Gas Distribution Leak Survey Bar Hole Log

This template is built for gas distribution leak surveys that use bar holes and surface checks to document where readings were taken, what the instrument showed, and how each finding was handled. It includes inspection details, instrument verification, reading capture, leak classification, immediate controls, and final disposition. It is meant to produce a defensible field record, not just a list of numbers.

Use it during routine leak patrols, post-repair verification, odor complaints, abnormal pressure events, construction damage follow-up, or any survey of mains, services, valves, and other appurtenances. It is also useful when a route or stationing segment needs repeatable documentation over time. If the task is a full emergency response report or a design/as-built record, a different form may be more appropriate.

The log should be completed by a competent person or qualified technician who can operate the gas detector, interpret readings, and recognize leak indicators such as odor, hissing, bubbling, or dead vegetation. A supervisor should review entries when a critical leak, failed instrument check, or escalation occurs. The form works best when the person taking the reading is also recording the location and immediate disposition at the point of observation.

It is typically used each time a survey is performed, whether that is on a scheduled patrol, after a complaint, or during follow-up on a known issue. Many organizations also use it as a recurring field log for route-based inspections so trends can be compared by segment or stationing. The cadence should match your utility procedures, risk profile, and any local regulatory or company requirements.

The template supports documentation practices commonly expected under OSHA general industry and construction safety programs, as well as utility procedures aligned with ANSI and NFPA expectations for hazard control and emergency response. It helps show that instruments were verified, readings were taken at identifiable locations, and critical findings triggered escalation. It does not replace your utility’s operating rules, emergency plan, or any Authority Having Jurisdiction requirements.

Common misses include recording a gas reading without the stationing or offset, skipping the instrument bump test or calibration status, and failing to note the bar-hole depth used for the sample. Another frequent issue is not repeating a reading after an action threshold is exceeded or not documenting the immediate control taken. This template forces those details into the record so the survey can be reviewed later without guesswork.

Yes. You can add route IDs, map references, GIS asset numbers, leak grade fields, or company-specific action thresholds without changing the core flow. Many teams also customize the disposition section to match their repair, monitoring, or excavation hold process. The structure is flexible enough for mains, services, station areas, and valve corridors.

Yes. The fields map well to work orders, asset records, and GIS location data because the template already captures route, stationing, offset, and follow-up disposition. You can connect it to photo attachments, instrument asset records, and corrective action workflows if your system supports those links. That makes it easier to trace a reading back to a specific location and action.

A general checklist usually asks whether something was checked, while this log captures the exact measurement, location, and response. That matters for gas leak surveys because the value of the record is in the bar-hole depth, ppm or %LEL reading, and the classification decision that followed. It is designed for field evidence, not a simple pass/fail audit.