Qual, Fire Life Safety

Question 1

Describe the standard pre-action system as it exists on campus to include:

Answer 1

Describe the standard pre-action system as it exists on campus to include:

Power Supplies – Dual fed. ATS (fed off the G pnl)

Water Flow Path – Water entry room (L151), PBB pipes, pre-action, suites

Valve Isolation Points – Water entry room and pre-actions

Alarming Set Points – Tamper, high/low pressure alarm (10 psi), Blast Off

Types of Fires and Proper Extinguishing Agents

A: General combustions (Ash)

B: Liquids (Boils)

C: Electrical (Charge)

D: Metals (Drill)

K: Kitchen/Grease (Kitchen)

Maintenace Scope of Work

Simulate air loss, check switches, and close isolation valves

Maintenance Periodicity

Quarterly: Test tampers and bring in low supervisory

Annually: Cycle deluge valve, alongside quarterly testing

Question 2

What is the difference between cross zone and cross detection?

Answer 2

Cross Zone (underfloor): HSO Activation. Prevents false alarms. Smoke in different zones needed.

Cross Detection (ceiling): Requires 2 with same zone and pressure loss (2 factor authentication) dual interlock.

Question 3

Describe the underfloor smoke detection disabling procedure. How does this differ between properties?

Answer 3

Call BFPE (T/S), disarm HSO by turning key, acknowledge the supervisory alarm.

Different buildings have different building codes and some don’t have HSO’s.

Question 4

Where is the Life Safety Building Account and Passcode spreadsheet published?

Answer 4

I: Drive – Fire Folder

Question 5

Describe the Fire System response to 2 underfloor cross zoned smoke detectors.

Answer 5

HSO relay is activated (shut trip) and breakers in electric room will all trip, CRAC’s will all shut down/off HVAC s/d override goes off.

Question 6

What indications would be available to the roving Facility Engineer with one ceiling smoke head activated within a suite?

Answer 6

BMS alarm, light on panel will light up for location of ceiling smoke head, alarm on fire panel in suite, alarm will sound off.

Question 7

What should be observed prior to placing a Suite HSO inhibit key switch from inhibit to enable?

Answer 7

All work is complete, no alarm indications, all is normal

Question 8

Explain how the Very Early Smoke Detection Apparatus works and where on campus is this located?

Answer 8

M Building

VESDA: Sucks in air from the protected environment via purpose built aspirating pipe and fitting also samples the quantity of air passing through the VESDA detection laser chamber.

Question 9

Explain the differences between Trouble/Supervisory/Alarms.

Answer 9

Trouble: system/component issue

Supervisory: Change of state in system

Alarm: Sensor triggered