Data Center Commissioning: What you need to know
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Transcript of Data Center Commissioning: What you need to know
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Data Center Commissioning:
What you need to know
Course # CXENERGY1511
AIA Provider # 50111116
AABC Commissioning GroupCxEnergy ConferenceHenderson, NVApril 30, 2015
Presented by: Judson H. Adams, P.E., CxA, ATDPower Management Corporation
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AIA Stuff:
Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.
This course is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner ofhandling, using, distributing, or dealing in any material or product.
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Course Description
Data centers have become a critically important
facility type in our modern economy. Because of
their unique requirements, commissioning them
properly requires some specific knowledge and
skills. This practical session will discuss uptime tier
classifications, working in live data centers,
balancing reliability vs efficiency, and much
more.
Also featured will be a review of example data-
center-specific functional performance and
integrated system tests.
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Learning Objectives:
At the end of this course, participants will ….
1. Be familiar with the Uptime Institute® Tier
classifications
2. Understand the 5 levels of data center Cx
3. Be able to differentiate Integrated Systems
Testing from Functional Performance Testing
4. Understand challenges associated with Cx in a
live data center
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Data Center
A facility used to house computer systems and associated components, such as telecommunications and storage systems. It generally includes redundant or backup power supplies, redundant data communications connections, environmental controls (e.g., air conditioning, fire suppression) and various security devices.-
-Wikipedia 2015
Internet
Enterprise
Telecommunications
Colocation (wholesale and retail)
Server/computer room
Telecom closets
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Critical Infrastructure
Physical systems designed and constructed specifically
to support the hardware, network, and applications
that make up the “data center” :
Electrical Power
Mechanical Cooling
Fire Suppression
Automation
Monitoring
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Critical Infrastructure Building Automation System
Chillers
Cooling Towers
Pumps/VFDs/Loop
Outside Air Units
Economizers
CRAHs/CRACs/IRCs
Makeup water and Pressure reducer valves
Electrical Substations
Generators and Fuel Delivery Systems
Transfer gear/ATS
Distribution Switchboards/Switchgear
UPS systems
Power Distribution Modules
Remote Power Panels
Critical Distribution Busway
EPO
Power and Environmental Monitoring Systems
Liquid Detection Systems
Lighting Control Systems
Fire Alarm and Detection Systems
Preaction Sprinkler Systems
Gaseous Fire Suppression Systems
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Capacity Component
Capacity Component is any power producing and
energy storage equipment, such as:
Electrical power generator
UPS and Battery system
Chiller
Cooling Tower
Chilled water pump
CRAC/CRAH units
Fuel storage
Water Storage
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Distribution path
A distribution path is the means by which the power is
transferred from the capacity component to the load,
such as:
Transformers
Electrical feeders
ATS, Switchgear, PDUs
Hydronic piping
Refrigerant piping
Valves
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ITEQ Load
The load (expressed in Kilo-Watts) of the users
Information Technology Equipment. What’s in “The
Rack.”
Telecommunications provider equipment
Firewalls
Routers
Network switches
Servers
Storage arrays (SANs)
And others…..
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Uptime Institute®
Tier Classification System
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Uptime Institute®
Tier Classification System
An International Standard developed by The UTI that
defines criteria for the critical infrastructure design
based on four levels of classification:
Tier I – Basic Capacity
Tier II – Redundant Capacity Components
Tier III – Concurrently Maintainable
Tier IV – Fault Tolerant/Continuous Cooling
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Uptime Institute®
Tier Classification System
Tier levels are defined at a specific ITEQ load using
ASHRAE Handbook Extreme outdoor design conditions
for the specific location (n=20 years)
Nashville, TN
Typical Cooling Design (0.4%) = 94.4 DB
Extreme (20 year high) = 103.1 DB
Las Vegas, NV
Typical Cooling Design (0.4%) = 108.3 DB
Extreme (20 year high) = 116.1 DB
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Uptime Institute® - Tier I
Tier I – Basic Capacity
Self sustaining for 12 hours - Does not rely on utilities
Number and size of capacity components is
sufficient to maintain the operation of the business
between maintenance intervals
Maintenance requires shutting down the data
center
Subject to planned and un-planned outages
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Uptime Institute® - Tier I
12 hour Water Storage N Generator(s)
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Uptime Institute® - Tier I
N Chiller(s) N AC Unit(s)
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Uptime Institute® - Tier I
Electrical Oneline
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– From UTI white paper: Tier Classifications Define Site Infrastructure Performance –
Note: Example only, not prescriptive
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Uptime Institute® - Tier II
Tier II – Redundant Capacity Components
Tier I, plus:
Number of capacity components provides
redundancy (N+1) for:
unexpected failure
maintenance without system shutdown
Maintenance of pathways requires shutdown
Subject to planned and un-planned outages
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Uptime Institute® - Tier II
N+1 UPS N+1 Generators
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Uptime Institute® - Tier II
N+1 Chillers N+1 Cooling Towers
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Uptime Institute® - Tier II
Electrical Oneline
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– From UTI white paper: Tier Classifications Define Site Infrastructure Performance
– Note: Example only, not prescriptive
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Uptime Institute® - Tier III
Tier III – Concurrently Maintainable
Tier II, plus:
Multiple distribution pathways for power and
cooling (one may be passive)
All IT equipment has redundant power supplies
Generator must be rated for continuous operation
Each and Every single component and distribution
pathway can be removed for service/replaced
without shutting down the data center
Maintenance requires shudown
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Uptime Institute® - Tier III
Double Isolation Valves
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Uptime Institute® - Tier IIIRedundant Pathways
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Uptime Institute® - Tier IIIRedundant Pathways
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Uptime Institute® - Tier III
Main-Tie-Tie-Main
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Uptime Institute® - Tier III
Electrical Oneline
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– From UTI white paper: Tier Classifications Define Site Infrastructure Performance – Note:
Example only, not prescriptive
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Uptime Institute® - Tier IV
Tier IV – Fault Tolerant
Tier III, plus:
Multiple distribution paths - both active
Compartmentalization between redundant
components/pathways
Class-A Continuous Cooling is required
Failures are self healing
Unexpected failure of any single component will
not interrupt the operation of the data center
The site is not subject to outages from a planned
event, or a single unplanned event
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Uptime Institute® - Tier IV
Continuous Cooling during loss of utility
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Uptime Institute® - Tier IV
Compartmentalization
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Uptime Institute® - Tier IV
Electrical Oneline
– From UTI white paper: Tier Classifications Define Site Infrastructure
Performance – Note: Example only, not prescriptive
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Uptime Institute®
Tier Availability Matrix
* Based on recommended practice** Historical data from Uptime Institute membersSource: Data Center Site Infrastructure Tier Standard: Topology © 2012 - Uptime Institute, LLC
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Tier I Tier II Tier III Tier IV
Planned Shutdowns for
maintenance*
2 every
year
3 every 2
years
Not
required
Not
Required
Unplanned Equipment or
Distribution Failures **
1.2 per
year
1 per year 1 every
2.5 years
1 every 5
years
Annual hours of
downtime**
28.8 22 1.6 0.8
Availability 99.67% 99.75% 99.98% 99.99%
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Data Center Commissioning
aka
”Level 5 Commissioning”
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“Level 5 Commissioning”
Level 0: Design Review
Level 1: Planning
Level 2: Factory Acceptance Testing
Level 3: Pre-Functional Inspections/Startup
Level 4: Functional Testing
Level 5: Integrated Systems Testing
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Level 0: Design Review
CxA will assist with defining the OPR:
What is your target ITEQ Load?
What are your Resiliency Goals (Tier Level)?
Phasing?
How will the site be tested?
Make sure testing requirements are in the specifications
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Photo source: www.zeniumdatacenters.com/the-risk-of-short-term-data-center-planning/
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Level 0: Design Review
Review the Basis of Design:
Compare to OPR
Sequence of operations
Piping flow diagram
Electrical oneline diagram
Back-check at CDs
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Level 0: Design ReviewA few pointers regarding controls:
Keep sequences simple
Fewer control points means fewer failures
Consider resiliency vs. efficiency
The fallacy of “UPS backup”
All capacity components should self sustainable
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Level 1: Planning
Begins in design
phase
Prepare outline of
testing scripts
Test for
maintenance
modes (Tier III)
Test for failure
modes (Tier IV)
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Level 1: Planning
Load bank placement for heat run test?
How will the different failure modes be tested?
How does the testing plan integrate with construction schedule?
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Level 1: Planning
Existing Data Center Modifications:
Identify Critical MOPS (Methods of Procedure)
Is the sequence of construction integrated with Cx activities?
What is the user’s tolerance for risk?
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Level 2: Factory Acceptance
Generators
Paralleling Gear
UPS Systems
Static Switches
Chillers
Custom HVAC equipment
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Level 2: Factory Acceptance
Full sequence demonstrated
Safeties and alarms
Heat Run at full load
Transients recorded
Chillers:
Quick Start Low load
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Level 2: Factory Acceptance
Why?
Testing performed by factory technicians
Deficiencies identified and corrected prior to shipment
Test Drive: Owner becomes familiar with system before owning it
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Level 3: Pre-FunctionalOverall readiness for FPTs
Equipment matches submittals
Installation per construction drawings
SVCs complete
Manufacturer startup complete
Electrical Acceptance Testing
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Photo source: http://www.tequipment.net/
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Level 4: Functional Testing
Cooling Equipment:
Controls interface
Alarm notification Team-work mode
Heat Run for containment systems
Failure modes
Run Enable Failsafe Loss of Comm Power restore
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Level 4:
Functional Performance Test
Example: Chiller Plant – Add/Drop Chiller
New DC3 Expansion (1,800 kW total ITEQ)
Added a 5th chiller to existing plant of 4
Replaced all primary CHW pumps (2N)
Installed active secondary CHW loop (Tier III)
Live Data Center
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Level 4: Functional Testing
Generator/Transfer Equipment:
Test individual generators
Transients, load steps
Alarm notification
Thermal Imaging
Test parallel gear/ATS
Full Heat Run at rated load – Entire plant
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Level 4: Functional Testing
UPS and STS Equipment:
Test individual modules
Inverter/Bypass Maint Bypass Battery discharge Alarm notification Thermal Imaging
Test parallel gear
Full Heat Run at rated load –Entire plant
Interaction with Generator(s)
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Level 4: Functional Testing
Emergency Power Off (EPO):
Document how to restore
Confirm control power source
Avoid normally closed circuits
for UPS/PDU equipment
Interface with smoke dampers
Is there a way to bypass for
maintenance?
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Level 5:
Integrated Systems Testing
Integrated System Testing is a
comprehensive test protocol that
incorporates all electrical power, cooling,
and control functions under design load
IST is typically performed over multiple
days
IST requires participation from all
contractors, vendors, the owner’s agent,
and the CxA
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Level 5:
Integrated Systems Testing
The “Prove it” Phase:
Heat Run: Demonstrate ability for the IT
equipment rooms to carry design load
under steady state design conditions
Low Load Conditions: Demonstrate
ability of the infrastructure to carry “Day
One” loads at steady state design
conditions
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Level 5:
Integrated Systems Testing
The “Prove it” Phase:
Loss of Utilities: Demonstrate the ability to
automatically react to utility outages (this
is NOT a failure – Tier I)
Maintenance: At load, demonstrate the
ability to remove capacity components
(Tier II) and pathways (Tier III) from service
without interruption
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Level 5:
Integrated Systems Testing
Perform maintenance procedures:
Remove a generator/UPS from the bus
Power down and isolate one electrical
switchboard/UPS/PDU completely
Shut off one Distribution panel serving
multiple CRAC units
Isolate a chiller /pump
Simulate a valve replacement
Simulate a complete BAS controls outage
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Level 5:
Integrated Systems Testing
The “Prove it” Phase:
Equipment Failure: Demonstrate the ability to automatically react to unplanned equipment failures (Tier II)
Pathway Failure: Demonstrate the ability to automatically react to unplanned pathway failures (Tier IV)
Example: Fire in a chiller room or electrical room – Assume total loss of room
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Level 5:
Integrated Systems Testing
Example: Pull the Plug – Low Load
3 Diesel Generators in parallel
Dual bus UPS system (A /B)
Dual Static Transfer Switches (A/B)
Air cooled Chillers (N+1)
Variable Primary pumping
Computer Room Air Handlers (CRAH)
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Level 5:
Integrated Systems Testing
Example: Heat Run and BAS failure
New DC3 Expansion (1,800 kW total ITEQ)
Five air-cooled chillers in parallel
Four primary CHW pumps (2N)
DP control (five sensors – fail safe)
Computer Room Air Handlers (CRAH)
Live Data Center – Tier III Design
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Commissioning
within a “live” data center
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Commissioning within a live
data centerNew Equipment Commissioning
Outage/failures during the testing process impact the business
Full load Systems Integration Testing is sometimes not feasible without scheduled downtime (Tier I and Tier II)
Medium risks
Full Facility Retro-Commissioning
It’s was never really commissioned before
Usually using “live load” for the test load
High Risks – Especially Tier I and Tier II Facilities
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Commissioning within a live
data center
The CxA in a mission critical project will often be expected to prepare MOPs (Methods of Procedure) for all critical steps in construction and testing
The CxA is typically best suited for this role, as he/she has the best understanding of the overall risks related to the procedure
Critical MOPS must be identified early in the design process
Team effort – Must have sign off by owner, engineers, and contractors
Perform a Dry Run in advance
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70Example MOP
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71Example MOP LOG
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Questions and Discussion
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