12121 Grant Street Technical information |
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Primary Power | 7Mega Watts available | |||
can add 20 Mega Watts independent substation in 12-24 months | ||||
3 x 2000 KVA Transformers | 1 x 1000 KVA Transformer | |||
Power Backup | 1250 KVA | 3 x 625 KVA modules (1 is redundant) | ||
Cooling towers | 4 x 500 ton towers | |||
fire detection | office areas only | Johnson controls | ||
Raised floor | 18" High | |||
Annual Site Caused IT Downtime (actual) | 22 hours | 1.6 hours | ||
Staffing | 1 shift | 1+ Shifts | ||
Usable Critical Load | 100% | 90% N | ||
Tier specifications | Building is currently a TIER II and can be configured for TIER III |
PRIMARY ELECTRICAL AND BACKUP POWER SYSTEM
The facility is powered from a single feeder provided by Xcel Energy.
The primary power service is three - 2000 KVA transformers and one -
1000 KVA transformer. There are four - 1200 KW, 2000 HP Detroit Diesel
generators and one - 1200 KW, 1636 HP Caterpillar diesel engine. Each
engine has a 250-gal day tank and there are two - 15,000 gallon buried
diesel fuel tanks.
UNINTERRUPTIBLE POWER SYSTEMS
UPS There are three - 1250 KVA Teledyne UPS systems, each system
has two - 625 KVA modules plus one - 625 redundant module (3 modules
in each system). The Teledyne UPS systems are vintage 1989/1990. Three
systems are rated 1250 KVA each and they have been well maintained over
the years, however the manufacturer (Teledyne) is no longer in business.
Each UPS feeds a 1600 A, 480 V computer switchboard. The three computer
switchboards have bus ties between them for back feeding in the event
of a UPS problem. They feed distribution panel boards on the upper floors,
motor control centers, and the other critical loads. UPS system one
feeds floors 2, 3, 4, 5 & 6; UPS system two feeds floors 6, 7 (currently
shut down), and UPS system three feeds floors 2,3,4,5. Floor 7 has one
riser and was designated as the disaster recovery floor. One string
of 92 wet cell DC batteries serves each module. The batteries are YUASA-EXIDE
2DZ-19B batteries; presently 552 total batteries exist.
MECHANICAL HVAC SYSTEMS There are 4 - 500 ton cooling towers supporting 3 - 500 ton Trane centrifugal chillers: 2 - 250 ton heat pump chillers for 2 - 500 ton units used for free cooling. Four chilled water auxiliary storage tanks holding 6 - 510 gallons each are also on site. The total available cooling capacity is 77 - 15.5 ton Liebert CRAC units distributed on 6 floors and an auxiliary cold water loop on the third floor is available for chilled water mainframe computers. Humidification in the data centers is provided by a Stulz ultrasonic system; each unit provides 15.8 lbs/hr distributed from four Liebert brand systems on each floor. The office areas feature an above ceiling variable air volume (VAV) HVAC system. The office heating system is provided by 2 - 250 ton Trane centrifugal heat pumps and one electric hot water boiler system.
FIRE DETECTION, FIRE PROTECTION AND BUILDING AUTOMATION
The fire detection system is a MXL Pyrotronics system. None of the
data centers are protected with either a dry or wet sprinkler system.
Only the office space and corridors utilize a wet sprinkler system.
The building automation system is a Johnson Controls metasystem.
RAISED FLOOR
The 18” high raised floor system features a concrete core filled
panel in the high traffic areas. Hallow core panels are used everywhere
else. Steel stanchions support both the concrete and hallow core panels.
DRAWINGS
Current up to date line drawing’s are available for the main
essential power distribution system, the non-essential power, and for
the 15 KV switchgear.
FIBER CONNECTIVITY
Dual fiber to the building is provided by Qwest Communications.
A single mode 48 strand fiber backbone is serviced from Qwest’s Northglenn
central office and a single mode 24 strand is provided from their Broomfield
central office.
SECURITY
A CCTV system is in the building providing coverage.
CONSTRUCTION
The exterior of the building is precast concrete. The column spacing
is 30’x 35’ feet centerline to centerline in the data center and office
areas. The center bay column spacing is 20’x 30’. The interior structural
system is steel columns, beams and purloins. The structural steel deck
is 3” deep and filled with lightweight concrete. A single elevator core
features four 3500 lbs Dover passenger elevators and a single class
A 6500 lbs freight elevator. A centrally located rest room core is in
the lobby of each floor.