|
Home
> Articles
By Issue > Building
Envelope & Exteriors > Article Aug 2003
If They Build
It, Facility Managers Will Inspect It
Facility managers' are taking
a greater stake in the construction and renovation processes
by commissioning such projects.
By BOMI Institute
Imagine for a moment, upper
management states the company is going to need more
space to house its growth and actually gives the green
light for designing a new building or a renovated office
facility. In all likelihood, the facility manager of
the aforementioned company is either going to feel compelled
to or recruited to take an active role in the construction
process.
Therefore, he or she is going
to need a plan to follow along with the construction.
Not surprisingly, more facility executives are being
charged with this responsibility of incorporating a
commissioning process into the construction contracts
and treating it as a requirement for completion status.
The overall purpose of commissioning is to verify that
the equipment meets the design intent, is installed
according to the specifications, and performs as intended.
From The Beginning
Preparation for commissioning
should begin during the design phase of a new or renovated
building project. Formal commissioning requirements
are an integral part of the design documents that form
the basis of the contract with a general contractor.
Initial commissioning activities
include the following:
- Holding safety meetings;
- Reviewing vendor contracts;
- Documenting warranties;
- Establishing systems and
equipment protocol;
- Documenting critical spare
parts;
- Developing site-specific
procedures required to operate and maintain equipment
and systems;
- Developing commissioning
checklists, schedules, and test procedures; and
- Inspecting a building's
electrical, mechanical, HVAC, and structural systems.
The Process
During each phase, engineering
and building operations and maintenance personnel should
communicate regularly to ensure every step is going
smoothly. That way, when it does come time to transfer
the overall responsibilities of the building from the
contractor to the facility manager the move is seamless.
There are four key steps in commissioning a new building:
Technical Library. The
first step in the final commissioning of a new facility
should be to collect manufacturers' manuals for all
newly installed equipment and systems. These manuals
should be organized into a technical library of information
that will be available for the maintenance department.
This library should contain standard operating procedures,
safety procedures, and information needed to develop
a preventive maintenance program. It should be used
as a base to build history files for building equipment
and systems. At a minimum, the technical library should
contain the following information:
- Copies of all construction
drawings and specifications, including as-built drawings;
- Copies of all vendor operating
and maintenance instructions, as well as information
on recommended training sessions;
- All test reports and copies
of all notes from observance reports, filed with the
manuals for each piece of equipment;
- Letters or documentation
addressing individual occupant needs that are special
and may not be included in the specifications or drawings;
- A complete list of all contractors
and subcontractors, with names of contacts at each
business and phone numbers of each contact. A contact
for emergency service should also be included; and
- A complete list of all equipment
and system warranty information. Included should be
warranty certificates, vendor letters, and contracts,
with clear definitions of when warranty periods begin
and end.
- Listing all recommended
spare parts by equipment title. This file should also
identify what spare parts are to be kept on site and
where any additional spare parts may be obtained,
including names and phone numbers of vendors.
- A list of any required operating
or maintenance procedures identified by each piece
of equipment.
Inspection. Once the
information has been gathered for the library and the
proper operating parameters have been defined, the next
step is to inspect the installation to determine whether
it complies with the construction specifications and
drawings.
This inspection includes checking
for secure mounting to the building structure, proper
mechanical and electrical connections, and physical
accessibility for servicing and operation. Facility
managers and the building owner should request a scheduled
walk through of the facility with all interrelated organizations
including contractors and subcontractors.
Testing and Documentation.
After proper installation has been verified, the equipment
is operated under normal conditions and checked for
proper voltages, amperages, rotation, pressures, flows,
and other measurable characteristics. Major equipment
may require special start-up procedures and the presence
of a manufacturer's representative to ensure compliance
to terms of the equipment warranty.
When a new system is turned
on, it rarely operates exactly as specified, even if
the controls have been fine-tuned during installation.
Once the system is running, it must be tested to verify
levels of operation and retested on a continuing basis
while adjustments are being made. In addition, system
performance must be reviewed on a continual basis until
the systems are operating properly.
System testing should include
specific performance measurements in order to verify
that proposed operating parameters have been achieved.
This may require a number of visits, tests, meetings,
and performance measurement analysis.
Verifying the operating parameters
of installed equipment must take place over time. It
is rare for any mechanical system to perform at maximum
effectiveness during the first year of cycles. There
are always balancing problems to be worked out, sensors
and thermostats to fine-tune, and so on. Energy management
systems present some distinct challenges. They can be
activated only when all other systems are in place and
operating. Some energy management systems may not work
at full efficiency until an entire cycle of seasons
has passed. It may take as long as a year to fine-tune
adjustments so all related systems perform at maximum
efficiency.
Any contract to install automated
systems and energy control systems should include a
commitment to install, test, and modify the system until
it is performing at the level of efficiency proposed
in the original cost payback documentation.
The results of these operating
tests are compared with the construction specifications.
Acceptable results are reported to the facility manager
and placed in the equipment history file to be used
to gauge future equipment conditions. Unacceptable results
are reported again to the facility manager but also
to the contractor for correction and retesting.
While doing the check, keep
in mind some helpful tips. UPS and emergency power systems
should be tested under the actual load they will receive
when activated. This is important to ensure that they
perform effectively when they are used for the first
time. Verification is also important to ensure that
everything that should be running by emergency power
is connected to the system.
It is also important to test
the actual temperatures as they occur at various points
in the building. For example, in some exposures, the
heat gain from incoming sunlight may be greater than
anticipated. The cooling system may need to be adjusted
in order to compensate for the additional gain load.
Punch List. This list itemizes the odds and ends that
need to be corrected to close out the job, such as missing
parts, vinyl-base paint smudges, nicks, and scratches.
After these items have been identified, the contractor
and the facility manager agree to a schedule for completing
them.
The punch list inspection is
usually made after the contractor files a request with
the facility manager for a certificate of substantial
completion.
Training Operations Personnel
After the systems are started
up, a training period for facility maintenance personnel
should be held. Because each system is usually aligned
to suit a specific situation, training must be system
specific as well.
Before deciding on the full
training program, define how many and which personnel
will be required to know the whole system or portions
of it. Trainee selection should be based on either anticipated
operating needs or the need for individuals to learn
basic skills for future growth. The project plan should
include budget and time sufficient to train individuals
thoroughly in the operation of the new systems.
While the commissioning process
is laborious, once it's complete, there is a brand new
building or facility that should run without a hitch.
|