(a)

1. (1) Commissioning is a systematic process of ensuring that building systems perform interactively according to the design intent and the department’s operational needs.
2. (2) This is achieved beginning prior to the design phase by documenting the owner’s program requirements.
3. (3) The process is continued through the design phase by documenting the design intent and through construction, acceptance, and the warranty period with actual verification of performance, operation and maintenance documentation verification, and the training of operating personnel.

(b)

1. (1) Recommissioning is the process of reverifying the performance of building systems that have been commissioned previously to ensure the systems continue to operate according to the design intent or current operating needs.
2. (2) Recommissioning may be initiated periodically or in response to a building renovation or a change in building usage.

(c)

1. (1) Retro-commissioning is the process of commissioning existing building systems that were not commissioned when originally constructed.
2. (2) It is a process to ensure building systems perform interactively according to the design intent and/or to meet the department’s current operational needs.

3. (3) This is achieved by documenting the design intent where possible and the current operational needs, measuring the existing performance, implementing necessary operational and system modifications followed by:

   1. (A) Actual verification of performance;
   2. (B) Operation and maintenance documentation verification; and
   3. (C) The training of operating personnel.

(d)

1. (1) Testing, adjusting, and balancing (TAB) is a form of commissioning that can apply to mechanical and electrical systems in a building.
2. (2) TAB is routinely specified in the construction project as a portion of the mechanical work in the technical specifications sections.
3. (3) Many specifications require the TAB specialist to be the supplier of the air devices or the controls vendor.
4. (4) The intent behind this type of specification is to require someone with a working knowledge of the air devices or the controls to be the TAB technician.
5. (5) In this approach, the TAB technician is a subcontractor that is not directly responsible to the department.