DRAFT PRODUCT CERTIFICATION MANUAL FOR COMMENTS Our Ref: DDGE/22/IS 12818

Transcription

BUREAU OF INDIAN STANDARDS
(Eastern Region Office, Kolkata)
DRAFT PRODUCT CERTIFICATION MANUAL FOR COMMENTS
Our Ref: DDGE/22/IS 12818
Dated: 20 Feb 2014
Sub: Draft manual for IS 12818
This has reference to CMD circular CMD:1/31 dated:11 Nov 2013 on the above subject. In this connection,
please find enclosed the draft product certification manuals as per details below:
UNPLASTICIZED POLYVINYL CHLORIDE (PVC-U) SCREEN AND CASING PIPES FOR
BORE/TUBEWELLS
Kindly examine the draft product certification manual and forward your comments on the draft to ERO at
ero@bis.org.in , in the format given below:
Sl no
Clause no/page no
Comments
Last date for comments: 05 March 2014.
(Product Certification Officer)
ERO
PM/IS 12818
Revision Number 00
Effective Date
PRODUCT MANUAL
ON
UNPLASTICIZED POLYVINYL CHLORIDE (PVC-U)
SCREEN AND CASING PIPES FOR
BORE/TUBEWELLS
BUREAU OF INDIAN STANDARDS MANAK
BHAWAN,
9, B.S. ZAFAR MARG, NEW DELHI-110 002
PRODUCT MANUAL ON UNPLASTICIZED POLYVINYL CHLORIDE
(PVC-U) SCREEN AND CASING PIPES FOR BORE/TUBE WELLS AS PER
IS 12818
PREPARED BY : GHBO
APPROVED BY
Amendment Sheet:
To ensure that this Product Manual contains a complete record of Amendments, this Amendment sheet
shall be maintained in the Product Manual.
AMENDMENT
NO.
DATE
PAGE NO.
DATE
(PVC-U) SCREEN AND CASING PIPES FOR BORE/TUBE WELLS AS
PER IS 12818
PREPARED BY : GHBO
APPROVED BY
Foreword
This Indian Standard (Second Revision) was adopted by the Bureau of Indian Standards, after the
draft finalized by the Plastics Piping Systems Sectional Committee had been approved by the Civil
Engineering Division Council.
This standard was first published in 1989 and revised in 1992. In this revision, following major
modifications have been made:
a) New class of pipes 'Deep Well Pipes' has been included,
b) Two new sizes 35 mm and 115 mm have been included,
c) Requirements for resistance to external blows at O°C, thread dimensions, thread profile,
sealing ring and opening area have been modified,
d) Vicat softening temperature value has been aligned with IS 4985 : 2000 'Unplasticized PVC
pipes for
potable water supplies - Specification', and
e) Tolerances on effective and segmental lengths of pipes have been modified as per current
manufacturing practices.
For guidance on methods of laying and jointing of PVC-U pipes and fitting systems, including
storage reference may be made to IS 7634 (Part 3): 2003 'Plastic pipes selection, handling, storage
and installation for potable water supplies - Code of practice: Part 3 Laying and jointing of PVC-U
pipes'.
The trapezoidal threads specified in this standard deviate from IS 7008 (Part 1) : 1999' ISO metric
trapezoidal screw threads: Part 1Basic profile and maximum material profile (second revision)' for
the following reasons:
a) The threads depth specified in IS 7008 (Part I) would result in an unacceptable reduction in
wall thickness.
b) The flat metric trapezoidal thread specified in IS 7008 (Part 1) would give rise to problems in
pipe assembly since the flank diameters would not intersect the profile in the middle of the
flank.
The thread series specified in IS 7008 (Part 1) is not compatible with the pipe diameters specified in
this standard.
PER IS 12818
PREPARED BY : GHBO
APPROVED BY
Table of Contents:
Contents
Title
Amendment Sheet
Section
Page
1
Foreword and Scope
2
Product Description
Section –I
4
Raw Materials/Components
Section - II
9
Manufacturing Process & in process Control
Section - III
10
Certification Criteria
Section – IV
11
Inspection and Testing
Section - V
19
PER IS 12818
PREPARED BY : GHBO
Section I :
APPROVED BY
Product Description
Description of Product(s)
1.1 General
The main use of these types of pipe is in transportation of water in general and use in bore well and
also in tube well in particular. Pipes made from cast iron, nodular iron and fabricated steel are in use
for a long time in various applications. UPVC pipes are now in increased use as an alternate to cast
iron, ductile iron and steep pipes. UPVC pipes are highly economical in comparison to pipes made
from other materials. Plastic pipes offer high corrosion resistance to aggressive chemical media.
Moreover, due to very smooth surfaces, the pipes are not prone to crust formation on the internal
surface, which can have a detrimental effect on the water carrying capacity of the pipe. Ease of
handling due to lightweight, and ease of laying and installation are other advantages. Plastic lends
itself to extrusion, which has made possible uninterrupted production of pipes in continuous lengths.
But, UPVC pipes having a fair amount of rigidity cannot take undue bends. Therefore, although made
in continuous lengths, the pipe has to be cut into convenient lengths before they can be joined and
laid into a pipeline.
UPVC pipes have their negative features as well. They require great care during laying. They are
susceptible to damages when laid above ground level, and also due to impacts and external blows.
1.2 Classification
UPVC Screen and Casing Pipes for Bore wells /Tube wells are broadly classified as Ribbed screen,
Plain screen and Plain casing pipes. Ribbed screen, Plain screen and Plain casing pipes are generally
produced in nominal diameter from 35 mm to 400 mm .The following definitions will be applicable
for different category of pipes.
Ribbed Screen Pipe - Pipe with external longitudinal ribs and transverse (perpendicular to pipe axis)
slots. This shall be designated as RMS pipe and RDS pipe.
Plain Screen Pipe - Plain surface pipe with transverse slots. This shall be designated as PMS pipe
and PDS pipe.
Casing Pipe - Solid wall plain surface pipe, used as extension pipe to the screen pipe. Casing pipes
are classified into those suitable for shallow, medium and deep depth wells as under:
PRODUCT MANUAL ON UNPLASTICIZED POLYVINYL
CHLORIDE (PVC-U) SCREEN AND CASING PIPES FOR
BORE/TUBE WELLS AS PER IS 12818
PREPARED BY : GHBO
APPROVED BY
a) CS Pipe : Shallow well casing pipes suitable for wells with depths upto 80 m
b) CM Pipe: Medium well casing pipes suitable for wells with depths above 80 m and upto 250 m
c) CD Pipe: Deep well casing pipe suitable for wells with depths above 250 m and upto 450 m
1.3 COLOUR
The pipe shall be of regular blue colour throughout. Slight colour deviation is permissible.
1.4 DESIGNATION
Pipe shall be designated by its type, whether ribbed medium well screen (RMS), ribbed deep well
screen (RDS), plain medium well screen (PMS), plain deep well screen (POS) or casing (CS or CM
or CD) followed by its nominal diameter DN, slot width and length of the pipe.
Example - Ribbed screen pipe of DN 200 with slot width 1.5mm and length 2 000 mm shall be
designated as: RMS 200 x 1.5 x 2000.
1.5 Dimension
The terminology of Nominal Size, Diameters and Wall Thickness is as explained from cl.3.4 to
cl.3.14 of IS 12818:2010.
The dimension of pipe is given in cl.7 of IS 12818:2010.
Wherever applicable Ribs provided on pipe should conform to Cl.7.3 of IS 12818:2010.
Dimensions and layout of Slots on screen pipe shall be as indicated as per Cl.7.5 of IS 12818:2010.
Threading of Screen and Casing pipe shall conform to cl.8 of IS 12818:2010.
1.6 Tests
1.6.0 General
The tests listed at 1.6.1to 1.6.7 be carried out on casing pipes and plain/ribbed pipes produced for the
manufacture of screen pipes before cutting slots.
1.6.1 Visual Appearance
The internal and external surfaces of the pipe shall be smooth, clean and free from other defects.
Slight shallow irregularities in the wall thickness shall be permissible provided the pipe remains
within permissible limits. The ends shall be clean, smoothly cut and reasonably square to the axis of
the pipe.
PREPARED BY : GHBO
1.6.2
APPROVED BY
Internal Diameter
A test mandrel of diameter as specified below, of 100 mm length, shall pass smoothly through the
pipe:
DN
Diameter of
Test Mandrel,
mm
35
40
50
80
100
115
125
150
175
200
250
300
350
400
33
39
50
77
94
105
1I8
139
165
188
236
281
345
390
1.6.3 Density
When tested by the method described in IS 12235 (Part 14), the density of the material of the pipe
shall be between 1.40 and 1.46 g/cm.
1.6.4 Resistance to External Blows at °C
When tested by the method described in IS 12235 (Part 9), the pipe shall have a True Impact Rate of
not more than 10 percent. The total mass of the striker and height of free falI shall correspond to the
values given in Table 14.
NOTE - The test shall be carried out on the plain/ribbed portion of the pipe taken at least 100 mm
away from the root of the socket
1.6.5 Tensile Strength
When tested by the method described in IS 12235-(Part 13), the average tensile strength of two test
specimens cut longitudinally from the same pipe at maximum load shall be not less than 45 MPa.
NOTE - The specimen for the test shall be prepared from a section of the pipe heated to a
temperature of 125°C to 130°and subsequently flattened and machined.
PREPARED BY : GHBO
APPROVED BY
1.6.6 Vicat Softening Temperature
The Vicat softening temperature shall not be less than 80°C when tested by the method described in
IS 12235 (Part 2).
NOTE - The test may be done on a test piece cut from a sample of the pipe used for some other test
(such as density or resistance to external blows) as long as that sample has not been subjected to
conditions that could influence the Vicat softening temperature. The specimen shall be supported
on a suitable concave surface of radius equal to that of the sample pipe, ensuring support on all
ends.
1.6.7 Effect on Water
The pipes shall not have any detrimental effect on the composition of water flowing through them.
The pipes shall meet the requirements/tests specified in 10.3 of IS 4985, when tested by the method
described in IS 12235 (Part 4).
1.7
SAMPLING AND CRITERIA FOR CONFORMITY
1.7.1 Acceptance Tests
The scale of sampling and criteria for conformity of a lot for acceptance tests specified in Cl.7.8 and
Cl.9.1 to Cl.9.4 shall be as given in Table 15 and for test under Cl.9.5 as given in Cl.10.1.6.
1.7.1.1 All pipes, in a single consignment, of the same type (screen or casing), same size and
manufactured under essentially similar conditions, shall constitute a lot.
1.7.1.2
For ascertaining conformity of the lot to the requirements of the specification, samples
shall be tested from each lot separately.
1.7.2 Type Tests
The tests are intended to prove the suitability and performance of pipes whenever there is a change in
the composition, size and type of pipe as well as in the method/technique in the manufacturing
process. Tests specified in Cl.9.5, Cl.9.6 and Cl. 9.7 shall be taken as type tests.
1.7.2.1
However, even if no change is envisaged, at least one sample from each size and type
produced during the period shall be subjected to type test once in six months.
PREPARED BY : GHBO
APPROVED BY
1.8 List of referred Indian Standards for Raw Materials/Components and test methods
IS No.
Title
554: 1999
Pipe threads where pressure tight joints are made on the threads - Dimensions,
tolerances and
designation (fourth revision)
4669: 1968
Methods of tests for polyvinyl chloride resins
4905: 1968
Methods of random sampling
4985:2000
Unplasticized PVC
pipes
for
potable water
supplies
Specification (third revision)
10148: 1982
Positive list of constituents of
polyvinyl chloride and its
copolymers for safe use in contact
with foodstuffs, pharmaceuticals
and drinking water
10151 : 1982
Specification for polyvinyl chloride
(PVC) and its copolymer for its safe
use in foodstuffs, pharmaceuticals
and drinking water
12235
Thermoplastics pipes and fittings
- Methods of test:
(Part 1): 2004 Measurement of dimensions (first
revision)
(Part 2) : 2004 Determination of vicat softening
temperature (first revision)
(Part 4) : 2004 Determining the detrimental effect
on the composition of water (first revision)
(Part 9): 2004 Resistance to external blows
(impact resistance) at 0° C (round- the-clock method) (first revision)
(Part 13): 2004 Determination of tensile strength and elongation
.
(Part 14): 2004 Determination of density/relative density (specific gravity) (first revision)
PREPARED BY : GHBO
APPROVED BY
CHECK-LIST FOR SCRUTINY OF APPLICATIONS AT THE COUNTER
(to be checked at the time of receipt of Application)
Sl.
REQUIREMENT
YES /
No.
NO
1. Whether the application form is as per BIS standard format and filled completely with no
column left as blank?
2.
Whether the application is signed and stamped?
3.
Whether the application is accompanied with requisite fee (DD or evidence of transfer through
RTGS)?
4.
Whether the application is accompanied with check list?
5.
Whether the application is accompanied by all documents as per “the list of documents to be
attached”? (Please see Annex A, Annex A-1, Annex A-2, Annex A-3 and Annex B)
6.
In case the application is under "simplified procedure", is the test report attached with
application and is not older than one month from date of submission of application?
Notes:
1. If the application is found to be complete, it shall be recorded and acknowledgement issued to the
applicant across the counter.
2. If the application is found to be incomplete or deficient, the deficiencies shall be clearly communicated
to the applicant in writing and acknowledgement obtained across the counter.
3. The application shall, then, be marked to the Head of the Branch Office, immediately.
PREPARED BY : GHBO
APPROVED BY
CHECK-LIST FOR SCRUTINY OF APPLICATIONS BY CONCERNED OFFICER IN THE BO
(to be checked at the time of receipt of Application)
Sl.
REQUIREMENT
YES /
No.
NO
1. Whether the application is complete in all respects, including the availability of requisite
infrastructure for manufacturing and testing as per the Indian Standard? (Please see Checklist attached as Annex B)
2.
Whether the test report(s) attached with the application has / have been submitted within the
specified time norms (applicable in case of simplified procedure)?
3.
Whether the test report(s) is / are from BIS or BIS recognized laboratory(ies) only?
4.
Whether the test report(s) show conformity of the sample(s) tested to the relevant Indian
Standard(s)?
5.
Whether all the requirements as per the relevant Indian Standard(s) have been tested?
6.
Whether, in case of application under the Foreign Manufacturers’ Certification Scheme,
additional requirements, as given in Annex C, have been checked and found in order?
Note - After scrutiny of the application, the concerned Officer shall communicate the deficiencies, if any,
to the applicant and also indicate the date on which the preliminary / verification inspection is
proposed to be carried out, clearly indicating that all deficiencies shall have to be completed by
the applicant within the stipulated period in order to enable the BIS officer to verify the same
during
the
preliminary
/
verification
inspection.
PREPARED BY : GHBO
APPROVED BY
LIST OF DOCUMENTS TO BE ATTACHED WITH APPLICATION
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Title of Document
Check-list (Please see Annex B)
In case the application is filed under “simplified Procedure”, the test report(s) in original from BIS
or its recognized laboratories for all the requirements of the product and, where applicable, of raw
material(s)/ component(s)
Document of Central/State Government (e.g. Registration Certificate, Memorandum of Articles,
etc) authenticating the address and purpose of the establishment of the manufacturing unit for
which the application is made for grant of licence.
In case the applicant applies as SSI unit, copy of valid Registration Certificate from the Local /
State authority or from a Chartered Accountant?
In case the application is signed by the authorized signatory of the applicant, authorization letter
from CEO in the name of the authorized signatory.
Process Flow-chart covering all processes of manufacture (from raw material to finished product
stage), including details of in-process controls at each stage, even for those stages which have
been outsourced?
Complete list of manufacturing machinery, clearly indicating the name of the machinery, the
details of the process for which it is used, its capacity and quantity in Annex A-1.
In case some of the manufacturing processes are outsourced, provide details of such processes
and the controls exercised by you before receipt of such material/components, etc. Also attach
an authenticated copy of the agreement.
Complete list of testing facilities, clearly indicating the name of the equipment, the test for which it
is used (mention clause No. of the Indian Standard), range / least count / accuracy of the test
equipment, calibration status and quantity in Annex A-2.
Note: Model lists of testing facilities for some of the Indian Standards already covered under
product certification are available on the BIS website and may be referred. However, for other
Indian Standards, you are advised to study the relevant Indian Standard(s) and / or contact the
concerned Branch Office of BIS for guidance.
Copies of calibration certificates of testing equipment valid at least till 3 months of acceptance of
application
Where applicable, ‘consent letter’ from BIS recognized laboratory (for requirements which have
got to be and / or are proposed to be got tested from outside lab for which the applicant does not
hav e in-house test facilities).
Plant Layout clearly indicating location of manufacturing machinery, lab, office, workshop,
amenities, storage area, etc., available in the factory premises, with the application?
Appointment letter of QC personnel indicating names, experience, qualifications, date of
appointment and also attach a copy each of the qualification certificates
Copy each of the test reports/suppliers’ test certificates for each of the raw materials /
components.
Copy of in-house or independent test report for the product covering all requirements as per the
relevant Indian Standard
In case application is under simplified procedure, an undertaking from the applicant on his letterhead (see Annex A-3) that the licence if granted to him shall be put under Stop Marking by BIS
if the verification sample(s) drawn during verification visit of the BIS officer prior to grant of
licence fail to conform to the Indian Standard. In case the licensee does not take corrective
actions, informs BIS and offers two improved lots to BIS for inspection and testing within one
month of the date of Stop Marking, the licence shall be processed for cancellation and no further
chance would be given to the licensee
Page
PREPARED BY : GHBO
APPROVED BY
Section II:
2.0 Raw Materials/Components:
1. PVC Resin: The monomer content (VCM content) in the PVC resin shall be within
limit specified in Cl.3.4.1 of IS 10151 and K-value of resin should be 64 or greater
when tested in accordance with IS 4669.
2. Calcium Carbonate:
3. Titanium Dioxide:
4. One Pack Stabilizer:
5. Colour (Blue):
6. Wax
The raw material from which the pipe is produced shall consist substantially of unplasticized
polyvinyl chloride to which may be added only those additives that are needed to facilitate
production of sound and durable pipe of good surface finish and mechanical strength under
conditions of use. None of these additives shall be used, separately or together, in quantities
sufficient to constitute a toxic, organoleptic or microbial growth hazard or to materially
impair the fabrication or welding properties of the pipe, or to impair the chemical, physical
or mechanical properties (in particular long-term mechanical strength and impact strength) as
defined in this standard. The additives to be used shall be selected from IS 10148 and shall
be uniformly dispersed.
2.1 Sealing Rings made of elastomeric material such as EPDM and of appropriate diameter
to ensure secured joint between pipes are used for pipes of nominal sizes DN 100 to 400.
These sealing elements shall have shore hardness 65±5 and dimension as per Table 13 of IS
12818:2010.
PREPARED BY : GHBO
APPROVED BY
Section III: Manufacturing Process and in-process Quality Controls
3.0 General
UPVC pipes are made by extrusion process. This is possible due to the flexibility of the
plastic material when heated to a high temperature and solidification when cooled. The
present day technology permits control of dimensions to close tolerances. Production of
UPVC pipes consists of plasticizing and homogenizing the PVC compound and shaping it
into pipe in an extruder. The PVC resin and the additives are mixed in a heater/cooler mixer
to form the PVC compound. Mixing is an important stage of the manufacturing process, and
has an impact on classification of pipes. Thus formed compound is fed into the extruder
through a spiral flow conveyer and hopper. The compound gets molten in the heating zone of
the extruder, which is then extruded into pipes passing through a mandrel/die arrangement.
Normally, single screw or twin-screw type extruders are used. Single screw extruders are
used for producing small size pipes with thick wall thickness. Twin-screw extruders ensure
good homogeneity of the blend, can produce large sizes and thickness, and have higher
productivity. Different mandrel/die combinations are used for different pipe sizes. In the
vacuum sizing/pressure tank, the dimensions are controlled to within the tolerances required.
The pipe is then passed through chilled water in a spray tank where the pipe attains its
rigidity. The extruded pipe is passed through a traction (also called hauling) arrangement to
extract the pipe at a regulated speed. This also controls the dimensions of the pipe.
The pipes are then cut to size in a cutter. Since the cutter platform moves with the extruded
pipe, cutting process does not hinder the extrusion process.
PREPARED BY : GHBO
APPROVED BY
A typical process flow chart is as given below:
3.1 PROCESS FLOW CHART FOR UPVC PIPES
MIXING OF RAW INGREDIENTS IN HOT MIXER VESSELS (PVC
RESIN + ADDITIVES)
BLENDED COMPOUND COOLING AT COOLER MIXER VESSELS
VIBRATOR CONVEYOR
SPRING HOPPER
EXTRUDER HOPPER
EXTRUDER BARREL
DIE HEAD
SIZER(COOLER)
COOLING SPRAY TANK
HAUL OFF
CUTTING UNIT
TILTING UNIT
INSPECTION STOCK YARD
FINAL INSPECTION AND TESTING
SCRAP YARD(IF FAILS
SCREEN PRINTING
DESPATCH
(IF PASS)
SCREEN PRINTING
PREPARED BY : GHBO
APPROVED BY
3.2 Manufacturing Machinery:
Twin screw extruder is one of major manufacturing machinery for production of UPVC pipe
and a typical list of manufacturing machineries for UPVC Screen and Casing pipe for
borewell/Tubewell is as given below:
Sl No.
Machinery
Make
Capacity
Nos.
Twin screw extruder, auto temp. controller & synchronized
speed control.
Die Head
35-400 MM
Die Bushes
35,40,50,80,100,115,125,150,175,200,250,300,350,400
MM
Die Mandrels
35,40,50,80,100,115,125,150,175,200,250,300,350,400
MM
Pressure Sizer
35,40,50,80,100,115,125,150,175,200,250,300,350,400
MM
Cooling Tank
Haul Up (Traction)
Cutting Unit
Titling Unit
Air Compressor
High Speed Mixture
High Speed Mixture
Cooling Tower
Generator
Electronic Balance
Grinder
Pulveriser
Slotting Machine with Blades for Screen pipe
Depending on availability of the Die head ,Dia Bushes ,Dia Mandrels and Pressure Sizer
with the manufacturer ,Scope of BIS Certification Marks Licence may be determined.
Remarks
PREPARED BY : GHBO
APPROVED BY
Section IV: Certification Criteria
4.0 General
4.1 Identification of Critical Requirements of IS 12818:2010
To be decided by committee.
4.2 Scheme of testing and Inspection:
DOC:5T1/12818/3 August 2011
SCHEME OF TESTING AND INSPECTION
FOR CERTIFICATION OF UNPLASTICIZED PVC SCREEN
AND CASING PIPES FOR BORE / TUBE WELL
ACCORDING TO IS 12818:2010
(Second Revision)
LABORATORY- A laboratory shall be maintained which shall be suitably equipped and staffed,
where different tests given in the specification shall be carried out in accordance with the
methods given in the specification. All testing apparatus shall be periodically checked and calibrated
and records of such checks/calibration shall be maintained.
TESTRECORDS-All records Qf tests and inspection shall be kept in suitable forms approved
by the Bureau. Copies of any records and other connected papers that may be required by
the Bureau shall be made available at any time on request. .
QUALITYCONTROL- It is recommended that as far as possible, Statistical Quality Control
(SQC) methods may be used for controlling the quality of the product during production as
envisaged in this scheme [See IS 397 (Part I)to IS397 (Part 4)J.In addition, efforts should be
made to gradually introduce a Quality Management System as per IS/ISO9001.
STANDARDMARK - The Standard mark, as given in Column (1) of the First Scl'1edule of
the licence, shall be applied indelibly by stenciling / screen printing / transfix labels /
engraving provided always that the pipe conforms to all the requirements 9f the specification.
In case the mark is applied by engraving, it shall be applied in such a manner that it does not
impair the strength and dimensional requirements of the pipe in any way.In case of any nonconfor.mity, standard mark shall be completely removed using suitable method (s),from the
pipes.
PREPARED BY : GHBO
APPROVED BY
MARKINGS- In addition, each pipe shall be clearly and indelibly marked in:
a) Red colour for RMS,PMS and CS pipes;
b) Yellow colour for CM pipe, and
c) Green colour for CD pipes and RDS pipes with the
following information:
i.
Indication of the source of manufacture;
ii. Letters RMS,RDS,PMS, PDS, CS,CM or CD to denote ribbed medium
well
screen pipe, plain medium well screen pipe, plain deep well
screen pipe, shallow well casing pipe, medium well casing pipe or deep
well casing pipe as applicable;
iii.
iv.
v.
vi.
vii.
diameter, in mm;
Slot size, in mm;
Effective length of pipe, in mm;
Licence No. (CM/L No- xxxxxxx);
Country of the origin
LEVELSOF CONTROL- The tests and inspections as indicated in Table 1 and at the levels
of control specified therein, shall be carried' out on the whole production of the factory
which is covered by this scheme and appropriate records and charts maintained in
accordance with paragraph 2 above. All the production which conforms to the Indian
Standard and covered by this licence shall be marked with the, Standard Mark.
CONTROL UNIT - For the purpose of this scheme, all the pipes
manufactured as a continuous run on one machine of one size and type of
pipe from one extrusion compound to a maximum of eight hour's duration
RETESTS- All the pipes taken for test shall satisfy the requirements of the specification for
acceptance of the control unit. If any pipe fails to satisfy the requirements of any test, another
sample consisting of twice the number of pipes tested initially, shall be taken from the same
control unit and tested. If there is any failure to satisfy the requirements of test on these
samples, control unit from which the pipes have been selected shall not be marked with
standard mark. In respect of all other clauses of the specification and at all stages of
manufacture, the factory shall maintain appropriate control and checks to ensure that their
product conforms to the various requirements of the specification
PREPARED BY : GHBO
APPROVED BY
REJECTIONS- A separate record shall be maintained giving information relating to the
rejection of the production not conforming to the requirements of the specification and the
method of its disposal. Such material shall in no case be stored together with that conforming
to the specification.
SAMPLES- The licensee shall supply, free of charge, the samples required in accordance
with the Bureau of Indian Standards (Certification) Regulations, J988, as subsequently
amended, from the factory or god owns. The Bureau shall pay for the samples taken by it
from the open market
REPLACEMENT- Whenever a complaint is received soon after the goods with Standard
Marks have been purchased and used, and if there is adequate evidence that the goods have
not been misused, defective goods or their components are replaced or repaired free of cost
by the licensee in case the complaint is proved to be genuine and the warranty period (where
applicable) has not expired. The final authority to judge the conformity of the product to the
Indian Standard shall be with the Bureau. The firm shall have complaint investigation
system as per IS/ ISO 10002.
STOP MARKING- The marking of the product shall be stopped under intimation to the
Bureau if, at any time, there is some difficulty in maintaining the conformity of their product
to the specification, or the testing equipment goes out of order. The marking may be
resumed as .soon as the defects are removed under intimation to the Bureau. The marking of
the product shall be stopped immediately if directed to do so by Bureau for any reason. The
marking may then be resumed only after permission by the Bureau. The information
regarding resumption of markings shall also.
PRODUCTION DATA - The licensee shall send to BIS as per the enclosed Proforma-1 to be
authenticated by a Chartered Accountant a statement of quantity produced, marked and
exported by him and the trade value thereof at the end of each operative year of the license.
PREPARED BY : GHBO
APPROVED BY
DOC:5T1/12818/3 August 2011
IS 12818: 2010
UNPLASTICIZED PVC SCREEN AND CASING PIPES FOR BORE/TUBE WELL
TABLE 1 LEVELS OF CONTROL
(Para 5.0 of the Scheme of Testing and Inspection)
Clause
Reference
4
4.1.1 &
4.1.2
TEST DETAILS
LEVELS OF CONTROL
Requirements
Reference
Composition
PVC Resin
IS 12818
IS 12818
IS 10151
IS 10148
& IS 4669
Colour
IS 12818
Each pipe
Dimensions
IS 12818
Table 1 to 10
Fig 1 to 4
10
Remarks
No. of
samples(Pieces)
Frequency
One
Each
consignment
No testing is
required
if
accompanied by
Test certificate.
Each Control
unit
Samples shall be
drawn on regular
intervals(See also
clause 5.2 of this
scheme)
5
7 & 9.2
8
Threading of
screen and
casing pipes
8.4
Sealing rings
IS 12818, IS
554,
Table 11 to 13
Fig 3A, 4A,
3B
IS 12818
-d0-d0-
-doEach size in a
consignment
-doEach
consignment
shall
be
accompanied by
a
test
certificate.
Additionally the
firm shall make
random sample
checks before
accepting
the
consignment. In
case of
PREPARED BY : GHBO
9.1
Visual
appearance
9.3
Density
9.4
Resistance to
External blows at
0 deg C
9.5
APPROVED BY
IS 12818
IS 12818
IS 12235(Part 14)
3
IS 12818
Table 14
IS 12235 (Part 9)
Sufficient to
complete 14 or
42 strikes as
applicable
IS 12818
IS 12235(Part 13)
Failure the
consignment shall
be rejected.
Each pipe
2
Each Control
unit
Non conforming
pipes shall be
rejected.
-doSee note under
clause
9.4 of the standards
-do-
Tensile Strength
9.6
IS 12818
IS 12235(Part 2)
One sample
Vicat Softening
Temperature
9.7
Effect on water
IS 12818
10.3 of IS 4985,
IS 12235(Part 4)
Once in 3
months
See note under
clause 9.5 of the
standard
See note under
clause
9.6 of the standard
One sample
Once in 3
months
PREPARED BY : GHBO
APPROVED BY
PROFORMA – 1
PROFORMA FOR OBTAINING PRODUCTION DETAILS
Period covered
Name of Licensee
CM/L No.
Name of articles(s)
IS No.
Grade/Type/Size/Variety/Class/Rating
1.1 Brand/Trade/Name(s)of BIS Certification Marked Products
2.0 Total production of the articles(s)
Licensed for certification marking
2.1 Total production of the article(s)
Conforming to Indian Standard
3.0
Production covered with BIS
Certification Mark and its Value
a)Quantity
b)Value(Rs.)
3.1 Brand Name used on Production covered under BIS Certification Mark
3.2 Calculation of marking fee on unit-rate basis; Marking fee per unit
a)
unit
b)
Quantity covered with BIS Certification Mark
c) Marking fee rounded off in whole rupees as obtained by applying unit rates given in
(a) on quantity given in (b)
Note: In case a clause is not applicable, suitable remarks may be given against it.
4.0 Quantity not covered with BIS Certification Mark. If any, and the reasons for
Such non-coverage
4.1 Brand name under with non certified goods were sold
5.0 Quantity Exported with BIS Standard Mark and its value
5.1 Brand Name under which BIS Certified goods are exported
6.0 Authentication by Chartered Accountant
PREPARED BY : GHBO
APPROVED BY
4.3 Marking Fee rates
Unit=1Tonne
Rs.86.40 per unit for all quantity with minimum marking fee Rs.32200.00 for SS
&Rs.39200.00 for LS
4.4 Grouping Guidelines if any
Ref: CMD - 111/16:12818
18 February 2013
Sub: Grouping- Guidelines for Unplasticized Polyvinyl chloride (PVCU) screen and casing pipes for Bore/Tube wells as per IS 12818:2010 for
Grant of Licence / Inclusion of New varieties.
IS 12818:2010 covers the following sizes and types of PVC-U screen and
casing pipes for bore/tube wells:
(a) Sizes: DN 35mm to DN 400mm.
"
(b) Designation: RMS, RDS, PMS, PDS, CS, CM, CD.
In order to adopt rationalized approach for grant of license and inclusion
of additional varieties covered in the specification the following grouping
guidelines shall be considered.
Designation
based on type
RMS
RDM
PMS
PDS
CS
CM
CD
Sizes Group
Group-1
DN 35mm to DN 80mm
DN 35mm to DN 80mm
-
Group-2
DN 100mm to DN 175mm
Group-3
DN200mm to DN 400mm
For the purpose of grant of license as well as inclusion of additional sizes/designation in the existing license at least on
sample from each group and each designation shall be tested for complete requirements of the specification. It shall
however be ensured that the applicant/licensee has got the complete manufacturing as well as testing facilities for the
sizes and designation required to be covered in the scope of the license.
PREPARED BY : GHBO
APPROVED BY
4.5 Guidelines for writing scope of licence:
Scope of licence will be based on manufacturing and testing capability of the
manufacturer i.e availability of Die bushes/Die mandrels/pressure sizer for
Nominal diameter of pipes and also applicant sample(s) offered as per grouping
guidelines of CMD.
4.6 Guidelines for inclusion of new variety:
Inclusion of new variety shall be permitted based on manufacturing and testing
capability for these varieties and also on samples are offered for inclusion based
on grouping guideline.
4.7 Sample size including guideline for drawl of separate samples when samples
are required to be sent to different Labs.
Two pipes of 3 meters length are sufficient for complete test as per IS
12818:2010.
500 gms PVC resin may also be drawn in case of applicant sample(s).
It should be ensured that samples are of same batch for drawl of separate samples
to be sent to different Labs.
4.8 Manner of sealing sample(s):
For smaller Nominal Diameter pipes tags having information about batch no. of
sample, code no and signature of inspecting officer may be sealed by BIS Brass
seal using sealing wax.
In case of larger Nominal Diameter of pipes Inspecting officer may give above
information on the pipe and also signed over pipe.
4.9 Remnants of sample are non returnable and to be kept in Lab for a fixed
period (generally kept for 3 months) and then to be scraped.
4.10 A separate record shall be maintained giving information relating to the
rejection of the production not conforming to the requirements of the
specification and the method of its disposal. Such material shall in no case be
stored together with that conforming to the specification.
4.11 Recycling/Reprocessed (Manufacturer own material) is permissible,
however, quantity of rework material used to be declared by the manufacturer.
4.12 Market Sample can be drawn for this product.
PREPARED BY : GHBO
APPROVED BY
Section V: Inspection and Testing
5.0 Ideal qualification of BIS inspecting officer for inspection of this product
should be Plastic technologist. However, Civil/Mechanical Engineer may also be
considered.
5.1Packing Material requirement for dispatch of sample(s)
Hessian Cloth/Polythene film (bubble plastic film)
5.2List of Test Equipment /Facilities with requirement and frequency of
calibration
To be provided by CL.
5.3 Status of test facilities in BIS Labs and OSLs with Testing Charges and
approximate time required for testing by BIS labs/OSLs:
These data are available on intranet.
5.4 Grant of Licence will be based on on independent testing basis. In case of
difficulty of transportation of full length of pipe to the Lab Length may be
tested at factory (Factory test permission may be taken from CA as per
OMPC ) and for other tests cut length of pipe may be sent to the lab for
independent testing.
5.5 Details of Tests to be carried out in the Factory in case of:
Applicant samples/ Verification Sample/Surveillance: During Preliminary/Surveillance
Inspection possible tests in one day may be carried out to assess the competency of Lab/QC
personnel and accuracy/workability of test equipments.
PVC resin as raw material is to be tested for VCM content and K-value.

DRAFT PRODUCT CERTIFICATION MANUAL FOR COMMENTS Our Ref: DDGE/22/IS 12818

Transcription

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