A Manual of Recommended Practice on Assessment of Health Risks Arising from the Use of Chemicals Hazardous to Health at the Workplace - Corrigenda - Chapter 1 to Chapter 10

Q: What changes are documented in the corrigenda section?

The corrigenda lists specific textual and data updates made since the original publication was printed, spanning multiple chapters and figures.

Q: What was corrected in the inhalation hazard rating table update?

The corrigenda replaces the inhalation hazard rating table (Table 1) with revised content linking health effects, hazard classifications, H-codes, and acute toxicity data.

Q: Which programme and figure elements were revised for medical surveillance and exposure monitoring?

The corrigenda updates exposure monitoring figure labels and adds “/BEL,” and replaces the medical surveillance figure while removing a note labeled “EM: Exposure monitoring.”

Sep 21, 2026

Upload by Cart

Corrigenda updates a manual on assessing health risks from workplace chemicals hazardous to health, covering changes introduced since the original print version. Revisions include corrections to scope wording, replacement of inhalation hazard rating tables, amendments to specific hazard classifications for chemicals such as diquat, and updates to HR values derived from acute toxicity and hazard classification data. Additional edits adjust control measures terminology, exposure monitoring figure labels, medical surveillance programme figures and notes, and training requirements.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages6

Reading Time15 min

AccessFree to download

Corrigenda

Chapter 1: Introduction

Chapter 4: Determine Degree of Hazard

Chapter 7: Control Measures

Chapter 8: Exposure Monitoring Programme

Chapter 9: Medical Surveillance Programme

Chapter 10: Conclude, Recommend and Prioritise

A Manual of Recommended Practice on Assessment of Health Risks Arising from the Use of Chemicals Hazardous to Health at the Workplace 3 rd Edition (2017) CORRIGENDA The following list provides a description of the changes made to the publication since the original version was printed. Chapter 1: INTRODUCTION 1. Page 10, 1.1 SCOPE, first paragraph second sentence b): Delete “2013” after “CLASS Regulations”Chapter 4: DETERMINE DEGREE OF HAZARD 2. Page 27, [4.2.1.1](4.2.1.1) Hazard rating – inhalation Replace Table 1 with Table below Table 1: Hazard Rating for Inhalation Exposure Based on Health Effect, Hazard Classification, H-code and Acute Toxicity Data | HR | Health Effects | Hazard Classification | | H-code | Acute toxicity | | --- | --- | --- | --- | --- | --- | | 5 | 􀁸 Injury of sufficient severity to threaten life by single exposure;
􀁸 Causing fatality at low doses or concentration;
􀁸 Severe irreversible effects (damage to target organ e.g. central nervous system effects, kidney necrosis, liver lesions, anaemia or paralysis) after a single exposure;
􀁸 Known to have carcinogenic potential for humans;
􀁸 Known to induce heritable mutations in the germ cells of humans;
􀁸 Known human reproductive toxicant | Acute toxicity
category 1 (inhalation) | | H330 | LC50 ≤ 0.5 mg/l (vapours)
LC50 ≤ 100 ppmV (gases)
LC50 ≤ 0.05 mg/l (dusts/mists) | | | | Carcinogenicity category 1A | | H350, H350i | | | | | Mutagenicity category 1A | | H340 | | | | | Reproductive toxicity category 1A | | H360,
H360D,
H360F,
H360FD,
H360Fd,
H360Df | | | | | Specific target organ toxicity – single exposure category 1 | | H370 | | | 4 | 􀁸 Injury of sufficient severity to cause permanent | | Acute toxicity
category 2 (inhalation) | H330 | 0.5 < LC50 ≤ 2.0 mg/l (vapours) | | HR | Health Effects | Hazard Classification | | H-code | Acute toxicity | | --- | --- | --- | --- | --- | --- | | | impairment, disfigurement or irreversible change from single or repeated exposure.
􀁸 Very serious physical or health impairment by repeated or prolonged exposure;
􀁸 Serious damage to target organ from single exposure;
􀁸 Presumed to have carcinogenic potential for humans;
􀁸 Chemicals which should be regarded as if they induce heritable mutations in the germ cells of humans;
􀁸 Presumed human reproductive toxicant | Carcinogenicity category 1B | | H350, H350i | 100 < LC50 ≤ 500 ppmV (gases)
0.05 < LC50 ≤ 0.5 mg/l (dusts/mists) | | | | Mutagenicity category 1B | | H340 | | | | | Reproductive toxicity category 1B | | H360,
H360D,
H360F,
H360FD,
H360Fd,
H360Df | | | | | Effects on or via lactation | | H362 | | | | | Specific target organ toxicity – single exposure category 2 | | H371 | | | | | Specific target organ toxicity – repeated exposure category 1 | | H372 | | | | | Respiratory sensitisation category 1 | | H334 | | | 3 | 􀁸 Serious damage to target organ from repeated exposure;
􀁸 Toxic effects after exposure;
􀁸 Suspected human carcinogens;
􀁸 Chemicals which cause concern for humans owing to the possibility that they may induce heritable mutations in the germ cells of humans;
􀁸 Suspected human reproductive toxicant;
􀁸 Effect to respiratory tract after single exposure. | Acute toxicity
category 3 (inhalation) | | H331 | 2 < LC50 ≤ 10 mg/l (vapours)
500 < LC50 ≤ 2500 ppmV (gases)
0.5 < LC50 ≤ 1 mg/l (dusts/mists) | | | | Carcinogenicity category 2 | | H351 | | | | | Mutagenicity category 2 | | H341 | | | | | Reproductive toxicity category 2 | | H361, H361f,
H361d,
H361fd | | | | | Specific target organ toxicity – repeated exposure category 2 | | H373 | | | | | Specific target organ toxicity – single exposure category 3 (respiratory tract irritation) | | H335 | | | 2 | 􀁸 Reversible effects, not severe enough to cause | | Acute toxicity
category 4 (inhalation) | H332 | 10 < LC50 ≤ 20 mg

FAQs

What changes are documented in the corrigenda section?

The corrigenda lists specific textual and data updates made since the original publication was printed, spanning multiple chapters and figures.

What was corrected in the inhalation hazard rating table update?

The corrigenda replaces the inhalation hazard rating table (Table 1) with revised content linking health effects, hazard classifications, H-codes, and acute toxicity data.

Which programme and figure elements were revised for medical surveillance and exposure monitoring?

The corrigenda updates exposure monitoring figure labels and adds “/BEL,” and replaces the medical surveillance figure while removing a note labeled “EM: Exposure monitoring.”

Sep 21, 2026

Upload by Cart