Industry Standard Color Code

IEEE 519

This installation fails on both harmonic metrics. The THD of 4.5% exceeds the 3% maximum requirement, and the TDD of 6.2% exceeds the 5% maximum per IEEE 519. Excessive harmonics cause overheating of transformers, nuisance tripping of breakers, interference with sensitive equipment, and increased neutral current in three-phase systems. Corrective measures include installing harmonic filters (active or passive), using multi-pulse VFD configurations (12-pulse or 18-pulse), or adding line reactors. The VFDs may need to be replaced with units that have built-in harmonic mitigation.

IFC 5003.8.4 / OSHA 1910.106(d)(4)

This passes code requirements. IFC Section 5003.8.4 requires a minimum of 1 CFM per square foot of floor area for rooms handling hazardous materials, with the exhaust discharged directly outdoors. The installed system provides 2 CFM per square foot (2,000 CFM for 1,000 sq ft), which exceeds the minimum requirement. The system is correctly configured as 100% exhaust with no recirculation, as required for flammable liquid handling areas. Note that while this meets the minimum code requirement for general ventilation, a hazard assessment may determine that higher rates or local exhaust ventilation at the point of use is needed to keep vapor concentrations below 25% of the LEL, as required by NFPA 30.

IFC 5003.8.5 / NFPA 30 Section 6.4

Chemical storage areas must have gas detection systems that trigger emergency exhaust ventilation rates when vapor concentrations reach alarm thresholds (typically 10-25% of LEL or PEL). Without automatic emergency ventilation override, dangerous concentrations can build up during a spill before anyone manually activates increased exhaust.

ISO 14644-1

Clean rooms require HEPA (99.97% @ 0.3 micron) or ULPA filtration. Standard fiberglass filters are pre-filters only and cannot achieve the particle counts required for any clean room classification.

LEED v4 EAc1 — Enhanced Commissioning / ASHRAE Guideline 36

Enhanced LEED commissioning requires post-occupancy trend data collection to verify systems continue to operate as designed after the building is occupied. Without trend data, there is no evidence that control sequences are performing correctly under actual load conditions. A minimum of 10 months of seasonal performance data is required.

LEED v4 EAp1 / ASHRAE Guideline 0-2019

Enhanced LEED commissioning requires an independent commissioning authority (CxA) — not the installing contractor — to verify all systems meet design criteria. The CxA must review submittals, witness testing, and document that systems perform per the Owner's Project Requirements (OPR). Without independent verification, LEED commissioning credits cannot be claimed.