BIS Certification for High Density Polyethylene Pipes for Sewerage IS 14333

GET BIS CERTIFICATION FOR HIGH DENSITY POLYETHYLENE PIPES FOR SEWERAGE IS 14333:2022

BIS is a statutory institution established under the Bureau of Indian Standards Act,1986  to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country.

High density polyethylene pipes for sewerage product has been specified in IS 14333:2022 by Bureau of Indian Standards.

SCOPE :

1.1 This standard specifies the characteristics and requirements for polyethylene pipes intended to be used for following applications above or below ground:

a) Sewerage (pressure or non-pressure);

b) Industrial effluent; and

c) Industrial chemicals.

1.2 This standard covers polyethylene pipes from 63 mm to 2 500 mm nominal diameter of pressure rating from 0.20 MPa (2.0 bar) to 2.0 MPa (20.0 bar).

1.3 The operating temperatures of 10 °C, 20 °C, 27 °C, 40 °C, 50 °C and 60 °C for different service life are covered.

1.4 The reference temperature of 20 °C for 50 years of continuous stress is considered for the minimum required strength (MRS) of polyethylene base resin. The design stress at 20 °C is derived by dividing MRS by the overall service (design) coefficient, C which is 1.25 (Min) for all polyethylene pipes. This standard specifies overall service design coefficient of 1.25, 1.6 and 2.0 which shall be appropriately selected by the user/design engineer keeping in view the application to which the pipes are subjected to (see also Note 1).

NOTES

1 In IS 4984, which covers PE pipes for water supply for human consumption and raw water, the C value taken is 1.25. Further, the maximum allowable operating pressure at 27 °C has been obtained by applying a pressure reduction coefficient of 0.85.

2 In this standard, the allowable operating pressure of IS 4984 at 27 °C (for 50 years life) with service design coefficient

1.25 has been taken as reference. The maximum allowable operating pressure for an operating fluid temperature other than 27 °C and service life other than 50 years, can be derived as per 6.1.4.

1.5 For chemical resistance of polyethylene and its compatibility with various fluids and its performance in different general uses, reference shall be made to IS 16268/ISO TR 10358.

1.6 For pipes for non-pressure applications, PE pipes of stiffness (SN) value of 8 and above shall be used. Guidance on stiffness class of PE pipes is provided at Annex A.

1.7 This standard does not purport to give guidelines for designing and dimensioning of pipe lines.

RAW MATERIALS :

·       Polyethylene resin – Clause 5.2

·       Carbon Black Master batch – Clause 5.3

TESTING PARAMETERS :

·       Polyethylene Resin

·       Master Batch

·       Colour

·       Geometric Characteristics of Pipes (Visual Appearance, Length/ Coiling Dimensions)

·       Longitudinal Reversion Test

·       Carbon Black content and Dispersion

·       Melt Flow Rate

·       Oxidation Induction Time

·       Density

·       Tensile Strength for Butt – Fusion

·       Slow Crack Growth Rate Test

BIS CERTIFICATION IN INDIA

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