Nexus Cx Primer 2010 01 19 Final

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Total Building Commissioning: A Primer

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  • 1. Cx 101: A Primer on the Total Building Commissioning (Cx) Process (Cx) Presented By Ian B.D. McIntosh, PhD, CCP January 19, 2010 Copyright 2010 Farnsworth Group, Inc. Presentation Overview Cx Definitions & Benefits Cx Tools & Techniques LEED Cx Overview 2007 Farnsworth Group, Inc. What is Commissioning? Definition per ASHRAE Guideline 0-2005: The Commissioning Process is a quality-oriented process for achieving, verifying, and documenting that the performance of facilities, systems, systems and assemblies meets defined objectives and criteria. 2007 Farnsworth Group, Inc. 1
  • 2. What is Commissioning? Simple Definition: An Owners quality process to verify the owner receives at the END OF A PROJECT what they stated they wanted in The BEGINNING OF THE PROJECT 2007 Farnsworth Group, Inc. What is Commissioning? Three (3) Key Approaches: New Construction - Pre-design through 1 yr of occupancy Existing Buildings - Retro Commissioning (in previously un Retro-Commissioning un- commissioned buildings) - Re-Commissioning (in previously commissioned buildings) - Ongoing Commissioning (continuance into the occupancy/operation phases) 2007 Farnsworth Group, Inc. Owners Project Requirements Definition: The Owners Project Requirements (OPR) is a dynamic document that states clearly in non- technical terms WHAT the owner WANTS based upon the project s NEEDS projects 2007 Farnsworth Group, Inc. 2
  • 3. OPR: The Vision of Commissioning 2007 Farnsworth Group, Inc. Who Commissions? Independent: Owner-led Commissioning: In-House (business as usual) Hired 3rd party Hybrid (In-house + 3rd Party) Dependent: AE-led Commissioning Contractor-led Commissioning 2007 Farnsworth Group, Inc. Why Commissioning? Building systems are far more complex The OPR will need to be verified Energy conservation and systems performance impacts the Owners bottom-line ($) Frequent problems i occupant health, safety, F t bl in t h lth f t indoor air quality and overall comfort More accessible/maintainable systems desired 2007 Farnsworth Group, Inc. 3
  • 4. #1 Most Asked Question Didnt the Owner already pay for that? Design Professional Agreement: No independent set of eyes as provided by Cx No quality verification beyond routine field observations M not have th same l May t h the level of fi ld/t ti experience l f field/testing i Construction Contract: No Cx requirements/tasks specified Limited performance criteria or test witnessing mandated, if any Not a condition for final acceptance 2007 Farnsworth Group, Inc. Benefits: Whats received from Cx? Design issues discovered/corrected early Reduced RFIs/COs through earlier coordination Interface between builders and operators Testing provides confidence in proper systems operability Timely delivery of As-builts, O&Ms, Training & Warranty items Rolling Issues Log minimizes A/E punch items Projects close-out better, with fewer callbacks 2007 Farnsworth Group, Inc. What does Commissioning Cost? Commissioned Systems Total Commissioning Cost HVAC and Control Systems 2.0 - 3.0% of mechanical Electrical Systems 1.0 2.0% of electrical HVAC, Control & Light Electrical 0.5 1.5% of construction Data available from Portland Energy Conservation Institute Cost Factors: - System Complexity - Systems to be Commissioned - Duration of Commissioning Engagement - Scope of Commissioning Tasks: o No LEED o LEED Fundamental o LEED Enhanced o Ongoing Commissioning 2007 Farnsworth Group, Inc. 4
  • 5. What does Commissioning $ave? Project State LEED Project Project Cx Savings % of Cx Cost Status Fee Natural Food WI Yes $2.1M Complete $85k-$604k 315% Store Warehouse IL Yes Confidential Complete Confidential 200% Science CO Yes $12M 15% Constr. $319k 189% Center Hospital CO Yes $52M 20% Constr. $425k 141% Vivarium NC No $28M 60% Constr. $500k 152% Science Bldg AL No $49M 50% Constr. $400k 105% Elementary IN No $11M 95% Constr. $60k 171% School Formally published data is available upon request 2007 Farnsworth Group, Inc. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. 5
  • 6. Commissioning Plan 2007 Farnsworth Group, Inc. Commissioning Plan 2007 Farnsworth Group, Inc. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. 6
  • 7. Owners Project Requirement Three (3) Common Methods: - Personal Interviews - Surveys - Workshop (Nominal Group Technique) o Individual Brainstorming o Oral Response (round robin) o Di Discussion/Clarification i /Cl ifi ti o Voting/Ranking 2007 Farnsworth Group, Inc. Owners Project Requirement 2007 Farnsworth Group, Inc. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. 7
  • 8. Basis of Design 2007 Farnsworth Group, Inc. Basis of Design 2007 Farnsworth Group, Inc. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. 8
  • 9. Design Reviews 2007 Farnsworth Group, Inc. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. Commissioning Checklists 2007 Farnsworth Group, Inc. 9
  • 10. Commissioning Checklists 2007 Farnsworth Group, Inc. Commissioning Checklists 2007 Farnsworth Group, Inc. Commissioning Checklists 2007 Farnsworth Group, Inc. 10
  • 11. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. Site Visit Sampling/Reviews 2007 Farnsworth Group, Inc. Site Visit Sampling/Reviews 2007 Farnsworth Group, Inc. 11
  • 12. Site Visit Sampling/Reviews 2007 Farnsworth Group, Inc. Site Visit Sampling/Reviews 2007 Farnsworth Group, Inc. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. 12
  • 13. Cx Functional Perf. Tests 2007 Farnsworth Group, Inc. Cx Functional Perf. Tests 2007 Farnsworth Group, Inc. Cx Functional Perf. Tests 2007 Farnsworth Group, Inc. 13
  • 14. Cx Tools/Techniques Commissioning Plan Document Owners Project Requirement Document Basis of Design Document Design Reviews Commissioning Checklists Site Visit Sampling/Reviews Functional Performance Testing Commissioning Issues Log 2007 Farnsworth Group, Inc. Logging Issues (via Database) 2007 Farnsworth Group, Inc. CxTracker 2007 Farnsworth Group, Inc. 14
  • 15. Logging Issues (via Database) 2007 Farnsworth Group, Inc. Logging Issues & Cost Estimating 2007 Farnsworth Group, Inc. Existing Bldg Cx (EBC) Overview EBC encompasses Re-Cx, Retro-Cx, and Ongoing Cx ASHRAE has established Energy Audit Levels I, II, III Energy Audit Savings Sources: No-Cost (12%) Low-Cost (29%) Capital Retrofit (59%) Most Common Savings Opportunities: Equipment Running Unnecessarily Badly Controlled Outside Air/Economizers Simultaneous Heating & Cooling Supply Air Temp/Static Pressure need Resetting Improperly Scheduled Lighting/Controls Oversized Equipment 2007 Farnsworth Group, Inc. 15
  • 16. Existing Bldg Cx (EBC) Overview Building Type Annual Implementation Simple Savings ($/sf) Costs ($/sf) Payback (yrs) Hospitals 0.43 0.47 1.1 Laboratories/Offices 1.26 0.37 0.3 Classroom/Offices 0.43 0 43 0.23 0 23 0.5 05 Offices 0.22 0.33 1.5 Schools 0.17 0.34 2.0 Data available from ASHRAE Journal, September 2007 2007 Farnsworth Group, Inc. LEED Overview LEED (Leadership in Energy and Environmental Design) is a Green Building Rating System developed by the US Green Building Council (USGBC) 100-pt system with 4 award levels (new for V3.0, 2009): - Platinum (80 or more of 100 total) - Gold (60 to 69 of 100 total) - Silver (50 to 59 of 100 total) - Certified (40 to 49 of 100 total) Five Focus Areas: - Sustainable Sites - Water Efficiency - Energy & Atmosphere (Fundamental Cx or Enhanced Cx) - Materials & Resources - Indoor Environmental Quality 2007 Farnsworth Group, Inc. LEED Overview Various Applications of LEED Rating System: New Construction Existing Buildings Core and Shell Commercial Interiors (CI) Schools Neighborhood Development (in pilot) Retail(in pilot) Healthcare (in pilot) 2007 Farnsworth Group, Inc. 16
  • 17. LEED Commissioning Tasks Owners Project Requirements (OPR) - Prereq. Prereq. Basis of Design (BoD) - Prereq. Prereq. Commissioning Plan (CxPlan) Prereq. Prereq. Design Reviews - Enhanced Submittal Reviews - Enhanced Commissioning Checklists - Prereq. Prereq. Site Visit Reviews - Prereq. Prereq. Cx Issues Logs - Prereq. Prereq. Cx Functional Performance Testing - Prereq. Prereq. Cx Training Programs - Prereq. Prereq. 2007 Farnsworth Group, Inc. Thank You; Questions? For More Information: Michael Skehan, Cx Section Manager New England mskehan@f-w.com; 617.444.8427 (o); 617.894.3885 (m) Don Forrest, Project Development Team dforrest@f-w.com; 309.689.9888 (o) @ ( ) Ian B.D. McIntosh, PhD, CCP imcintosh@f-w.com; 770.291.2252 (o); 678.223.8074 (m) 2007 Farnsworth Group, Inc. 17