An escape set can remain sealed in its cabinet for months and still be unavailable when an operator needs it. A depleted cylinder, perished hood seal or damaged activation mechanism is enough to turn emergency equipment into a false assurance. Knowing how to inspect escape sets is therefore a practical control for marine, offshore, power-generation and high-risk industrial operations.

An escape set is designed for one purpose: enabling a person to leave an irrespirable atmosphere. It is not a substitute for working breathing apparatus, a rescue set or a fire-fighting BA set. Inspection must confirm that the unit will activate correctly, deliver the stated duration of breathable air and remain usable by the intended wearer under evacuation conditions.

Start with the equipment standard and site requirement

Before opening or testing any unit, identify the exact make, model, rated duration and approved configuration. Compressed-air escape sets, emergency escape breathing devices and hood-based escape apparatus vary in their activation method, cylinder pressure, alarm arrangement and service intervals. A check procedure taken from a different model can create damage or invalidate the manufacturer’s maintenance requirements.

The manufacturer’s instructions remain the primary reference. They should sit alongside the site’s emergency response plan, maintenance management system and any requirements imposed by the vessel’s flag state, class society, client, local regulator or insurer. For offshore and marine assets, the equipment register should also identify the allocated location, serial number, cylinder details and next service date.

A competent person should conduct planned periodic inspections and servicing. However, users and supervisors also need a defined pre-use or routine visual check. The difference matters: a routine check establishes that a set appears ready for immediate use; it does not replace pressure testing, regulator overhaul or other workshop-level maintenance.

How to inspect escape sets during a routine check

Carry out the inspection in a clean, well-lit area and avoid breaking seals or actuating components unless the manufacturer specifically permits it. Record the outcome immediately. A set with any uncertainty should be removed from service, marked clearly and replaced with a serviceable unit.

Check the location, access and identification

First, confirm that the escape set is in its designated position and can be reached without obstruction. Cabinets must open freely, signage must be visible and the route to the equipment must not be blocked by stores, temporary pipework or operational materials. In an evacuation, location discipline is as relevant as the condition of the set itself.

Check that the label is legible and corresponds with the equipment register. Verify the serial number where accessible, the model, rated duration and service or inspection status. Look for expired inspection labels, missing asset tags or evidence that the unit has been moved from its assigned area.

Where sets are stowed in external lockers, engine-room spaces or exposed offshore locations, inspect the cabinet or container as well. Water ingress, salt deposits, condensation, UV degradation and dust can affect the equipment long before a defect is visible on the set itself.

Examine the case, seals and tamper indicators

Inspect the carrying bag, hard case or protective container for cuts, cracked hinges, damaged catches, corrosion and distorted surfaces. The container must protect the apparatus while allowing rapid access. If it cannot be opened easily with gloved hands, it requires attention.

Check tamper seals and security ties against the approved configuration. A broken seal does not automatically prove the set is defective, but it does mean its history is uncertain. Treat it as requiring a full competent-person inspection before returning it to service.

Look for signs of unauthorised use, such as disturbed straps, altered cylinder position, missing instruction cards or a partially opened pouch. Escape sets should be stored complete and ready to don, not repacked loosely after training or inspection.

Confirm cylinder condition and available air

For compressed-air equipment, inspect the cylinder body and valve area for corrosion, dents, gouges, heat damage, contamination or damage to the protective boot. Examine the cylinder test marking and service label. A cylinder outside its required periodic test date must not remain in operational service, even if the pressure appears satisfactory.

Read the pressure gauge or indicator in accordance with the manufacturer’s instructions. The indicated pressure must meet the acceptance level for that model, accounting for the stated charging pressure and ambient temperature. A cylinder can show a reduced reading in cold conditions, so do not make assumptions from a single number without referring to the equipment specification.

Also check that the valve, handwheel or activation assembly is protected from accidental operation. Do not open a cylinder valve simply to prove that air is present unless the approved procedure calls for it. Unnecessary activation can deplete the cylinder, disturb seals or introduce a maintenance requirement.

Inspect the hood, face seal and breathing system

Where the design allows visual examination without compromising the factory pack, inspect the hood, neck seal, visor and breathing hose for deterioration. The visor should be clear enough to support safe escape, while the hood material must be free from tears, hardening, stickiness and chemical contamination.

Check hoses for crushing, kinks, abrasion and insecure connections. Pay close attention to connection points at the cylinder, regulator, hood and demand or constant-flow unit. A damaged hose may not be obvious during storage, but it can restrict airflow when the apparatus is activated.

For units with an internal mouthpiece, nose clip or facepiece arrangement, confirm that the components are present, clean and correctly stowed. Missing or poorly packed parts create delay at precisely the moment when the wearer has least time to interpret instructions.

Verify straps, harnesses and operating instructions

Inspect shoulder straps, waist belts, buckles and adjustment points for cuts, fraying, corrosion and stiffness. Escape equipment must fit users rapidly over ordinary workwear and, where applicable, over immersion suits or other emergency PPE. A strap that slips, jams or cannot be adjusted is a functional defect.

Make sure donning instructions are present, legible and appropriate to the actual equipment. In mixed fleets or multi-site facilities, similar-looking sets may have different activation sequences. Clear instructions reduce the risk of a wearer attempting to don the hood before activating air supply, or inadvertently damaging the unit during use.

Functional testing needs control

Functional tests should be completed only by trained, authorised personnel using the manufacturer’s specified method and test equipment. These checks may include leak testing, low-pressure warning verification, flow testing, regulator performance checks and cylinder-pressure confirmation. The exact scope depends on the escape set design and the service interval.

Do not use an emergency set for informal demonstrations or breathing trials. Training should use dedicated training units or equipment returned to service through the full approved process. Once an escape set has been activated, deployed or exposed to smoke, chemicals, water ingress or impact, treat it as used equipment until it has been inspected and serviced by a competent person.

Common reasons to remove an escape set from service

A simple quarantine decision protects the wider emergency readiness programme. Remove the set from its operational location when there is a broken tamper seal with no documented explanation, inadequate cylinder pressure, an overdue service or test date, physical damage, contamination, illegible instructions or a missing component.

The same approach applies where storage conditions have been compromised. A set recovered from a flooded locker, an area affected by fire suppression discharge, or a space with prolonged chemical vapour exposure should not be accepted on the basis of a visual check alone. Arrange assessment by an approved service provider and install a replacement without delay.

Make inspection part of emergency readiness

Inspection frequency should reflect the manufacturer’s instructions and operating risk. A controlled, clean facility may rely on scheduled monthly visual checks with formal service intervals, whereas marine, drilling and offshore environments often justify more frequent location checks because vibration, salt air, weather exposure and changing work fronts increase the chance of damage or displacement.

The inspection record should identify the asset, location, date, inspector, cylinder pressure where applicable, observed condition, corrective action and next due date. Trend recurring failures. For example, repeated damaged cabinet catches may indicate a location problem, while repeated low-pressure findings may point to handling, leakage or weak service control.

SFRM supports industrial teams with safety and rescue equipment sourcing aligned to real operating requirements, including the specification, availability and lifecycle considerations that affect emergency preparedness. The right escape set is only part of the solution; its location, inspection discipline and replacement plan determine whether it is ready when conditions deteriorate.

Treat every inspection as a check of the evacuation system, not merely an item of PPE. When equipment is correctly specified, protected, recorded and checked by competent people, crews can focus on the one task escape equipment is intended to support: getting safely to breathable air.