The 1986 edition of IS 11769 Part 3 outlines detailed procedures for the safe handling, utilization, and disposal of asbestos products excluding cement and friction materials. It aims to assist industries and personnel in mitigating asbestos dust exposure by prescribing best practices for cutting, packaging, and waste management. This standard is crucial for engineers, safety supervisors, and manufacturers involved with asbestos cloth, rope lagging, and millboard to uphold safety and regulatory standards.
Overview
The 1986 edition of IS 11769 Part 3 outlines detailed procedures for the safe handling, utilization, and disposal of asbestos products excluding cement and friction materials. It aims to assist industries and personnel in mitigating asbestos dust exposure by prescribing best practices for cutting, packaging, and waste management. This standard is crucial for engineers, safety supervisors, and manufacturers involved with asbestos cloth, rope lagging, and millboard to uphold safety and regulatory standards.
Audience
Contents
Structure
This section defines the scope of IS 11769 Part 3, which addresses the secure handling and usage of asbestos-containing products other than cement and friction materials. It focuses on preventing the release of hazardous asbestos fibers during processing and use. The Safety Rules Sheet mandated for each product must include product identification, manufacturer information, health hazard warnings related to asbestos dust inhalation, handling guidelines, cleaning and disposal instructions, and personal protective equipment (PPE) recommendations. The standard is harmonized with the International Labour Organization's Codes of Practice (1984) and relevant provisions of the Indian Factories Act. SI units are employed for all physical measurements.
This segment details the mandatory Safety Rules Sheet contents for asbestos products, emphasizing standardized units and terminology. It specifies the inclusion of product designation, manufacturer details, health hazards, handling guidelines, cleaning and disposal protocols, and PPE usage. The International System of Units (SI) is adopted for consistent measurement, covering length (meter), mass (kilogram), time (second), force (newton), energy (joule), power (watt), pressure and stress (pascal), electric current (ampere), temperature (kelvin), and plane angle (radian). Compliance with these units ensures uniform reporting and enhances clarity in safety documentation.
This section provides key definitions relevant to asbestos product safety and handling, focusing on the components of the Safety Rules Sheet: product designation (clear identification), manufacturer information, health hazards from asbestos fiber inhalation, precautionary handling measures, waste management procedures, and requirements for personal protective equipment (respirators, protective apparel). SI units and symbols are reiterated for precision. The emphasis is on communicating health risks and safe practices rather than structural design specifics.
This chapter outlines principal safety measures for managing asbestos products excluding cement and friction types. It recommends minimizing fiber release by employing wetting techniques or local exhaust ventilation, mandating use of PPE such as respirators and protective garments, enforcing strict workplace hygiene including prohibitions on eating and smoking in asbestos areas, and ensuring adequate training and supervision. Packaging and transport require sealed, labeled containers, with waste disposed of at approved landfill sites. Avoidance of product breakage reduces dust generation.
This part prescribes the manufacturing processes for asbestos cloth and related protective materials. It includes selection of fiber quality, controlled weaving and bonding, impregnation with protective binders, and finishing steps ensuring durability and fire resistance. Product-specific parameters such as fiber length, weight, thickness, tensile strength, and non-combustibility are detailed. Safety guidelines highlight the necessity of PPE use and dust control during handling.
This section covers the safe use of asbestos rope lagging, emphasizing mandatory protective clothing and respiratory equipment. It mandates use of specially treated lagging to reduce dust emissions and specifies storage in impermeable bags to prevent contamination. Additional best practices include gentle handling to avoid fiber release, use of wetting agents during cutting, and adherence to hazardous waste disposal protocols.
This segment describes the safe use of asbestos millboard, focusing on dust emission reduction through use of specially treated products. It recommends isolating work areas during extensive rope lagging operations and enforcing respiratory protection. Specifications for typical thickness, density, and thermal properties are provided. Proper storage to avoid moisture and mechanical damage is emphasized.
This chapter details recommended methods for cutting asbestos materials using electrically powered rotary knives with dust extraction. Shearing and slitting are preferred over sawing or grinding unless effective dust control is present. Handling of cloth involves unrolling on bracket-mounted mandrels rather than pulling from free-standing rolls. Removal of old gaskets should employ hand tools after water soaking to minimize dust, with no special precautions required for fitting new gaskets.
This section specifies that asbestos waste must not accumulate on floors, recommending vacuum cleaning with suitable equipment or thorough wetting before removal when vacuuming is unfeasible. Waste is to be sealed in impermeable bags and disposed of per IS 11768-1986. Special care is advised when handling brittle asbestos materials exposed to heat, including damping prior to removal to reduce dust.
This portion mandates that asbestos products such as cloth, rope lagging, and millboard carry clear pictorial warning signs and precautionary notices highlighting the health risks of asbestos dust inhalation. While the Indian Standard for pictorial signs is under preparation, interim signs agreed upon by involved parties may be used. Safety Rules Sheets must accompany products detailing health hazards, handling instructions, and PPE recommendations.
This final section elaborates on the Safety Rules Sheet that must accompany asbestos products, listing product designation, manufacturer details, health hazard information related to asbestos dust inhalation, handling precautions to limit fiber release, cleaning and disposal procedures, and PPE requirements. It references compliance with ILO Codes of Practice (1984) and the Factories Act provisions, ensuring worker safety and environmental protection.
Frequently Asked
IS 11769 Part 3 advises using shears, guillotine-type cutters, or mechanical cutting tools for asbestos cloth to ensure clean cuts without tearing or fraying. Rotary cutters, sabre saws, or abrasive tools should only be used if equipped with effective dust extraction systems. For asbestos rope lagging, treated materials that reduce dust emission are preferred, applying the same cutting precautions as for cloth. Protective clothing and respiratory gear are essential during cutting to prevent inhalation of asbestos fibers.
Asbestos waste must be securely sealed in impermeable bags to prevent fiber escape and disposed of in accordance with IS 11768-1986 regulations governing hazardous waste. Prior to removal, especially of brittle materials affected by heat, dampening the asbestos reduces dust emissions. Waste accumulation on floors is prohibited, and cleaning should be conducted using vacuum cleaners or wet methods to minimize airborne asbestos fibers. Warning signage must be used to alert handlers to health hazards.
When working with non-cement asbestos products such as cloth, rope lagging, and millboard, IS 11769 Part 3 mandates the use of respiratory protection and protective clothing, particularly in enclosed spaces or areas generating airborne fibers. The use of portable air extraction systems may reduce PPE requirements if dust levels are controlled within permissible exposure limits. Proper PPE is essential to safeguard workers from inhalation and skin contact with asbestos dust.
Packaging of asbestos products like cloth, rope lagging, and millboard must include pictorial warning signs and precautionary notices that clearly communicate the presence of asbestos and associated health risks from dust inhalation. Labels should comply with Indian Standards for pictorial signage when available, or interim mutually agreed signs. Each product must also be accompanied by a Safety Rules Sheet outlining safe handling, cleaning, disposal procedures, and PPE recommendations to ensure proper user awareness and protection.
To maintain safety, cleaning of asbestos work areas should be performed regularly using vacuum cleaners equipped with HEPA filters designed for asbestos dust. When vacuuming is impractical, wet sweeping or thorough wetting of dust and waste is recommended to reduce airborne fibers. Dry sweeping or compressed air cleaning is forbidden due to the risk of dispersing hazardous asbestos particles. All cleaning residues must be disposed of safely in sealed containers, and workers should wear appropriate PPE during cleaning.
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