Specification for Hydrant Stand-Pipe for Fire Fighting

IS 5714: Scope and Key Specifications Summary

Scope:
IS 5714 covers specifications for hydrant stand-pipes used in fire fighting, including types, materials, dimensions, testing, and marking.

Key Specifications & Formulas

• Types of Stand-pipes (Clause 4.1):

  • Type A: Single outlet
  • Type B: Double outlet (handle size 100 mm, thickness 5 mm)

• Hydrostatic Pressure Test (Clause 6.1):

  • Pressure = 2.1 MN/m² (21 kgf/cm²)
  • Duration = 2.5 minutes
  • Purpose: Detect porosity and leakage

• Materials:

  • Chain: Galvanized steel wire per IS 280
  • Outlets: 63 mm female instantaneous outlet per IS 5290-1977
  • Threads: Per IS 2643 (Pt.1) - 1975

• Marking (Clause 7.1.1):

  • ISI Certification Mark usage governed by ISI rules, ensuring compliance and quality control.

International System of Units (SI Units) used:

Hydrostatic Test Setup (Conceptual Diagram)

flowchart LR
    A[Assembled Stand-pipe] --> B[Blank Caps Installed]
    B --> C[Apply Hydrostatic Pressure 2.1 MN/m²]
    C --> D[Hold for 2.5 minutes]
    D --> E{Check for Leakage or Porosity}
    E -- Pass --> F[Approved]
    E -- Fail --> G[Reject or Repair]

Note: For detailed dimensions and tolerances, refer to Fig. 1 and Fig. 2 of IS 5714.

IS 5714: Stand-Pipe Components & Specifications Summary

Components of Stand-Pipe (Clause 2.1)

• Shaft with fittings
• Head: includes a bend
• Instantaneous female outlet(s) with blank cap(s)

Types of Stand-Pipes (Clause 4.1)

• Type A: Single outlet
• Type B: Double outlet

Key Dimensions & Tolerances (Clause 4.2)

• Dimensions per Fig. 1 and Fig. 2 (refer IS 5714)
• Tolerances as per IS 2102-1969, except where otherwise specified
• All dimensions in millimeters

Threading & Fittings

• Threads per IS 2643 (Pt.1)-1975
• Round threads as per IS 909-1975
• Female instantaneous outlet (63 mm) as per IS 5290-1977
• Outlet orientation: horizontal or at 30° angle
• Joint types: bolted or screwed

Base of Stand-Pipe

• As per Fig. 2 in IS 5714

Important Notes:

• Outlets can be single or double
• Alternative jointing methods allowed (bolted/screwed)
• Use of ISI mark governed by certification rules (Clause 7.1.1)

Typical Stand-Pipe Assembly (Mermaid.js Diagram)

graph TD
    A[Stand-Pipe] --> B[Shaft with fittings]
    A --> C[Head (with bend)]
    A --> D[Instantaneous Female Outlet(s)]
    D --> E[Blank Cap(s)]
    D --> F[Single or Double Outlet]

For detailed dimensions, refer to Fig. 1 & Fig. 2 of IS 5714.
Thread and outlet standards ensure compatibility and reliability in firefighting applications.

IS 5714 Key Specifications on Materials

• Aluminium Alloy (Clause 3.2)
  Must conform to IS 617-1975 (Designation 4 450) for castings and forgings.

• Aluminium Pipe (Clause 3.4)
  If used for stand-type shafts, pipes must comply with IS 737-1974.

• Leather (Clause 3.5.2)
  Leather components shall conform to IS 581-1976.

• Hydrostatic Pressure Test (Clause 6.1)

  • Test pressure: 2.1 MN/m² (21 kgf/cm²)
  • Duration: 2.5 minutes
  • Purpose: Detect porosity and leakage in castings and connections.

Additional Notes:

Hydrostatic Test Setup (Simplified):

flowchart LR
    A[Assembled Unit] --> B[Blank Caps Installed]
    B --> C[Apply 2.1 MN/m² Pressure]
    C --> D[Hold for 2.5 Minutes]
    D --> E{Check for Leakage or Porosity}
    E -- No --> F[Pass]
    E -- Yes --> G[Reject/Repair]

This ensures material integrity and leak-proof assembly as per IS 5714.

IS 5714: Types and Dimensions of Stand-Pipes

Types (Clause 4.1)

• Type A: Single outlet stand-pipe (see Fig. 1)
• Type B: Double outlet stand-pipe (see Fig. 1)
• Outlet can be at 0° or 30° from horizontal.
• Outlet may be single or double.
• Joint types: Bolted or screwed joints allowed.

Dimensions (Clause 4.2)

• Dimensions per Fig. 1 and Fig. 2 (all in mm).
• Tolerances as per IS 2102-1969, except where otherwise specified.
• Base dimensions as per Fig. 2.
• Handle size for double outlet: 100 mm diameter, 5 mm thickness (footnote IV).

Threading

• Threads as per:
  • IS 2643 (Pt.1)-1975 (general threading)
  • IS 909-1975 (round threads)
• Outlets: 63 mm female instantaneous outlet with blank cap as per IS 5290-1977.

Material & Accessories

• Leather seals per IS 581-1961.
• Chain: Galvanized steel wire per IS 280.

Summary Table of Key Dimensions (Typical)

graph TD
    A[Stand-Pipe Types] --> B[Type A: Single Outlet]
    A --> C[Type B: Double Outlet]
    C --> D[Handle: 100 mm dia, 5 mm thick]
    B & C --> E[Outlet angle: 0° or 30°]
    E --> F[Threading per IS 2643 / IS 909]
    F --> G[63 mm Female Instantaneous Outlet]

For detailed dimensions, refer to Fig. 1 and Fig. 2 of IS 5714.

IS 5714: Construction and Workmanship Key Points

1. Materials & Components:

• Chain: Must be galvanized steel wire conforming to IS 280 (Clause 3.6).
• Leather (if used): Shall conform to IS 581-1976 (Clause 3.5.2).
• Handle for double outlet stand pipe: Size 100 mm diameter, thickness 5 mm (Fig. 1, footnote iv).

2. Hydrostatic Pressure Test (Clause 6.1):

• Test pressure: 2.1 MN/m² (21 kgf/cm²)
• Duration: 2.5 minutes
• Purpose: Detect porosity and leakage in casting, connections, and outlets.

3. Marking (Clause 7.1.1):

• Stand-pipes may carry ISI Certification Mark indicating compliance with IS standards and quality control.

Important Specifications Summary

Hydrostatic Test Setup (Conceptual)

flowchart LR
    A[Assembled Standpipe Unit] --> B[Blank Caps in Position]
    B --> C[Apply Hydrostatic Pressure 2.1 MN/m²]
    C --> D[Maintain for 2.5 minutes]
    D --> E[Inspect for Porosity & Leakage]

This ensures durability and reliability of hydrant stand-pipes per IS 5714 requirements.

IS 5714: Performance Requirements Summary

1. Hydrostatic Pressure Test (Clause 6.1)

• Test Pressure: 2.1 MN/m² (21 kgf/cm²)
• Duration: 2.5 minutes
• Purpose: Detect porosity and leakage in casting and connections.
• Condition: Blank caps fitted during test.

2. Flow Test (Clause 6.2)

• Minimum Flow: 900 litres/minute per outlet
• Test Pressure: 0.7 MN/m² (7 kgf/cm²)
• Method: Flow measured by flow meter or V-notch.
• Type Test: Mandatory for assembly.

Key Units (SI Units per IS 5714)

Quick Reference Table

flowchart LR
    A[Assembled Unit] --> B[Hydrostatic Pressure Test]
    B -->|2.1 MN/m², 2.5 min| C{Pass?}
    C -->|Yes| D[Flow Test]
    C -->|No| E[Reject/Repair]
    D -->|≥900 L/min at 0.7 MN/m²| F[Pass]
    D -->|<900 L/min| E

Note: Ensure stand-pipe marking with ISI certification as per Clause 7.1.1 for quality assurance.

IS 5714: Marking Key Points (Clause 7.1.1)

• The stand-pipe may carry the ISI Certification Mark, indicating compliance with the standard under ISI's inspection and quality control.
• Use of the ISI Mark is governed by the Indian Standards Institution (Certification Marks) Act.
• ISI Mark ensures:
  • Production as per IS 5714 requirements.
  • Continuous ISI surveillance for conformity.
• Manufacturers must obtain a license from ISI for using the ISI Mark.

Relevant Specifications Summary

SI Units & Symbols (For Reference)

Hydrostatic Pressure Test Formula

[ P = 2.1 , \text{MN/m}^2 = 21 , \text{kgf/cm}^2 ]

Test duration: 2.5 minutes with blank caps.

flowchart TD
    A[Stand-pipe] --> B[Marking]
    B --> C{ISI Certification Mark?}
    C -->|Yes| D[License from ISI required]
    C -->|No| E[No ISI Mark]
    D --> F[Assures compliance with IS 5714]
    F --> G[Continuous ISI surveillance]

For detailed marking format and licensing, contact the Indian Standards Institution.

IS 5714: Testing Procedures Key Points

1. Hydrostatic Pressure Test (Clause 6.1)

• Test Pressure: 2.1 MN/m² (21 kgf/cm²)
• Duration: 2.5 minutes
• Purpose: Detect porosity and leakage in casting and connections.
• Condition: Blank caps in position during test.

2. Flow Test (Clause 6.2)

• Minimum Flow: 900 litres/minute
• Test Pressure: 0.7 MN/m² (7 kgf/cm²)
• Method: Flow measured via flow meter or V-notch.
• Type Test: Mandatory for each outlet.

Summary Table

Additional Notes:

• Marking (Clause 7.1.1): Stand-pipes may carry ISI Certification Mark as per ISI rules.
• Units used are SI units (Pa, N, m, etc.) as per IS 5714.

flowchart TD
    A[Assembled Unit] --> B[Hydrostatic Pressure Test]
    B -->|2.1 MN/m² for 2.5 min| C{Leakage?}
    C -->|No| D[Flow Test]
    C -->|Yes| E[Reject/Repair]
    D -->|Flow ≥ 900 L/min at 0.7 MN/m²| F[Pass]
    D -->|Flow < 900 L/min| E

This concise summary ensures compliance with IS 5714 testing requirements for hydrant stand-pipes.