Recommendations for disposal of asbestos waste material

IS 11768: Scope Summary & Key Specifications

Scope (Clause 4.1):

• Applies to definitions as per IS 11451-1986 related to asbestos waste disposal.
• Covers recommendations for safe handling, disposal, and hygiene practices for asbestos waste.

Key Specifications:

• Personal Protection & Hygiene (Clause 11.2):

  • Vehicles, reusable receptacles, and covers contaminated with asbestos must be cleaned using vacuum cleaners or dustless methods to prevent fiber release.

• Units & Measurements:

  • Follows SI Units for all quantities (Length in meters, Mass in kg, Time in seconds, Force in Newtons, Pressure in Pascals, etc.).

Summary Diagram: Asbestos Waste Handling Flow

flowchart TD
    A[Asbestos Waste Generated] --> B[Collection in Receptacles]
    B --> C[Transport in Covered Vehicles]
    C --> D[Cleaning of Vehicles & Receptacles]
    D --> E[Safe Disposal]
    E --> F[Environmental Compliance]

Note: For detailed definitions and handling procedures, refer to IS 11451-1986 and IS 11768 clauses on hygiene and disposal.

IS 11768: General Recommendations Summary

Key References:

• Clause 4.1: Definitions per IS 11451:1986 apply.
• Clause 11.2: Vehicles/reusable receptacles in contact with asbestos waste must be cleaned by vacuum or dustless methods.

General Specifications:

Personal Protection & Hygiene (Clause 11.2):

• Clean vehicles and reusable covers contacting asbestos waste immediately after use.
• Use vacuum cleaners or alternative dustless methods to prevent airborne asbestos fibers.

Additional Notes:

• Follow IS 11451 for asbestos-related definitions.
• Use SI units consistently for measurements.
• Ensure strict hygiene and safety protocols during handling and disposal.

flowchart TD
    A[Asbestos Waste Contact] --> B[Vehicles & Receptacles]
    B --> C[Cleaning Required]
    C --> D{Method}
    D -->|Vacuum Cleaner| E[Safe Disposal]
    D -->|Dustless Alternative| E

This ensures containment and minimizes health hazards during asbestos waste handling.

IS 11768: Application - Key Points & Specifications

• Scope & Definitions: As per Clause 4.1, definitions from IS 11451:1986 apply for asbestos waste disposal.

• Personal Protection: Clause 11.2 mandates cleaning vehicles and reusable receptacles after asbestos contact by vacuum or dustless methods to prevent contamination.

• Units & Quantities: The standard uses SI units for all measurements (length in meters, mass in kg, force in newtons, pressure in pascals, etc.).

• Relevant Units:

• Application: The standard provides guidelines for safe handling, hygiene, and disposal of asbestos waste to minimize health hazards.

Summary Diagram: Application Flow for Asbestos Waste Disposal

flowchart TD
    A[Contact with Asbestos Waste] --> B[Use Vehicles/Receptacles]
    B --> C[Post-Use Cleaning]
    C --> D{Cleaning Method}
    D -->|Vacuum Cleaner| E[Safe Disposal]
    D -->|Alternative Dustless Method| E
    E --> F[Compliance with IS 11768]

Note: For detailed formulas or tables on structural design or material properties, refer to IS 11451 or relevant IS codes, as IS 11768 focuses on disposal recommendations.

IS 11768: Definitions Summary

• Reference for Definitions:
  Clause 4.1 states that definitions used in IS 11768 refer to those in IS 11451:1986.

• Key Units and Quantities (SI Units) used in the Standard:

  Quantity	Unit	Symbol	Definition/Relation
  Length	metre	m	Base unit
  Mass	kilogram	kg	Base unit
  Time	second	s	Base unit
  Force	newton	N	1 N = 1 kg·m/s²
  Energy	joule	J	1 J = 1 N·m
  Power	watt	W	1 W = 1 J/s
  Pressure, Stress	pascal	Pa	1 Pa = 1 N/m²
  Electric current	ampere	A	Base unit
  Thermodynamic temperature	kelvin	K	Base unit
  Luminous intensity	candela	cd	Base unit
  Amount of substance	mole	mol	Base unit
  Plane angle	radian	rad	Supplementary unit
  Solid angle	steradian	sr	Supplementary unit

• Additional Notes:

  • Definitions related to asbestos handling, disposal, and safety are detailed in IS 11451:1986.
  • Personal protection and hygiene (Clause 11.2) require cleaning vehicles and receptacles contacting asbestos waste by vacuum or dustless methods.

Visual Summary of SI Units

graph TD
    A[Base Quantities] --> Length[m (metre)]
    A --> Mass[kg (kilogram)]
    A --> Time[s (second)]
    A --> ElectricCurrent[A (ampere)]
    A --> Temperature[K (kelvin)]
    A --> LuminousIntensity[cd (candela)]
    A --> AmountSubstance[mol (mole)]
    B[Derived Quantities] --> Force[N (newton)]
    B -->

Waste Avoidance as per IS 11768

Key Points:

• Clause 5.2: Waste control prioritizes minimizing waste generation by recycling and selecting processes that reduce waste.
• Clause 6.5.1: Asbestos sludge/slurry must be recycled or securely contained to prevent spillage and drying.
• Clause 11.2: Vehicles and reusable containers contacting asbestos waste must be cleaned using vacuum or dustless methods to avoid contamination.

Specifications & Practices for Waste Avoidance

Summary Diagram of Waste Avoidance Process

flowchart TD
    A[Waste Generation] --> B{Minimize Waste?}
    B -- Yes --> C[Recycle Waste]
    B -- No --> D[Contain Waste Securely]
    C --> E[Safe Disposal]
    D --> E
    E --> F[Cleaning of Equipment]
    F --> G[Compliance & Contractual Control]

Additional Notes:

• No explicit formulas or tables for waste quantities are provided in IS 11768.
• Use vacuum cleaning and dustless methods to avoid airborne asbestos fibers.
• Contract clauses must mandate adherence to these waste avoidance practices.

This approach ensures environmental safety and compliance with IS 11768 standards.

IS 11768: Collection and Packaging of Asbestos Waste - Key Points

1. Packaging & Collection (Clause 5.3.2)

• Use sealed containers or bags that prevent asbestos dust emission during handling.
• Containers must be securely closed before disposal.
• Store containers in a separate, designated area away from traffic or damage risk.
• Do not mix asbestos waste with other waste materials or containers.

2. Handling Methods

• Use bulk handling methods that avoid dust release (e.g., wetting asbestos waste before handling).
• Use sealed vehicles or containers during transportation.

3. Storage Specifications

• Storage area should be:
  • Clearly marked
  • Restricted access
  • Protected from weather and mechanical damage

4. Recommended Packaging Materials

Summary Diagram:

flowchart TD
    A[Asbestos Waste] --> B[Wet to suppress dust]
    B --> C[Pack in sealed bags/drums]
    C --> D[Label & Secure closure]
    D --> E[Store in separate area]
    E --> F[Transport in sealed containers]

Note: Always follow local regulations and safety practices for asbestos waste disposal.

IS 11768 – Transportation of Asbestos Waste: Key Points

• Dust Emission Control (Clause 8.1):
  Transport must ensure no asbestos dust escapes. Use sealed containers or covered vehicles.

• Segregation (Clause 7.3 & 5.3.2):

  • Do not mix asbestos waste with other wastes lacking special disposal needs.
  • Store asbestos waste in a dedicated, secure area away from traffic or damage risk.
  • Containers must be securely closed before transport.

• Bulk Handling (Clause 5.3.2):
  Use methods that prevent dust emission, e.g., sealed bins, tarpaulin covers, or enclosed vehicles.

Summary Table for Transportation Requirements

Best Practice Diagram

flowchart LR
    A[Asbestos Waste] --> B[Sealed Containers]
    B --> C[Dedicated Storage Area]
    C --> D[Covered/Enclosed Transport Vehicle]
    D --> E[Disposal Site]
    style B fill:#f9f,stroke:#333,stroke-width:2px
    style C fill:#bbf,stroke:#333,stroke-width:2px
    style D fill:#fbf,stroke:#333,stroke-width:2px

Note: IS 11768 emphasizes dust containment and segregation to prevent environmental contamination during transportation.

IS 11768: Disposal Site Requirements - Key Points

• Site Approval (Clause 9.1.2):
  Disposal must occur at sites approved by the Competent Authority or follow clauses 9.1.2 to 9.1.10 if no guidelines exist.

  • Site must have vehicular access to the working face or disposal trench.

• Covering Waste (Clause 9.1.5):
  All waste (except high density waste) must be covered with earth to a minimum depth of 250 mm immediately after deposition.

• Tailings Disposal (Clause 9.2):
  For mining/milling tailings, follow recommendations in clauses 9.2.1 to 9.2.5 before final disposal.

• Contractor Requirements (Clause 10.3):
  Contract documents must include all relevant disposal requirements.

Summary Table: Waste Cover Depth

Disposal Site Selection Checklist

• Approved by Competent Authority
• Vehicular access to disposal point
• Suitable trench or hole for waste reception
• Compliance with tailings disposal clauses (if applicable)

flowchart TD
    A[Select Disposal Site] --> B{Approved by Authority?}
    B -- Yes --> C[Check Vehicular Access]
    B -- No --> D[Follow Clauses 9.1.2 to 9.1.10]
    C --> E[Prepare Trench or Hole]
    E --> F[Deposit Waste]
    F --> G{Waste Type}
    G -- Non-high density --> H[Cover with 250 mm Earth]
    G -- High density --> I[Special Handling]

This concise guide ensures compliance with IS 11768 disposal site requirements.

Key Points on Disposal Procedures as per IS 11768

1. Tailings Disposal (Clause 9.2)

• Follow recommendations 9.2.1 to 9.2.5 before final disposal of tailings from mining/milling.
• Waste disposal sites must be approved by Competent Authority (Clause 9.1.2).
• In absence of guidelines, clauses 9.1.2 to 9.1.10 apply.
• Covering Waste: All waste except high-density waste must be covered with minimum 250 mm earth layer immediately after deposition (Clause 9.1.5).

2. Personal Protection & Hygiene (Clause 11.2)

• Vehicles/reusable containers in contact with asbestos waste must be cleaned using vacuum or dustless methods.

3. Contractor Requirements (Clause 10.3)

• Incorporate relevant disposal standards in contracts if a contractor is employed.

Summary Table for Waste Covering Depth

Disposal Workflow (Mermaid Diagram)

flowchart TD
    A[Waste Generation] --> B{Type of Waste}
    B -->|Tailings| C[Follow Clause 9.2 guidelines]
    B -->|Other Waste| D[Site Approval by Competent Authority]
    C --> E[Deposit Waste]
    D --> E
    E --> F{Waste Density}
    F -->|High Density| G[No Earth Cover Required]
    F -->|Non-High Density| H[Cover with ≥250 mm Earth]
    G --> I[Final Disposal]
    H --> I
    I --> J[Clean Vehicles/Receptacles (Vacuum)]

Units & Definitions (Selected)

• Pressure/Stress: Pascal (Pa) = 1 N/m²
• Length: Metre (m)
• Mass: Kilogram (kg)

Note: Always refer to the latest amendments and local authority guidelines for disposal compliance.

IS 11768: General Disposal Requirements - Key Points & Specifications

Clause 9.1.2 to 9.1.10 (General Disposal):

• Waste disposal must occur at Competent Authority-approved sites.
• If no guidelines exist, follow clauses 9.1.2 to 9.1.10.
• Cover all waste (except high-density waste) with at least 250 mm earth layer immediately after deposition (Clause 9.1.5).

Clause 9.2 (Tailings Disposal for Mining/Milling):

• Follow detailed recommendations in 9.2.1 to 9.2.5 before final tailings disposal.

Clause 10.3 (Contractor Requirements):

• Waste disposal contracts must incorporate all relevant IS 11768 provisions.

Clause 11.2 (Personal Protection & Hygiene):

• Vehicles/reusable containers exposed to asbestos waste must be cleaned using vacuum or dustless methods.

Summary Table: Waste Cover Depth

Important Notes:

• Always use approved disposal sites.
• Ensure prompt covering of waste to prevent dust and contamination.
• Follow personal protection protocols strictly, especially for asbestos.
• Incorporate disposal standards in contracts to ensure compliance.

flowchart TD
    A[Waste Generation] --> B[Transport to Approved Site]
    B --> C{Waste Type?}
    C -->|High Density| D[Deposit Waste]
    C -->|Others| E[Deposit Waste + Cover with 250 mm Earth]
    D --> F[Final Disposal]
    E --> F
    F --> G[Site Monitoring & Hygiene Measures]

This concise summary aligns with IS 11768 amendments and ensures safe, compliant asbestos waste disposal.

IS 11768 – Key Guidelines for Disposal of Tailings (Mining & Milling)

Important Clauses Summary:

• 9.2.1: Use wider conveyor belts at slower speeds for tailings transport to minimize spillage and wear.
• 9.2.4: Tailings should be wetted at or before deposition to reduce dust and improve stability.
• 9.1.4: When depositing tailings from height or into excavations, prevent spillage carefully.

Practical Specifications & Recommendations:

Additional Engineering Notes:

• Wetted tailings improve shear strength and reduce airborne dust.
• Slower belt speeds reduce material bounce and spillage.
• For elevated discharge, use chutes or covered conveyors to control flow.

flowchart LR
    A[Mining & Milling] --> B[Tailings Conveyance]
    B --> C[Wider, Slower Conveyor Belts]
    C --> D[Wetting of Tailings]
    D --> E[Controlled Deposition]
    E --> F[Prevent Spillage & Dust]

This approach aligns with IS 11768 for safe, efficient tailings disposal minimizing environmental and operational issues.

IS 11768 - Disposal of Waste from Asbestos-Cement Industry

Key Points from Clause 9.3 & Recommendations:

• Asbestos waste must be handled carefully to prevent airborne fiber release.
• Waste should be sealed in leak-proof containers or wrapped in plastic sheets.
• Disposal sites must be isolated and properly lined to prevent groundwater contamination.
• Waste burial depth should be minimum 3 meters to avoid disturbance.
• No burning or crushing of asbestos waste is allowed.
• Waste must be labeled as “Asbestos Waste – Hazardous”.

Typical Specifications:

Important Formula:

No direct formula is specified, but safe disposal volume can be estimated by:

[ V = W / \rho ]

Where:

• (V) = volume of waste (m³)
• (W) = weight of asbestos waste (kg)
• (\rho) = density of asbestos-cement waste (~1,800 kg/m³)

flowchart TD
    A[Asbestos Waste Generation] --> B[Sealing in Leak-proof Containers]
    B --> C[Labeling as Hazardous]
    C --> D[Transport to Disposal Site]
    D --> E[Burial at ≥ 3m Depth]
    E --> F[Site Isolation and Monitoring]

Summary: Follow strict containment, labeling, and burial depth as per IS 11768 to ensure environmental safety.

IS 11768 - Clause 9.4: Disposal of Waste from Textile Industry

The code provides guidelines for environmentally safe disposal of textile waste, focusing on minimizing pollution and ensuring compliance with environmental norms.

Key Specifications:

• Waste Types: Includes fiber waste, dye residues, chemical sludge.
• Disposal Methods:
  • Segregation: Separate biodegradable and non-biodegradable wastes.
  • Treatment: Chemical treatment for dye and chemical residues before disposal.
  • Landfill: Only after neutralization and stabilization.
  • Incineration: For non-biodegradable, hazardous waste under controlled conditions.

Important Recommendations:

• Avoid direct discharge of untreated effluents.
• Use sedimentation tanks and filtration to reduce solids.
• Regular monitoring of soil and water near disposal sites.

Typical Parameters for Waste Treatment (general reference):

flowchart LR
    A[Textile Waste] --> B{Segregation}
    B --> C[Biodegradable]
    B --> D[Non-Biodegradable]
    C --> E[Treatment: Composting or Biodegradation]
    D --> F[Treatment: Chemical Neutralization]
    F --> G[Incineration or Landfill]
    E --> H[Safe Disposal]
    G --> H

Summary: Follow chemical neutralization, segregation, and controlled disposal to minimize environmental impact of textile industry waste as per IS 11768 Clause 9.4.

IS 11768: Contractor Responsibilities & Supervision Summary

• Contractor Responsibilities (Clauses 10.3 & 10.4):

  • Contractor must comply with all safety and waste disposal requirements specified in the contract.
  • Safety measures must be observed at all stages, including at the disposal site.

• Supervision & Checks (Clauses 10.2 & 10.5):

  • Periodic supervision by the undertaking is mandatory to ensure safety precautions.
  • Periodic checks ensure contractor compliance with safety clauses.

Key Specifications:

Best Practice:

• Include clear safety clauses in the contract.
• Maintain a supervision schedule (weekly/monthly).
• Use checklists for safety compliance during inspections.

flowchart LR
    A[Contractor] --> B[Implement Safety Measures]
    B --> C[Waste Disposal Site]
    D[Undertaking] --> E[Periodic Supervision]
    E --> F[Safety Compliance Checks]
    F --> B

This ensures continuous feedback and compliance monitoring.

IS 11768: Personal Protection and Hygiene Key Points

Clause 11.2 - Cleaning of Vehicles and Receptacles:

• Vehicles and reusable covers exposed to asbestos waste must be cleaned after use.
• Cleaning methods:
  • Vacuum cleaner (preferably HEPA-filtered)
  • Alternative dustless cleaning methods (no dry sweeping or compressed air)

Clause 6.1.5 - Protective Clothing and Respirators:

• Use suitable protective clothing and respirators when changing filter bags on dust collectors.

Personal Protection Measures Summary

Hygiene Practices

• Avoid eating, drinking, or smoking in asbestos handling areas.
• Wash hands and face thoroughly after work.
• Provide facilities for changing and washing.

Additional Notes

• These measures align with ILO Codes of Practice: Safety in the use of asbestos, 1984.
• Emphasis on preventing airborne contamination and environmental pollution.

flowchart TD
    A[Asbestos Exposure] --> B[Use Protective Clothing & Respirators]
    B --> C[Work Process]
    C --> D[Vehicle/Receptacle Contamination]
    D --> E[Clean by Vacuum or Dustless Method]
    E --> F[Prevent Soil/Air/Water Pollution]
    F --> G[Personal Hygiene: Wash & Change Clothes]

This ensures worker safety and environmental protection per IS 11768.