HET
OPERATIONS ENGINEER MANUAL: EXTERIOR
VISUAL INSPECTION (REV: 020903)
General
Description:
Perform
a visual inspection of the exterior of the facility. Look for system problems, loose or broken
parts, visitors and/or anything unusual.
(The following procedure follows a clockwise check around the HET.)
Initial
Conditions:
A) None.
1.0 Inspect the facility
grounds.
1.1 Look for parts on the ground
around the HET. Even a small screw,
washer, or nut may have significant meaning.
1.2 If a part is found, leave it
for the HET ME and send an email describing where the part was found.
2.0 Inspect the weather station
and tower.
2.1 Make sure the anemometer is
pointing into the wind.
3.0 Inspect the GTAG.
3.1 Verify GTAG lights and TV’s
are off (after
4.0 Inspect Air Handling Unit’s One and Two.
4.1 Look for any obvious leaks
or other problems. Be mindful if the
units are set to open or closed loop.
Open loop is drawing outside air into the dome via the supply fans while
closed loop is circulating air from the dome back through the return fans then
to the supply fans and then back into the dome.
Currently the air handling units are run in closed loop.
4.2 To check which loop is being
used, go to the air ducts on the side of the air handling units. The duct to the left with the large shroud is
the intake duct; the smaller duct to the right is the exhaust duct. If the air handling units are running closed
loop, there will be no air discharging out of the exhaust duct and no air movement
into the intake duct while the air handling units are in operation. Also, the return fan and supply fan can be
heard running.
4.3 To change from one loop to
another, first make sure the air handling units are off. Then unlatch the fasteners on the access
door, which is located on the same side of the air handling unit as the intake
duct but around the corner from the intake.
4.4 If closed loop operation is
desired the return louver between the exhaust and intake ducts should be open
and the exhaust/intake louvers should be shut.
When opening the return louver put the provided rock between two of the
return louver’s blades to insure the louver stays open.
4.5 If open loop operation is
desired then close the return louver and open the exhaust and intake louvers.
4.6 A modified version of
operating open loop is to either open or keep closed the dome vents, turn the return
fans off and shut the exhaust louvers.
5.0 Inspect the Glycol System.
5.1 Open the pump enclosure and
look for leaks.
5.2 Check the drive belt on the
pump for tightness and wear.
5.3 Check the pump’s oil level.
5.4 Check the level of the
glycol in the large tank. The glycol
level should be between two black marks that are positioned on the outside of
the tank.
5.5 Check for leaks around the
tank.
5.6 Check all exterior glycol
lines for leaks and wear.
5.7 Check the glycol cooler for
leaks. After turning the glycol system
on, check the cooler for operation.
6.0 Inspect the Emergency
Generator.
6.1 Visually check the exterior
of the unit for oil and/or fuel leaks, and any LED warning lights that might be
on.
7.0 Inspect the Chiller Plant
and Pumps for leaks and any other obvious problems.
8.0 Inspect the Heat Pump for
abnormal operation. The heat pump unit
supplies air conditioning and or heat to the HET control room and offices. The unit resembles a washing machine in shape
and is located adjacent to the glycol cooling fans. Also, in this area look for any water leaks
from water lines located in the ground below the heat pump unit.
9.0 Be mindful of any and all
visitors. Refer to Visitor Use Policy