HVAC
WHAT COOLING EQUIPMENT DO WE USE TO COOL THE DATA HALL? If you don't know the model, then the acronym can suffice
CRAC DSE 265
XDM-300
CDU-1350
WHAT TYPE OF FUEL DO WE USE FOR OUR GENERATORS?
RED DYED DIESEL (OFF ROAD DIESEL)
WHAT ARE THE 2 CONDITIONS THAT MUST BE MET TO ACTIVATE THE PRE-ACTION SYSTEM?
CROSS DETECTION (2 SMOKE HEADS IN A SINGLE ZONE) AND LOSS OF AIR PRESSURE
WHAT IS YOUR ELECTRICAL PPE
EYE PROTECTION/FACE SHIELD
RATED GLOVES
SAFETY SHOES
ARC FLASH SUIT
WHAT IS DIGITAL REALTY'S CORE VALUES?
CUSTOMERS, EXCELLENCE, TALENT, TEAMWORK AND SUCCESS.
HOW MANY HUMIDIFIERS ARE IN EACH CRAC GALLERY, HOW MANY PER SUITE?
2 PER CRAC GALLERY, 4 PER SUITE
WHEN IS THE OZONE SEASON, AND WITHIN WHAT TIME FRAME CAN WE NOT DO NON-EMERGENCY RUNS?
MAY 1ST - SEPTEMBER 30TH
NO NONEMERGENCY RUNS FROM 7AM - 5PM
WHAT TYPE OF ATS (AUTOMATIC TRANSFER SWITCH) DO WE HAVE FOR OUR PRE-ACTION CABINETS?
BODINE
WHAT IS A CLOSED TRANSITION?
WHAT IS: "MAKE-BEFORE-BREAK" (NEVER LOSE POWER)
THE CONTACTS FOR THE ALTERNATE SOURCE ARE CLOSED BEFORE THE CONTACTS OF THE ORIGINAL SOURCE ARE OPENED.
WHAT SOFTWARES DO WE USE FOR MAINTENANCE TRACKING, AND WHAT ARE THE FORMS/DOCS WE USE FOR EACH?
INSITE AND MCIM. INCIDENT REPORT (IR) OR CHANGE REQUEST (MOP ACCEPTABLE)
WHAT IS REFRIGERANT AND WHAT TYPE DO WE USE?
A CHEMICAL COMPOUND THAT ABSORBS HEAT THROUGH AIR AND IS CAPABLE OF TRANSITIONING FROM LIQUID TO VAPOR AND BACK AGAIN.
R410A
HOW MANY HOURS OF FUEL CAPACITY SHOULD OUR FUEL TANKS HAVE TO KEEP THE GENERATOR OPERATIONAL AT 100% LOAD.
ATLEAST 24 HOURS OF FUEL CAPACITY AT 100% LOAD
WHAT ARE THE MAJOR COMPONENTS OF A PRE-ACTION?
Flapper/Deluge valve
Water Supply
Dry pipe
Priming Pressure Line
Priming Pressure Gauge
Water Supply Pressure Gauge
Release Valve
WHAT TYPES OF LOADS ARE FED FROM THE MECHANICAL PANELS?
CRACS (COMPUTER ROOM AIR CONDITIONING)
ACCUS (AIR COOLED CONDENSING UNIT)
WHEN DO WE NEED TO CALL THE BUILDING OUT FOR ALL SIGNALS AND WHO DO WE CALL?
HOT WORK, HIGH RISK WORK, FIRE SYSTEM TESTING (ANY OF THE 3)
WE CALL (BFPE) BALTIMORE FIRE PROTECTION AND EQUIPMENT
WHAT IS THE 4 STAGES OF THE REFRIGERATION CYCLE.
COMPRESSOR - INCREASES PRESSURE. (HIGH PRESSURE, HIGH TEMP VAPOR)
CONDENSER (SUB COOLING) - REJECTS HEAT.
EXPANSION VALVE (EEV) - REMOVES PRESSURE. (LOW PRESSURE, LOW TEMP, VAPOR LIQUID MIX)
EVAPORATOR - ABSORBS HEAT. (LOW PRESSURE, HIGH TEMP, VAPOR)
DURING GEN ROUNDS, THERE ARE 5 TYPES OF LEAKS YOU SHOULD CHECK FOR. WHAT ARE THEY?
FUEL LEAKS
OIL LEAKS
DEF LEAKS
COOLANT LEAKS
AIR LEAKS
WHAT ARE THE 3 PRESSURE GAUGES ON EACH OF OUR PRE-ACTION SYSTEMS AND WHAT ARE THEIR PSI RANGES?
SYSTEM AIR PRESSURE GAUGE (15-60 PSI)
PRIMING PRESSURE GAUGE (90-150 PSI)
WATER SUPPLY PRESSURE GAUGE (90-150 PSI)
WHAT IS AN AUTOMATIC TRANSFER SWITCH (ATS).
AN ELECTRICAL SWITCH THAT SWITCHES THE LOAD BETWEEN TWO SOURCES. (MAIN UTILITY AND GEN BACKUP)
DETECTS WHEN THERE IS A POWER FAILURE IN THE MAIN UTILITY AND TRANSFERS THE LOAD TO BACKUP UTILITY (GEN).
SWITCHES THE LOAD BACK TO MAIN UTILITY ONCE THE MAIN UTILITY IS RESTORED.
WHAT ARE THE EVENT ESCALATION TYPES AND COURSE OF ACTION FOR EACH?
GREEN - INCIDENT REPORT (IR) AND CHANGE REQUEST (CR)
YELLOW - MANAGER ENGINEERING OPERATIONS (MEO)/MANAGER ON DUTY (MOD), GLOBAL COMMAND CENTER (GCC)
RED - SAME AS YELLOW
IF THE TOTAL IT LOAD IS 3500 KW, HOW MANY CRACS WOULD BE NEEDED TO SUPPLY ENOUGH COOLING TO THE SUITE?
3500/265 = 13.20 ROUNDING UP TO 14 CRACS BEING NEEDED FOR THE SUITE.
DESCRIBE THE 4 STROKE DIESEL ENGINE COMPONENTS THAT CAUSE THE ENGINE TO RUN.
INTAKE, COMPRESSION, COMBUSTION, EXHAUST
WHAT ARE THE FIRST 2 SECTIONS OF PIPING WHEN YOU ENTER THE WATER ENTRY ROOM CALLED?
BACK FLOW PREVENTER AND FIRE DEPARTMENT CONNECTIONS
EXPLAIN WHAT DISTRIBUTED REDUNDANCY IS IN A 5 TO MAKE 4 SYSTEM, FOR A 8MW SUITE.
5 ELECTRICAL ROOMS (2MW/2000KW MAX CAPACITY) WITH 2 UPS PER ROOM (1MW/1000KW EACH UPS) ARE INSTALLED TO DELIVER THE CAPACITY OF 4 ELECTRICAL ROOMS.
IN A 5 TO MAKE 4 SYSTEM ALL 5 ELECTRICAL ROOMS ARE SET TO ONLY USE 75% (1.6MW/1600KW) LOAD OF CAPACITY IN CASE 1 ELECTRICAL ROOM FAILS. IF 1 ELECTRICAL ROOM FAILS THE REMAINING 4 ELECTRICAL ROOMS WILL BE DISTRIBUTED 25% OF THE LOAD EACH, FROM THE FAILED ELECTRICAL ROOM. TAKING THE REMAINING 4 ELECTRICAL ROOMS TO THEIR MAX CAPACITY (2MW/2000KW).
WHAT ARE THE BADGE COLORS AND WHO ARE THEY DESIGNATED FOR
YELLOW - CUSTOMERS
BLUE - EMPLOYEES / VENDORS
GREEN - VISTOR (DAILY/EXTENDED)
RED - ESCORTED