The CxP typically assists the owner in identifying the facility's requirements regarding such issues as energy efficiency, indoor environment, staff training, and operation and maintenance. An effective OPR incorporates input early in the project from the owner, operation and maintenance staff, and end users of the building, and is updated throughout the project. A properly developed and updated OPR truly becomes the definition of success for a project. This section provides an overview of commissioning drivers, benefits, goals, and principles as well as general commissioning guides, standards, and resources.
The process focuses upon verifying and documenting that all of the commissioned systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet the Owner's Project Requirements. Commissioning is an all-inclusive, quality assurance-based process for working with project teams and documenting the planning, delivery, verification, and managing risks to functions performed in, or by, facilities. Commissioning ensures building quality using design review, and in-field or on-site verification.
Commissioning also helps to maximize energy efficiency, environmental health and occupant safety. The process improves indoor air quality by making sure the building components are working correctly and that the plans are implemented efficiently and effectively.
Commissioning delivers preventive and predictive maintenance plans, tailored operating manuals and training procedures for all users to follow. Essentially, the commissioning process formalizes review and integration of all project expectations during planning, design, construction, and occupancy phases by inspection and functional and performance testing, and oversight of operator training and record documentation.
The primary goal of commissioning any project is to ensure that success for the project is clearly defined in the OPR and that the building performs as intended to fulfill that mission. The definition accurately depicts commissioning as a holistic process that spans from pre-design planning to occupancy and operations at a minimum and should also include ongoing commissioning.
Accordingly, the goals of commissioning are to:. Commissioning benefits owners through improved energy efficiency, improved workplace performance due to higher quality environments, and prevention of business losses. The cost of not commissioning is equal to the costs of correcting deficiencies plus the costs of inefficient operations.
For example, in mission critical facilities, the cost of not commissioning can be measured by the cost of downtime and lack of appropriate facility use. There are many reasons to include commissioning in project design and they vary by owner and by building type.
For example, mission critical facilities like data centers need to ensure their building systems will operate with little to no down time.
Institutional buildings will operate with less maintenance and greater reliability. Private and public building owners want energy efficient buildings that provide safe and comfortable space for occupants.
Know More. Fixing performance issues during the design phase of a project is cheaper than modifying completed work, and proactive maintenance has a lower cost than solving problems after their occur.
Commissioning can be considered an investment, given its long-term benefit in terms of building performance. Commissioning also makes energy efficiency measures more valuable, preventing a decrease in energy savings over time. With modern communication technologies and the Internet of Things IoT , the concept of monitoring-based commissioning MBCx becomes possible. Unlike normal recommissioning, where building issues are detected and fixed at regular intervals, MBCx detects issues in real time or even proactively.
This allows quick action, and drops in performance are corrected when their impact is still small. The testing procedure applied during commissioning can be broken down into pre-functional and functional performance testing.
Building equipment is tested separately for correct location, installation procedure and labeling. The procedure also includes control systems and software.
Complete building systems are tested for overall performance and adequate interaction. Testing is carried out under various conditions that are possible during normal operation and during emergencies. Commissioning not only reduces the energy consumption of building systems; it also prevents expensive breakdowns and creates better indoor conditions for occupants.
Also consider that indoor comfort and air quality lead to improved productivity in business settings. The following table summarizes the main benefits achieved with commissioning:. Building systems can sustain the operating conditions as specified in design documents, and ownership costs are kept low.
Occupants feel better, in terms of both physical health and mood. For businesses, this leads to increased productivity and profit margins. Some examples of performance issues that affect comfort are temperature extremes, humidity extremes, excessive airspeed from ventilation, unpleasant odors and noise.
Building reparations and equipment replacements are expensive and disruptive. With commissioning, their frequency is reduced drastically. Since commissioning involves documentation, it provides a clear snapshot of operating conditions.
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