结果支持但不替代合格人员的评估。
风险矩阵
可能性 ↓ · 严重性 →
—
R = L × S
事故率 (TRIR, LTIFR, DART, 严重性)
—
TRIR = recordable × base / hours · LTIFR = LTI × base / hours · DART = DART × base / hours · SR = days lost × base / hours
暴露小时数
—
H = employees × hours/week × weeks/year
热应力 (WBGT)
—
Indoor: WBGT = 0.7·Tnw + 0.3·Tg · Outdoor: WBGT = 0.7·Tnw + 0.2·Tg + 0.1·Tdb · reference (acclimatised, continuous work, ISO 7243 indicative): light 31 / moderate 28 / heavy 26 °C
每日噪声剂量
—
T(L) = 8 / 2^((L − Lc)/q) · D = 100 × Σ Ci/Ti · LEX,8h = Lc + q·log2(D/100)
人工搬运 (修订版 NIOSH 提举方程)
—
RWL = 23 × (25/H) × (1 − 0.003|V − 75|) × (0.82 + 4.5/D) × (1 − 0.0032A) × FM × CM · LI = load / RWL (FM shown for ≤1 h duration, V < 75 cm)