How do you calculate permit-to-work load?

Multiply the number of permits issued by the average hours spent per permit. For 30 permits at 1.5 hours each, the load is 45 hours, which is 5.625 full 8-hour days of authorizer time.

What counts as hours per permit?

All time to draft, walk down, verify isolations, authorize, monitor, and close the permit — not just signing it. Confined-space and hot-work permits with gas testing and standby usually run well above the 1.5-hour average.

How many permit authorizers do I need for a turnaround?

Divide the total load by the productive hours per authorizer. At 45 hours of load and roughly 6 productive hours per authorizer per shift, one person can just cover it; double the permits and you need two.

Why convert hours to full days?

Full-day equivalents make staffing conversations concrete. Here 45 hours becomes 5.625 eight-hour days, which tells a planner they need roughly six authorizer-days of coverage for this work scope.

What is a realistic average time per permit?

It varies widely: a general work permit may take 30-45 minutes, while a confined-space entry with continuous monitoring can consume several hours across a shift. Track your own averages by permit type rather than relying on a single number.

How do I reduce permit-to-work load?

Standardize routine permits, pre-plan isolations during the outage prep window, use digital permit systems to cut walk-downs, and reserve high-effort authorization for genuinely high-risk tasks.

Safety & Workforce calculator

Permit to Work Load Calculator

Permit to Work Load estimates the total labor hours your safety and operations team spends issuing, verifying, and closing work permits for high-risk tasks like hot work, confined space, and line breaking. Safety coordinators and maintenance planners use it to right-size permit-office staffing and to justify additional authorizers during shutdowns. When permit volume spikes during a turnaround, this figure quickly shows whether one coordinator can keep up or whether you are about to create dangerous permit backlogs. It turns a permit count into concrete hours and full-day equivalents you can put on a resource plan.

What this calculator does

Estimate the permit-to-work administrative load for Safety & Workforce from permits issued and hours per permit.
Use it to staff and budget the permit-to-work process in Safety & Workforce.
It computes total permit-to-work administrative load by multiplying the number of permits issued by the average hours each permit consumes.

Formula used

Permit-to-work load = permits issued × hours per permit

Inputs explained

Work permits issued:
Admin hours per permit:

How to use the result

Use it when planning shutdown or turnaround staffing, sizing a permit office, or estimating how much authorizer capacity a work backlog will demand.
It assumes an average time per permit; complex confined-space or hot-work permits can take far longer than routine ones, so segment by permit type for accuracy.

Current U.S. benchmarks

Manufacturing hourly earnings average $30.27 (BLS, Jun 2026), up 4.4% from a year earlier. Median machinist pay is $28.24/hr (OEWS 2025), with state medians on each state page. Manufacturers have 529k open positions nationally (BLS JOLTS).

Common questions

How do you calculate permit-to-work load? Multiply the number of permits issued by the average hours spent per permit. For 30 permits at 1.5 hours each, the load is 45 hours, which is 5.625 full 8-hour days of authorizer time.
What counts as hours per permit? All time to draft, walk down, verify isolations, authorize, monitor, and close the permit — not just signing it. Confined-space and hot-work permits with gas testing and standby usually run well above the 1.5-hour average.
How many permit authorizers do I need for a turnaround? Divide the total load by the productive hours per authorizer. At 45 hours of load and roughly 6 productive hours per authorizer per shift, one person can just cover it; double the permits and you need two.
Why convert hours to full days? Full-day equivalents make staffing conversations concrete. Here 45 hours becomes 5.625 eight-hour days, which tells a planner they need roughly six authorizer-days of coverage for this work scope.
What is a realistic average time per permit? It varies widely: a general work permit may take 30-45 minutes, while a confined-space entry with continuous monitoring can consume several hours across a shift. Track your own averages by permit type rather than relying on a single number.

Last reviewed 2026-05-12.