TAH

Question 1

State auto open for TAH louvers and dampers

Answer 1

at 88F louvers and dampers open for natural cirulation

Question 2

State auto start for TAH roof fans

Answer 2

at 95F roof fans start if its damper and louver is full open

Question 3

State how TAH responds to fire conditions

Answer 3

In case of a fire, if TB zone temperature >145°F (HB >115°F), the associated louver and roof damper auto-opens and the power roof ventilator auto-starts for heat/smoke removal.

Question 4

State how TAH responds to cold outside temperatures

Answer 4

If outside air temperature <35°F, TB/HB louvers & dampers auto-close (which automatically trips the power roof ventilators),

Question 5

Discuss how the Lube Oil storage building ventilation works

Answer 5

An outside supply fan (1000 scfm) provides ventilation and prevents the accumulation of explosive gases.
A heating coil within the supply duct maintains temperature >55°F.
Air is exhausted through fire dampers, which have 165ºF fusible links.

Question 6

State how Lube Oil Storage Building heating is prevented from freezing

Answer 6

On low system demand there is a bypass orifice which keeps the piping warm