just completed reports for two retrocommissioning studies for different
building owners. An interesting - and potentially puzzling - similarity between
them was that they were both for relatively new buildings. One building had been completed just
one year before the owner decided retrocommissioning would be a good idea. The
other was a 4-yr-old building. Both were larger than 100,000 sq ft.
Deferred testing is performing FPT after substantial completion. Whereas systems performance testing should occur prior to the owner accepting the systems from the contractors, there are some instances where testing at the end of construction is either impractical or not meaningful.
In my October and November columns, I explored the complexities associated with motivating contractors to install, start up, and test new building systems as required to have the commissioning testing and demonstration be successful the first time. If there is an incentive for deficiency-free test results, the commissioning professional needs to be wary of the contractors wanting to stop and “fix” deficiencies during the testing process.
In September's column, we focused on the need to motivate project teams to correct systems performance deficiencies in a timely fashion follow-ing unsuccessful FPTs. This month, I'd like to explore the question of why there are unsuccessful FPTs in the first place.
My May, 2006 column introduced the concept of decommissioning as a process for thoughtfully and systematically preparing for partial renovation of an existing building - something that happens more frequently than the construction of new buildings.