Toolbox on using oxy acetylene torch for blowing holes in sheet pile

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# Fuel gas and oxygen manifolds. (cont.) - 1926.350(f)(3) All hose in use, carrying acetylene, oxygen, natural or manufactured fuel gas, or any gas or substance which may ignite or enter into combustion, or be in any way harmful to employees, shall be inspected at the beginning of each working shift. Defective hose shall be removed from service. - 1926.350(f)(4) Hose which has been subject to flashback, or which shows evidence of severe wear or damage, shall be tested to twice the normal pressure to which it is subject, but in no case less than 300 p.s.i. Defective hose, or hose in doubtful condition, shall not be used. - 1926.350(f)(5) Hose couplings shall be of the type that cannot be unlocked or disconnected by means of a straight pull without rotary motion. - 1926.350(f)(6) - Boxes used for the storage of gas hose shall be ventilated. - 1926.350(f)(7) - Hoses, cables, and other equipment shall be kept clear of passageways, ladders and stairs. - 1926.350(g) - Torches. - 1926.350(g)(1) Clogged torch tip openings shall be cleaned with suitable cleaning wires, drills, or other devices designed for such purpose. - 1926.350(g)(2) Torches in use shall be inspected at the beginning of each working shift for leaking shutoff valves, hose couplings, and tip connections. Defective torches shall not be used. - 1926.350(g)(3) Torches shall be lighted by friction lighters or other approved devices, and not by matches or from hot work. - 1926.350(h) Regulators and gauges. Oxygen and fuel gas pressure regulators, including their related

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# Acetylene, dissolved (cont.) ## GHS US labeling (cont.) Linde # Acetylene, dissolved PRAXAIR # Safety Data Sheet P-4559 This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1979 Revision date: 01/19/2021 Supersedes: 10/13/2016 Version: 1.0 <table><tr><th></th><th>P381 - Eliminate all ignition sources if safe to do so. P501 - Dispose of contents/container in accordance with container Supplier/owner instructions CGA-PG05 - Use a back flow preventive device in the piping. CGA-PG06 - Close valve after each use and when empty. CGA-PG10 - Use only with equipment rated for cylinder pressure. CGA-PG12 - Do not open valve until connected to equipment prepared for use. CGA-PG20 - Use only with equipment of compatible materials of construction and rated for cylinder pressure. CGA-PG13 - Fusible plugs in the top, bottom, or valve melt at 98 °C to 107 °C (208 °F to 224 °F). Do not discharge at pressures above 15 psig (103 kPa). CGA-PG11 - Never put cylinders into unventilated areas of passenger vehicles. CGA-PG02 - Protect from sunlight when ambient temperature exceeds 52°C (125°F). P304, P340, P313 - IF INHALED: Remove person to fresh air and keep comfortable for breathing. Get medical advice/attention.</th></tr><tr><td>2.3. Other hazards</td><td></td></tr><tr><td>Other hazards which do not result in classification</td><td>For safety reasons, the acetylene is dissolved in acetone (CAS # 67-64-1; Flam. Liq. 2, Eye Irrit. 2, STOT SE 3) in the gas container. Vapor of the solvent is carried away as impurity when the acetylene is extracted from the gas container. The concentration of the solvent vapor in the gas is lower than the concentration limits to change the classification of the acetylene.</td></tr><tr><td>2.4. Unknown acute toxicity (GHS US)</td><td></td></tr><tr><td></td><td>No data available</td></tr></table> ## SECTION 3: Composition/Information on ingredients 3.1. Substances <table><tr><th>Name</th>…

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U.S. DEPARTMENT OF LABOR # Occupational Safety and Health Administration - Part Number: 1910 - Part Number - Title: Occupational Safety and Health Standards - Subpart: 1910 Subpart Q - Subpart Title: Welding, Cutting and Brazing Standard - Number: - 1910.253 - Title: Oxygen-fuel gas welding and cutting. - GPO Source: e-CFR 1910.253(a) General requirements- 1910.253(a)(1) Flammable mixture. Mixtures of fuel gases and air or oxygen may be explosive and shall be guarded against. No device or attachment facilitating or permitting mixtures of air or oxygen with flammable gases prior to consumption, except at the burner or in a standard torch, shall be allowed unless approved for the purpose. - 1910.253(a)(2) Maximum pressure. Under no condition shall acetylene be generated, piped (except in approved cylinder manifolds) or utilized at a pressure in excess of 15 psig (103 kPa gauge pressure) or 30 psia (206 kPa absolute). The 30 psia (206 kPa absolute) limit is intended to prevent unsafe use of acetylene in pressurized chambers such as caissons, underground excavations or tunnel construction.) This requirement is not intended to apply to storage of acetylene dissolved in a suitable solvent in cylinders manufactured and maintained according to U.S. Department of Transportation requirements, or to acetylene for chemical use. The use of liquid acetylene shall be prohibited. 1910.253(a)(3) Submit Feedback

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# Acetylene, dissolved (cont.) Linde # Acetylene, dissolved Safety Data Sheet P-4559 PRAXAIR This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1979 Revision date: 01/19/2021 Supersedes: 10/13/2016 Version: 1.0 <table><tr><th colspan="2">SECTION 16: Other information</th></tr><tr><td>Other information</td><td>When using this product in welding and cutting, read and understand the manufacturer's instructions and the precautionary label on the product. Ask your welding products supplier for a copy of Praxair's free safety booklet, P-2035, Precautions and Safe Practices for Gas Welding, Cutting, and Heating, and for other manufacturers' safety publications. For a detailed treatment, get ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes, published by the American Welding Society (AWS), www.aws.org. Order AWS documents from Global Engineering Documents, global.ihs.com. Arcs and sparks can ignite combustible materials. Prevent fires. Refer to NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hotwork. Do not strike an arc on the container. The defect produced by an arc burn may lead to container rupture. Fumes and gases produced during welding and cutting processes can be dangerous to your health and may cause serious lung disease. KEEP YOUR HEAD OUT OF FUMES. DO NOT BREATHE FUMES AND GASES. Use enough ventilation, local exhaust, or both to keep fumes and gases from your breathing zone and the general area. Short-term overexposure to fumes may cause dizziness, nausea, and dryness or irritation of the nose, throat, and eyes; or may cause other similar discomfort. Contaminants in the air may add to the hazard of fumes and gases. When you mix two or more chemicals, you can create additional, unexpected hazards. Obtain and evaluate the safety information for each component before you produce the mixture. Consult an industrial hygienist or other trained person when you eval…

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This information is provided free of charge by the Department of Industrial Relations from its web site at www.dir.ca.gov. These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at https://www.dir.ca.gov/od_pub/disclaimer.html Subchapter 4. Construction Safety Orders Article 32. Oxygen, Acetylene, and Fuel Gas Return to index New query ## §1743. General Precautions. (a) No device or attachment facilitating or permitting mixture of air or oxygen with combustible gases prior to consumption, except at the burner or in a standard torch or blowpipe, shall be allowed unless approved for the purpose. (b) Acetylene shall not be generated or utilized at a pressure in excess of 15 pounds per square inch gauge pressure. - EXCEPTION: Acetylene dissolved in suitable solvent and stored in cylinders manufactured according to Interstate Commerce Commission requirements. (c) Oxygen cylinders and fittings shall be kept away from oil or grease. Cylinders, cylinder caps and valves, couplings, regulators, hose, and apparatus shall be kept free from oil or greasy substances and shall not be handled with oily hands or gloves. Oxygen shall not be directed at oily surfaces, greasy clothes, or within a fuel oil or other storage tank or vessel. (d) Hose piping systems, apparatus, and fittings shall not be used. (e) Oxygen shall never be used from a cylinder or cylinder manifold unless a pressure-reducing device intended for use with oxygen, and so marked, is provided. (f) Acetylene shall never be brought into contact with unalloyed copper except in a blowpipe or torch. (g) Cylinders not having fixed hand wheels shall have keys, handles or nonadjustable wrenches on valve stems while these cylinders are in service. In multiple cylinder installations only one key or handle is required for each manifold. (h) Cylinders shall never be used as rollers or supports whether full or empt…

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# Acetylene, dissolved (cont.) ## 8.2. Exposure controls (cont.) Linde # Acetylene, dissolved PRAXAIR # Safety Data Sheet P-4559 This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1979 Revision date: 01/19/2021 Supersedes: 10/13/2016 Version: 1.0 <table><tr><th>Skin and body protection</th><th>: As needed for welding, wear hand, head, and body protection to help prevent injury from radiation and sparks. (See ANSI Z49.1.) At a minimum, this includes welder's gloves and protective goggles, and may include arm protectors, aprons, hats, and shoulder protection as well as substantial clothing.</th></tr><tr><td>Respiratory protection</td><td>: When workplace conditions warrant respirator use, follow a respiratory protection program that meets OSHA 29 CFR 1910.134, ANSI Z88.2, or MSHA 30 CFR 72.710 (where applicable). Use an air-supplied or air-purifying cartridge if the action level is exceeded. Ensure that the respirator has the appropriate protection factor for the exposure level. If cartridge type respirators are used, the cartridge must be appropriate for the chemical exposure. For emergencies or instances with unknown exposure levels, use a self-contained breathing apparatus (SCBA).</td></tr><tr><td>Thermal hazard protection</td><td>: Wear cold insulating gloves when transfilling or breaking transfer connections.</td></tr><tr><td>Environmental exposure controls</td><td>: Refer to local regulations for restriction of emissions to the atmosphere. See section 13 for specific methods for waste gas treatment.</td></tr><tr><td>Other information</td><td>: Consider the use of flame resistant anti-static safety clothing. Wear leather safety gloves and safety shoes when handling cylinders.</td></tr></table> ## SECTION 9: Physical and chemical properties <table><tr><th colspan="2">9.1. Information on basic physical and chemical properties</th></tr><tr><td>Physical state</td><td>: Gas</td></tr><tr><td>Appear…

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# Lead in Construction Information for Employers (cont.) ## Level 2 Trigger Tasks: [1532.1(d)(2)(C)] (cont.) • Where lead-containing coatings or paint are present: ○ Manual sanding. ○ Power tool cleaning, grinding, or sanding with dust collection systems. • Spray painting with lead paint. ## Level 3 Trigger Tasks: [1532.1(d)(2)(D)] Assume employee exposure is more than 50 times the PEL (500 µg/m³). • Using lead-containing mortar or lead burning. • Where lead-containing coatings or paint are present: ○ Rivet busting. 。 Power tool cleaning, grinding, or sanding without dust collection systems. • Cleanup activities where dry expendable abrasives are used. . Abrasive blasting enclosure movement and removal. • Abrasive blasting. • Welding. . Torch cutting. • Torch burning. ## Written, up-to-date compliance program and pre-job notifications Before the job begins, employers must establish and implement a written compliance program that meets section 1532.1(e)(2) requirements, including a description of arrangements made among contractors on multi-contractor sites to inform affected employees of potential exposure to lead and regulated areas. In addition, a written Pre- Job Notification must be provided to the nearest Cal/OSHA office within 24 hours of the start of the work, as required by section 1532.1(p). ## Resources ## Cal/OSHA • Lead in Construction webpage • Title 8 Section 1532.1 • Publications ## OSHA • Lead in Construction Guide • Lead in Construction Quick Card • Protecting Workers from Lead Hazards Fact Sheet California Department of Public Health, Occupational Lead Poisoning Prevention Program ([redacted phone]) Painting and Decorating Contractors of America ([redacted phone]) Society for Protective Coatings ([redacted phone]) US EPA: Lead in Paint, Dust, and Soil (800-424-LEAD) This document is available with active links at www.dir.ca.gov/dosh/dosh_publications For assistance regarding this subject matter, employers ma…

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# [redacted phone] Adoption by Reference (cont.) ## [redacted phone] Compressed Gases (General Requirements) (cont.) Flammable Liquids H Oregon Occupational Safety and Health Division Oregon Administrative Rules AO 3-2019 Division 2 (iv) Attach the cylinder to a pressure reducing regulator or blow back manifold before opening the cylinder valve. (v) Remove pressure regulators before moving cylinders unless they are secured in an upright position on a cylinder cart. (vi) Back out regulator adjusting screws before opening cylinder valves. (vii) Protect cylinders from contact with welding spatters and cutting or burning slag. (viii) Install reverse flow check valves and flashback arresters according to manufacturer recommendation. (B) You must not: (i) Drop cylinders. (ii) Drag cylinders. (iii) Apply a torch to the side of a cylinder. (iv) Hoist cylinders using lifting magnets, slings, ropes, chains, or any other device where the cylinders form a part of the carrier. (v) Handle cylinders so that the bottom fusible metal pressure relief device can strike an object. (vi) Expose any part of your body to the line of discharge of a fusible metal pressure relief device. (vii) Use acetylene at a pressure exceeding 15 psig. (viii) Exceed an acetylene withdrawal rate of one-seventh of the cylinder capacity per hour for welding, cutting, and allied processes. (d) Transporting Acetylene Cylinders (additional requirements). (A) You must protect cylinders and attached regulators: (i) From damage when being transported by any vehicle. (ii) From abnormal mechanical shock that is likely to damage the cylinder, valve, or fusible metal pressure relief device. (B) - You must not transport cylinders in enclosed spaces. (C) You must ensure that cylinders are leak checked prior to each placement into the vehicle. Cylinders left in vehicles overnight must be leak checked at the end of the day and again prior to transporting. [red…

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# Safety Data Sheet P-4559 (cont.) ## SECTION 6: Accidental release measures (cont.) Linde # Acetylene, dissolved Safety Data Sheet P-4559 PRAXAIR This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1979 Revision date: 01/19/2021 Supersedes: 10/13/2016 Version: 1.0 ## SECTION 7: Handling and storage <table><tr><th>7.1. Precautions for safe handling</th><th></th></tr><tr><td>Precautions for safe handling</td><td>Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Use only non-sparking tools. Use only explosion-proof equipment. Wear leather safety gloves and safety shoes when handling cylinders. Protect cylinders from physical damage; do not drag, roll, slide or drop. While moving cylinder, always keep in place removable valve cover. Never attempt to lift a cylinder by its cap; the cap is intended solely to protect the valve. When moving cylinders, even for short distances, use a cart (trolley, hand truck, etc.) designed to transport cylinders. Never insert an object (e.g. wrench, screwdriver, pry bar) into cap openings; doing so may damage the valve and cause a leak. Use an adjustable strap wrench to remove over-tight or rusted caps. Slowly open the valve. If the valve is hard to open, discontinue use and contact your supplier. Close the container valve after each use; keep closed even when empty. Never apply flame or localized heat directly to any part of the container. High temperatures may damage the container and could cause the pressure relief device to fail prematurely, venting the container contents. For other precautions in using this product, see section 16.</td></tr><tr><td colspan="2">7.2. Conditions for safe storage, including any incompatibilities</td></tr><tr><td>Storage conditions Storage area</td><td>Store only where temperature will not exceed 125°F (52°C). Post "No Smoking/No Open Flames" signs in storage and use areas. There must be no…

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Linde # Acetylene, dissolved Safety Data Sheet P-4559 PRAXAIR This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1979 Revision date: 01/19/2021 Supersedes: 10/13/2016 Version: 1.0 <table><tr><th colspan="2">SECTION: 1. Product and company identification</th></tr><tr><td colspan="2">1.1. Product identifier</td></tr><tr><td>Product form</td><td>: Substance</td></tr><tr><td>Trade name</td><td>: Acetylene</td></tr><tr><td>Chemical name</td><td>: Acetylene</td></tr><tr><td>CAS-No.</td><td>: 74-86-2</td></tr><tr><td>Formula</td><td>: C2H2</td></tr><tr><td>Other means of identification</td><td>: Acetylen, ethine, ethyne, narcylene</td></tr><tr><td colspan="2">1.2. Relevant identified uses of the substance or mixture and uses advised against</td></tr><tr><td>Use of the substance/mixture</td><td>: Industrial use; Use as directed.</td></tr><tr><td colspan="2">1.3. Details of the supplier of the safety data sheet</td></tr><tr><td></td><td>Praxair, Inc. [redacted street address] Danbury, CT [redacted identifier] - USA T 1-[redacted phone] (1-800-PRAXAIR) - F 1-[redacted phone] www.praxair.com</td></tr><tr><td colspan="2">1.4. Emergency telephone number</td></tr><tr><td>Emergency number</td><td>: Onsite Emergency: 1-[redacted phone]</td></tr><tr><td></td><td>CHEMTREC, 24hr/day 7days/week - Within USA: 1-[redacted phone], Outside USA: [redacted identifier]-3887 (collect calls accepted, Contract [redacted postal code])</td></tr></table> ## SECTION 2: Hazard identification 2.1. Classification of the substance or mixture ## GHS US classification Simple asphyxiant SIAS Flam. Gas 1 H220 Press. Gas (Diss.) H280 ## 2.2. Label elements ## GHS US labeling Hazard pictograms (GHS US) Signal word (GHS US) Hazard statements (GHS US) : GHS02 GHS04 : Danger This document is only controlled while on the Linde US website and a copy of this controlled version is available for download. Linde cannot assure the integrity…

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# Safety Data Sheet P-4559 (cont.) ## SECTION 5: Firefighting measures (cont.) Linde # Acetylene, dissolved PRAXAIR # Safety Data Sheet P-4559 This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1979 Revision date: 01/19/2021 Supersedes: 10/13/2016 Version: 1.0 ## 5.2. Special hazards arising from the substance or mixture <table><tr><th>Fire hazard</th><th>: EXTREMELY FLAMMABLE GAS. If venting or leaking gas catches fire, do not extinguish flames. Flammable vapors may spread from leak, creating an explosive reignition hazard. Vapors can be ignited by pilot lights, other flames, smoking, sparks, heaters, electrical equipment, static discharge, or other ignition sources at locations distant from product handling point. Explosive atmospheres may linger. Before entering an area, especially a confined area, check the atmosphere with an appropriate device.</th></tr><tr><td>Explosion hazard</td><td>: EXTREMELY FLAMMABLE GAS. Forms explosive mixtures with air and oxidizing agents.</td></tr><tr><td>Reactivity</td><td>: No reactivity hazard other than the effects described in sub-sections below.</td></tr></table> ## 5.3. Advice for firefighters <table><tr><th>Firefighting instructions</th><th>: Evacuate all personnel from the danger area. Use self-contained breathing apparatus (SCBA) and protective clothing. Immediately cool containers with water from maximum distance. Stop flow of gas if safe to do so, while continuing cooling water spray. Remove ignition sources if safe to do so. Remove containers from area of fire if safe to do SO. On-site fire brigades must comply with OSHA 29 CFR 1910.156 and applicable standards under 29 CFR 1910 Subpart L-Fire Protection.</th></tr><tr><td>Protection during firefighting</td><td>: Compressed gas: asphyxiant. Suffocation hazard by lack of oxygen.</td></tr><tr><td>Special protective equipment for fire fighters</td><td>: Standard protective clothing and equipment (Self …