Annex 13 of NR15 – Chemical Agents

1. List of activities and operations involving chemical agents considered hazardous due to inspections conducted at the workplace. This list excludes activities or operations with the chemical agents listed in Annex 11 and Annex 12.

ARSENIC

Maximum unhealthy condition

• Extraction and handling of arsenic and preparation of its compounds.
• Manufacturing and preparation of arsenic-based paints.
• Manufacturing of parasiticides, insecticides, and rodenticides containing arsenic compounds.
• Spray painting with arsenic compound pigments in confined or enclosed spaces.
• Preparation of Secret.
• Production of arsenic trioxide.

Medium unhealthy condition

• Black and green bronzing with arsenic compounds.
• Preservation of skins and feathers; depilation of skins using arsenic compounds.
• Discoloration of glass and crystals using arsenic compounds.
• Use of parasiticides, insecticides, and rodenticides based on arsenic compounds.
• Manufacturing of playing cards, painted papers, and artificial flowers using arsenic compounds.
• Metallurgy of arsenic ores (gold, silver, lead, zinc, nickel, antimony, cobalt, and iron).
• Electroplating operations using arsenic compounds.
• Manual painting (brush, roller, and brush) with arsenic compound pigments in confined or enclosed spaces, except with capillary brushes.

Minimum unhealthy condition

• Animal stuffing using arsenic compounds.
• Manufacturing of tafetta “sire.”
• Spray or manual painting with arsenic compound pigments in open air.

COAL

Maximum unhealthy condition

• Permanent work underground in cutting, drilling, blasting, loading at the blast site, maneuvering activities, transfer points, and tipping points.

Medium unhealthy condition

• Other permanent underground activities such as locomotive operations, conductors, couplers, firefighters, woodworkers, trackmen, and electricians.

Minimum unhealthy condition

• Permanent surface activities in dry operations with crushers, screens, classifiers, loading and unloading silos, conveyor belts, and cable cars.

LEAD

Maximum unhealthy condition

• Manufacturing of lead compounds, carbonate, arsenate, chromate, minium, litharge, and others.
• Manufacturing of enamels, varnishes, colors, pigments, paints, ointments, oils, pastes, liquids, and powders based on lead compounds.
• Manufacturing and restoration of accumulators, batteries, and electric cells containing lead compounds.
• Manufacturing and use of tetraethyl lead and tetramethyl lead.
• Casting and rolling of lead, old zinc, copper, and brass.
• Cleaning, scraping, and repairing mixing tanks, storage tanks, and other tasks with gasoline containing tetraethyl lead.
• Spray painting with lead compound pigments in confined or enclosed spaces.
• Rubber vulcanization using litharge or other lead compounds.

Medium unhealthy condition

• Application and use of enamels, varnishes, colors, pigments, paints, ointments, oils, pastes, liquids, and powders based on lead compounds.
• Manufacturing of porcelain with lead compound enamels.
• Manual painting and decorating (brush, roller, and brush) with lead compound pigments (except capillary brush) in confined or enclosed spaces.
• Dyeing and printing with lead compound pigments.

Minimum unhealthy condition

• Spray or manual painting with lead compound pigments in open air.

CHROMIUM

Maximum unhealthy condition

• Manufacturing of chromates and dichromates.
• Spray painting with chromium compound pigments in confined or enclosed spaces.

Medium unhealthy condition

• Electrolytic chromium plating of metals.
• Manufacturing of phosphorus matches using chromium compounds (preparation of paste and work in dryers).
• Handling of chromates and dichromates.
• Manual painting with chromium compound pigments in confined or enclosed spaces (except capillary brush).
• Photomechanical preparation of printing plates using chromium compounds.
• Chromium tanning.

PHOSPHORUS

Maximum unhealthy condition

• Extraction and preparation of white phosphorus and its compounds.
• Manufacturing of phosphorated and organophosphorated pesticides.
• Manufacturing of incendiary projectiles, explosives, and asphyxiating gases based on white phosphorus.

Medium unhealthy condition

• Use of organophosphorated pesticides.
• Manufacturing of phosphor bronze.
• Manufacturing of phosphorated wicks for miner’s lamps.

HYDROCARBONS AND OTHER CARBON COMPOUNDS

Maximum unhealthy condition

• Coal tar distillation.
• Petroleum distillation.
• Handling of tar, pitch, bitumen, anthracene, mineral oils, used oil, paraffin, or other carcinogenic substances.
• Handling of carbon black. (Excluded by DNSST Ordinance No. 9, dated October 9, 1992)
• Manufacturing of phenols, cresols, naphthols, nitro derivatives, amino derivatives, halogenated derivatives, and other toxic substances derived from cyclic hydrocarbons.
• Spray painting with enamels, paints, varnishes, and solvents containing aromatic hydrocarbons.

Medium unhealthy condition

• Use of organochlorine pesticides: DDT (dichlorodiphenyltrichloroethane), DDD (dichlorodiphenyldichloroethane), methoxychlor (dimethoxydiphenyltrichloroethane), BHC (benzene hexachloride) and their compounds and isomers.
• Use of pesticides derived from carbonic acid.
• Use of amino derivatives of aromatic hydrocarbons (aniline homologs).
• Use of cresol, naphthalene, and toxic derivatives.
• Use of isocyanates in the formation of polyurethanes (release lacquers, double composition lacquers, protective lacquers for wood and metals, special adhesives, and other products based on polyisocyanates and polyurethanes).
• Use of products containing aromatic hydrocarbons as solvents or in cleaning parts.
• Manufacturing of rubber articles, waterproofing products, and waterproof fabrics based on hydrocarbons.
• Manufacturing of linoleum, celluloid, lacquers, paints, enamels, varnishes, solvents, adhesives, ebonite articles, gutta-percha, straw hats, and other products based on hydrocarbons.
• Cleaning parts or engines with diesel oil applied under pressure (nebulization).
• Brush painting with enamels, paints, and varnishes in solvents containing aromatic hydrocarbons.

MERCURY

Maximum unhealthy condition

• Manufacturing and handling of organic mercury compounds.

SILICATES

Maximum unhealthy condition

• Operations generating silicate dust in permanent underground work in mines and tunnels (cutting, drilling, blasting, loading, and other activities at the blast site and underground crushing).
• Extraction, crushing, and grinding of talc.
• Manufacturing of refractory materials, such as refractories for molds, chimneys, and crucibles; recovery of residues.

CARCINOGENIC SUBSTANCES
(Amended by SSST Ordinance No. 14, of December 20, 1995)

For the substances or processes listed below, no exposure or contact by any route is permitted:

• 4-aminodiphenyl (p-xenylamine)
• Benzidine production
• Beta-naphthylamine
• 4-nitrodiphenyl

“No exposure or contact” means sealing the process or operation through the best practicable engineering methods, ensuring that workers are adequately protected and do not come into any contact with the carcinogen. If processes or operations are not sealed, it will be considered a situation of serious and imminent risk to the worker. For Benzene, the provisions of Annex 13-A must be observed.

MISCELLANEOUS OPERATIONS

Maximum unhealthy condition

Operations with cadmium and its compounds: extraction, treatment, preparation of alloys, manufacturing and use of its compounds, welding with cadmium, use in ultraviolet light photography, glass manufacturing, as an antioxidant, in metal coatings, and other products.

Operations with the following substances:

• Bis(chloromethyl) ether
• Benzopyrene
• Beryllium
• Dimethylcarbamoyl chloride
• 3,3′-dichlorobenzidine
• Vinyl cyclohexane dioxide
• Epichlorohydrin
• Hexamethylphosphoramide
• 4,4′-methylenebis(2-chloroaniline)
• 4,4′-methylenedianiline
• Nitrosamines
• Propane sultone
• Beta-propiolactone
• Thallium
• Production of ammonium trioxide roasting nickel sulfide.

Medium unhealthy condition

• Spray application of aluminum paints.
• Manufacturing of aluminum powders (crushing and grinding).
• Manufacturing of emetine and ipecac powder.
• Manufacturing and handling of oxalic, nitric, sulfuric, hydrobromic, phosphoric, and picric acids.
• Spray metalizing.
• Operations with timbo.
• Operations with sugarcane bagasse in phases of high dust exposure.
• Electroplating operations: gold plating, silver plating, nickel plating, chromium plating, zinc plating, copper plating, aluminum anodizing.
• Telegraphy and radio telegraphy, handling Morse-type devices and signal reception in headphones.
• Work with Thomas slag: removal, crushing, grinding, and packaging.
• Work involving dry scraping and burning of paints.
• Work in salt extraction (saltworks).
• Manufacturing and handling of caustic alkalis.

Minimum unhealthy condition

• Manufacturing and transportation of lime and cement in phases of high dust exposure.
• Loading, unloading, or removal of sulfur or sulfites in general, in bags or bulk.