management and the Photogrammetric Project Manager
By Stanley C. Budhram and J. Edward Kunz
Introduction
Although risks can open up avenues of opportunity,
most people focus on the potentially negative aspects of risk on a project's
cost or schedule.
Digital
Orthophoto with associated CADD Data Layers for QA/QC purposes, as displayed
in ArcView.
Throughout the 1950s and 1960s, and even
into the 1970s, most photogrammetric mapping companies were quite small.
This handful of instrument companies took on small projects ranging in
cost from $1,000 to $50,000. It was rare indeed for a photogrammetric
firm to receive a $100,000 contract. Small companies, servicing mostly
the engineering market, maintained low overhead and were able to obtain
work and manage projects while containing risk.
In the 1980s and 1990s, the industry expanded
exponentially from small, professional organizations to large, high-tech
companies. However, these larger photogrammetric firms often clung to
the old-style management techniques they had employed in the past. Many
of these firms failed to recognize that, as the dollar-volume of contracts
increased, so did the risk.
In the aforementioned environment where
risk is a highly visible element, limited amounts of risk management were
introduced into projects by project managers (PMs). The PMs who were unaccustomed
to dealing with risks were unable to effectively quantify and manage them.
They tended to handle risks as "new crises" and consequently scrambled
to look after them. This type of risk management can be classified as
the "fire fighter approach." Instead of anticipating potential risks and
preparing contingency plans, the PMs dealt with the consequences of each
problem as they developed. This reactive form of management-crisis management-can
be both inefficient and ineffective, potentially leading to project failure.
As a result of this crisis mentality, risks may not be fully understood
within project management.
In today's higher risk environment, alternatives
to the "fire fighter approach" of project management are imperative in
order to preserve a project's profitability and a client's level of satisfaction.
The authors hereby suggest an alternative
approach, one that is based on the Project Management Body of Knowledge
(PMBOK) and identifies the following elements of the risk management process:
Risk Identification
Risk Quantification
Risk Response Development
Risk Response Control
The aim of this article is to introduce
project managers and senior management personnel to the broad concepts
of project risk management, and to motivate them to employ the risk management
process in evaluating project risks and minimizing the negative impacts
thereof.
Risk Identification
Risk identification is a systematic way of examining the work breakdown
structure (WBS) by listing every possible risk that the project could
encounter. Some examples of risk identification in a typical digital orthophoto
photogrammetric mapping project include the following:
Poor-quality project planning
Misidentification of project boundaries
Incorrect number of control points
Incorrect number of flight lines
Improper photography negative scale
Incorrect assumptions of available resources versus project schedule
Poor-quality geodetic control
Incorrect values for ground control points
Insufficient number of ground control points
Improper placement and/or inadequate density of control points
Poor-quality aerial photography
Improper aerial photography negative scale
Insufficient aerial photography coverage of the project area
Unacceptable cloud cover or other environmental factors
Unacceptable photographic blemishes
Excessive crab
Excessive tilt
Poor-quality scans
Scanning at the incorrect resolution
Poor aerial triangulation (AT) solution
Incorrect or insufficient digital terrain or digital elevation
models (DTM/DEM)
Poor-quality digital orthophoto imagery
Poor tonal balance
Visible seams
Incorrect file delivery format
Incorrect data projection
Incorrect delivery media
At a minimum, risks must be identified,
including where the risks originate-whether internal or external-at various
key points in a project. At this stage, the PM is not yet attempting to
quantify the risk or impose a dollar value on certain types of risk. He
or she is only listing as many potential risk items as can be determined.
It should be noted that many risk items affect other production steps
that follow. For example, an incorrect number of flight lines generated
in the project-planning phase will affect all phases that come later.
Risk Quantification
Risk quantification is the most common technique used to assess potential
risk. It involves assigning probability, cost and duration to risk. This
technique is used because risk involves uncertainty. A simple probability
model that may be employed is the normal distribution curve.
This can be illustrated as follows. Since
PMs may state that there is a 98 percent chance that flight planning will
be correct, or that there is a 95 percent chance of the flight being completed
within a four-week window of opportunity, one can use an average of the
two to assign a probability of risk.
After this probability of risk has been
assigned, the project's cost and/or duration must be determined. For example,
if the cost of the flight planning is $75,000-including by inference the
cost of aerial photos, ground control and/or airborne GPS, and/or IMU-and
there is a two percent probability that it may be incorrect, then the
immediate risk is calculated to be $1,500. If the cost of the flight is
$75,000 and there is a 95 percent probability that the schedule will be
met, then the risk is $3,750.
The flight-planning risk example noted
above assumes that the cost of an error in flight planning affects only
those project tasks so listed. In reality, an incorrect flight plan can
affect all succeeding tasks, including creation of digital elevation models,
generation of planimetric features, and so on. It is important to note
that, as tasks are added to a contract, risks are also likely to increase.
Risk Response Development
After risks have been identified and quantified, the PM should engage
in risk response development. It must be determined if risks are to be
addressed immediately, or instead at a later time. In some cases, negative
consequences from risks that are deferred until later will actually increase.
For example, if the assumption is that a project area does not have full
photographic coverage due to a missing flight line, the longer it takes
to determine and correct this error, the higher is the risk for cost overrun,
schedule slippage, and possible project failure.
The PM's role in risk response development
is generally that of an advisor. He or she may be asked by senior managers
to answer such questions as, "Should the project proceed as is and the
potential problem be dealt with at a later date?" or, "Should the project
be stopped and the error corrected?"
The project manager must be equipped with
the tools necessary to provide the sort of advice required by senior management.
These would include the knowledge of scheduling software such as Microsoft
Project, the ability to graphically illustrate the impact of re-flights
on the project schedule, access to and knowledge of spreadsheet software,
and the ability to numerically illustrate the potential financial impact
of dealing with the problem at a later date.
Risk Response Control
The next step in the risk management process is risk response control,
of which there are three main goals:
Elimination of Risks (Aerial photography example)
Reduction of Risks (Vigorous quality control, traceable shipping)
Passing on of Risks (Sub-contracting)
For example, the addition of a trusted
sub-contractor to a proposal response can serve all three purposes of
risk elimination, risk reduction, and the passing on of risks. A sub-contractor
may be more efficient and effective at producing a specific piece of a
product than is one's own organization, and may also assume the liability
for producing that part of the product.
Some theoreticians believe that the ultimate
goal of any organization should be to totally eliminate risk. However,
total elimination of risk is only a theoretical concept. All business
ventures have risk associated with them, no matter what precautions have
been taken. It is dangerous to confuse the reduction of risk with the
elimination of risk. For example, an organization's risk may appear to
be eliminated in the production of aerial photography products because
the aerial photography firm employed to capture aerial imagery has assumed
liability for production of the final aerial photography product, the
film. However, risk still exists based on the fact that one's organization
has provided the aerial photography firm with the photography coverage
area. This coverage area contains a certain amount of risk of being incorrect.
This outside firm cannot be held liable for providing an incorrect photography
coverage area. Risk also exists when the aerial photography firm fails
to provide acceptable photography. Even though it is responsible for the
quality of the end-product the fact remains that, without high-quality
aerial photography, no work can be accomplished and both organizations
suffer the consequences.
While many photogrammetry companies have
excellent quality-control measures for reducing risk in their production
processes, a PM should not automatically assume that the final product
is error-free. Project managers should have the knowledge and resources
available to complete quality-control checks on the products being produced
for their clients. However, PMs cannot spend all of their time completing
quality-control data checks.
Some methods of quality control might include
the use of desktop mapping software such as ArcView or MapInfo to view
selected imagery and mapping features for completeness and adherence to
contract specifications. The PM may also wish to examine quantitative
and qualitative aspects of the aerial-photo products before production
begins.
This direct examination of mapping products
by the PM provides an additional level of quality control that can enhance
customer satisfaction with the final product, provide the PM with experience
working directly with the data, and reduce risk.
The PM can provide quality-control reports
directly to the client as a means of enhancing communication and building
trust. PMs are also responsible for ensuring that all required products
are received in good condition by the customer, and within the required
timeframe.
To mitigate the risk of project products
being misrouted, damaged in transit, lost by the customer, or delivered
late, we recommend the following shipping procedures:
Utilizing a traceable method such as UPS, FedEx, Airborne, etc.
Including the letter of transmittal inside the shipping package,
with a copy placed in the project folder
Following up with the delivery service to ensure receipt of the
item, with documentation of the receipt placed in the project folder
Asking the client to provide written acknowledgment of the receipt
of delivery, with copies of this acknowledgement placed in the project
folder.
Another method of risk response control
is the passing on of risks. A common example involves the sub-contracting
of aerial photography survey control. Some mapping companies do not have
the capital, expertise, required knowledge of the region to be mapped,
or the willingness to accept the risk of competing in the aerial photography
survey-control business. Thus they sub-contract collection of aerial photography
survey control to firms whose exclusive business is the acquisition of
survey data, including aerial photography survey control. In most instances,
survey control is sub-contracted to a firm located in or near the region
to be mapped. This serves a dual purpose of passing the risk of collecting
data on to another firm, and also of instantly eliminating the risk of
sending surveyors into the field who may not be knowledgeable of the geography
of the region that is to be mapped.
It is important to note that a risk still
exists where the surveying firm may fail to provide acceptable aerial
photography survey-control data. Even though the surveying firm is responsible
for the quality of the end-product - the control data - the fact remains
that, without high-quality aerial photography survey-control data, no
work can be accomplished and both organizations suffer the consequences.
Summary
Risk surrounds all aspects of life, including business projects. One must
therefore confront it, analyze it, quantify it, and determine whether
to avoid it, pass it on, or minimize it. Use of a risk management model,
including risk identification, quantification, response development and
response control, is vitally important to a project's success.
Effective project managers may be in place
within an organization, but they and their senior managers must ask themselves
the question, "Do we, based upon the risk management model, have the skills
and the necessary tools (including both hardware and software) to effectively
perform all required risk management tasks?"
About the Authors:
Stanley C. Budhram is a senior project manager with BAE SYSTEMS
ADR. He may be contacted via e-mail at sbudhram@adrinc.com.
J. Edward Kunz is a proposal manager with BAE SYSTEMS ADR. He may
be contacted via e-mail at ekunz@adrinc.com.
Back
|