Indoor Environmental Quality HVAC Assessment of Patapsco Middle School: May 19th, 2022 (HXXPMS2022000093)

Assessor
Jeffrey Klenk
Date
Outdoor Temperature
75°F
Relative Humidity
65%
Outdoor Dew Point
62°F

Air Handling Unit (Assess representative sample of RTU/AHU, including Portables)

Unit
Check OK Comments
Tag Number
Displayed
Yes
Status
Running
No
RTU-13 - Operation in question since supply fan was not operating, return fan making a noise, compressors running, but no condensate present from cooling coils, and outdoor air dampers were closed.
Outdoor Air Intake and Outdoor Air Dampers
Check OK Comments
Outdoor Pollution
Free from pollution sources w/i 25 ft. (e.g. dumpster, chimney, etc.)
Yes
Louvers and Access Doors
Operating properly
No
RTU-14 - Outdoor air dampers were closed.
Deflectors & Screens
Present
Yes
No debris
Yes
Dampers
Outside air damper: no obstructions
Yes
Return air damper: no obstructions
Yes
Mixing Plenum
Check OK Comments
Clean
No excess dirt, not used for storage
Yes
Insulation
Secure and Clean
Yes
P-Trap (if present)
Charged with liquid
Yes
Filters and Coils
Check OK Comments
Filters
Free of any bypassing
No
RTU-5 - The panel within the unit to access filters was not properly closed (a wedged rusted screw keeps the panel from closing tight).
Correct size
Yes
Free from excessive loading, dampness or odor
Yes
Not collapsed/not fallen off
No
The box filters (pre-filters present in front of box filters) in RTU-11 were not properly sized, thus boxes are in a slanted position when unit this is in operation. A pair/set of air filters were out of place within a bank of air filters in RTU-12. A looped pin to hold filters in place was behind the these filters thus not allowing them to properly set in the housing.
Present (not missing)
Yes
Date and initials written
Yes
Heating Coils
Clean, no noticeable leaks, or obstructions
Yes
Cooling Coils
Clean, no noticeable leaks, or obstructions
No
RTU-4, 5, and 11 - Coils had areas of accumulated particulate.
Access: Free of any obstructions in area that may affect access
Yes
Condensation: No excess condensation problems
No
Some RTUs were producing condensate while others (some same type of unit) were not. RTUs in question for no visible condensate were 4, 5, 10, 12, and 14.
Blowoff: Free of water from coil blowoff
Yes
Condensate Pan and Drain Line
No visible bacterial or fungal growth
Yes
Clean, no residue, no standing water
No
Question as to if condensate is stagnant and white film forming (could be bubbles) in an isolated area. Not safe for the inspector to get a closer look at the time of the finding.
No Overflow, leakage, blockage, or damage
Yes
Proper slope, drain line ok, drainage acceptable, discharge okay
Yes
Fans and Motors
Check OK Comments
Condition
Operational
Yes
No unusual odors, noise, or vibration
Yes
Central Plant
Check OK Comments
Heating Central Plant
Boiler operational
Yes
Misc. Comments
Safety hazard (struck by) for individuals working around filter access door. Extended metal (flange/sharp corners) from the bottoms of the outdoor air intake hoods is in close proximity, thus an individual's face /head could come in contact and cause an injury.
Work Order Number(s)
236263, 236266
Issues found durring this assessment have been assigned to the above work order(s).