Bay Area Heat Risk: How Facility Managers and Electrical Contractors Can Work Together on Heat Safety

Summer may be winding down, but Bay Area heat risk isn’t. Late August can feel like the end of summer. In the Bay Area, hot weather can stretch well into September and even October. Historically, some of the region’s significant heat events have occurred in the fall, which means heat illness prevention remains important long after the traditional summer months are over.

For building and facility managers, that matters when electrical work is taking place in attics, crawlspaces, electrical rooms, rooftops, exterior conduit runs, and other areas where temperatures can rise well above outdoor conditions.

For electricians, the risk can be even greater. Crews performing energized or arc-rated work may be wearing flame-resistant clothing and additional personal protective equipment, adding to the body’s thermal load.

Heat illness is preventable, but prevention requires planning from both the electrical contractor and the facility team.

Why Heat Conditions Matter on Commercial and Industrial Electrical Projects

Electrical work often takes place in areas where heat builds up rapidly, including rooftops, attics, mechanical rooms, exterior work areas, electrical yards, and unconditioned spaces.

A temperature reading outside the building may not reflect what an electrician is experiencing at the actual work location.

That is why RK Electric evaluates heat exposure as part of jobsite planning and follows its Heat Illness Prevention Program in accordance with California requirements for outdoor and indoor workplaces.

Cal/OSHA Heat Illness Prevention Requirements: What Facility Managers Should Know

California’s heat illness prevention standards establish specific protections for employees working in elevated temperatures. Several of those requirements may be visible to building and facility managers while electrical work is underway.

Water Access Requirements for Outdoor and Indoor Heat Work

Workers must have access to fresh, cool, potable drinking water, with enough available to provide at least one quart, or 32 ounces, per employee per hour when working in heat conditions.

Supervisors encourage employees to drink frequently and monitor water availability throughout the shift. Workers should hydrate regularly rather than waiting until they feel thirsty.

Facility managers can help by making sure planned work areas allow practical access to water and by identifying any building restrictions that could affect hydration stations before work begins.

Shade and Cool-Down Break Requirements at 80°F and Above

Accessible shade must be available when temperatures reach or are expected to reach 80°F. Employees must also be allowed to take preventative cool-down breaks when needed.

On some projects, this may mean identifying a shaded exterior area, conditioned interior space, temporary shelter, or another safe location near the work activity.

Coordinating these areas in advance is particularly important at secure facilities, occupied buildings, rooftops, and sites where contractor access is tightly controlled.

Rest and Recovery Breaks for Heat-Related Symptoms

Employees experiencing signs of heat illness must be able to stop work, cool down, and recover. Facility managers should expect that work may occasionally pause during extreme conditions. These breaks are an important safety control, not lost productivity. A short break can help avoid a medical emergency, a shutdown, or a much longer project disruption.

Heat Acclimatization: Adjusting Workloads for New or Returning Crews

Workers who are new to high-heat environments or returning after time away may need a gradual transition before performing full shifts in hot conditions. Supervisors are responsible for monitoring acclimatization and adjusting workload and exposure appropriately.

For facility managers, this is another reason to discuss scheduling and site conditions with your electrical contractor before work begins. A project planned for the hottest portion of the afternoon may need to be shifted to an earlier start, divided into shorter work periods, or completed over a different schedule.

High-Heat Procedures: What Happens at 95°F and Above

When temperatures reach or exceed 95°F, additional high-heat procedures apply. RK Electric supervisors establish direct communication with crew members, confirm emergency response responsibilities, reinforce hydration and heat illness awareness, and evaluate whether work conditions remain safe.

Depending on the site and scope, that may mean:

• Moving work to cooler hours
• Increasing rest and hydration periods
• Adjusting the sequence of work
• Reducing exposure time
• Shortening the workday
• Suspending work until conditions improve

For facility managers, flexibility can make a significant difference. Allowing an earlier start time, providing access to a cooler recovery area, or temporarily changing building access restrictions can help crews complete critical electrical work more safely.

Know the Signs of Heat Illness

Facility teams may be working near electrical crews, so everyone on site should recognize the warning signs.

Heat Exhaustion Warning Signs:

• Heavy sweating
• Pale or clammy skin
• Fast, weak pulse
• Nausea
• Muscle cramps
• Dizziness
• Fatigue
• Headache
• Fainting

A worker showing these symptoms should be moved to a cooler location, allowed to rest, cooled, and slowly hydrated. If the condition does not improve promptly, emergency medical assistance may be necessary.

Heat Stroke Warning Signs

• Very high body temperature
• Hot or dry skin
• Rapid, strong pulse
• Confusion
• Slurred speech
• Loss of consciousness
• Abnormal or absent sweating despite heat exposure

Heat stroke is a medical emergency! If heat stroke is suspected, call 911 immediately and begin cooling the person while emergency responders are on the way.

Don’t Let the Calendar Determine Your Heat Plan

The end of August does not necessarily mean the end of high temperatures in the Bay Area.

Before electrical work begins, facility managers should discuss likely working conditions with their contractor, identify hot or unconditioned spaces, determine where crews can take cool-down breaks, review water access, and consider scheduling options when high temperatures are forecast.

Facility teams should also make sure contractors understand site-specific emergency procedures, security restrictions, access limitations, and communication requirements.

Small planning decisions can have a major impact on worker safety.

Safety and Productivity Go Together

Heat illness prevention requires coordination. Electrical contractors are responsible for protecting their crews. Building and facility managers play an important supporting role by creating site conditions that allow those safety measures to work.

When hot-weather work is planned correctly, crews can work more safely, facilities can reduce the risk of unexpected shutdowns or medical emergencies, and critical electrical projects can stay on track.

At RK Electric, heat illness prevention is part of how we plan and execute work safely, whether it is June, August, or a hot September afternoon.