Broco Underwater Wet Welding

SECTION 2: Hazards identification

1272/2008 This section covers the materials from which this product is manufactured. The fumes and gases produced during welding with normal use of this product are also addressed in Section 8.

Hazard statements

Solid metallic products are generally classified as "articles" and do not constitute hazardous materials in solid form WELDING WITH BROCO UNDERWATER WELDING ELECTRODES CAUSES FUMES TO BE RELEASED. MAY BE HARMFUL IF INHALED. MAY IRRITATE THE EYES, SKIN, AND RESPIRATORY TRACT. ARC RAYS CAN DAMAGE EYES AND SKIN. MOLTEN MATERIAL MAY CAUSE THERMAL BURNS. ELECTRIC SHOCK CAN KILL. When used as intended underwater in conjunction with an electric arc from a welding power source, intense heat, ultra-violet (UV) rays, fumes and gases are generated. When used as intended for underwater welding, exposure to UV rays and electric shock possibility are the greatest sources of risk to health of the operator. Fumes and gases may be trapped in bubbles and rise to the water’s surface where they are released into the atmosphere. Personnel at the surface must take precautions to ensure the area is adequately ventilated and to wear appropriate respiratory equipment when necessary. Page | 1 (continued) EMERGENCY OVERVIEW Effects of Over-exposure: Electric arc welding may create one or more of the following health hazards: FUMES AND GASES can be dangerous to your health. SHORT-TERM (acute) OVEREXPOSURE to welding fumes may result in discomfort, such as dizziness, nausea, or dryness or irritation of nose, throat, or eyes. LONG-TERM (chronic) OVEREXPOSURE to welding fumes can lead to siderosis (iron deposits in lungs), central nervous system, liver or kidney damage, skin and respiratory sensitization (allergic reaction), and is believed by some investigators to affect pulmonary function.

2.1 Classification of the substance or mixture

Inert, non-hazardous as supplied. No hazard exists until this product is used in welding.

Principle Routes of Exposure

is the respiratory system

Medical Conditions Generally Aggravated by Exposure

Pre-existing eye, respiratory or allergic conditions ARC RAYS can injure eyes and burn skin. ELECTRIC SHOCK can kill. CARCINOGENICITY: Certain hexavalent chromium compounds and nickel metal and compounds are listed in the National Toxicology Program (NTP) Annual Report on Carcinogens, found to be a potential carcinogen in the International Agency for Research on Cancer (IARC) Monographs, or listed by OSHA/ACGIH as potential carcinogens. Sparks and fumes are produced from welding. Inhalation of fumes may cause metal-fume fever. Avoid breathing dust/fume/gas/mist/vapors/spray Wear protective gloves/protective clothing/eye protection In case of contact with eyes, rinse immediately with plenty of water and seek medical attention In case of insufficient ventilation, wear suitable respiratory equipment Avoid surrounding combustibles (electric arc welding generates sparks) Sparks, splatter and molten material generated by this process can cause fire, severe property damage, and bodily injury. Arc rays (UV) and splatter can injure eyes and exposed skin. Always wear proper eye protection with appropriate shade filter. Exposure to UV radiation from a cutting arc can result in keratoconjunctivitis (welders flash). Symptoms include inflammation, blurred vision and headache. Seek medical attention, preferably an eye specialist. Coatings and residue may irritate skin and eyes. Wash hands thoroughly with soap and water after handling. Allergies. Skin disorders. Respiratory disorders. Central nervous system. Pre-existing eye disorders. Blood disorders. Kidney disorders. Liver disorders. Nasal cavities. Lungs. Welding releases hazardous fumes. Overexposure to metal fumes may cause pulmonary edema (fluid in the lungs) and methemaglobinemia. May also cause pulmonary fibrosis and lung cancer. Lead compounds may be absorbed by ingestion, by inhalation and through the skin. Lead may damage kidney function, the blood forming system and the reproductive system. Inorganic lead compounds can cause developmental damage. Welding fumes and gases cannot be classified simply. The composition and quantity of both are dependent upon the metal being welded, the process, procedures, and electrodes used. The following are typical constituents of welding fumes and gases. When the electrode is consumed, the fume and gas decomposition products generated are different in percent and form than ingredients listed above. Decomposition products of normal operation include those originating from the volatilization reaction, or oxidation of the materials shown above, plus those from the base metal and coating, etc. which may include paint, plating, galvanizing, or phosphate coatings on steels which would produce phosphine gas and other contaminants in the atmosphere (such as chlorinated hydrocarbon vapors from cleaning and degreasing activities which may be decomposed by the arc into toxic gases such as phosgene). It is understood, however, that the elements and or oxides to be mentioned are virtually always present as complex oxides and not as metals. (Characterization of Arc Welding Fume: American Welding Society). The elements or oxides listed here correspond to the ACGIH categories located in TLV (Threshold Limit Values for Chemical Substances and Physical Agents in the Workroom Environment). Reasonably expected constituents of the fume would include complex oxides or compounds of iron, manganese, titanium, silicon, silica, molybdenum, amorphous silica fume, calcium oxide, aluminum, chromium, fluorspar or fluorides, nickel, strontium, potassium, and sodium. Gaseous reaction products may include carbon monoxide and carbon dioxide. Ozone and nitrogen oxides may be formed by the radiation from the arc. One recommended way to determine the composition and quantity of fumes and gases to which workers are exposed is to take an air sample inside the welder’s helmet if worn or in the worker’s breathing zone. (See ANSI / AWS F1.1, available from the American Welding Society, 550 N.W. LeJeune Rd., Miami, FL 33126. Also, from AWS is F1.3 “Evaluating Contaminants in the Welding Environment – A Sampling Strategy Guide”, which gives additional advice on sampling). At a minimum, materials listed in this section should be analyzed. When underwater welding is taking place it may be advisable to collect air samples near the water’s surface where fumes are released into the atmosphere if bystanders are in a close proximity. Page | 2 (continued) Hazardous Regulatory Hazard Classification/Designation Ingredient CAS EINECSΓ

67/548/EEC

IARCΕ NTPΖ OSHAΗ 65Θ ALUMINUM 7429-90-5 231-072-3 F – R10, R15, R17 --- ALUMINUM OXIDE 1344-28-1 215-691-6 None --- CALCIUM CARBONATE 1317-65-3 215-279-6 None --- CALCIUM FLUORIDE 7789-75-5 232-188-7 Xn - R20/22 --- CELLULOSE 9004-34-6 232-674-9 None --- CHROMIUM 7440-47-3 231-157-5 O - R9; Carc 1Φ - R45; Muta 2 - R46; 1ΣΣ, 3Σ KΣΣ XΣΣ Repr 3 - R62; T+ - R26; T - R24/25, R48/23; C - R35, R42/43; N - R50, R53ΣΣΣ COLUMBIUM 7440-03-1 231-113-5 None --- COPPER 7440-50-8 231-159-6 None --- FLUORSPAR 7789-75-5 232-188-7 None --- IRON 7439-89-6 231-096-4 None --- MAGNESIUM CARBONATE 546-93-0 208-915-9 None --- MANGANESE 7439-96-5 231-105-1 Xn - R20/22Y --- MICA 12001-26-2 None --- MOLYBDENUM 7439-98-7 231-107-2 Xn - R48/20/22; Xi - R36/37Χ --- NICKEL 7440-02-0 231-111-4 Carc 3Φ - R40; T - R43, R48/23 1 K X PARAFFIN WAX 8002-74-2 232-315-6 None --- POTASSIUM 7440-09-7 231-119-8 F – R14/15, R14; C – R34 --- POTASSIUM OXIDE 12136-45-7 235-227-6 None --- PROPRIETARY MATERIAL TRADE SECRET SILICA 14808-60-7 238-878-4 Xn - R48/20, R40/20 1Ψ K X (Amorphous Silica Fume) 69012-64-2 273-761-5 None 3 K --- X SILICON 7440-21-3 231-130-8 None --- SODIUM 7440-23-5 231-132-9 F – R14/15, R14; C – R34 --- SODIUM ALUMINUM FLUORIDE 15096-52-3 239-148-8 XN – R20/22; T – R48/23/25; N – R51/53 --- SODIUM FLUORIDE 7681-49-4 231-667-8 T-R25, Xi – R36/38 --- SODIUM OXIDE 1313-59-3 215-208-9 None --- TITANIUM DIOXIDE 13463-67-7 236-675-5 None 2B --- TUNGSTEN 7440-33-7 231-143-9 None --- ZIRCONIUM 7440-67-7 231-176-9 F – R15, R17 --- Γ – European INventory of Existing Chemical Substances Number Δ - European Union Directive 67/548/EEC – Annex 1 Ε – International Agency for Research on Cancer (1 – Human Carcinogen, 2A – Probably Carcinogenic to Humans, 2B – Possibly Carcinogenic to Humans, 3 – Unclassifiable as to Carcinogenicity in Humans, 4 Probably Not Carcinogenic to Humans) Ζ – US National Toxicology Program (K – Known Carcinogen, S – Annex I Σ – Metal and Chromium III Compounds ΣΣ – Chromium VI Compounds ΣΣΣ – Chromium (VI) Trioxide EU 67/548/EEC Classification/Designation Y – Manganese Dioxide EU 67/548/EEC Classification/Designation X – Molybdenum Trioxide EU 67/548/EEC Classification/Designation Ψ – Silica Crystalline α‐Quartz