Fire Safety of Industrial Buildings - Jute Mills - Code of Practice

IS 3836 - Scope Summary

• Scope Definition:
  IS 3836 applies to fire prevention and safety in textile industries, referencing definitions from IS 232 and IS 8757.

• Rounding Off Values:
  Test results must be rounded per IS 2:1960 rules, retaining the same significant figures as specified values.

• Referenced Standards:
  Annex A lists related Indian Standards; users should consult the latest editions for compliance.

• Minimum Illumination for Fire Fighting (Clause 14.1):

This ensures adequate visibility during emergencies.

Note: For detailed formulas or tables beyond illumination, refer to IS 3836 full text and referenced standards IS 232, IS 8757.

IS 3836 - Definitions & Key Specifications Summary

• Reference Standards:
  Definitions rely primarily on IS 232 (Glossary of terms for textiles) and IS 8757 (Textile testing methods).

• Rounding Off Values:
  Follow IS 2:1960 for rounding numerical results:

  • Retain the same number of significant digits as the specified value.
  • Round final observed/calculated test results accordingly.

• Terminology:

  • Jute includes flax, hemp, sisal, and similar vegetable fibers (excluding cotton and kapok).

• Annex A:
  Lists relevant Indian Standards referenced in IS 3836; users should check for the latest editions.

Key Notes for Compliance:

flowchart TD
    A[IS 3836 Definitions] --> B[IS 232 - Textile Terms]
    A --> C[IS 8757 - Testing Methods]
    A --> D[IS 2:1960 - Rounding Rules]
    A --> E[Jute = Flax, Hemp, Sisal, etc.]

This ensures clarity and uniformity in interpreting test results and terminology under IS 3836.

IS 3836: General Requirements - Key Points

1. Definitions (Clause 3.0)

• Use definitions from IS 232 and IS 8757 for terms related to this standard.

2. Rounding Off (General Clause)

• Final test values must be rounded per IS 2 : 1960.
• Retain the same number of significant digits as specified in IS 3836.

3. Illumination Requirements (Clause 14.1)

4. Constructional Compliance (Clause 7.1)

• All buildings must comply with IS 1641 for structural safety and fire resistance.

Summary Table for Illumination

| Section                                | Lux  |
|--------------------------------------|------|
| Weaving, spinning, jacquard looms    | 200  |
| Yarn, calendering                     | 150  |
| Open compound                        | 20   |

This ensures safety, visibility, and structural compliance in textile industry premises per IS 3836.

IS 3836: Fire Prevention Measures - Key Points

Fire Prevention (Clause 13.3)

• Monthly inspection of fire prevention measures in all fire risk areas.
• Coordination with local fire authorities for adequate measures.
• Immediate reporting and remedial action on irregularities.

Fire Fighting Appliances (Clause 13.4)

• Provide fire fighting appliances as per IS 2190.
• Appliances must be appropriate type and size for the factory areas.

Illumination for Fire Fighting (Clause 14.1)

Additional Notes:

• Fire fighting appliances include extinguishers, hydrants, hoses as per IS 2190.
• Ensure clear access routes and signage for fire safety.
• Regular training and fire drills recommended for preparedness.

flowchart LR
    A[Fire Risk Areas] --> B[Fire Prevention Measures]
    B --> C[Monthly Inspection]
    B --> D[Coordination with Fire Authority]
    C --> E[Report Irregularities]
    E --> F[Remedial Action]
    A --> G[Fire Fighting Appliances (IS 2190)]
    G --> H[Appropriate Type & Size]
    A --> I[Illumination Levels]
    I --> J[200 lux for looms]
    I --> K[150 lux for yarn/calendering]
    I --> L[20 lux for open compound]

This ensures compliance with IS 3836 fire safety provisions for industrial premises.

IS 3836: Site and Layout Planning - Key Points

• Compound Layout (Clause 6.1):
  The compound must be spacious enough to accommodate all processing, manufacturing, storage, and subsidiary buildings, complying with Clause 9 provisions.

• Building Construction (Clause 7.1):
  All buildings within the compound should follow IS 1641 construction requirements, ensuring fire safety and structural integrity.

• Minimum Distances (Clause 9.3):

  • No building shall be closer than 7.5 m to manufacturing/processing sections unless part of the same block with proper segregation (fire-resistant walls).
  • Open spaces between buildings must connect to roads/yards wide enough for fire appliance access.

• Illumination Requirements (Clause 14.1):

Summary Diagram: Layout Planning Concept

graph LR
  A[Processing & Manufacturing] -- 7.5 m min --> B[Other Buildings]
  B -- Segregated by fire walls --> C[Same Block Buildings]
  A & B -- Connected by --> D[Road/Yard for Fire Access]
  D -- Wide enough --> E[Fire Appliance Access]

This ensures fire safety, accessibility, and operational efficiency per IS 3836.

IS 3836: Access Roads and Fire Fighting Facilities

Key Specifications:

• Access Roads:

  • Minimum width: 6 m (Clauses 6.3 & 6.5).
  • Roads must allow fire engines and firefighting appliances to pass and turn easily.
  • Turning circle space must be provided near static tanks/reservoirs.

• Fire Fighting Water Supply:

  • Firefighting water supply must be via fire hydrants and static water tanks (Clause 13.10).
  • At least 50% of water supply should be from static tanks.
  • Static tanks must be located within 180 m of buildings/risks.

• Remote Factories (>8 km from fire brigade):

  • Must have own firefighting arrangements including:
    • Major fire appliances
    • Water supplies
    • Fire station buildings
    • Firefighting staff and duty systems
  • To be planned with local fire authority (Clause 13.12).

Summary Table:

flowchart LR
    A[Access Road ≥ 6 m] --> B[Fire Engine Access]
    B --> C[Turning Circle near Static Tank]
    C --> D[Static Water Tanks (≥50% water supply)]
    D --> E[Located ≤180 m from buildings]
    F[Remote Factory >8 km] --> G[Own Firefighting Arrangements]
    G --> H[Coordination with Local Fire Authority]

This ensures safe, efficient fire fighting access and water supply as per IS 3836.

IS 3836 (2000) - Fire Safety of Industrial Buildings (Jute Mills)

Key Fire Resistance Requirements (per Clauses 7.4 & 7.6)

• Buildings housing beaming, dressing, weaving, calendering:
  • Minimum fire resistance = Type 2 structures (per IS 1641)
• Buildings housing offices, engine houses, pump houses, motor & rope alleys:
  • Minimum fire resistance = Type 3 structures (per IS 1641)

Reference: IS 1641 - Fire Resistance of Structures

Practical Notes:

• Fire resistance is defined as the duration a building element can withstand fire exposure without losing structural integrity.
• Use fire-resistant materials and fireproof coatings to achieve required ratings.
• Follow additional fire safety practices as per Fire Safety Sectional Committee CED 36 recommendations.

flowchart LR
    A[Building Usage] --> B{Fire Resistance Required}
    B -->|Beaming, Dressing, Weaving, Calendering| C[Type 2 - 3 hrs]
    B -->|Offices, Engine, Pump, Motor, Rope Alleys| D[Type 3 - 2 hrs]
    C & D --> E[Refer IS 1641 for construction details]

Summary:
For jute mills, IS 3836 mandates fire resistance levels aligned with IS 1641 types—Type 2 (3 hrs) for processing areas, Type 3 (2 hrs) for utility and office spaces—to ensure structural safety under fire conditions.

IS 3836: Separating Walls and Fire Compartments

Key Specifications:

• Fire Resistance:
  Separating walls must be fire-resistant for 4 hours, extending from floor to at least 1 m above the roof/ceiling (Clause 7.12).

• Doorway Requirements:
  External walls of jute godowns must have at least one doorway of 3 m x 2 m per 10 m length, minimum one per wall (Clause 7.14).

• Separating Walls Locations (Clause 8.2 & 8.3):
  Fire-resisting separating walls (per IS 1642, Clause 6.1.2) required between:

  • Different godown types (baled jute, loose jute, finished goods, jute waste, oil godowns, hazardous/non-hazardous stores)
  • Utility sections: pump house, boiler house, transformer house, electrical generating/sub-station.

Reference: IS 1642 (Clause 6.1.2) Fire Resistance for Separating Walls

Summary Diagram:

graph TD
  A[Godown Area > Limit] --> B[Provide Separating Wall]
  B --> C[Fire Resistance: 4 Hours]
  B --> D[Height: Floor to 1m above Roof]
  B --> E[Between Different Godown Types & Utilities]
  E --> F[Pump House]
  E --> G[Boiler House]
  E --> H[Transformer House]
  E --> I[Electrical Stations]

Use IS 1642 for detailed fire-resistance construction methods and wall thicknesses.

IS 3836 - Storage of Jute and Other Materials: Key Points

• Clause 11.1:
  Storage of materials other than jute or finished goods must follow IS 3594 (which covers general storage requirements for various materials).

• Clause 11.2 (Jute Godowns):

  • Jute godowns are specialized storage buildings for jute fibres, baled or loose.
  • Clause 11.2.4:
    • Jute bales must not be stacked directly on the floor.
    • Use wooden sleepers or masonry/concrete plinths at least 22.5 cm high to prevent moisture damage.

Summary Table for Jute Bale Storage

Additional Notes:

• Proper ventilation, moisture control, and pest protection are essential in jute godowns (refer IS 3836 clauses on godown design).
• For other materials, refer to IS 3594 for stacking heights, spacing, and floor loading.

flowchart TD
    A[Jute Bale Storage] --> B[Concrete/Masonry Plinth ≥ 22.5 cm]
    A --> C[Wooden Sleepers]
    B --> D[Prevents moisture from floor]
    C --> D
    D --> E[Protects jute quality]

This ensures durability and quality preservation of jute fibres during storage.

IS 3836: Machinery Layout and Clearances – Key Specifications

• Clear Passageways (Clause 10.6):
  Minimum width = 3 m
  Spacing = every 50 m along the floor area from carding to weaving.

• Clear Space Between Trays and Machines (Clause 10.10.1):
  Minimum clearance = 1 m

• Clear Space Between Specific Machines (Clause 10.9):
  Between weaving looms & calendering machines = 6 m
  Between calendering machines & sack sewing machines = 6 m

• Building Separation (Clause 9.3):
  Minimum distance from manufacturing/process sections = 7.5 m (unless part of same block with separating walls)
  Open spaces must connect to roads/yards wide enough for fire appliance access.

Summary Table

flowchart LR
    Carding -->|Floor with 3m wide passage every 50m| Weaving
    Weaving -->|6m clearance| Calendering
    Calendering -->|6m clearance| SackSewing
    Trays -. 1m clearance .-> Machines
    ManufacturingBuildings -. 7.5m clearance .-> OtherBuildings
    OpenSpaces --> FireAccessRoads

This layout ensures operational efficiency, safety, and fire access compliance.

IS 3836: Key Points on Godown Design & Stacking Practices

Stacking Practices

• Clause 11.4 (Caddi Godown):
  Stacking of caddi bales must follow the same rules as jute bales.

• Clause 11.2.8 (Pucca Bales):

  • Maintain ≥1 m clearance from godown walls.
  • Maintain ≥0.5 m clearance from supporting columns/pillars.

Godown Design Specifications

• Clause 7.9:
  For materials other than jute/jute goods, follow IS 3594 for construction.

• Clause 7.13:

  • Maximum distance to any external/fire/emergency exit: 20 m.
  • Floors must be sloped adequately towards external doors to prevent waterlogging during firefighting.

Summary Table

flowchart LR
    A[Godown Floor] --> B[Sloped towards External Door]
    B --> C[Prevents Waterlogging]
    D[Stacking of Bales] --> E[≥1 m from Walls]
    D --> F[≥0.5 m from Columns]
    G[Exit Points] --> H[Max 20 m from any point]

For detailed structural design, refer to IS 3594 and stacking standards for jute bales as per IS 3836.

IS 3836: Electrical Installations and Lighting - Key Points

1. Electrical Installation (Clause 12.1.1)

• Must conform to IS 1646 (Code of practice for electrical wiring installations).

2. Circuit Separation (Clause 12.2.10)

• Perimeter, street, and yard lighting must be on separate circuits.
• These circuits require independent switches and main switches distinct from building lighting.

3. Minimum Illumination Levels (Clause 14.1 - Table 14)

Notes:

• Adequate lighting is critical for effective firefighting and workplace safety.
• Separate circuits ensure safety and operational reliability in lighting systems.

flowchart LR
    A[Electrical Installation] --> B[Conform to IS 1646]
    A --> C[Separate Circuits for Perimeter/Street/Yard Lighting]
    C --> D[Independent Switches]
    C --> E[Main Switches]
    A --> F[Minimum Illumination Levels]
    F --> G[200 Lux - Weaving, Spinning, Jacquard]
    F --> H[150 Lux - Yarn, Calendering]
    F --> I[20 Lux - Open Compound]

For detailed wiring practices, refer to IS 1646.

IS 3836: Fire Fighting Water Supply and Equipment - Key Points

Water Supply Requirements (Clauses 13.9 & 13.10)

• Minimum water flow rates:
  • Process area: 1800 l/min
  • Storage area: 3600 l/min
• Duration of supply:
  • Without replenishment: 4 hours
  • With replenishment: 2 hours
• Total water volume required:

[ \text{Volume} = \text{Flow rate} \times \text{Duration} ]

Example for medium factory (process + storage):

• Static water tanks must provide at least 50% of total water.
• Tanks located within 180 m of buildings/risks.

Definitions (Clause 3.14)

• Static Tank: A dedicated water reservoir reserved for firefighting.

Special Provisions (Clause 13.12)

• Factories >8 km from fire brigade must arrange:
  • Major firefighting appliances
  • Adequate water supply
  • Fire station and staff
• Coordination with local fire authority is mandatory.

flowchart LR
    A[Water Supply for Fire Fighting]
    A --> B[Process Area: 1800 l/min]
    A --> C[Storage Area: 3600 l/min]
    B & C --> D[Duration: 4 hours (no replenishment)]
    D --> E[Calculate total volume]
    E --> F[Static Tanks ≥ 50% volume]
    F --> G[Tanks ≤ 180 m from risk]
    A --> H[Factories >8 km from fire brigade]
    H --> I[Own firefighting arrangements]
    I --> J[Consult local fire authority]

Summary: Ensure minimum flow rates and duration, provide static tanks for half the volume close to risks, and plan major firef

IS 3836: Fire Detection and Alarm Systems - Key Points

Automatic Detection & Alarm System (Clause 13.8)

• Mandatory for:
  • High fire risk processes/storage areas, especially unattended ones.
• Systems:
  • Automatic detection & alarm system or automatic sprinkler system.
• Connection:
  • Must link to a Central Control Room.
• Other areas:
  • Require periodic fire watching and communication to the control room operational 24/7.

Audible Fire Alarm (Clause 13.7)

• Requirement:
  • Clearly audible alarms in all factory areas to enable immediate evacuation and firefighting.

Illumination for Fire Fighting (Clause 14.1)

Summary Diagram of Fire Safety Communication & Alarm System

graph LR
  A[High Fire Risk Area] -->|Detection/Alarm| B[Central Control Room]
  C[Other Areas] -->|Periodic Visit & Communication| B
  B --> D[Audible Alarm System]
  D --> E[Workers Evacuation & Fire Fighting]

Note: Ensure fire alarm audibility and illumination meet specified lux levels for effective response.

IS 3836: Operational Safety & Hot Work Controls

Key Provisions (Clause 15.3)

• No welding, metal cutting, or open fire work allowed in manufacturing/process blocks unless essential.
• Essential hot work requires:
  • Clearance from Officer-in-Charge.
  • Consultation with Safety/Fire Officer.
• During hot work:
  • All safety precautions must be observed.
  • Skeleton fire staff with first-aid firefighting appliances must be on standby.

Illumination Requirements (Clause 14.1, Table 14)

Additional Safety Controls

• Monthly checks on fire prevention measures in fire-risk areas (Clause 13.3).
• Emergency firefighting and rescue procedures must be:
  • Developed.
  • Regularly practiced.
  • Periodically revised (Clause 13.16).

Summary Diagram: Hot Work Safety Workflow

flowchart TD
    A[Need for Hot Work?] -->|Yes| B[Obtain Clearance]
    B --> C[Consult Safety/Fire Officer]
    C --> D[Implement Safety Precautions]
    D --> E[Deploy Fire Staff & Equipment]
    E --> F[Conduct Hot Work]
    F --> G[Monitor & Standby]
    A -->|No| H[No Hot Work Allowed]

Ensure strict adherence to these controls to minimize fire risk during hot work in manufacturing environments.