Gas Monitor Rentals for Industrial Turnarounds

Gas monitoring helps turnaround teams understand whether the atmosphere in a work area may contain oxygen deficiency or enrichment, toxic gases, or flammable vapours. Total Group’s Turnarounds service includes rental options for portable gas monitors used in planned shutdowns, maintenance work, processing units, storage tanks, and other enclosed or higher-risk areas. The right monitor depends on the hazards identified for the task, the work area, and the project’s monitoring plan.

For service information beyond a shutdown project, see Total Group’s gas monitor rentals service. This page focuses on turnaround scheduling, work-front coordination and project handovers.

A rental is one part of the control system. It does not replace the employer’s hazard assessment, entry permit, confined-space plan, isolation and ventilation controls, emergency arrangements, or the competent person responsible for testing. Before a monitor is issued, the project team should confirm which gases may be present, whether the work can change the atmosphere, where readings will be taken, how often they must be repeated, who will interpret the readings, and what action follows an alarm or unsuitable result.

Plan the monitor around the hazard assessment

CCOHS identifies toxic gases, flammable or explosive gases, and oxygen levels outside the safe range as common reasons for atmospheric testing. Its guidance also says that testing may be needed before entry, during work, or continuously, depending on the hazards and risks. Equipment should be appropriate for the atmosphere and calibrated according to the manufacturer’s instructions, with results recorded and retained. CCOHS guidance on confined-space atmospheric testing explains these planning points and cautions that testing is only one part of an entry program.

Total Group can help clients identify a rental configuration for the planned monitoring task, such as a single-gas or multi-gas instrument. The final sensor set, alarm settings, sampling approach, and use of continuous monitoring must be confirmed by the employer or other responsible site authority against the hazard assessment, applicable law, the manufacturer’s instructions, and the project plan. A monitor cannot detect a substance for which it has no suitable sensor, and a reading still needs competent interpretation.

Equipment coordination for shutdown work

Turnaround work changes quickly. Tanks may be opened, lines may be drained or reconnected, hot work may begin, and work groups may move between areas. Rental planning should therefore connect the monitor to the permit process and daily coordination rather than treating it as a standalone item. Confirm the work location, gas hazards, required instrument type, calibration or functional-check records, charging or battery needs, inspection status, user training, and the process for reporting a damaged, overdue, or alarming unit.

Ontario’s official confined-space guideline says instrument selection should consider the detection principle, interferences, detection range, response time, calibration requirements, and whether equipment is suitable for a space where flammable hazards may accumulate. It also notes that samples should represent possible stratified atmospheres and contaminated pockets. Read the Ontario atmospheric-testing guideline for the jurisdiction-specific requirements and planning guidance.

CSA Group lists CSA C22.2 No. 62990-1:20 (R2025) as a Canadian standard for performance requirements of detectors for toxic gases. It is a standards-owner reference, not a statement that the complete standard applies by law to every project. The controlling requirements may instead come from the site jurisdiction, employer program, client specification, or a standard incorporated by that requirement.

Keep roles clear at the worksite

The employer and site authority remain responsible for the work plan, hazard assessment, permits, worker instruction, testing decisions, records, and response to changing conditions. The person performing tests must have the knowledge, training, and experience required by the applicable framework. A rental provider supplies equipment and agreed support; it does not assume the employer’s legal duties or decide whether a worker may enter or continue work.

Alberta illustrates why the project location must be confirmed before a rental plan is finalized. Under Part 5 of Alberta’s Occupational Health and Safety Code, sections 45 and 52 address competent-person hazard assessment and atmospheric testing with calibrated instruments. Sections 55 and 56 address effective rescue and tending-worker duties in specified conditions. Review the Alberta OHS Code, Part 5 when Alberta rules govern the work. Other provinces, territories, federal undertakings, and client programs may set different requirements.

Discuss your turnaround rental needs

Share the work areas, substances that may be present, confined-space or hot-work activities, monitoring frequency, project dates, and any client equipment requirements with the Total Group team. This gives the project team a basis for discussing the monitor type, supporting records, handover expectations, and coordination with the site’s existing safety program. For broader turnaround support, visit the Total Group Turnarounds service hub.