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IS 14333 : 1996(Reaffirmed 2007)
Edition 1.3(2004-12)
B U R E A U O F I N D I A N S T A N D A R D SMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
HIGH DENSITY POLYETHYLENE PIPES FOR SEWERAGE — SPECIFICATION
(Incorporating Amendment Nos. 1, 2 & 3)
ICS 23.040 : 13.060.30
Plastic Pipes and Fittings Sectional Committee, CED 50
FOREWORD
This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized bythe Plastic Pipes and Fittings Sectional Committee had been approved by the Civil EngineeringDivision Council.
Consequent to the fourth revision of IS 4984 in 1995 which covers HDPE pipes for water supplyonly, the technical committee felt the need to formulate a separate specification for HDPE pipesfor sewerage and industrial effluents. These pipes were earlier included in IS 4984 : 1987. Thecommittee while examining the various technical issues involved in the formulation of thisstandard was convinced that for the following major reasons, the HDPE pipes meant for watersupply cannot be recommended for sewerage and/or for industrial effluents:
a) That pipes meant for sewerage and for industrial effluents are subjected to highertemperature and chemical reactions during its life.
b) That the maximum specified allowable hydrostatic design stress for water supply pipes at30ºC for 50 years life and used in the calculation of minimum wall thickness needs modifica-tions in view of (a) above.
c) That pipes meant for water supply and for sewerage/industrial effluents need to be identifiedseparately.
In view of the reasons stated at (a) and (b) above, the committee in the absence of any establisheddata for the level of chemical reactions and the rise in temperature above 30ºC recommended aderating factor of 0.75 over the maximum allowable hydrostatic design stress of 4.0 MPa used forPE 63 grade material for water supply.
The technical committee also recommended that the HDPE pipes covered in this standard mayalso be used for industrial effluents provided the user shall establish suitability for the intendedapplication based on the chemical resistivity chart given in Annex D in consultation with themanufacturer of the pipes.
In the formulation of the standard a great deal of assistance has been derived from ISO/DIS 4427.‘Polyethylene pipes for water supply—Specification’. Annex D of this standard is based mainly onISO/TR 10358 ‘Plastic pipes and fittings — Combined chemical resistance classification table’. Theprovisions relating to ovality are based on ISO/DIS 11922 (Part 1) ‘Thermoplastic pipes for thetransport of fluids — Dimensions and tolerances’.
Regarding guidance for laying and jointing of polyethylene pipe, including storage and handling, areference may be made to IS 7634 (Part 2) : 1973 ‘Code of practice for plastic pipe work for potablewater supplies : Part 2 Laying and jointing polyethylene (PE) pipes’.
The composition of the technical committee responsible for the formulation of this standard isgiven in Annex E.
This edition 1.3 incorporates Amendment No. 1 (October 2000), Amendment No. 2(September 2003) and Amendment No. 3 (December 2004). Side bar indicates modification of thetext as the result of incorporation of the amendments.
For the purpose of deciding whether a particular requirement of this standard is complied with,the final value, observed or calculated, expressing the result of a test or analysis, shall be roundedoff in accordance with IS 2 : 1960. ‘Rules for rounding off numerical values ( revised )’. The numberof significant places retained in the rounded off value should be the same as that of the specifiedvalue in this standard.
IS 14333 : 1996
1
Indian Standard
HIGH DENSITY POLYETHYLENE PIPES FOR SEWERAGE — SPECIFICATION
1 SCOPEThis Indian Standard lays down therequirements for high density polyethylenepipes from 63 to 1 000 mm nominal diameter ofpressure rating 0.25 to 1.6 MPa in materialgrades of PE 63, PE 80 and PE 100, forsewerage applications.
2 REFERENCESThe Indian Standards listed below are necessaryadjuncts to this standard:
3 DESIGNATION3.1 Pipes shall be designated according to thepressure rating ( see 3.3 ) and nominal diameter( see 3.4 ). For example, PN 10 DN 200 indicatesa pipe having a pressure rating 1.0 MPa andoutside nominal diameter 200 mm.3.2 Grade of Material3.2.1 Pipes shall be classified according to thegrade of materials given in Table 1.3.2.2 The maximum allowable hydrostaticdesign stress ( r ) of a pipe is obtained byapplying the design coefficient of 1.25 ( Min ) tothe MRS value of the material, taking intoconsideration the temperature at which thepipe is to be designed for.3.2.3 The material grading shall be given bythe raw material supplier and in case of masterbatch, by the pipe manufacturer.3.3 Pressure RatingPipes shall be classified by pressure rating (PN)
corresponding to the maximum permissibleworking pressure at 30ºC, as follows:
3.4 Nominal Diameter (DN)The nominal diameter of pipes covered in thisstandard are:
5 MATERIALS5.1 High Density PolyethyleneHigh density polyethylene (HDPE) used forthe manufacture of pipes shall conformto designation PEEWA-45-T-003 or PEEWA-45-T-006 or PEEWA-50-T-003 or PEEWA-50-T-006 or PEEWA-57-T-003 or PEEWA-57-T-006 of IS 7328. HDPE conforming todesignation PEEWA-45-T-012 or PEEWA-50-T-012 or PEEWA-57-T-012 of IS 7328 may alsobe used with the exception that melt flowrating (MFR) shall be between 0.20 g/10 min to1.10 g/10 min (both inclusive).5.1.1 The specified base density between940.0 kg/m3 and 958.4 kg/m3 (both inclusive)shall be determined at 27ºC accordingto procedure prescribed in Annex A ofIS 7328 : 1992. The value of the density shallalso not differ from the nominal value by morethan 3 kg/m3 as per 5.2.1.1 of IS 7328 : 1992.
IS No. Title
2530 : 1963 Method of test for polyethylenemoulding materials and polye-thylene compounds
4905 : 1968 Methods for random sampling7328 : 1992 High density polyethylene
materials for moulding andextrusion ( first revision )
Material Grade MRS (Minimum Required Strength) of Material in MPA,
AT 20ºC, 50 Years
Maximum Allowable HydrostaticDesign Stress ( r ), MPa
At 20ºC At 30ºC For sewage and Industrial Efficient
(1) (2) (3) (4) (5) (6)
i) PE 63 6.3 5.0 4.0 3.0ii) PE 80 8.0 6.3 5.0 4.0
iii) PE 100 10.0 8.0 6.3 5.0
IS 14333 : 1996
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5.1.2 The MFR of the material shall be between0.20 g/10 min and 1.10 g/10 min (both inclusive)when tested at 190ºC with nominal load of 5 kgfas determined by method prescribed in 7 ofIS 2530 : 1963. The MFR of the material shallalso be within ±20 percent of the value declaredby the manufacturer.5.1.3 The resin shall be compounded withcarbon black. The carbon black content in thematerial shall be within 2.5 ± 0.5 percent andthe dispersion of carbon black shall be satisfac-tory when tested according to the proceduredescribed in IS 2530 : 1963.5.2 Anti-Oxidant
The percentage of anti-oxidant used shall not bemore than 0.3 percent by mass of finished resin.5.3 Reworked Material
The addition of not more than 10 percent of themanufacturer’s own rework material resultingfrom the manufacture of pipes of this standard ispermissible. No other reworked or recycledmaterial shall be used.
6 DIMENSIONS OF PIPES
6.1 Outside Diameter
The outside diameters of pipes, tolerance on thesame and ovality of pipe shall be as given inTable 2 ( see A-2 ).
Table 2 Outside Diameter, Tolerance and Ovality of Pipes
( Clause 6.1 )
6.2 Wall ThicknessThe minimum and maximum wall thickness ofpipes for all the three grades of materials,namely, PE 63, PE 80 and PE 100 shall be asgiven in Tables 3, 4 and 5 respectively ( see A-3 ).
6.3 Method of Measurement
6.3.1 The outside diameter of the pipe shall betaken as the average of two measurements takenat right angles for pipes up to 110 mm diameter.Alternatively and for higher sizes, the diametershall be measured preferably by using a flexibleP1 tape or a circometer, having an accuracy of notless than 0.1 mm. The wall thickness shall bemeasured by a dial vernier or ball endedmicrometer. The resulting dimension shall beexpressed to the nearest 0.1 mm.
NOTES1 The outside diameter shall be measured at a distanceof at least 300 mm from the end of the pipe.2 In the case of dispute, the dimension of pipes shall bemeasured after conditioning at room temperature for4 hours.
6.3.2 Ovality shall be measured at the manufac-turers end as the difference between maximumoutside diameter and minimum outsidediameter measured at the same cross-section ofthe pipe, at 300 mm away from the cut end. Forcoiled pipes re-rounding of pipes shall be carriedout prior to the measurement of ovality.6.4 Length of Straight Pipe
The length of straight pipe shall be 5 m to 20 m,as agreed between the manufacturer and thepurchaser. Short lengths of 3 m (minimum) upto a maximum of 10 percent of the total supplymay be permitted.6.5 Coiling
The pipes supplied in coils shall be coiled ondrums of minimum diameter of 25 times thenominal diameter of the pipe ensuring thatkinking of pipe is prevented.
7 VISUAL APPEARANCE
The internal and external surfaces of the pipesshall be smooth, clean and free from groovingand other defects. The ends of the pipes shall becleanly cut square with the axis to within thetolerances given below and free from deformity.Slight shallow longitudinal grooves or irregula-rities in the wall thickness shall be permissibleprovided that the wall thickness remainswithin the permissible limits.
8 PERFORMANCE REQUIREMENTS
8.1 Hydraulic Characteristics
When subjected to internal pressure creeprupture test in accordance with procedure
given in Annex B, the pipes under test shallshow no signs of localized swelling, leakage orweeping, and shall not burst during theprescribed test duration. The temperatures,duration of test and induced stresses for thetest shall conform to those specified in Table 6.8.2 Reversion Test
When tested according to the procedure given
at Annex C, the value of the longitudinal rever-sion shall not be greater than 3 percent.
8.3 Density
When tested from a composite sample ofminimum three pipes as per Annex A ofIS 7328 : 1992, it shall meet the requirement asgiven in 5.1.1.
Table 3 Wall Thickness of Pipes for Material Grade PE 63( Clause 6.2 )
All dimensions in millimetres.
Nominal Dia
Wall Thickness of Pipes for Pressure Ratings of
PN 2.5 PN 4 PN 6 PN 8 PN 10 PN 12.5 PN 16
DN Min Max Min Max Min Max Min Max Min Max Min Max Min Max
8.4 Melt Flow Rate (MFR)When tested from a composite sample ofminimum three pipes, as per IS 2530, at 190ºCwith nominal load of 5 kgf, MFR shall bebetween 0.20 g/10 min to 1.10 g/10 minutes.The MFR shall also be within 30 percent of theMFR of the material used in manufacturingpipes ( see 5.1.2 ).8.5 Carbon Black Content and DispersionWhen tested from a composite sample ofminimum three pipes, in accordance withIS 2530 : 1963, the carbon black content shallbe within 2.5 ± 0.5 percent and the dispersion ofcarbon black shall be satisfactory.
9 SAMPLING, FREQUENCY OF TESTS AND CRITERIA FOR CONFORMITY9.1 Type Tests9.1.1 Type tests are intended to prove thesuitability and performance of a new composi-tion, a new technique or a new size of a pipe. Suchtests, therefore, need be applied only when achange is made in polymer composition ormethod of manufacture, or when a new size ofpipe is to be introduced. Even if no change isenvisaged, type test shall be done at least once intwo years on each pressure rating of pipe of thehighest size manufactured during the period.9.1.2 Three samples of the same size and samepressure rating selected at random shall betested for compliance with the requirements ofthe type test, given in Table 6.9.1.3 If all the samples pass the requirementsof the type test, the type of the pipe underconsideration shall be considered eligible fortype approval.9.1.4 In case any of the samples fails in the typetest, the testing authority, at its discretion, maycall for fresh samples not exceeding the originalnumber and subject them to the type test again.If in repeat test, no single failure occurs, the typeof pipe under consideration shall be consideredeligible for type approval. If any of the samplesfails in the repeat tests, the type of pipe shall notbe approved. The manufacturer or the suppliermay be asked to improve the design and resubmitthe product for type approval.9.1.5 At the end of the validity period (normallytwo years) or earlier as may be necessary, thetesting authority may call for fresh samples for
type test for the purpose of type approval.9.2 Acceptance Tests9.2.1 Acceptance tests are carried out onsamples selected from a lot for the purpose ofacceptance of the lot.9.2.2 LotAll pipes of the same size, and same pressurerating and also manufactured essentially undersimilar conditions of manufacture, shall consti-tute a lot. For ascertaining conformity of the lotto the requirements of this specification,samples shall be selected in accordance withthe provisions as mentioned here in under andtested for compliance.9.2.3 Dimensional and Visual Requirements9.2.3.1 The number of test samples shall be inaccordance with Table 7.9.2.3.2 These pipes shall be selected at randomfrom the lot and in order to ensure the random-ness of selection, a random number table shallbe used. For guidance and use of randomnumber tables, 1S 4905 : 1968 may be referred.In the absence of a random number table thefollowing procedure may be adopted.Starting from any pipe in the lot count them as1,2,3,4......etc, up to r and so on where r is theintegral part of N/n, N being the number ofpipes in the lot and n is the number of pipes inthe samples. Every rth pipe so counted shall bewithdrawn so as to contitute the requiredsample size.9.2.3.3 The number of pipes given for the firstsample in col 3 of Table 7 shall be examined fordimensional and visual requirements givenin 6.1, 6.2 and 7. A pipe failing to satisfy any ofthese requirements shall be considered asdefective. The lot shall be deemed to have satis-fied these requirements, if the number ofdefectives found in the first sample are less thanor equal to the corresponding acceptance numbergiven in col 5 of Table 7. The lot shall be deemednot to have met these requirements if the numberof defectives found in the first sample is greaterthan or equal to the corresponding rejectionnumbers given in col 6 of Table 7. If, however, thenumber of defectives found in the first samplelies between the corresponding acceptance andrejection numbers given in col 4 and 5 of Table 7,the second sample of the size given in col 3 ofTable 7 shall be taken and examined for these
Table 6 Requirement of Pipes for Internal Pressure Creep Rupture Test( Clauses 8.1, 9,1.2 and B-4.3 )
Sl No.
Test Test Temperature0ºC
Test DurationMinimum Holding Time, h
Induced Stressin MPa
PE 63 PE 80 PE 100(1) (2) (3) (4) (5) (6) (7)
i) Type Test 80 165 3.5 4.6 5.5ii) Acceptance 80 48 3.8 4.9 5.7
IS 14333 : 1996
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requirements. The lot shall be considered to havesatisfied these requirements, if the number ofdefectives found in the cumulative sample is lessthan or equal to the corresponding acceptancenumber given in col 5 of Table 7; otherwise not.9.2.4 Hydraulic Characteristics, Reversion,Density, MFR and Carbon Black Content/Dispersion Tests9.2.4.1 The lot having satisfied dimensional andvisual requirements shall be tested for hydrauliccharacteristics, reversion, density, MFR andcarbon black content/dispersion requirements.9.2.4.2 A separate sample size for each of thetest, shall be taken as stipulated in Table 8 andselected at random from the sample alreadyexamined for dimensional and visual inspection.All the pipes in each of the sample size shall betested for compliance of the requirements forhydraulic characteristics (8.1), reversion (8.2)
Table 8 Scale of Sampling for Tests for Hydraulic Characteristics, Reversion,
Density, MFR and Carbon Black Content/Dispersion
( Clause 9.2.4.2 )
density (8.3), MFR (8.4), and carbon blackcontent/dispersion (8.5). The lot shall be con-sidered to have met the requirements of thesetests, if none of samples tested fails.
10 MARKING
10.1 Each straight length of pipe shall beclearly marked in indelible ink/paint on eitherend and for coil at both ends or hot embossed onwhite base every metre throughout the lengthof pipe/coil with the following information:
10.2 BIS Certification Marking
Each pipe may also be marked with theStandard Mark.
10.2.1 The use of the Standard Mark isgoverned by the provisions of the Bureau ofIndian Standards Act, 1986 and the Rules andRegulations made thereunder. The details ofconditions under which a licence for the use ofthe Standard Mark may be granted tomanufacturers or producers may be obtainedfrom the Bureau of Indian Standards.
ANNEX A( Clauses 5.1, 6.1 and 6.2 )
EXPLANATORY NOTES
A-1 MASTER BATCHWith the advancement in technologynatural (unpigmented) resin designation
PEEAA-45-T-003 or PEEAA-45-T-006 orPEEAA-50-T-003 or PEEAA-50-T-006 orPEEAA-57-T-003 or PEEAA-57-T-006 of IS 7328
Table 7 Scale of Sampling for Visual and Dimensional Requirements( Clauses 9.2.3.1 and 9.2.3.3 )
No. of Pipesin the Lot
SampleNo.
SampleSize
Cumulative Sample Size
Acceptance No. RejectionNo.
(1) (2) (3) (4) (5) (6)
Up to 150 FirstSecond
1313
1326
01
22
151 to 280 FirstSecond
2020
2040
03
34
281 to 500 FirstSecond
3232
3264
14
45
501 to 1 200 FirstSecond
5050
50100
26
57
1 201 to 3 200 FirstSecond
8080
80160
38
79
3 201 to 10 000 FirstSecond
125125
125250
512
913
10 001 to 35 000 FirstSecond
200200
200400
718
1119
No. of Pipes Sample Size(1) (2)
Up to 150 3151 to 1 200 51 201 to 35 000 8
a) Manufacturer’s name/Trade mark,
b) Designation of pipe ( see 3.1 ), and
c) Lot number/Batch number.
IS 14333 : 1996
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and PEEAA-45-T-012 or PEEAA-50-T-012 orPEEAA-57-T-012 of IS 7328 with the exceptionthat melt flow rating (MFR) shall be between0.20 g/10 min to 1.10 g/10 min (both inclusive)duly stabilized with antioxidants ( see 5.2 ) maybe compounded with suitable black master batchor processed directly after physical mixing withsuitable black master batch or processed directlyafter physical mixing with suitable black masterbatch in the pipe extruder for production of pipewhich shall conform to the performancerequirements of the pipes as specified in thisstandard ( see 8 ). The material of pipe to beproduced shall conform to requirements of 5.1.
A-2 TOLERANCE ON OUTSIDE DIAMETER AND MAXIMUM OVALITYA-2.1 The values specified for tolerance on out-side diameter have been calculated as 0.009DN, rounded off to the next higher 0.1 mm,subject to minimum of 0.3 mm. No negativetolerances are allowed.A-2.2 The ovality specified corresponds toGrade N of ISO/DIS 11922-1. Thermoplasticpipes for transport of fluids, dimensions andtolerances’. The basis for the values specified is:
A-3 WALL THICKNESS
A-3.1 The wall thickness of pipes are based onthe maximum allowable hydrostatic designstress (σ) of 3.0 MPa.
A-3.2 Minimum wall thickness s, in mm of thepipe have been calculated as follows androunded off for the next higher 0.1 mm.
where
A-3.3 Maximum wall thickness has beencalculated as follows:
NOTE — Considering operational problems, maximumwall thickness of pipes are considered around 60 mm.
ANNEX B( Clause 8.1 )
INTERNAL PRESSURE CREEP RUPTURE TEST
B-1 GENERALThe test shall be carried out not earlier than 24hours after the pipes have been manufactured.
B-2 TEST SPECIMENSA sample of pipe having free length betweenthe end fittings equal to ten times the outsidediameter but not less than 250 mm and notgreater than 750 mm, shall be taken for testingfrom each pipe to be tested.
B-3 APPARATUSEquipment permitting the application of a con-trolled internal hydraulic pressure to thespecimen which are immersed in a thermostati-cally controlled water-bath.
B-4 PROCEDUREB-4.1 The pipes shall be fitted with the lockingplugs at both ends in such a way that the axialforces coming from the internal pressure are
transmitted to the pipe. The pipe shall remainfree to move in longitudinal direction.B-4.2 Through a closable opening in one of thelocking plugs, the pipe shall be tilled with waterat ambient temperature. It shall be then put ina water bath at the test temperature of 80ºC(permissible deviation ±1ºC) and kept in the bathfor minimum one hour to adjust the temperature.B-4.3 The pressure in the pipe shall then beincreased to the test pressure ( p ) graduallyand without shock preferably within 10 to 30seconds in the bath whose temperature hasbeen adjusted in accordance with B-4.2. Thepressure with a permissible deviation of ± 2.5percent shall be maintained for the period laiddown in Table 6.The test pressure ( p ) shall be calculated asfollows from the minimum dimensions given inthe Tables 3, 4, 5 and the corresponding
a) For nominal outside diameters ≤ 75, thetolerance equals (0.008 DN + 1.0) mm,rounded to the next higher 0.1 mm, with aminimum value of 1.2 mm.
b) For nominal outside diameters > 75 and≤ 250, the tolerance equals 0.02 DNrounded to the next higher 0.1 mm.
c) For nominal outside diameters > 250, thetolerance equals 0.035 DN rounded to thenext higher 0.1 mm.
p = maximum permissible working pressurein MPa;
d = nominal outside diameter in mm; andσ = maximum allowable hydrostatic design
stress, that is 3.0 MPa.
a) For pipes with an outside diameter lessthan or equal to 355 mm, maximum wallthickness) = 1.1 × minimum wall thick-ness + 0.2 mm), rounded off to next higher0.1 mm.
b) For pipes with outside diameter equal toor greater than 400 mm, maximum wallthickness (= 1.15 × minimum wall thick-ness + 0.2 mm), rounded off to the nexthigher 0.1 mm.
s p d×2σ p+-----------------=
IS 14333 : 1996
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induced stress values given in Table 6.
where
B-5 ASSESSMENT OF RESULTS
The samples shall not show signs of localizedswelling or leakage and shall not burst duringthe prescribed test duration. The test showingfailure within a distance equivalent to thelength of end cap from the end shall bedisregarded and the test repeated.
ANNEX C( Clause 8.2 )
LONGITUDINAL REVERSION TEST
C-1 APPARATUSC-1.1 Air OvenThermostatically controlled at 110 ± 2ºC and iscapable of re-establishing this temperaturewithin 15 minutes after the introduction of testspecimen in the oven.C-1.2 Thermometer, graduated to 0.5ºCC-1.3 Test SpecimensEither 3 complete sections of pipe, approxima-tely 200 mm long, shall be taken as test pieces, orwhere the pipe diameter is greater than 200 mm,pieces of pipe of about 200 mm axial length andwith an approximate circumferential arc lengthof 200 mm shall be prepared by cutting. In suchcases, the entire circumference of approximately200 mm long section of pipe shall be divided intopieces measuring approximately 200 mm square.The direction of the pipe axis shall be marked onthe pieces. All pieces are required to be tested. Amark shall be scribed on the external surfaceapproximately 50 mm from each end of the testpieces in the axial direction of pipe (in the case ofcomplete section of pipe, the mark shall bescribed around the whole circumference). Thedistance between the two marks, lo (referencelength), shall be approximately 100 mm andshall be measured to the nearest 0.25 mm atambient temperature.
C-2 PROCEDUREC-2.1 Place the test pieces concave side up on aglass plate previously dusted with talcum, toensure that changes in length take place unimpe-ded. The test pieces shall not touch each other.
C-2.2 Set the oven temperature at 110 ± 2ºC. Theglass plate with the test pieces shall then beplaced in the oven heated to test temperature andcapable of maintaining continuous forced aircirculation. The test pieces shall be kept in theoven at the temperatures and for the periodsspecified below:
C-2.3 Remove the test pieces from the oven andallow to cool in air, without being moved at theambient temperature. Measure the minimumdistance between the two marks.
C-3 EXPRESSION OF RESULTS
C-3.1 For each test piece, calculate the longi-tudinal reversion, T, as a percentage, as follows:
where l0 and l1, are the distances in mm beforeand after the test.
C-3.2 The average value (arithmetic mean) of allthe test pieces shall be obtained and reported.
ANNEX D( Foreword )
CHEMICAL RESISTANCE CLASSIFICATION TABLE FOR HDPE PIPES AND FITTINGS
D-1 GENERALD-1.1 This Technical Report is a referencedocument and provides guidelines on classifica-tion of the chemical resistance of High densityPolyethylene (HDPE) pipe material to specifiedfluids over a range of temperatures (20ºC and60ºC). It is intended to provide information on
suitability of HDPE piping for the conveyanceof fluids.D.1.2 The preliminary chemical-resistanceclassification given in the annexed table is onlysuitable for use with pipes which are not subjec-ted to internal and external mechanical stresses(for example, those caused by internal pressure,
p = test pressure in MPa;s = minimum wall thickness in mm;
σ1 = induced stress in MPa; andd = outside diameter of pipe, in mm.
p2σ1 s d s –( )
---------------------=
WallThickness, S
Test Temperature
Periodof Stressing, t
mm ºC minUp to 8 110 ± 2 60 ± 1Over 8 up to 16 110 ± 2 120 ± 2Over 16 110 ± 2 240 ± 5
Tl0 l1–
l0--------------- 100×=
IS 14333 : 1996
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flexural stresses). In order to assess thebehaviour of pipes and fittings for conveyance offluids under pressure or in the presence of otherstresses, if the preliminary classification is S orL, it will be necessary to carry out further testsas specified in ISO 8584-1 and or ISO/TR 8584-2.D-1.3 To assess the tendency of a materialtowards environmental stress cracking, separatetests have to be carried out. Other properties ofthe pipe material (for example permeability) or ofthe fluid conveyed (for example toxicity,inflammability, etc,) should also be consideredseparately.D-1.4 The table summarizes the data given in anumber of chemical resistance tables at presentin use in various countries, derived from bothpractical experience and test results. Thisevaluation is based on values obtained byimmersion of high density polyethylene testspecimens in the fluid concerned at 20ºC or60ºC and atmospheric pressure, followed incertain cases by the determination of tensilecharacteristics.D-1.5 In the preparation of this appendix,assistance has been derived from the following:
D-2 EXPLANATION OF SYMBOLS AND ABBREVIATIONSD-2.1 Classification (Last Column in the Table)The following symbols are used to indicate thebehaviour of HDPE pipes in contact withchemical agents:
The pipes can be used for applications in whichthey are not subjected to pressure or otherstresses; for applications in which they areexposed to pressure, the final assessment shallbe on the basis of subsequent test underpressure.
HDPE pipes can be used for applications inwhich they are not subjected to pressure orother stress, but a case in which a certainamount of corrosion can be accepted. Forapplications in which they are exposed topressure, the final assessment shall be on thebasis of a subsequent test under pressure.
The pipes are seriously attacked. They shall notbe used for either pressure or non-pressureapplications. There is no point in conducting.tests under pressure as the pipes would becertain to fail these tests.
D-2.2 Description of Fluids
D-2.2.1 Nature of Chemicals ( Column 2 in theTable )
The fluids are listed by their most commonnames, including trivial and trade names, inalphabetical order, with some of the chemicals,synonyms are also listed, in the alphabeticalorder.
In some cases, further information on nature ofchemical is given, namely:
D-2.2.2 Characteristics of Chemicals ( Columns 3and 4 in the Table )
Melting point (m.p.) and boiling point (b.p.)in degree Celsius (ºC) are given whereverappropriate. The values refer to fluids oftechnical-grade purity at standard atmosphericpressure, unless otherwise stated.
D-2.2.3 Concentration of Chemicals ( Column 5in the Table )
The concentration and/or purity of the fluid isindicated, using the following symbols:
a) ISO/TR 10358-1993 — Plastics pipes andfittings — Combined chemical resistanceclassification table.
b) Chemical resistance or ‘Sclair’polyethylene resins from Du Pont, Canada.
c) Marlex (Phillips) — Low, medium andhigh density polyethylenes : properties— Processing.
S : Satisfactory resistance. No indication thatthe serviceability would be impaired.
L : Limited resistance, depending oncondition of use.
NS : Resistance Not Satisfactory. Not recom-mended for service applications underany condition.
LT COL P. K. MASANDSHRI R. N. SINHA, AEE ( Alternate )
Ministry of Defence, New Delhi
ENGINEERING DIRECTOR Tamil Nadu Water Supply & Drainage Board, MadrasCHIEF ENGINEER (WESTERN REGION) ( Alternate )
DEPUTY CHIEF ENGINEER Public Health Engineering Departmet, Government of Kerala, TrivandrumDR P. S. RANA
SHRI K. SUBRAMANIAM ( Alternate )Housing and Urban Development Corporation Ltd, New Delhi
SCIENTISTSHRI SUDHESH KUMAR SHARMA ( Alternate )
Central Building Research Institute (CSIR), Roorkee
SHRI K. L. KHANNASHRI VINAYAK V. SHEMBEKAR ( Alternate )
EPC Irrigation Ltd, Bombay
SHRI R. B. DOCTORSHRI R. A. PATEL ( Alternate )
Ahmedabad Municipal Corporation, Ahmedabad
DR H. C. MRUTHYUNJAYASHRI S. NARAINASWAMY ( Alternate )
Jain Plastic and Chemicals, Jalgaon
SHRIMATI SEEMA VAIDYASHRI A. SAMANTA ( Alternate )
Graphite Vicarb India Ltd, Nasik
DR DHANANJAY RAU Finolex Industries Ltd, PuneSHRI R. C. CHOUDHRY Office of the Chief Engineer, Public Health, Orissa, BhubaneshwarSHRI GULAM AHMED Public Health Engineering Zone, Government of Karnataka, KarnatakaSHRI RAJENDRA PRASAD
SHRI JAY KUMAR ( Alternate )Directorate General of Supplies & Disposals, New Delhi
SHRI V. K. JAIN Public Health Engineering Department, Government of Rajasthan, JaipurSHRI M. K. M. JOSHI ( Alternate )
CHIEF ENGINEER (DESIGNS) Central Public Works Department, New DelhiSUPERINTENDING ENGINEER (S & S) ( Alternate )
SHRI WILLIAM MENDONCA Supreme Industries Ltd, BombaySHRI H. D. YADAV ( Alternate )
SHRI G. K. LALCHANDANI Central Institute of Plastics Engineering and Technology, MadrasDR A. P. DAS ( Alternate )
SHRI D. K. SANYAL Calcutta Municipal Corporation, CalcuttaSHRI A. K. BISWAS ( Alternate )
DR S. M. PATEL Institute of Co-operative Management, AhmedabadDR M. K. PANDEY ( Alternate )
SHRI C. K. SHARMA RITES, New DelhiDIRECTOR (MATERIALS MANAGEMENT) Delhi Development Authority, New Delhi
SUPERINTENDING ENGINEER (DESIGNS) ( Alternate )SHRI K. P. NANAVATY Reliance Industries Ltd, Bombay
DR Y. N. SHARMA ( Alternate )SHRI O. P. RATRA Building Materials and Technology Promotion Council (Ministry of Urban
Development), New DelhiSHRI G. K. SRINIVASAN Vimplex India Pvt Ltd, MadrasDR S. SUNDERAMOORTHY
SHRI THIMU G. SHENBAGAWANDAM ( Alternate )Madras Metropolitan Water Supply and Sewerage Board, Madras
SHRI S. SUNDARAMSHRI H. N. PHADNIS ( Alternate )
KWH Heliplastics (India) Ltd, Bombay
SHRI VINOD KUMAR,Director & Head (Civil Engg)
Director General, BIS ( Ex-officio Member )
SecretarySHRI R. S. JUNEJA
Joint Director (Civil Engg), BIS( Continued on page 31 )
IS 14333 : 1996
31
( Continued from page 30 )Panel for Polyethylene Pipes, CED 50 : P4
Chairman Representing
SHRI KANWAR A. SINGH RITES, New Delhi
Members
SHRI V. K. SHARMASHRI M. S. DATT ( Alternate )
NOCIL, Bombay
SHRI K. L. KHANNASHRI V. V. SHEMBEKAR ( Alternate )
EPC Irrigation Ltd, Bombay
DR Y. N. SHARMASHRI JAGMOHAN BAMRI ( Alternate )
Reliance Industries Ltd, Bombay
DR H. C. MRUTHYUNJAYASHRI S. NARAINASWAMI ( Alternate )
Jain Plastic & Chemicals, Jalgaon
SHRI S. SUNDARAMSHRI N. N. PHADNIS ( Alternate )
KWH Heliplastics (India) Ltd, Bombay
SHRI S. PRAKASHSHRI ANAND PRAKASH ( Alternate )
DWS & SDU, New Delhi
LT COL P. K. MASANDSHRI R. N. SINHA ( Alternate )
Engineer-in-Chief’s Branch, Ministry of Defence, New Delhi
SHRI O. P. RATRA BMTPC, New DelhiENGINEERING DIRECTOR Tamil Nadu Water Supply & Drainage Board, MadrasCHIEF ENGINEER (SPG)
SUPERINTENDING ENGINEER (S & S) ( Alternate )CPWD, New Delhi
DR KIRTIVAN D. KOTLAN Manikya Plastichem, MysoreSHRI J. B. S. BAKSHI
SHRI R. K. KAPUR ( Alternate )Uniplas India Ltd, New Delhi
SHRI DILBARISH BAHADUR Inter-link Services Pvt Ltd, New Delhi
Bureau of Indian Standards
BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goods andattending to connected matters in the country.
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BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publications), BIS.
Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are alsoreviewed periodically; a standard along with amendments is reaffirmed when such review indicates that nochanges are needed; if the review indicates that changes are needed, it is taken up for revision. Users ofIndian Standards should ascertain that they are in possession of the latest amendments or edition byreferring to the latest issue of ‘BIS Catalogue’ and ‘Standards : Monthly Additions’.
This Indian Standard has been developed from Doc : No. CED 50 (5547)
Amendments Issued Since Publication
Amend No. Date of Issue
Amd. No. 1 October 2000
Amd. No. 2 September 2003
Amd. No. 3 December 2004
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AMENDMENTNO.4 JANUARY 2009TO
1S14333:1996HIGH DENSITY POLYETHYLENE PIPESFOR SEWERAGE — SPECIFICATION
(Page 2, Table 1, cd 1 to 4) — Insert the following new values at the end:
Table 1 Outside Diameter, Tolerance and Ovality of Pipes(Clause 6.1)
...—
Nominal Chrtside Diameter Tolerance OvalityDiameter mm mm