Polypropylene-random copolymer pipes for hot and cold water supplies

IS 15801: Scope - Key Specifications & Tables

Scope:
IS 15801 covers specifications for PPR pipes including dimensions, pressure ratings, and test methods.

Key Tables & Specifications:

1. Allowable Maximum Operating Pressure (Table 6)

2. Outside Diameter, Tolerance & Ovality (Table 1)

IS 15801 References & Key Specifications Summary

1. References (from IS 15801 Table 2)

These standards are integral to IS 15801 provisions:

2. Allowable Maximum Operating Pressures (Table 6)

For PPR pipes at various temperatures and SDRs:

IS 15801 - Key Definitions, Formulas & Tables

1. Definitions (Clause 3)

• Defines terms, symbols, and abbreviations used in the standard.
• Final test/analysis values must be rounded per IS 2:1960 rules.

2. Allowable Maximum Operating Pressures (Table 6)

Use for PPR pipes at varying temperatures.

3. Outside Diameter, Tolerance & Ovality (Table 1, Clause 7.1)

IS 15801: Designation and Grades of Material – Key Points

1. Material Grade (Clause 4.2)

• Base resin/compound for pipes is designated as:
  • PP-R-P-H-N-10-35-003/006 or PP-R-P-H-C-10-35-003/006 (per IS 10951).
• Grade is provided by raw material or compound manufacturer.

2. Operating Pressure vs Temperature (Clause 4.3(b), Table 6)

3. Outside Diameter Tolerance & Ovality (Clause 7.1, Table 1)

IS 15801: Material Requirements Key Points

1. Melt Flow Rate (MFR) Requirements (Clause 6.2.2)

• MFR ≤ 0.5 g/10 min at 230℃, load 2.16 kg (per IS 13360 Part 4/Sec 1).
• MFR must be within ±20% of manufacturer's declared value.

2. Testing Requirements for Lots (Clause 10.2.4.1)

• Test for:
  • Hydraulic characteristics
  • Reversion
  • Density
  • MFR
  • Opacity
• For solar/outdoor use: Carbon black content/dispersion also required.

3. Allowable Maximum Operating Pressures (Table 6 excerpt)

4. **Impact Strength Test Spec

IS 15801: Physical & Chemical Properties Key Points

1. Physical Properties

• Density & Relative Density:
  As per Part 3/Sec 1 (1995), density is determined for non-cellular plastics.
  Typical formula:
  [ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \quad (kg/m^3) ]

• Melt Mass Flow Rate (MFR) & Melt Volume Flow Rate (MVR):
  From Part 4/Sec 1, MFR and MVR measure flow properties of thermoplastics under heat.

  • MFR (g/10 min) indicates mass flow under load.
  • MVR (cm³/10 min) indicates volume flow under load.

• Opacity: Tested to ensure light-blocking properties, important for UV resistance.

2. Chemical Properties

• Carbon Black Content/Dispersion:
  Critical for solar heating/outdoor pipes to ensure UV resistance and longevity.

• Thermal Stability & Reversion:
  Checked to ensure material does not degrade or change properties under heat.

• Overall Migration Test:
  Ensures no harmful chemical migration into water intended for human consumption.

3. Hydraulic Characteristics & Operating Pressures

IS 15801 Key Specifications for Pipe Dimensions

1. Outside Diameter (Clause 7.1, Table 1)

• Tolerance formula: 0.009 × DN (min 0.3 mm), no negative tolerance.
• Ovality basis:
  • DN ≤ 75 mm: 0.01 × DN (min 1.2 mm)
  • 75 < DN ≤ 250 mm: 0.02 × DN
  • DN > 250 mm: 0.35 × DN

2. Wall Thickness (Clause 7.2, Table 2)

IS 15801: Mechanical Properties - Key Formulas & Tables

1. Impact Strength (Clause 9.4, Annex B)

• Test: Charpy Impact Strength on pipe specimens.
• Specimen Dimensions (Table 7):

2. Allowable Maximum Operating Pressures (Table 6)

IS 15801 - Hydraulic Characteristics & Fusion Compatibility

1. Hydraulic Characteristics (Clause 9.1 & Table 3)

• Pipes must withstand internal hydrostatic pressure tests (IS 12235 Part 8/Sec 1) without swelling, leakage, or bursting.
• Key test parameters from Table 3:

2. Fusion Compatibility (Clause 9.2)

• Manufacturer must demonstrate fusibility by testing socket fusion joints.
• Fusion joints are tested for hydraulic characteristics per Clause 9.1 and Table 3, SI No. (iii).
• Ensures pipe & fitting joint strength and integrity under pressure.

3. Sampling for Tests (Clause 10.2.4.2 & Table 5)

• Tests include hydraulic characteristics, fusion compatibility, reversion, density, MFR, opacity, carbon black content, thermal stability, and migration.

Summary

• Hydraulic test: Pipes must endure internal pressure without failure.
• Fusion test: Socket fusion joint strength per hydraulic test conditions.
• Sampling: Depends on lot size, minimum 3 samples for small lots.
• Type tests: Hydraulic characteristics (long duration), fusion compatibility, thermal stability, migration.

flowchart LR
    A[Pipe & Fittings] --> B[Socket Fusion Joint]
    B --> C[Hydraulic Test (Clause 9.1)]

IS 15801: Sampling, Frequency of Tests & Criteria for Conformity

1. Sampling Size

• Visual & Dimensional Inspection (Table 4):
  Sample size depends on lot size, with first and second samples taken if needed.
  Example:

  Lot Size	First Sample	Second Sample	Cumulative Sample	Acceptance No.	Rejection No.
  Up to 150	13	13	26	0-1	2-2
  501 to 1200	50	50	100	2-6	5-7

• Hydraulic, Fusion Compatibility, etc. (Table 5):
  Sample size for these tests:

  Lot Size	Sample Size
  Up to 150	3
  151 to 500	3
  501 to 3200	5
  Above 3200	8

2. Frequency of Testing

• Type Tests: Hydraulic characteristics, fusion compatibility, overall migration, thermal stability.
• Acceptance Tests: Remaining tests (impact strength, density, MFR, carbon black content, etc.) on samples per Table 5.

3. Criteria for Conformity

• Lot is accepted if no samples fail in hydraulic, fusion compatibility, reversion, impact, density, MFR, opacity, carbon black, water influence, and thermal stability tests.
• For visual/dimensional tests, acceptance/rejection numbers in Table 4 apply.

Summary Flow (Mermaid.js)

flowchart TD
    A[Start: Lot Received] --> B{Lot Size?}
    B -->|<=150| C[Take 13 samples for Visual/Dimensional]
    B -->|501-1200| D[Take 50 samples for Visual/Dimensional]
    C --> E[Take 3 samples for Hydraulic etc.]
    D --> F[Take 5 samples for Hydraulic etc.]
    E --> G{Test Results}
    F --> G
    G -->|No Failures| H[Accept Lot]
    G -->|Failures| I[Reject Lot]

IS 15801 - Marking Specifications & Key Details

1. Marking Requirements (Clause 12.2)

Each pipe must be clearly marked with:

• Manufacturer's name or trade-mark
• Outside diameter and minimum wall thickness
• Lot/Batch number (including date of manufacture and machine number)

2. Marking Methods (Clause 12.1)

• Marking must be on each straight length of pipe.
• Methods can include embossing, printing, or stamping to ensure legibility.

3. BIS Certification Mark (Clause 12.3 & 12.3.1)

• Pipes may carry the BIS Standard Mark.
• Use governed by Bureau of Indian Standards Act, 1986.
• Conditions for use available from BIS.

4. Allowable Maximum Operating Pressures (Table 6)

5. Test Specimen Dimensions for Impact Strength (Annex B)

IS 15801: Quality Assurance & Type Approval Summary

1. Quality Assurance Tests (Clause 10.2.4.1 & 10.2.4.2)

• Tests on lot after dimensional & visual acceptance:

  • Hydraulic characteristics
  • Reversion
  • Density
  • Melt Flow Rate (MFR)
  • Opacity
  • Carbon black content/dispersion (for solar/outdoor pipes)
  • Fusion compatibility
  • Impact strength
  • Thermal stability
  • Influence on water for human consumption (overall migration)

• Sampling (Table 5):

2. Type Tests (Clause 10.1 & 11)

• Type tests include:
  • Hydraulic characteristics
  • Fusion compatibility
  • Overall migration
  • Thermal stability
• Acceptance tests include the rest such as density, MFR, opacity, etc.

3. Allowable Operating Pressure (Table 6)

• Pressure varies with SDR and temperature:

4. Impact Strength Test (Annex B)

• Specimen dimensions depend on pipe size:

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IS 15801: Storage and Handling - Key Formulas, Tables & Specs

1. Allowable Maximum Operating Pressures (Table 6)

For PPR Pipes at various temperatures and SDRs:

2. Hydraulic Characteristics Test (Table 3)

Internal hydrostatic pressure test requirements:

IS 15801 Key Annexes, Tables & Specifications Summary

1. Allowable Maximum Operating Pressures (Table 6)

Applicable for PPR pipes at various temperatures and SDRs:

Pressure decreases with temperature rise; consult full table for intermediate values.

2. Pipe Outside Diameter, Tolerance & Ovality (Table 1)

• Tolerance = 0.009 × DN (min 0.3mm), only positive.
• Ovality depends on DN ranges, e.g., for DN ≤ 75mm: 0.008 × DN.

3. Impact Strength Test Specimen Dimensions (Annex B, Table 7)

| Specimen Type | Outside Diameter (mm) | Wall Thickness (mm) | Length (mm) | Width (mm