The HACCP Guide for Food and Beverage Manufacturers: The 7 Principles and Where Monitoring Fits

HACCP started as a NASA problem. In the 1960s, Pillsbury was developing food for the U.S. space program, and the standard approach to food safety at the time, testing finished product samples, wasn't good enough for astronauts who couldn't afford to get sick in orbit. Working with NASA and the Army's food research labs, Pillsbury's food scientists built a different model: control the hazards at each step of the process instead of hoping a sample test at the end catches a problem. That model became Hazard Analysis and Critical Control Point, or HACCP, and it's still the backbone of how most food manufacturers think about food safety today.

The National Advisory Committee on Microbiological Criteria for Foods formalized HACCP into the seven principles most facilities use now, adopted in 1997 and still the reference document the FDA points to. Almost sixty years after that original NASA problem, the core idea hasn't changed: prevention beats inspection, and you can't prevent what you're not watching.

What Is HACCP?

HACCP is a systematic, science-based approach to identifying and controlling food safety hazards before they reach a consumer. Rather than relying on end-product testing, a HACCP system identifies the specific points in a process where a biological, chemical, or physical hazard can be prevented, eliminated, or reduced to a safe level, and it builds monitoring and documentation around those exact points.

A HACCP plan is built on a foundation of prerequisite programs, things like sanitation procedures, supplier controls, and current Good Manufacturing Practices, that have to be in place before the HACCP principles can function correctly. From there, a HACCP team, typically a cross-functional group spanning production, quality, sanitation, and engineering, works through five preliminary tasks: describing the food and its distribution, describing its intended use and consumers, mapping the process in a flow diagram, and verifying that diagram against what's actually happening on the floor. Only after those tasks are complete does the team apply the seven HACCP principles.

The Seven HACCP Principles

The seven principles are the operational core of any HACCP system, and they're meant to be applied in sequence:

• Conduct a hazard analysis. Identify which biological, chemical, or physical hazards are reasonably likely to occur at each step of the process.
• Determine the critical control points. Pinpoint the exact steps where a control can be applied to prevent, eliminate, or reduce a hazard, such as a cook step, a chill step, or a metal detector.
• Establish critical limits. Set the specific maximum or minimum value, whether that's temperature, time, pH, moisture, or another measurable parameter, that separates a safe process from an unsafe one at each CCP.
• Establish monitoring procedures. Define how, and how often, each CCP will be observed or measured to confirm it stays within its critical limit.
• Establish corrective actions. Determine in advance what happens when a critical limit is missed, including how the affected product is handled and who's responsible for the response.
• Establish verification procedures. Confirm, through calibration checks, record review, and periodic audits, that the whole system is actually working as designed.
• Establish record-keeping and documentation procedures. Maintain the records that prove monitoring, corrective actions, and verification happened as planned.

The FDA's own guidance on this is worth noting directly: continuous monitoring is described as always preferable when it's feasible, since it closes the gap between a developing problem and someone actually catching it. That single point, continuous over periodic, is where a lot of manufacturers still have room to improve.

Who Is Required to Follow HACCP, and Who Isn't

HACCP is mandatory for exactly two categories of FDA-regulated food facilities: seafood processors under 21 CFR Part 123, in place since 1997, and juice processors under 21 CFR Part 120, in place since 2001. Meat, poultry, and egg product facilities fall under a separate mandatory HACCP requirement enforced by USDA's Food Safety and Inspection Service rather than the FDA.

Every other FDA-regulated human food facility operates under the Preventive Controls for Human Food rule (21 CFR Part 117) instead of a HACCP mandate. That said, plenty of manufacturers outside seafood and juice adopt HACCP voluntarily, often because a retailer, co-packer, or GFSI-benchmarked certification scheme like SQF or BRCGS requires a documented HACCP-based food safety system as a condition of doing business. In that sense, HACCP has become something closer to an industry standard than a narrow regulatory requirement.

How HACCP and FSMA Fit Together

HACCP predates FSMA by roughly four decades, and it shows. When FDA built the Preventive Controls for Human Food rule, it borrowed HACCP's core architecture almost directly: a documented hazard analysis, established controls, ongoing monitoring, corrective action procedures, verification, and records. The main difference is scope and legal trigger. HACCP is mandatory only where a specific regulation names it, while FSMA's preventive controls apply broadly across nearly all covered human food facilities regardless of product category.

A facility can be subject to one framework, the other, or occasionally both, depending on what it produces. Seafood and juice processors follow HACCP and are generally exempt from Part 117's preventive controls requirements for those specific activities, though they still have to meet the underlying good manufacturing practices. For a closer look at how these two frameworks interact for food and beverage manufacturers specifically, SensFlo's guide on machine monitoring for food and beverage production walks through both side by side, and the SensFlo food and beverage solutions page covers how each shows up in day-to-day plant operations.

Where HACCP Programs Struggle in Practice

A HACCP plan on paper and a HACCP system that's actually running are two different things. The gap usually shows up at the monitoring step, since FDA's own guidance acknowledges that continuous monitoring isn't always practical, which means a lot of facilities default to periodic checks instead.

A cook temperature logged once an hour, a cooler checked at shift change, a metal detector tested on a fixed schedule rather than continuously, each of these is a legitimate monitoring approach, but each also leaves a window where a deviation can occur and go undetected until the next scheduled check. When that happens, corrective action starts later than it should, and the record supporting it often gets reconstructed from memory rather than captured in the moment. Verification adds another layer of manual work on top, since someone still has to pull those paper logs together, check them against the critical limits, and document that the review happened. None of this reflects a poorly designed HACCP plan. It reflects the practical limits of doing continuous monitoring with people and clipboards instead of instruments.

How Real-Time Monitoring Strengthens Each HACCP Principle

Connected monitoring doesn't change what a HACCP plan requires. What it changes is how consistently the monitoring, corrective action, verification, and record-keeping principles actually get executed on the floor.

At the monitoring step, a connected sensor on a cooler, a CIP line, or a thermal process reads temperature, humidity, moisture, or pH continuously rather than at scheduled intervals, which is the exact approach FDA's guidance already identifies as preferable wherever it's feasible. When a reading crosses an established critical limit, an automated alert routes to the person responsible for corrective action, often before the deviation affects more than a small window of product. Every reading, alert, and response gets timestamped and stored, which turns verification and record review into a matter of checking a system rather than reconciling paper. And because that history persists automatically, a comprehensive verification audit or a customer's supplier assessment has a complete, dated trail to review instead of gaps a team has to explain.

None of this replaces the HACCP team's judgment. The hazard analysis, the CCP determinations, the critical limits themselves, and the validation that a control measure actually works still require the expertise of the people who built the plan. What changes is the reliability of the data feeding that team's decisions.

How SensFlo Supports HACCP-Based Food Safety Programs

SensFlo's FloControl platform is built around closing that exact gap between a plan and what's actually happening on the floor. Sensors install on existing equipment in under sixty seconds without wiring or control system access, which means a facility can start capturing continuous data at its CCPs without a capital project or a production shutdown.

The Pro level is where this maps most directly onto HACCP monitoring, tracking temperature, humidity, moisture, and pH, which happen to be among the most common critical limit parameters named in FDA's own HACCP guidance. Facilities using this level to monitor process conditions report meaningful reductions in product loss alongside measurable extensions in shelf stability. For manufacturers running HACCP across multiple sites or needing that monitoring data connected to an existing quality or ERP system for centralized verification and audit readiness, the Premier level feeds that data directly into those systems.

As with any monitoring technology, the responsibility for the hazard analysis, the CCP determinations, and the critical limits themselves stays with the facility's HACCP team. FloControl's role is making sure that team has continuous, accurate, easily retrievable data to monitor those CCPs, act on deviations quickly, and document that the system worked the way it was designed to.

Where to Start

The most effective starting point is usually the CCP with the highest food safety consequence if it fails, whether that's a pasteurizer, a chill step, or a critical storage temperature, rather than trying to instrument an entire HACCP plan at once. Facilities can review the SensFlo food and beverage industry page for equipment-specific applications, or run the numbers on a specific monitoring investment through the SensFlo ROAI Calculator.

Frequently Asked Questions

What is HACCP in food safety?

‍HACCP, Hazard Analysis and Critical Control Point, is a systematic approach to identifying food safety hazards and controlling them at specific points in a production process rather than relying on testing the finished product. It was formalized into seven principles by the National Advisory Committee on Microbiological Criteria for Foods and remains the FDA's core guidance on the topic.

What are the seven HACCP principles?

‍The seven principles are conducting a hazard analysis, determining critical control points, establishing critical limits, establishing monitoring procedures, establishing corrective actions, establishing verification procedures, and establishing record-keeping and documentation procedures. Each principle builds on the one before it, starting with identifying hazards and ending with the records that prove the system worked.

Is HACCP legally required for food manufacturers?

‍HACCP is mandatory only for FDA-regulated seafood processors under 21 CFR Part 123 and juice processors under 21 CFR Part 120. Meat, poultry, and egg processors follow a separate mandatory HACCP requirement enforced by USDA, and most other food manufacturers operate under FSMA's Preventive Controls for Human Food rule instead, though many still adopt HACCP voluntarily to meet retailer or GFSI certification requirements.

What's the difference between HACCP and FSMA?

‍HACCP is an industry food safety framework built around identifying and controlling hazards at critical control points, while FSMA's Preventive Controls for Human Food rule is the federal regulation that most conventional food manufacturers actually have to follow. FSMA's structure borrows heavily from HACCP's principles, but the two are legally distinct, and SensFlo's FSMA compliance guide breaks down how they compare in more detail.

Can monitoring software make a facility HACCP compliant?

‍No, compliance depends on the facility's own hazard analysis, CCP determinations, validated critical limits, and the expertise of its HACCP team. Monitoring platforms like FloControl can make the monitoring, corrective action, and verification components of an existing HACCP plan more consistent and easier to document, but they don't replace the plan itself.

How does SensFlo support HACCP-based monitoring at critical control points?

‍SensFlo's Pro and Premier tiers continuously track temperature, humidity, moisture, and pH, the process values most commonly tied to critical limits, and route deviations into alerts and timestamped records. Manufacturers can compare tiers on the pricing page or schedule a consultation to identify which CCPs would benefit most from continuous monitoring.

Sixty years after a food scientist at Pillsbury decided that testing the finished can wasn't good enough for an astronaut, the same principle still separates the food safety programs that hold up from the ones that don't. It was never really about the paperwork. It was always about knowing what's happening at the critical point while there's still time to do something about it.