Lockout/Tagout Permit Manager - LOTO Safety Tool

How It Works

1. Select Equipment

   Identify the equipment or machine being serviced. Enter the equipment name, ID number, location, and a brief description of the maintenance work to be performed.

2. Identify Energy Sources

   Document every energy source associated with the equipment: electrical (voltage, phase), pneumatic (PSI), hydraulic (PSI), thermal (temperature), gravitational (elevated components, springs), and chemical (process fluids, gases). Missing an energy source is the most common cause of LOTO-related fatalities.

3. Assign Locks & Tags

   Record the lock number, tag number, and name of the authorized employee applying each lock. Each worker exposed to the hazard must apply their own lock. Group LOTO procedures require a primary authorized employee to coordinate.

4. Document Verification Steps

   Record the zero-energy verification method for each energy source. This may include attempting to start the equipment, checking voltage with a meter, bleeding pressure gauges, and verifying that moving parts are at rest.

5. Print or Export Permit

   Generate a printable LOTO permit that includes all energy sources, lock assignments, and verification steps. Keep the printed permit at the equipment location for the duration of the maintenance work.

Built For

• Manufacturing plant maintenance departments creating standardized LOTO procedures
• OSHA compliance documentation for annual safety audits and inspections
• Contractor coordination when outside workers perform maintenance on your equipment
• Equipment repair and maintenance planning with formal energy isolation documentation
• Safety training exercises using realistic LOTO permit scenarios
• Post-incident investigation records showing LOTO procedures were followed
• Multi-craft maintenance jobs requiring coordination between electrical, mechanical, and process teams

Features & Capabilities

Multi-Energy Source Tracking

Track all six categories of hazardous energy on a single permit: electrical, pneumatic, hydraulic, thermal, gravitational, and chemical. Each source gets its own isolation point, method, and verification step because real equipment rarely has just one energy source.

Lock & Tag Assignment

Record individual lock and tag numbers for each authorized employee. Supports both individual LOTO (one worker, one lock per point) and group LOTO (multiple workers under a primary authorized employee with a lock box).

Verification Checklist

Built-in checklist for zero-energy verification steps. Prompts the user to document how each energy source was verified as isolated - not just locked out, but proven to be at zero energy state.

Printable Permits

Generate formatted, printable LOTO permits that can be posted at the equipment location during maintenance. Includes all required information: equipment ID, energy sources, lock assignments, verification records, and authorized personnel.

Equipment Database

Save equipment profiles with their associated energy sources so you do not have to re-enter the same information for repeat maintenance. Standardizes procedures across shifts and ensures no energy sources are forgotten.

Group LOTO Support

Handles group lockout/tagout scenarios where multiple maintenance workers need to apply their individual locks. Tracks the primary authorized employee, the group lock box, and each individual worker's lock application and removal.

Comparison

Assumptions

• Equipment has identifiable energy isolation points (disconnects, valves, block/bleed devices) for each energy source
• Standard worker weight of 250 lbs per OSHA guidelines is used for any load-related calculations
• Each authorized employee applies their own individual lock — group LOTO uses a lock box with a primary authorized employee coordinating
• Zero-energy verification is performed after lockout using appropriate test instruments for each energy type
• Energy sources are limited to the six standard OSHA categories: electrical, pneumatic, hydraulic, thermal, gravitational, and chemical
• All locks and tags meet OSHA 1910.147(c)(5) requirements for durability, standardization, and identification
• Permit documentation is supplemental to the facility's written energy control procedures — not a replacement

Limitations

• Does not identify energy sources automatically — a qualified person must perform the initial energy survey for each piece of equipment
• Cannot verify that field conditions match the documented procedure — physical verification by an authorized employee is always required
• Does not account for complex multi-employer LOTO situations where multiple contractors share isolation points
• Stored energy (capacitors, springs, pressurized accumulators) may require dissipation steps not captured in a simple lock-and-tag checklist
• Does not replace the OSHA-required annual inspection of energy control procedures by an independent authorized employee
• Permit templates may not satisfy site-specific requirements imposed by the AHJ, insurer, or corporate safety program

References

• OSHA 29 CFR 1910.147 — The Control of Hazardous Energy (Lockout/Tagout)
• OSHA 29 CFR 1910.333 — Selection and Use of Work Practices (electrical safety-related work practices)
• ANSI/ASSE Z244.1 — The Control of Hazardous Energy: Lockout, Tagout, and Alternative Methods
• NFPA 70E — Standard for Electrical Safety in the Workplace (energy isolation and verification)
• OSHA Publication 3120 — Control of Hazardous Energy (Lockout/Tagout) guidance document
• OSHA Fact Sheet — Lockout/Tagout (summary of 29 CFR 1910.147 requirements and penalties)

Frequently Asked Questions