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Extracted Content
(This appendix is not part of this guideline. It is merely informative and does not contain requirements necessary for conformance to the guideline.)
INFORMATIVE APPENDIX C COST AND BENEFITS OF THE COMMISSIONING PROCESS
This appendix provides an example of how to implement part of Guideline 0. It is not intended to be a comprehensive representation or a best-practice example. Practitioners applying the Cx should carefully follow Guideline 0 and applicable commissioning technical guidelines tailored to their specific projects.
C1. OVERVIEW
The Cx focuses on producing a quality-based system that achieves the OPR.
This appendix discusses the potential benefits and where they accrue and quantifies these benefits by providing evidence of potential costs and savings.
C2. DISCUSSION OF NEW COST ITEMS
Ultimately, the Owner of the facility will determine the extent of the Cx Activities and who will be responsible for each phase of work. The intent here is to outline the scope of work that represents new cost items rather than to assign responsibilities for each task. The cost of the Cx should be considered as a part of the project budget.
C2.1 Design Professional. In addition to the design professional’s typical scope of work, including the preparation of design drawings and specifications, the Cx often requires that the design professional work with the CxP to integrate the Cx Activities into the project specifications. These activities typically include the following:
a. Test requirements and documentation b. Operational, maintenance, and troubleshooting documen tation requirements c. Construction checklists d. Systems Manual e. Comprehensive training program for O&M personnel and
users
The design professional may also be responsible for reviewing the Cx Plan at the various phases of the process and for delivering the BoD in a format specific for the Owner.
C2.2 CxP. The activities accomplished by the CxP as defined in this guideline require that additional funds be allocated during the Predesign Phase, Design Phase, and Construction Phase. These funds are allocated from the savings obtained through fewer change orders and requests for information and through reduced problems during start-up of the systems and occupancy of the facility.
C2.3 Contractors. The completion of some detailed tests is unique to the Cx. The contractor will have additional work and costs associated with completing these tests.
C3. DISCUSSION OF BENEFITS
For convenience and clarity, benefits will be discussed as they relate to major participants in the Cx: the design professional, the contractor, and the Owner.
C3.1 Benefits to the Design Professional. Potential benefits include the following:
a. Facility achievement of the of OPR b. Reduced risk exposure c. Improved knowledge base for use in future designs and
installation d. Benefit of other participants’ input, leading to the most
cost-effective design and operation e. Reduced number of interference drawings during con struction due to improved communication and coordination throughout the project
C3.2 Benefits to the Contractor. Potential benefits include the following:
a. Improved planning and coordination through the imple mentation of the Cx Plan b. Improved coordination between different trades and
reduced likelihood of site interference drawings required of contractors throughout the project; reduced number of deficiencies at substantial completion; reduced number of callbacks c. Reduced number of calls for operational guidance due to
participation in training programs for O&M personnel
C3.3 Benefits to the Owner. Potential benefits include the following:
a. Improved operator knowledge of how to optimize the facil ity O&M due to the early inclusion of operators in the Cx b. Reduced training requirements due to continuously
updated documentation of how systems should operate and be maintained (Personnel will only need to be trained with regard to changes.) c. Facility performance is in accordance with the OPR d. Systems Manual provides an easy reference document for
system and assembly O&M e. Reduced downtime due to better diagnosis of failures f. Improved ability to provide accurate information to occupants on facility operation and maintenance g. Lower operating costs due to improved operational tech niques h. Benefits to building occupants, including greater worker
productivity, reduced complaints, and reduced incidence of absenteeism
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