ASHRAE Journal Supplement - AMCA InMotion - November 2024 - 24

Item
Requirements
Clean Drinking Water
Cooldown Areas
■ Provide free access to potable water that is fresh and suitably cool.
■ Provide access to at least one cooldown area.
Cooldown Rest Periods ■ Encourage and allow cooldown rest periods.
Assessment and
Control Measures
Weather Monitoring
Emergency Response
Acclimatization Period
Training
Heat-Illness Prevention
■ Measure air temperature and heat index and record whichever is greater when
either reaches 87°F (32°C).
■ Implement feasible engineering controls (fans, HVAC, etc.) fi rst.
■ For workplaces affected by outdoor temperature, check weather reports and
respond to hot-weather advisories.
■ Provide fi rst aid or emergency response to any worker showing heat-illness signs
or symptoms.
■ Closely observe new or newly assigned workers working in hot areas for 14 days.
■ Provide heat-related training to workers and supervisors.
■ Establish, implement, and maintain an effective written plan for preventing indoor
heat illness.
Adapted from Cal/OSHA Heat Illness Prevention Guidance and Resources6
TABLE 3. Summary of heat-injury-related provisions of California Code of Regulations Title 8.
■ one of two 15-ton (53 kW) rooftop units (RTU)
■
■
one 18-ft- (5.5 m) diameter ceiling fan with four air
changes per hour (ACH) of ventilation
four 14-ft- (4.3 m) diameter ceiling fans with four ACH
of ventilation
Peak demand for the emergency comfort/lighting
system (kilowatts [kW]), the estimated daily electricity
use of the system (kilowatt-hours [kWh]), and
the approximate size of the supporting solar array
(direct-current [DC] kW) are shown for comparative
purposes.
Table 2 illustrates the extremely low energy use of
the air-circulation-plus-ventilation design concept.
As shown in the previous section, reasonable thermal
comfort/low heat stress can be achieved, even at high
air temperatures.
Regulations
On July 2, 2024, the U.S. Occupational Safety and Health
Administration (OSHA) issued a proposed rule on the
prevention of heat injury and illness in outdoor and indoor
work settings. The rule would apply to all employers and
be triggered when employees are exposed to temperatures
of 80°F (27°C) for more than 15 minutes of a 60-minute
24
2024 AMCA inmot ion
period. Later in July, a similar regulation starting at 82°F
(28°C) went into effect in California (California Code of
Regulations Title 8, Industrial Relations).
Section 3396 of California Code of Regulations Title
8 applies to indoor work areas where the temperature
equals or exceeds 82°F (28°C). Exceptions include remote
locations of an employee's choosing, some emergency
operations, and some areas with short-term heat exposure.
California is one of the fi rst states with a heatinjury-related
regulation. Expect similarly minded
states to follow suit.
Table 3 provides an overview of the California
regulation.
Conclusion
The data doesn't lie: Extreme heat is becoming increasingly
common, posing a threat to human health and life.
As regulatory bodies strive to address risks and challenges
from a legal perspective, there are simple changes
that can be made to existing construction and elegant
solutions that can be designed into new builds that will
safeguard occupants and equipment while delivering
productivity increases, reduced downtime, energy effi -
ciency, and cost savings.
www.amca.org
(h)(2)
(f)
(g)
(h)
(i)
Section
(c)
(d)(1)
(d)(2)
(e)
http://www.amca.org
ASHRAE Journal Supplement - AMCA InMotion - November 2024

Table of Contents for the Digital Edition of ASHRAE Journal Supplement - AMCA InMotion - November 2024
