2022 Fall TAB Journal Quiz

Step 1 of 16

Name(Required)

First Last

Email(Required)

Company Name(Required)

Are you an AABC, ACG, or EMA member? (check all that apply)(Required)

AABC

ACG

EMA

None of the above

Dirt & Airflow Sensors

Allison Thibodeau, TBS, Scan Air Balance 1998, Ltd.

1. Why did the TAB agent log into the building management system at the beginning of the project?(Required)

To shut it down

To set the terminal units to maximum

To set the terminal units to minimum

Schedule fluctuations of the flow/temperature to measure the scope of the system

Dirt & Airflow Sensors

Allison Thibodeau, TBS, Scan Air Balance 1998, Ltd.

2. What was the cause of the airflow being greater than the required maximum?(Required)

Shafts slipping on the terminal unit motors

Damaged tubing connecting the terminal unit and crossflow grid

Measure airflow at diffusers with a flow hood

A mass airflow type of sensor was used to measure the pressure drop across the flow grid

Dirt & Airflow Sensors

Allison Thibodeau, TBS, Scan Air Balance 1998, Ltd.

3. What remedy was used?(Required)

Create excess ventilation to drop the pressure in the system

Replace terminal unit controllers

Reduce system power

Rebalance system from scratch

TAB of Small Tonnage Rooftop Units Under 25 Tons

Ronald Ballard, American Testing, Inc.

4. What speed do manufacturers typically operate fans at, on calls for heat and cooling?(Required)

10%

20%

50%

100%

TAB of Small Tonnage Rooftop Units Under 25 Tons

Ronald Ballard, American Testing, Inc.

5. What must be adjusted in a belt drive configuration utilizing VFDs to achieve design CFM?(Required)

Adjust maximum hertz on VFDs

Replace Sheaves

Replace the belt with a tighter one

Decrease fan speed

TAB of Small Tonnage Rooftop Units Under 25 Tons

Ronald Ballard, American Testing, Inc.

6. On Carrier RTUs, where is the VFD located?(Required)

Blower Section

Air Output

Adjacent to the plenum

On top of the unit

Professional Sports Stadium Balancing – An Adventure in Project Management

Gerald J. Kettler, PE, TBE, CxA, EMP, LEED AP, AIR Engineering and Testing, Inc.

7. Due to the location of the central plant on the lower level with cooling towers on the 7th floor roof, additional problems included...(Required)

Pumping and pressure

Heating and cooling

Noise and ventilation

Odor

Professional Sports Stadium Balancing – An Adventure in Project Management

Gerald J. Kettler, PE, TBE, CxA, EMP, LEED AP, AIR Engineering and Testing, Inc.

8. How many fans did the smoke control systems include?(Required)

115

Professional Sports Stadium Balancing – An Adventure in Project Management

Gerald J. Kettler, PE, TBE, CxA, EMP, LEED AP, AIR Engineering and Testing, Inc.

9. What part of design and construction made access and communication difficult?(Required)

Some elements were being designed as they were installed

The controls contractor was located in a different time zone

The controls programmer went on medical leave

There was a competing project on the schedule

Air Filtration: HEPA vs ULPA vs MERV-13

Eddie Alejandre, PE, TBE, Los Angeles Air Balance Co., Inc.

10. What was previously a common minimum acceptable rating for MERV filters, according to the author?(Required)

Air Filtration: HEPA vs ULPA vs MERV-13

Eddie Alejandre, PE, TBE, Los Angeles Air Balance Co., Inc.

11. What is the furthest large respiratory droplets can travel between leaving the body and hitting the ground?(Required)

7 in.

3 ft.

6 ft.

12 ft.

Air Filtration: HEPA vs ULPA vs MERV-13

Eddie Alejandre, PE, TBE, Los Angeles Air Balance Co., Inc.

12. Why aren’t HEPA filters used in every system?(Required)

They’re not cost-effective

They do not provide 100% filtration of COVID

They give off a distracting odor

They are too large for some existing filter frames

A Case Study of ECM Motors in a United States Pharmacopeia 800 Pharmacy

Tim Mahoney, TBE, Mechanical Test and Balance Corporation

13. What kind of filter was used in the pharmacies mentioned in this article?(Required)

HEPA

MERV

ULPA

UCLA

A Case Study of ECM Motors in a United States Pharmacopeia 800 Pharmacy

Tim Mahoney, TBE, Mechanical Test and Balance Corporation

14. What was compensating for the minor fluctuations in pressure changes in the ante room and IV prep room?(Required)

Slight elevations in the rooms compared to the AHU

Automated correction system in the AHU

Low wall return

An open window in the IV prep room

Trust Your Equipment: Balancing a Manufacturing Plant

James C. Fincher, TBE, Palmetto Air and Water Balance, Inc.

15. What condition that occurred during shutdown did the TAB agency notify the engineer and owner of once they realized it?(Required)

The system was under higher than normal minimum load

The system was under lower than normal minimum load

The plenum was not of the same type as stated in the building plans

The BAS was programmed to only increase the fan speed, not decrease at any point