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You Might Need Commissioning if...
 

You Might Need Commissioning if...

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Presentation by Jeff Watson, CCP, CEM, Director of Technical Services, Aramark

Presentation by Jeff Watson, CCP, CEM, Director of Technical Services, Aramark

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    You Might Need Commissioning if... You Might Need Commissioning if... Document Transcript

    • You Might Need Commissioning If... Presented to the Illinois Chapter ASHRAE Tuesday, March 9, 2010 By Jeff Watson, CCP, CEM Director, Technical Services Aaramark
    • Case Studies Jeff Watson CCP - Immediate Past President Director Technical Services ARAMARK You might need Commissioning if… You might need Commissioning if… You Might Need Commissioning If... – 
    • IAQ Nightmare As Found Conditions due to Lack of clear direction Bard Units w/OA damper always open Diffusers Dripping on students Partially loaded rooms Solution Modify damper setup You might need Commissioning if… Chill Water System Design  – You Might Need Commissioning If...
    • Chill Water System Design Application – Serving Museum Design Intent 100% redundant System 42 degree chill water supply Air handlers expected to de-humidify Chill Water System Design Chill Water System Design As Found Conditions Installed per CD’s Chill Water Supply between 47-58 Space Humidity between 65% - 82% Solution Install automatic chiller isolation valves You Might Need Commissioning If... – 
    • You might need Commissioning if… Functional Functional Performance Performance Verification Verification Progress Toward Exhaust System Unoccupied Airflow 150,000 Design System (90% higher than design) CFM Turndown 150,000 cfm 120,000 $60,000 Impact System 6 CFM is unable Allowed 103,000 Leakage CFM to achieve 89,000 Unoccupied 5 84,000 CFM CFM 82,000 Initial Mode CFM Settings 4 Leakage Leakage Measured Exhaust 78,000 cfm 3 Final Airflow Design (5 fans) “Design” 2 Exhaust Airflow (2 fans) 1 Exhaust 25% 30% 40% 50% 55% Fan Staging July Aug. Sept. Nov. Jan 2000 2000 2000 2000 2001 You might need Commissioning if…  – You Might Need Commissioning If...
    • Closed Loop Heating System Closed Loop Heating System Closed Loop Heating System You Might Need Commissioning If... – 
    • Closed Loop Heating System As Found Conditions due to Incomplete work by subcontractor Closed loop system installed and started up Chemicals delivered but not put into system Solution Completely drain and flush system, install dispersant and cleaner, and then final biocide treatment. You might need Commissioning if… Discharge Air Supply Duct  – You Might Need Commissioning If...
    • Discharge Air Supply Duct Discharge Air Supply Duct As Found Conditions issue was a Code clarification – access was provided Fire damper access very limited creating an unsafe maintenance access issue Solution Install portholes on all four sides of duct You might need Commissioning if… You Might Need Commissioning If... – 
    • Mystery Electrical Problems Building occupied three months 14 overhead projectors failed Fire alarm panel failed 2 times requiring new control boards Intercom system failed 2 times requiring new power supplies Intermittent phone system failures Mystery Electrical Problems Mystery Electrical Problems  – You Might Need Commissioning If...
    • Mystery Electrical Problems As Found Conditions due to Work damaged by other trade and Incomplete work by subcontractor Main service ground located under main parking lot. Main building transformers had grounding conductor running through cabinet but not terminated. Mystery Electrical Problems Solution Install new Main service ground Bond grounding conductor at main building transformers. Mystery Electrical Problems You Might Need Commissioning If... – 
    • Mystery Electrical Problems Mystery Electrical Problems You might need Commissioning if… 0 – You Might Need Commissioning If...
    • Fire Safety Issue Fire Safety Issue Fire Safety Issue As Found Conditions due to Poor coordination between trades Smoke detector installed by electrical sub not realizing installation defeated fire damper operation. Solution Move smoke detector 6 inches. You Might Need Commissioning If... – 
    • You might need Commissioning if… Stuffy Office Stuffy Office  – You Might Need Commissioning If...
    • Stuffy Office Area As Found Conditions due to Un-trained Maintenance staff No one could explain why the cardboard was bolted down to the return air transfer grill. Solution Remove cardboard and duct tape and balance system. Family Slide Show Photo-electric Temperature Gauge You Might Need Commissioning If... – 
    • Materials Storage Materials Storage Point to Point Complete? Sometimes closed equals open!  – You Might Need Commissioning If...
    • Hey Slim..are you sure the power is off to this fan? Can we upgrade to pressure treated wood? What’s wrong with this picture You Might Need Commissioning If... – 
    • When did OSHA start requiring wire mesh gloves as standard PPE equipment? On This Project! You might not need Commissioning if…  – You Might Need Commissioning If...
    • Assumption = Perception Issue Assumption = Perception Issue Perception Issue As Found Conditions due to Perceived incomplete work Outside air damper not open when running on five different units Controller not wired to power Perceived solution Wire 24 volts to controller and set up outside air damper You Might Need Commissioning If... – 
    • Perception Issue True As Found Condition Outside air dampers were not open when running Controller was wired to power Damper motor was failed on five units – casualties of the missing ground example above True solution Replace damper motor and set up outside air damper You might need Commissioning if… You’re an Owner that wants to be confident that your building works…. when you move in! You’re an A/E that wants to make sure that the owners building meets your design intent. You’re a contractor that wants help managing the process of subcontracting technical trades and eliminating warranty calls. Jeff Watson Watson-jeff@aramark.com 678-492-5892  – You Might Need Commissioning If...
    • 0 – You Might Need Commissioning If...