Remediation & Mitigation Strategies Flashcards
7 cards from real EMP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Remediation & Mitigation Strategies flashcards as text
Which mitigation measure is most effective for reducing peak electrical demand caused by simultaneous HVAC equipment startup after an overnight setback?
Answer: Staggering equipment startup times using BAS sequencing to prevent coincident demand spikes
BAS-controlled staggered startup prevents all equipment from drawing inrush current simultaneously, flattening the morning peak demand spike at minimal cost.
A facility's walk-in cooler has persistent frost buildup on the evaporator coil between defrosts. Which root cause and remediation pair is correct?
Answer: Excessive door infiltration or gasket failure — repair seals and review defrost schedule frequency
Moisture infiltrating through failed door gaskets or frequent door openings causes rapid frost accumulation; fixing seals reduces latent load and defrost energy.
An EMP candidate is evaluating a heat recovery ventilation (HRV) system for a tight building envelope. Which parameter most directly measures the HRV's energy recovery effectiveness?
Answer: Sensible heat recovery efficiency (sensible effectiveness)
Sensible effectiveness measures the fraction of available heat recovered from the exhaust stream and transferred to supply air, directly quantifying energy recovery performance.
A hospital's central plant is experiencing high chilled water delta-T collapse (supply-return differential less than 8°F vs. design 14°F). Which mitigation restores system efficiency?
Answer: Identifying and replacing failed three-way valves with two-way valves and recalibrating control loops
Failed or improperly controlled three-way valves allow supply water to bypass coils, collapsing delta-T and forcing chillers and pumps to work harder; replacing with two-way valves restores proper differential.
Which retrocommissioning (RCx) finding typically yields the highest energy savings with the lowest implementation cost in commercial buildings?
Answer: Correction of simultaneous heating and cooling caused by improper control sequences
Simultaneous heating and cooling is a controls deficiency correctable through BAS reprogramming at near-zero cost, yet it wastes substantial heating and cooling energy.
A facility wants to mitigate on-site diesel generator fuel consumption during peak demand events. Which paired strategy addresses both demand reduction and backup fuel savings?
Answer: Install rooftop solar PV combined with battery storage for peak shaving
Solar PV reduces daytime peak demand while battery storage can provide peak shaving, both reducing the duration and depth of generator runs during demand events.
Which document is the primary deliverable of an investment-grade energy audit (IGA) that supports financing of remediation projects?
Answer: A detailed engineering analysis with verified baselines, projected savings, M&V plan, and financial pro forma for each measure
An IGA provides lenders and decision-makers with rigorously verified savings projections, M&V protocols, and financial models necessary to underwrite energy efficiency financing.