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Frequency > Frequency Aug 2003
Commissioning,
Shmishioning....Who Needs It? We All Do!
Commissioning
is a quality assurance process for buildings from predesign
through design, construction, and operations. It involves
achieving, verifying, and documenting the performance
of each system to meet the building's operational needs
within the capabilities of the documented design and
equipment capacities, according to the owner's functional
criteria. Commissioning includes preparing project operational
and maintenance documentation and training operation
and maintenance personnel. The result should be fully
functional systems that can be properly operated and
maintained throughout the life of the building.
ASHRAE HVAC
Applications CD (2003)
Chapter 42
My local ASHRAE chapter recently
hosted a panel discussion on commissioning. The panel
consisted of two architects, two mechanical engineers,
and two mechanical contractors. The discussion turned
into a pretty spirited debate, especially when one of
the mechanical contractors objected to the group consensus
and stated that if designers were doing their jobs properly
and if contractors were doing installations properly,
commissioning wouldn't even be necessary!
To me, that sentiment seems
like an enormous simplification of the design and construction
process. Let's be serious for a moment; even if architects
and engineers never made mistakes, and even if contractors
always followed plans and specs to the letter, that
still wouldn't guarantee a perfect project. Why not?
Because facility managers are a fickle bunch!
In many years of working in
and on facilities, I have never been involved in a construction
or renovation project where there were zero design "issues."
I have never experienced complete adherence to plans
and specs. Even the most rock solid facility manager
will change something through the course of the project.
And changes aren't necessarily bad things!
With major, multi-million dollar
projects requiring multi-year schedules from conception
through completion, it's probably reasonable that staff
planning and space needs will evolve. And even with
a small project, it's usually a good thing when a contractor
approaches the design team with a big grin and asks
a question like, "Are you really sure you want me to
do what you put on the plans?"
When cooperative relationships
are in place and all parties share the same expectations
around results, minor changes can be done with a conversation
and an e-mail confirmation. It won't take a five figure
change order and a two week project delay.
But I digress. Let me get back
to the feisty panel discussion/debate. Noticeably absent
from the panel were the facilities managers-people like
us who get to approve pay requests for (and then attempt
to manage) components that the architects, engineers,
and contractors design and install. When I think about
it, it's sort of appropriate that an owner's representative
wasn't on the panel, because one of the primary reasons
commissioning is so incredibly important is because
owners' interests are not always the primary consideration.
Think about the facilities
you manage (or any other projects under construction)
and then consider the following questions:
- Did your design team get
"outside the box" and take advantage of new or sustainable
technologies that could have reduced life cycle costs
and lessened your environmental footprint? Or did
it prefer quick, familiar, and easy approaches?
- Did your building's architect
give much thought to the amount of space needed in
your mechanical and electrical rooms or accessibility
to areas that require frequent or infrequent service?
- Did your building's design
engineers consider or communicate options related
to the cost or expertise required for maintaining
the systems they specified? Are any of your systems
too complicated for your maintenance staff?
- Is your facility as flexible
as it should be? Can you easily grow into additional
space or can you sublease if staffing levels drop?
- Did someone confirm that
your systems performed as intended after you moved
in and your building was fully loaded with equipment
and people?
- If you took occupancy in
the summer, did someone return to confirm system performance
in the winter? (Or vice versa?) Does your building
now have different seasonal operating characteristics?
Should it?
- Was your most recent new
construction or renovation project engineered by experienced
professionals combining best practices with actual
field knowledge? Or did junior engineers or designers
use rules of thumb to "cut and paste" prior designs
on your organization's investment?
Buying in to the importance
of commissioning can get facility managers, designers,
and contractors sitting at the same table before, during,
and after construction to confirm common understanding
of space intentions, operational goals, technology use,
and maintainability. As the facility manager, you can
also get to know the people involved and develop a sense
of confidence around individual participants' ethics
and commitments to the final product.
Depending on the nature of
a project, the merits of bringing in a third party commissioning
agent are debatable. Designers and contractors usually
prefer to check and balance themselves. But a third
party can provide you with the benefit of an unbiased
perspective that might be less reluctant to question
design or construction decisions, results, or mistakes.
Of course, this third opinion
isn't without cost. It's true that third party consultants
may feel compelled to dig deep for trivial problems
to justify their fees. This should come down to a judgment
call by an informed facility manager after considering
the pros and cons of each option.
As facility professionals,
we wear a lot of hats when providing safe, comfortable,
productive workplaces for our organizations. Commissioning
is another important and complex topic where we need
to be able to speak the language not just to survive,
but to thrive. Properly operating architectural, mechanical,
electrical, and plumbing systems pay huge dividends
when occupant comfort and productivity are maximized
and when energy consumption is minimized.
But commissioning doesn't end
when a project is over. As we make operational changes
to our spaces and systems, we can drastically influence
the overall facility performance. And since most of
us are unable to monitor the performance of every individual
system and its impact on the rest of the facility continuously,
it's probably a good idea to consider budgeting for
"re-commissioning" in our preventive maintenance plans.
It's never too late to make sure "all systems are go!"
Send Crane an e-mail at jeff_crane_pe@yahoo.com.
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