Tuesday, May 22, 2012

Schedule & Commissioning and the Future of LEED

By Toby Considine, The New Daedalus

Bamboo_zen

NREL has recently released a report recommending tagging standards for building systems. This tagging standard is part of a larger recommendation on proper commissioning standards. The same report (http://www.nrel.gov/docs/fy11osti/50073.pdf) posits that a properly commissioned building system interface be able to offer up a light-weight building model, linked to these standard tags. This creates standard semantics for the building system as a minimum commissioning requirement for a future version of LEED.

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Friday, June 24, 2011

6 Easy Tips for Completing Commissioning on Schedule

Coolingtower1
Commissioning is often compressed at the end of the project, lumped in with start-up, TAB and move-in. How do you avoid schedule compression? Well, it's not always easy but we have found that the best way to get a team on schedule is to:

  1. Promote the Pre-Requisites: Help them understand the pre-requisites required before Cx can start. This can range from things like power to the BMS panel, TAB being complete, programming being finished.
  2. Set Priorities Together: Help the team prioritize. For example, if most of the HVAC equipment is in the basement - then ask the GC and the electrician to coordinate getting power to that part of the building first. If you do this right, you will likely improve team relationships. 
  3. Sooner not Later: Help them understand that BMS control panels need power sooner, not later. If the panels are late getting power, then a lot of check-out and validation tasks get delayed. If you can't get permanent power, ask for temporary power.
  4. Program Ahead: Require the BMS contractor to prove that their programming is done ahead of time - versus they don't start working on it until they show up for start-up and commissioning.
  5. Program per SOO: Verify with the BMS contractor - ahead of time - that they are programming the job per the APPROVED control sequences of operation (SOO), versus 'the programmer is doing it the way he always does."
  6. Phase the Cx: Try not to be overly insistent that EVERYthing is ready before the Cx guy shows up. Be willing to work in phases, particularly when a job is behind schedule. You'll be seen as a team player, and will tend to get far better cooperation.

 

Friday, April 1, 2011

Commissioning domestic water: waterless faucets have MORE germs!

Waterless_faucet
Hands-free faucets harbor germs, Johns Hopkins study says

LA TIMES: Hands-free electronic faucets can save a lot of water -- and because you don't have to touch them with your grubby fingers to turn them on, have widely been assumed to help fight the spread of germs, too.  

But a team at the Johns Hopkins Hospital in Baltimore has discovered that at their facility, electronic faucets were more likely to be contaminated with Legionella bacteria than the old-fashioned manual type.  

So much more likely that the hospital actually ripped out the new-fangled plumbing in patient care areas, and elected to purchase traditional fixtures for new clinical buildings that are set to open in 2012.

"Newer is not necessarily better when it comes to infection control in hospitals," said Johns Hopkins infectious disease expert Dr. Lisa Maragakis, in a statement.  Maragakis was the senior investigator on the research.  

Initially, the team wasn't seeking to compare traditional and automatic faucets. Rather, it planned to test new faucets to see how often they needed to be flushed out with the treated water hospitals use to combat waterborne bacterial infestations.  

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