Nitrogen Tire Inflation System Daily Audit

Daily inspection checklist for nitrogen tire inflation systems, verifying generator purity at 95% minimum, equipment integrity, safety compliance, and operational readiness per OSHA and NFPA standards.

Audit Setup and Inspector Information

• Audit date and time
  Record the exact date and time this audit is being conducted.
• Inspector name and employee ID
  Full name and employee ID of the person conducting this audit.
• Nitrogen generator unit ID / location
  Enter the equipment asset tag number and physical location (e.g., Bay 3, Service Lane A).
• Previous audit deficiencies resolved?
  Confirm all deficiencies noted in the prior daily audit have been corrected or are actively tracked in the corrective action log.

Nitrogen Generator Purity and Output

• Nitrogen purity reading (%)
  Record the purity percentage displayed on the generator's purity analyzer or inline sensor. Minimum acceptable value is 95%. Values below 95% are a critical non-conformance — remove unit from service immediately.
• Purity analyzer / sensor functioning and displaying a live reading
  Confirm the purity display is active, not showing an error code, and has been calibrated within the manufacturer-specified interval.
• Generator output pressure (psi)
  Record the output pressure shown on the generator gauge. Acceptable range is typically 100–150 psi; verify against your unit's nameplate rating.
• Generator power indicator / status light shows normal operation
  Confirm the unit is powered on, no fault or alarm LEDs are illuminated, and the unit is in ready/standby or active state.

Compressed Air Supply and Filtration

• Inlet compressed air pressure within generator's specified feed range (psi)
  Record the inlet air pressure. Most PSA/membrane generators require 90–120 psi feed air. Consult unit nameplate for exact specification.
• Pre-filter element — no visible moisture, oil, or discoloration in sight glass
  Inspect the coalescing pre-filter sight glass or drain bowl. Presence of liquid water or oil indicates filter saturation — replace element before continuing operation.
• Auto-drain on pre-filter actuated and functioning (if equipped)
  Manually trigger the auto-drain test button (if present) and confirm condensate is expelled. A non-functioning drain can saturate the filter and degrade purity.
• Air dryer / desiccant status — no saturation indicator alarm
  Check the desiccant dryer moisture indicator (if equipped). A pink or red indicator means the desiccant is saturated and must be regenerated or replaced.

Hoses, Fittings, and Inflation Equipment

• Inflation hose(s) — no cuts, abrasions, kinks, or bulging along full length
  Visually inspect each inflation hose from the generator outlet to the chuck end. Any cut exposing inner braid, bulge, or severe kink is a critical deficiency — remove hose from service.
• Chuck / inflation valve — seats properly, no audible leak when connected to test port
  Connect the chuck to a capped test valve stem and listen/feel for leakage. A leaking chuck results in inaccurate inflation and nitrogen waste.
• Quick-connect fittings — no visible cracks, corrosion, or missing retaining clips
  Inspect all quick-connect couplings. Missing retaining clips can cause uncontrolled hose separation under pressure (OSHA 29 CFR 1910.169 whip hazard).
• Inflation gauge accuracy verified against calibrated reference gauge (within ±2 psi)
  Compare the inflation gauge reading against a calibrated reference gauge at a known pressure. Gauges out of tolerance by more than ±2 psi must be recalibrated or replaced.

Safety, Signage, and Work Area Compliance

• "Nitrogen — Asphyxiation Hazard" warning sign posted at generator and inflation station
  OSHA 29 CFR 1910.145 requires hazard warning signs where oxygen-displacing gases are used. Confirm signage is legible, undamaged, and visible from the approach direction.
• Area ventilation adequate — no enclosed space with restricted airflow around generator
  Nitrogen is an asphyxiant (OSHA 29 CFR 1910.146 permit-required confined space considerations). Confirm the generator is not operating in a sealed room without ventilation.
• Work area clear of combustibles within 3 feet of generator and hose connections
  Per NFPA 1, compressed gas equipment areas must be kept free of flammable/combustible materials. Inspect a 3-foot radius around the unit.
• Emergency shutoff / isolation valve accessible and unobstructed
  Confirm the main nitrogen supply shutoff valve is clearly labeled, reachable within 10 seconds, and not blocked by equipment or materials.

Deficiencies, Corrective Actions, and Sign-Off

• Total number of deficiencies identified during this audit
  Enter the count of all non-conformances noted. Enter 0 if none.
• Describe each deficiency and assigned corrective action (or enter 'None')
  For each deficiency: state the item, describe the non-conformance, identify the responsible person, and set a target resolution date. Example: 'Pre-filter sight glass shows oil — filter element replaced by J. Smith, 2024-06-10.'
• Unit status at end of audit
  Select the operational status of the nitrogen inflation system following this audit.
• Inspector signature
  By signing, the inspector certifies that all items above were physically verified and that all findings are accurately recorded.