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Reviewed Decompression Schedule Checkpoint Reconciliation

Compare row-count, total-decompression-time and final-runtime checkpoints between two records of the same externally prepared decompression schedule while preserving exact source and version context.

Use this result well

Inputs that matter
One de-identified scope/basis; named responsible schedule/table/device, revision/modification, depth-time/breathing-gas profile, repetitive/last-pressure-exposure and independent-schedule records; plus reviewed and independent row counts, total scheduled decompression minutes and final scheduled runtimes
Output to expect
The preserved schedule provenance, both sets of copied checkpoints and signed reviewed-minus-independent differences for row count, total decompression time and final runtime
How it works
Validate that both records use coherent nonnegative counts/times and positive final runtimes, then subtract the independent checkpoint from the reviewed checkpoint without generating, summing or changing any schedule row
  • Confirm both records describe the exact same table/device/planning-system output, version and modification, complete depth-time/gas profile, repetitive/last-exposure context, start point, inclusion rules and rounding basis.
  • Zero only means the copied checkpoints agree. Resolve every mismatch—and every schedule, NDL, ceiling, ascent, gas, equipment, omitted-decompression, treatment or operational question—through the responsible current procedure and qualified supervision.

Choose your path

Built around the job you need to finish

Reconcile row-count, total-decompression-time and final-runtime checkpoints between two records of the same externally prepared decompression schedule without generating or approving a schedule.

Responsible schedule reviewer checking a transcription

Catch a copied-row or total-time mismatch while keeping the exact table/device, revision, profile and repetitive context visible.

Name every source record, copy three checkpoints from the responsible schedule and an independent transcription, then inspect signed differences.

Can route a mismatch back to the accountable schedule owner without using the worksheet to change a stop or approve the dive.

Instructor reviewing a supervised schedule-reading exercise

Teach record discipline without presenting invented NDL, stop, gas-switch or gradient-factor advice.

Load the three-row/18-minute/52-minute example, inspect the provenance and three subtraction steps, then alter one independent checkpoint.

The learner can distinguish record agreement from model, schedule, equipment or operational validity.

Operations records auditor preserving version context

Confirm two archived records refer to the same schedule/version/profile before comparing their numeric checkpoints.

Retain table/device designation, revision/modification, depth-time/gas profile and prior-exposure context, then export a deliberate reviewed run.

Receives a traceable discrepancy record without emergency, treatment or omitted-decompression instructions.

Authoritative checks for this tool

Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.

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Reference & details

How it works

Schedule identity comes first

Two totals are comparable only when both records refer to the exact same externally prepared schedule, table/device or planning-system output, version, modification, depth-time/gas profile and repetitive context. This page does not select any of them.

identity = source + version/modification + complete profile context

Three copied checkpoints

Compare schedule row count, total scheduled decompression minutes and final runtime using the same start point, inclusion and rounding basis. The worksheet does not inspect individual stops or recalculate either source.

reviewed checkpoint − independent checkpoint

Agreement is not approval

Zero does not validate the schedule model, table/device, version, gas, repetitive context, equipment, team or dive. Positive and negative values are discrepancy directions only and must return to the responsible process.

0 difference = copied checkpoints agree

Updated: August 2026

Example Scenarios

An instructor provides an example schedule with three rows, 18 total decompression minutes and 52 minutes final runtime. An independent transcription matches all three, so each signed difference is zero without validating or approving the schedule.

The responsible record contains four rows while the independent transcription contains three. A +1 row difference flags the archive/transcription for responsible review; the page never invents the missing row or its depth, gas or duration.

Two outputs share a title but identify different table or software revisions. The reviewer does not force a numeric comparison; they first obtain records from the same exact schedule version and profile context.

FAQ

No. It accepts only checkpoints copied from two records of one already prepared responsible schedule. It cannot generate, sum, alter or approve any stop, ceiling, ascent or gas switch.

Named tables, devices and planning systems can change, and a local modification can change output. Numeric checkpoints are not comparable until both records identify the same exact source/version/modification and profile basis.

No. Zero confirms only that the three copied checkpoints agree. It says nothing about model selection, schedule completeness, gas, repetitive loading, equipment, team readiness or operational authorization.

A complete schedule's final runtime cannot be numerically shorter than the decompression portion it includes. A violation indicates incompatible definitions or a transcription error; it is not repaired automatically.

Do not use this arithmetic worksheet for emergency or treatment decisions. Follow the responsible current emergency procedure and obtain qualified medical or operational assistance appropriate to the actual situation.

About Reviewed Decompression Schedule Checkpoint Reconciliation

Use this worksheet only after a responsible decompression schedule already exists. Preserve the exact schedule/table/device, revision or modification, complete depth-time and breathing-gas profile, repetitive or last-pressure-exposure record and an independent transcription. Compare three copied checkpoints without calculating NDL, stops, ceilings, ascent, gas switches, models, gradient factors, repetitive loading, treatment or emergency action.