Temperature in Cold Storage: Your Proactive Monitoring Guide
A practical playbook for moving from reactive temperature checks to a fully proactive cold-storage monitoring program.
A practical playbook for moving from reactive temperature checks to a fully proactive cold-storage monitoring program.
In even the most controlled environments, temperature in cold storage can be unpredictable. When significant fluctuations occur in refrigerators, freezers, or LN2 tanks, the need to act fast to preserve valuable — and often irreplaceable — assets is paramount.
When a freezer fails, there is typically a 4- to 6-hour window to find spare freezer space and move samples before they're compromised. Because refrigerators aren't as well insulated as freezers, there's even less time to address temperature issues in those cases.
In this guide, we'll explore some of the most common causes of cold storage temperature failures and connect each one to the monitoring practices that help facilities across every industry stay proactive instead of reactive.
Power Outages
One in four companies experience a power outage at least once a month. With the rise in extreme weather events — from heat waves to wildfires — that number is expected to climb, and with it the risk to every cold storage system on the grid.
In the middle of a hurricane, a blood plasma collection center loses power for several hours. Without temperature data to prove that samples stayed frozen throughout the outage, hospitals are unable to accept the plasma for patient use.
A remote temperature monitoring system with an internal battery option continues to record temperatures even while the power is out. Once power is restored, staff can review the full temperature record from the outage to confirm the backup generators worked and proper temperatures were maintained.
Equipment Failures
A single -80°C freezer typically costs between $8,000 and $14,000, with an expected service life of 10 to 15 years. But out of every 100 freezers, you can expect one to two failures every year — often well before that lifespan is reached.
A lab storing cardiovascular tissues experiences several freezer failures long before the 10-year mark. One failure happens on a weekend, when no one is in the lab, and isn't discovered until days later.
The freezers are outfitted with a monitoring system that warns lab personnel of each failure via text message before temperatures reach dangerous levels. With no spare freezer space available, the team moves samples to chests with dry ice to prevent thawing — well before any tissue is compromised.
Tripped Circuit Breakers
Industrial circuit breakers have high thresholds, but they still have limits. If a circuit serving a refrigerator, freezer, or LN2 tank is inadvertently overloaded by other appliances, the breaker trips as protection — and kills power to the cold storage system.
After hours, a maintenance worker at a museum plugs a vacuum cleaner into an outlet that shares a circuit with a -80° freezer. The vacuum draws too much current, the breaker trips, and power is cut to a freezer storing valuable plant and animal specimens.
Once the freezer goes offline, museum staff receive repeated alerts that continue until the freezer is back online. On-site, a simple flip of the circuit breaker switch resolves the issue and ensures the specimens are protected.
Internet Outages
Many facilities depend on backup generators in the event of a natural disaster. Even if the generators are working, internet and phone systems can be down — leaving staff with no way of knowing a power outage occurred in the first place.
During a hurricane, a food production facility loses power. Backup generators continue to feed the cold storage systems, but the internet goes down and off-site staff lose all visibility into the facility.
A cloud-based monitoring system with cellular alerting reaches staff even when internet and phone systems are down. The team knows when to go on-site to refuel the generator. The system keeps recording temperature readings throughout the outage and forwards every stored reading once connectivity is restored.
Accidental Unplugging
Major mechanical failures often start with simple human error. A refrigerator or freezer power cord can be unplugged by a cleaning crew making room for another device, or pulled loose when equipment is moved for maintenance.
During a bi-monthly pharmacy inspection, a maintenance worker wheels a freezer away from the wall. Given the freezer's weight, the worker uses substantial force — pulling it far enough to unplug it from the outlet without realizing it.
The unplug event triggers a power monitoring notification to pharmacy staff that the freezer is offline. A team member already on-site takes ownership of the alert, plugs the unit back in, and marks the issue as resolved within minutes.
A Safety Net: Comprehensive Temperature Monitoring
At CORIS, we recognize how much goes into monitoring cold storage systems — and how much is at stake. That's why we've built a monitoring platform that takes the burden off personnel and lets you focus on what matters most: your research, your patients, or your product.
- Cloud-based — access real-time temperature data from any device, inside or outside the facility, even if internet or phone systems are down
- Customizable alerts — a three-tiered escalation scale ensures the right people are notified in real time, with alerts repeated until the issue is marked resolved
- Battery back-up — internal battery packs continue recording temperature data through power or internet outages so you can verify compliance with confidence
See how CORIS can protect what matters to you.
Talk to our team about a deployment tailored to your environment.