One in Three Recorded Accident Precursors Is Classified as Requiring Institutional Corrective Action: A Third-Party Audit of 135 University Hazardous-Chemical Laboratories

Abstract

Laboratories that use hazardous chemicals accumulate the physical conditions that precede fire, explosion, and toxic release. Safety audits record these accident precursors where they are observed, and the resulting counts are aggregated to evaluate the safety management of the unit in which they were found. That evaluative use assumes a finding recorded in a laboratory reflects the laboratory’s own management. This assumption fails when durable correction requires authority, funding, or technical competence held at a higher organizational level. We analyzed a regulator-commissioned third-party audit of 135 high-risk hazardous-chemical laboratories in 47 colleges across eight Chinese universities. A human-verified workflow decomposed 6152 audit records into 10,044 discrete findings, and experts classified each finding by type (safety management system deficiency versus accident precursor) and by corrective-action responsibility (independent recoding: Fleiss’ kappa = 0.984 and 0.949). Under the study’s corrective-action responsibility rule, 829 of 2346 recorded precursors (35.3%) were classified as requiring institutional maintenance or engineering action for durable correction, and every laboratory contained at least one. Under university fixed effects with college-clustered robust inference, each additional laboratory-level management deficiency was associated with 0.208 more laboratory-responsibility precursors (95% CI [0.100, 0.316]) but not with maintenance-responsibility precursors (0.025, 95% CI [−0.088, 0.138]); the difference (0.183, 95% CI [0.072, 0.294]) persisted after standardization. Audit findings therefore remain valid risk information wherever they are recorded, but their evidential value about the audited unit’s management ends at that unit’s corrective-action authority. Audits should retain location-based records for hazard control and escalation while attributing performance by authority for durable correction.