Prabha Energy Private Limited
PEPL/CBM/PR/M/07/PE_PIPE & Fittings
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SCHEDULE II
SCOPE OF SUPPLY
A SCOPE OF SUPPLY FOR HDPE PIPES
1.0 INTRODUCTION ABOUT PROJECT
The North Karanpura Coalfield is the western most and second largest (1230 km2) coal basin of the Hazaribagh, Palamu and Chatra districts of Jharkhand, India. It is situated about 60 km northwest of Ranchi and 20km SW of Hazaribagh. North Karanpura CBM Block (NK-CBM-2001/1) is a part of the North Karanpura Coal field covering an area of 340 sq. Kms. Subsequent to relinquishment of 68.5 sq.km area after initial assessment, 271.5 sq.km are left for CBM exploration and development. Presently, approx. 49 sq. kms area has been carved out for initial development with a provision for further development in future. The North Karanpura block area is sparsely populated with a forest cover of over 20% of the area. Active coal mines are few in this coalfield and all are located outside the block area. The block area is approachable from Ranchi on the southern side and Hazaribagh on the northern side by all-weather metaled road, which in turn connects to nearby towns by fair-weathered metaled roads. The nearest domestic airport is located at Ranchi. Ramgarh is the nearest township with railway station.
The location map of North Karanpura CBM block
Map of North Karanpura CBM Block Showing Block Boundaries
Prabha Energy Private Limited
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Map of North Karanpura CBM Block Showing Sectors, Relinquished Area, FDP and NTPC Coal Block
PEPL, referred to as Company, on behalf of consortium partner comprises of ONGC, IOCL & PEPL proposes to start CBM development operations by drilling 68 vertical wells in North Karanpura CBM Block NK-CBM-2001/1, Jharkhand starting in the year of 2017-18. Company plans to develop surface facilities for 74 wells (6 existing wells & 68 new development wells).
2.0 REFERENCE DOCUMENTS AND ATTACHMENTS
The applicable sections of the latest editions of the codes, standards and specifications listed below shall be considered part of this Scope of Supply. In case of any conflict between the reference documents, the Vendor shall notify the Buyer in writing. In general, the order of invoked priority for specifications and reference documents shall be:
Scope of Supply
Technical Documents
Industry and Government Standards
Price Schedule - Annexure A
2.1 Technical Document: Material Take-Off for HDPE pipe shall be considered as part of this Scope of Supply.
2.2 Industry and Government Standards
The latest edition of the following listed standards, in addition to the applicable standards referenced in the Technical Documents, shall be considered part of this specification:
Prabha Energy Private Limited
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American Society of Mechanical Engineers (ASME)
ASME B31.4 Pipeline Transportation System for Liquid Hydrocarbons and Other Liquids
ASME B31.8 Gas Transportation & Distribution Piping System
ASME B31.3 Process piping
American Society for Testing and Materials (ASTM)
All ASTM Standards specified in the MTO
ASTM D 3350 Standard Specification for Polyethylene Plastic Pipe and Fittings Material
3.0 DESIGN DATA
3.1 Gas Service (Underground Only)
Service: Process Gas (Wet)
Design Standard : ASTM B31.8
MOC : HDPE PE 100 / PE 4710
Design Temperature : 0 – 45oC
Maximum Allowable Operating Pressure (MAOP) : 5.00 Barg
Design Factor :0.32
Size Range : NPS 2” - 12”
3.2 Water Service (Underground Only)
Service: Process Water
Design Standard : ASTM B31.4
MOC : HDPE PE 100 / PE 4710
Design Temperature : 0 – 45oC
Maximum Allowable Operating Pressure (MAOP) : 9.5 Barg
Design Factor :0.63
Size Range : NPS 2” - 10”
4.0 SCOPE OF SUPPLY
4.1 OUTLINE SCOPE OF SUPPLY
4.1.1 This document defines the Scope of Supply to be performed under the Material Requisition.
4.1.2 Seller’s scope shall include, but not be limited to the following:
4.1.2.1 Sourcing and supply of the material listed in the requisition (HDPE pipe)
4.1.2.2 Vendor data required in the requisition
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4.1.2.3 Inspection and testing as per material requisition and approved Inspection and Test Plan.
4.1.2.4 Preparation, preservation and packing for shipment including material
4.1.2.5 Receiving Inspection at site
4.1.3 The material shall be supplied in accordance with the documents contained in the MR.
4.1.4 Seller shall note that compliance with the Scope of Supply & specifications stated therein shall not relive the Seller from the responsibility of supplying pipes to meet the start up, operating and performance guarantee conditions as per this Material Requisition.
4.2 DETAIL SCOPE OF SUPPLY
4.2.1 Seller’s Scope of Supply
4.2.1.1 Seller’s scope includes supply of the material identified on MR. Seller shall note that the scope of supply stated herein is to be considered as the minimum requirement. Any item necessary to meet the requirements of this Scope of Supply and statutory rules / codes though not explicitly stated herein, shall be deemed included in Seller’s Scope of Supply. Seller shall have full responsibility for supply of the material, which is complete and meets all identified codes, standards and Project requirements.
4.2.1.2 Material to consist of items identified by size, quality and description
4.2.1.3 Seller’s Scope includes supply of Special tools (if any) required for unloading the pipes at Buyer’s yard. A detailed list of such Special tools shall be submitted to Buyer along with the Bid.
4.2.1.4 Seller shall procure HDPE Resin material from reputed source in India, Middle East, Europe & USA and approved by Buyer. If Seller is sourcing the natural resin, then P – type material shall be used for carbon black master patch which is suitable for gas application. Seller to take prior approval for sourcing this material.
4.2.1.5 All HDPE pipe shall be provided in the largest spoolatable lengths, unless pipe diameter prohibits this. For diameters that are too large to be spooled, the minimum length shall be 12 M (nominal) unless specified otherwise.
4.2.2 Quality Assurance, Inspection, Testing and Certification
ITP FOR Raw Material shall specify the Resin Name, applicable ASTM standard and the material Cell Classification.
ITP for HDPE Pipe shall specify the Resin Name, applicable ASTM standard, Material Cell Classification and SDR
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Seller shall submit Inspection & Test Plan for the Raw Material (Resin) as per ASTM D2513, for the HDPE pipes in Gas Service and for HDPE pipes in Water service as per ASTM F2619
Seller shall submit the Material Test Certificates from the Resin Manufacturer for the Raw Material(Resin).The Material Test Certificates from the resin manufacturer shall include following as the minimum:
Name of Resin
Cell Classification
Pipe Material Designation Code e.g.PE 100 or PE 4710 etc
Test values of physical properties such as Density, Melt Index, Flexural modulus, Tensile Strength at Yield, Slow Crack Growth Resistance and Resistance and Hydrostatic Strength Classification etc
Color & UV Stabilizer
Thermal Temperature Test Results
Elongation % at Break
References of applicable test methods for each property
Seller shall carry out Type Testing of HDPE Pipe and Resin Material at a reputed independent laboratory such as CIPET etc.
Inspection & Test Plan for Type Testing shall include all include all ASTM D2513 &ASTM F2619testing requirements and shall be submitted for Company’s review and approval prior to approval of Testing.
Test for the Slow Crack Growth (SCG) Resistance as per the ASTM F1473 or ISO 13479 shall be carried out at a reputed independent laboratory. If, SCG has already been carried out by the Seller then Test Reports for the same shall be furnished by the Company.
Seller shall submit Type Test Reports for the HDPE Pipe and Resin Material for Company’s review and Comments.
Following are the minimum Inspection & Testing requirements for the HDPE pipes as per the ASTM D2513(Gas Service ) during the production of HDPE pipes.
For Raw Material ( Resin)
Test Type Method Frequency Acceptance Criteria
Cleanliness Visual Per Batch No foreign Particles
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Density ASTM D1238 Per Batch Table 1 of ASTM D2513
Melt Index ASTM D1238 condition 190/2.16
One sample per size Category C, Table-5 of ASTM D2513
Thermal Stability ASTM D3350 Per batch Min 220 deg C
Flexural Modulus ASTM D790 Per Resin Type 758- 1103 Mpa
Slow Growth Crack Resistance
ASTM F1473 Per Resin Type Min 500 hrs
MRS Validation for PE pipe at 20 deg C(Type Test)
ISO 9080/ISO 12162 Per Resin Type 10 Mpa
For HDPE Pipes:
Test Type Method Frequency Acceptance Criteria
Visual workmanship Yellow Strip
Visual Inspection One Sample/hr size Section 5.2 of ASTM D2513
OD, Wall Thickness, Toe-in, Ovality, Length
ASTM D2122 OD-1 sample/hr/size
WT- Table A1.2
Toe-in-3 samples/day from each size
Ovality- sample/day from each size(applicable for coiled pipe)
Lenghth-10 samples/day from each pipe
Wall Thickness
Section 5.3 of ASTM D2513 is applicable up to 16” inch
Minimum Hydrostatic Burst Pressure
ASTM D1599 Table A1.2 Section 5.4 of ASTM D2513
Chemical Resistance ASTM D543 & ASTM D638
5 Specimens with each chemical
Section 5.5 of ASTM D2513
Resistance to Rapid Crack Growth
ISO 13477 See Section 5.10 Section 5.10 of ASTM D2513
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Inside Surface Ductility Bend Back
D2513 One sample per survey
Section of ASTM D2513
5.12.1.2
% Elongation at Break Thermal Stability
D638
D3350
SIZE 5.12.2.1
5.12.3
Elevated Temperature Sustained Pressure Test
ASTM D1598, any one condition from Table A1.1
Six random specimens from Pipe of Size 4”
A1.2.1.2 of ASTM D2513
Squeeze off Test ASTM F1563& D1598
Section 5.13 a) Section 5.13 of ASTM D2513 is applicable upto 16” size
Outdoor Storage stability(Carbon Black Content)
ASTM D1603/D4218 Per Batch Code C, Section 4.6 of ASTM D2513
Markings 3.0 Size, e.g. 4”
4.0 Sizing System e.g. IPS
5.0 SDR Number
6.0 Manufacturers’ Name
7.0Service Gas /Water whichever is applicable
8.0 Cell Classification or Pipe Classification
9.0 ASTM D2513/ASTM F2619 whichever is applicable
10.0 Date of Manufacture
11.0 PEPL Stock Indicator
1 sample/hr/size As per approved ITP
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Following are minimum Inspection & Testing Requirements for the HDPE pipes as per ASTM F2619 (Water Service) during the production of HDPE Pipes.
For Raw Material (Resin)
Test Type Method Frequency Acceptance Criteria
Cleanliness Visual Per Batch No foreign Particle
Density ASTM D1238 Per Batch ASTM F2619
Melt Flow Rate ASTM D792/D1505 Per Batch ASTM 2619
Thermal Stability ASTM D3350 Per batch Min 220 deg C
Flexural Modulus ASTM D790 Per Resin Type 759- 1103 Mpa
Slow Growth Crack Resistance
ASTM F1473 Per Resin Type Min 500 hrs
MRS Validation for PE pipe at 20 deg C(Type Test)
ISO 9080/ISO 12162
Per Resin Type 10 Mpa
Test Type Method Frequency Acceptance Criteria
Visual Workmanship
Purple Strip
Visual Inspection One sample/hr/size Section 5.1 of ASTM F2619
OD, Wall Thickness, Toe-in,Ovality, Length
ASTM D2122 OD-1sample /hr /size WT-Table A1.2
Toe-in- 3 samples /day from each size
Ovality- 1 sample /day from each size( applicable for coiled pipe)
Length-10 samples /day from each size
Section 5.2 of ASTM F2619
Outside surface Irregularity
ASTM F2619 1 sample/day from each size
Table 2 of ASTM F2619
Short Term Pressurization
ASTM D1599 OR D2290
1 sample per size Section 5.5.1 or 5.5.2 of ASTM F2619
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For HDPE Pipes
If the test results are not in compliance with the relevant ASTM standards; Note A1.2 of ASTM D2513 shall be referred for pipes in Gas Service and Section 9.1 of ASTM F2619 shall be for pipes in Water Service.
4.2.2.1 The material shall be inspected by Buyer and or Buyer’s appointed Third Party Inspection Agency (TPIA) as per MR & approved ITP.
4.2.2.2 TPIA is in Buyer’s Scope and will be appointed by the Buyer’s.
4.2.2.3 Seller shall submit inspection and test plan (ITP) for Buyer’s review and approval.
4.2.2.4 Material certification shall be to EN 10204 Type 3.1 as a minimum.
4.2.2.5 The Seller shall issue inspection to the Buyer for all test mentioned in the approved ITP. The Buyers and /or Buyers representatives reserves the right of Inspection and testing at the Seller’s Sub – Seller’s works.
4.2.2.6 The Buyer shall issue a Release for Shipment for each shipment after review of the Seller’s Quality Verification Documentation.
4.2.3 Preparation for Shipment and Preservation
4.2.3.1 Seller shall supply a comprehensive packing list, for each shipment, clearly identifying the bulks supplied, with detail description and quality.
4.2.3.2 Seller shall carry out a detail inspection of all the shipments prior to delivery,with respect to packing list in order to ensure the completeness of the material.Buyer reserves the right to dispatch its authorized representative to witness the inspection.
4.2.3.3 Supplier of HDPE Pipes shall make necessary arrangements for optimum utilization of space time & cost and apply techniques /methods such as Nesting during transporting of HDPE Pipes.
Inside Surface Ductility Bend Back Test % Elongation at Break
DF629 1 sample per size Sections of ASTM F2619
5.3.2
5.3.1
Elevated Temperature Sustained Pressure Test
ASTM D1598 any one condition from Table 5
Three random specimen from Pipe of Size 4”
Section 5.4.1 of ASTM F2619
Carbon Black Content ASTM D4218/D1603
1 Sample per day Section 5.6 of ASTM F2619
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4.2.4 Receiving Inspection at Site
Within thirty days of receipt of material at site, an Inspection of the material shall be carried out by the representatives of Buyer. The objective of the inspection is to check and verify completeness of supply including damages. A report shall be prepared identifying the list of short receipt / missing / damaged supply (if any). Buyer shall give Seller two weeks to discuss the report.
Seller shall ensure prompt and time bound replenishment of all short receipt damaged items within Buyer’s project schedule.
4.3 TECHNICAL REQUIREMENTS
4.3.1 General requirements
4.3.1.1 All bulk piping materials shall be supplied in strict accordance with the applicable technical requirements in this scope of supply and with the applicable referenced standards.
Vendor shall quote on piping materials in the MTO that he can supply to meet the exact requirements of this scope of supply. Alternate quotes, unless requested to the specifications described in the MTO will not be accepted.
The following documents are part of this Scope of Supply:
Seller Documents Requirement Schedule (SDRS). Inspection Test Plan (Furnished by Seller, approved by Buyer)
The SDRS specifies the required documentation that the vendor shall provide and states the required time frame and number of copies to be supplied. The Inspection test Plan specifies the inspection and test activities to be performed and level of control during the manufacture of materials.
Materials shall be recently manufactured, new and un unused without any repairs of first quality (not second grade) conforming to relevant specification or other applicable specifications.
Tests for the Raw Material (Resin) and Pipes shall be carried out during the production as [per ASTMD2513 (Gas Service) and ASTM F2619 (Water service) for each resin batch or as mutually agreed between Company and Seller. The samples required to fulfil these tests shall be taken at random throughout the resin batch.
4.3.2 Specific requirements
Unless specified differently in the requisition, the following material standards shall be applicable for each listed component type.
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High density Polyethylene Pipe for Gas Service
Grade: PE 100 / PE 4710 Cell classification: PE 445576C as defined in ASTM D3350 Dimensional per ASTM D2513. However the outside diameter & minimum
wall thickness shall meet the requirements specified in the MTO. The Hydraulic design Basis of HDPE materials for gas service shall have
been validated per section 5.9 of ASTM D2513 within five years of the date of manufacture. The production of the materials shall not have substantial changed between the time of validation and the time of manufacture. Any substantial change in the production of the material shall warrant re-validation of the process.
High density Polyethylene Pipe for Water Service
Grade: PE 100 / PE 4710 Cell classification: PE 445576C as defined in ASTM D3350 Dimensional per ASTM D2513. However the outside diameter & minimum
wall thickness shall meet the requirements specified in the MTO.
For Material not specially listed, the material standards called out in the item description shall supply.
a) HDPE Pipe Supply Length, (New Supply) per below:
Seller shall supply HDPE Pipes in length as per the details provided below:
Size 4” - supply shall be in coils
Size 4” - Coil Size should be either 100 meters or more
Above 4” Size- 12 meter (nominal) minimum length
b) Short Length of Pipes, (New Supply) per below:
In case of power failure, there is a possibility of defects on the pipe surface which are not acceptable. Such defective length of pipes shall be cut and pipes with reduced length between 6m to 11m shall be supplied. Short length of supply quantity shall not exceed more than 2% of the total PO quantity of each size.
4.3.3 Marking
All piping materials shall have permanent identification markings in accordance with the applicable ASTM specification, and as specified herein as a minimum.
The minimum information to be marked on all pipes shall be follows:
Size, e.g. 20”
Sizing System e.g. IPS
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SDR Number
Manufacturers’ Name
Service: Gas/Water, whichever is applicable
Cell classification or Pipe Material Designation Code
ASTM D2513/ASTM F2619 whichever is applicable
Date of Manufacture
All pipes shall be provided with outside surface color strips as specified in the MTO. These color strips shall be inseparably co-extruded as part of the pipe outside surface.
Cut pipe ends shall be squarely cut and clean without ledges, shaving tails, burns or cracks.
All pipes shall have outdoor storage stability of at least 5 years and there shall not be any deterioration in pipes due to prolonged exposure to Solar Radiation and Weathering.
HDPE Pipes may remain in contact with certain chemicals in hydro-test water like Biocides/Oxygen Scavengers etc. Seller shall confirm that due to addition of such chemicals, HDPE Pipe shall not have any impact /deterioration in its mechanical or physical properties.
Seller shall submit Qualified Joining Procedures for Butt & Electro-fusion Welding. These joining procedures shall include parameters such as Material Grade, Pipe Size, Wall Thickness, Welding Temperature, Holding Pressure etc.
4.4 FINAL DOCUMENTATION
Seller shall submit comprehensive Manufacturer Data Records (MDR) for all material in accordance with the SDRS. MDR shall include all test reports. Prior to submission, MDR index shall be submitted for review and approval by Buyer. These Data books shall include, but shall not be limited, to the following:
All engineering deliverable marked as “Certified Final” or “As Built” whichever is applicable.
Inspection and Test procedures.
All Inspection reports and test certificates.
Material test reports
Catalogue of all components.
Installation / Erection instruction manual.
Inspection and Test Plan (ITP).
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TPIA Release note.
Buyer’s Release for shipment.
Seller shall provide two sets of soft copies on DVD’s and four sets of hard copies of all above documents including software, Manufacturer Data Records and Manuals.
5.0 BID DOCUMENTATION
Seller shall submit the following details as a minimum along with the bid:
1. List of Special tools, as may be required. 2. Seller’s organization chart for the project. 3. ASTM/ ISO Certificate. 4. ITP for similar project executed earlier by Seller. 5. Quality & HSE documents. 6. Detailed Schedule indicating key milestones, with realistic activity duration &
logical sequence and proper interfaces and highlighting the critical path. Schedule to include commissioning and performance test.
7. Reports of Previous Projects with similar magnitude & complexity to establish Seller’s capability / expertise:
8. Descriptive brochures and catalogue / manuals, as appropriate. 9. Guaranteed Performance Parameters. 10. Documentation giving guidelines/procedures on safe storage & handling of
HDPE Pipes. The Procedures shall provide minimum information on stacking height, precautions for storing & handling pipes in open yards as the pipes will be stored in the yard for longer duration before put to use.
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B SCOPE OF SUPPLY FOR HDPE FITTINGS
This Specification defines the minimum technical requirements for manufacturing, inspection, testing and supply of HDPE fittings for North Karanpura (Ranchi) CBM field development project.
1. 0 Type of Fittings:
The following types of fittings are covered by this specification:
Equal and Reducing Tees
Standard Elbows (1.5D)
3D Bends for Piggable lines (with varying angles as stated in MTO)
Concentric Reducers
HDPE -stainless Steel Transition Fittings
Stub Ends
End Caps
Electro Fusion Couplers
2. 0 Codes, Standards and Specifications
The applicable sections of the latest editions of the codes, standards and specifications listed below (including revisions, addenda, and other documents incorporated by reference) shall be considered part of this specification:
The Seller shall obtain his own copies of the Industry and Government Standards referenced herein:
The latest edition of the following listed standards shall be considered part of this Specification:
ASME B31.4 Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids
ASME B31.8 Gas Transmission and Distribution Piping Systems
ASME B31.3 Process Piping
ASTM D3350 Standard Specification for Polyethylene Plastics Pipe and Fittings material
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ASTM D2513 Standard Specification for Polyethylene(PE) Gas Pressure, Gas Pressure Pipe, Tubing and Fittings
ASTM F2619 Standard Specification for High- Density Polyethylene (PE),Line Pipe
ASTM D3261 Butt Heat Fusion PE Plastic Fittings for Polyethylene (PE) plastic pipe and tubing
ASTM D2122 Standard Test method for Determining Dimension of Thermoplastic Pipe and Fittings
ASTM D1598 Standard Test method for Time to Failure of Plastic Pipe under Constant Internal Pressure
ASTM D1599 Standard Test method for Resistance to Short Time Hydraulic Pressure of Plastic Pipe , Tubing and Fittings
ASTM F2206 Fabricated Fittings of Butt- Fused PE Plastic Pipe, Fittings
All other ASTM and ISO Standards referred in the above standards and specified in the MTO. In addition, the supply shall comply with Local Government Rules and Regulation, relevant to Health, Safety and Environment.
3. Design Data
3.1 Gas Service(underground only)
Service: Process Gas (wet)
Design Standard : ASME B31.8
MOC: HDPE PE4710
Design Temperature: 0- 45 deg C
Design Pressure: 4.93 Bar g
Size Range: IPS 2”- 10”
3.2 Water Service (underground only)
Service: Produced Water
Design standard: ASME B31.4
MOC: HDPE PE4710
Design Temperature: 0- 50 deg C
Design Pressure: 9.20 bar G
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Size Range: 2” - 10”
4.0 TECHNICAL REQUIREMENTS:
4.1 GENERAL REQUIREMENTS
4.1.1 All materials shall be supplied strictly in accordance with the applicable technical requirements in these specifications and with the other applicable referenced standards.
4.1.2 Material shall be new (not older than 2 years), unused, without any repairs, of first quality, conforming to relevant applicable specifications.
4.1.3 Inside Diameter of the fittings at weld ends shall match with SDR 17 pipes of same IPS size
4.1.4 All fittings shall have the pressure rating equivalent to the SDR 17 pipes of same grade.
4.1.5 The Seller shall source HDPE Resin material from reputed manufacturer in India, Middle East, Europe and USA. Resin shall be procured from reputed manufacturers such as Borough Pte LTD, Lyondell Basell, Ineous
In case, resin material is sourced from any other manufacturer then the following information and Resin Test results shall be furnished as per Cell Classification CC4455 76C of ASTM D3350 for the Buyer review and approval
1) MRS/HDB validation 6) Slow Crack Growth Resistance
2) Density 7) Thermal Stability
3) Melt Index 8) Elongation at Break
4) Flexural Modulus 9) Brittleness Temperature
5) Tensile Strength at yield 10) Carbon Black
The Seller shall procure Resin Material only after the Buyer Approval.
5.1 SPECIFIC REQUIREMENTS OF FITTINGS FOR GAS SERVICE
Unless specified differently in the requisition, the following requirements are applicable for each listed component type in Gas Service.
Grade: PE 4710
Cell classification PE 445576C, as defined in ASTM D3350
Dimensional as per ASTM D2513
End Condition: Butt Fusion end
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Validation of Resin material for “Minimum Required Strength” (MRS) as per ISO 9080/ISO 12162 or “Hydrostatic Design Basis “(HDB) as per ASTM D2837 shall be validated as per section 5.9 of ASTM D2513. Any substantial change in the manufacturing of the resin material shall warrant re validation of the process.
The Seller shall provide sectional drawings of all fittings for the Buyer review and approval prior to start of manufacture/supply of fittings.
5.2 SPECIFIC REQUIREMENTS FOR FITTINGS IN WATER SERVICE
Unless specified differently in the requisition, the following requirements are applicable for each listed components type in Water Service.
Grade PE 4710
Cell Classification PE 445576C, as defined in ASTM D3350
Dimensional as per ASTM D3261
End Condition : Butt Fusion End
The Seller shall provide sectional drawings of all fittings for the Buyer review and approval prior to start of manufacture/supply of fittings
6.0. TECHNICAL AND QUALITY REQUIREMENTS
6.1 Raw Material- Resin (Applicable for all type of Resins)
Sr. No Test Description Reference Standard
Acceptance Norms
Frequency Forms of Records
1 Density@ 23 deg C
ASTM D792 Table 1 of ASTM D3350
Each Batch Material test certificates /Lab Report
2 Melt Flow Rate (190 deg C, 21.6 kg)
ASTM 1238 4-20 gm/10 min Each Batch Material test certificates /Lab Report
3 Thermal Stability ASTM D3350 Min. 220 deg C Each Batch Material test certificates /Lab Report
4 Flexural Modulus ASTM D790 758-1103 Mpa Per Resin Type
Material test certificates /Lab Report
5 Tensile Strength at Yield(50 mm/min)
ASTM D638 24-28 Mpa Per Resin Type
Material test certificates /Lab Report
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6 Elongation at Break (50mm/min)
ASTM D638 >400% Per Resin Type
Material test certificates /Lab Report
7 Slow Growth Crack Resistance
(Type Test)
ASTM F1473 (PENT)
Min 500 hrs Per Resin Type
Material test certificates /Lab Report
8 MRS Validation for PE pipe at 20 deg
C (Type Test)
ISO 9080/ISO 12162
10 MPa Per Resin Type
Material test certificates /Lab Report
9 Resistance to Rapid Crack
Prpagation ( Type Test)
ISO 13477 58 psi (> 4bar @ 0 deg C)
Per Resin Type
Material test certificates /Lab Report
10 Brittleness Temperature (Type Test)
ASTM D746 <-60 deg C Per Resin Type
Material test certificates /Lab Report
Note:
1. For Sr. No 1-3, Seller shall perform the tests, for each of the resin batch from which the fittings will be manufactured against this specific supply.
2. For Sr No. - 4-10 Seller shall provide actual tests reports performed by resin manufacturer for any batch of the same grade.
6.2 HDPE MOULDED FITTINGS
Sr. No Test Description
Reference Standard
Acceptance Norms Frequency Forms of Records
1 Workmanship
ASTM D2513
Fittings shall be homogeneous throughout and free from visible cracks, holes,foreign infusion,blister dents and other injurious effects
1 sample/hr/size
Inspection Report
2 Outside Diameter
ASTM D2513 & ASTM 2122
Table 2 of D2513 1 sample/hr/size (Table A1.2) of D2513
Inspection Report
Wall Thickness
ASTM F2513 & ASTM2122
Table 4 of D2513 1 sample/hr/size (Table A1.2) of D2513
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3 Toe On ASTM D2513 and ASTM D2122
<= 1.5% 3 Samples/day/size Inspection Report
Ovality (Out of Roundness)
ASTM D2513 and ASTM D2122
<= 2% 1 sample/day/size
Length ASTM D2513 & ASTM D2122
As agreed between manufacturer and customer
10 samples/day/size
4 Hydrostatic Burst Report
ASTM D2513
Method B of ASTM D1599. Internal pressure shall be 580 psig
3 fittings
Test
Report
5 Chemical
Resistance
Test
ASTM
D2513
ASTM D638
Change in weight
should not be more
than0 .5% or 1%
depending on the
chemical and tensile
strength not more
than +/- 12%
5 samples dumbbell
punched from
plaque for a
chemical
independently (once
annually thereafter)
Test Report
6 Melt Flow
Rate Material
ASTM
D1238
4-20 g/10 min 1 sample per size Test Report
7 A) %
Elongation at
break
ASTM D638 >400% 1 sample per size Test
Report
B) Thermal
Stability
ASTM
D3350
Min. Induction
temp>220 deg C
1 sample per size Test
Report
8 Elevated
Temperature
sustained
pressure test
ASTM
D2513
Annexure
A1 and
Table A1.1
& ASTM
No sample failure
allowed
3 fittings Test
Report
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D1598
9 Carbon
Black
Content Test
ASTM D4218
ASTM
D2513 4.6
2 to 3% 1 Sample/Size Test
Report
10 Marking As per
buyer
approved
buying
procedure
Should be legible,
visible and
permanent
Each fitting Test
Report
6.3 HDPE Pipe (Applicable for Fabricated and Transition Fitting)
Sr. No Test
Description
Reference
Standard
Acceptance Norms Frequency Forms of
Records
1 Workmanshi
p
ASTM
D2513
Fittings shall be
homogeneous
throughout and free
from visible cracks,
holes,
foreign infusion,
blister dents and
other injurious
effects
1 sample/hr/size
Inspection
Report
2 Outside
Diameter
ASTM
D2513 &
ASTM 2122
Table 2 of D2513 1
sample/hr/size(Tabl
e A1.2) of D2513
Inspection
Report
Wall
Thickness
ASTM
F2513 &
ASTM2122
Table 4 of D2513 1
sample/hr/size(Tabl
e A1.2) of D2513
3 Toe On ASTM
D2513 and
ASTM
<= 1.5% 3 Samples/day/size
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D2122
Inspection
Report
Ovality(Out
of
Roundness)
ASTM
D2513 and
ASTM
D2122
<= 2% 1 sample/day/size
Length ASTM
D2513
& ASTM
D2122
As agreed between
manufacturer and
customer
10
samples/day/size
4 Hydrostatic
Burst Report
ASTM
D2513
Method B of ASTM
D1599. Internal
pressure shall be
580 psig
3 fittings
Test
Report
5 Chemical
Resistance
Test
ASTM
D2513
ASTM D638
Change in weight
should not be more
than0.5% or 1%
depending on the
chemical and tensile
strength not more
than +/- 12%
5 samples dumbbell
punched from
plaque for a
chemical
independently
(once annually
thereafter)
Test
Report
6 Melt Flow
Rate Material
ASTM
D1238
4-20 g/10 min 1 sample per size Test
Report
7 C) %
Elongation at
break
ASTM D638 >400% 1 sample per size Test
Report
D) Thermal
Stability
ASTM
D3350
Min. Induction
temp>220 deg C
1 sample per size Test
Report
8 Elevated
Temperature
sustained
pressure test
ASTM
D2513
Annexure
A1 and
Table A1.1
No sample failure
allowed
3 fittings Test
Report
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& ASTM
D1598
9 Carbon
Black
Content Test
ASTM D4218
ASTM
D2513 4.6
2 to 3% 1 Sample/Size Test
Report
6.4 Fabricated Fittings
6.4.1 All jointing for fabricated fittings shall be carried out by Butt Fusion process.
6.4.2 Inside Diameter (ID) of the fittings shall match with SDR 17 pipes of same size.
6.4.3 All fittings shall have pressure rating equivalent to the SDR 17 pipes of same grade
6.4.5 if higher thickness pipes are anticipated to meet the above requirement, it shall be
ensured that the Inside diameter at Butt Fusion ends shall match that of SDR 17 pipes
of specified IPS size.
6.4.6 As these fittings are meant for pig-gable pipeline application, the inside diameter of all
the fabricated fittings shall be explicitly stated in the bid.
6.4.7 The ends of the fittings shall be suitable for making butt fusion joints at site.
6.4.8 Bidder shall submit fusion procedure specification (FPS) and fusion procedures
qualification record (FPQR) for shop welding along bid in accordance with attachment
A of this specification.
6.4.9 Inspection and testing requirements for fabricated fittings.
Sr.
No
Test
Description
Reference
Standard
Acceptance Norms Frequency Forms of
Records
1 Incoming Pipe
Inspection
Manufacturer
Internal
Standard
Pipe shall be
homogeneous
throughout and free
from visible cracks,
holes,
foreign infusion,
blister dents and
100% on
Receipt of
Pipe
Inspection
Report
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other injurious effects
FPS,FPQR
and Welder
qualification
records
Attachments
a of PLS
1012
Attachments a of
PLS 1012
Qualification
Record
2 Visual
Inspection
ASTM D2513 Section 5.2 of ASTM
D2513
Each Fitting Inspection
Report
3 Short term
Pressurization
test
ASTM F 714,
ASTM F2206
CL 7.3 and
9.5
All the specimens
shall pass the test
1 fitting Test
Report
4 Elevated
Temperature
sustained
pressure test
ASTM D2513
Annexure A1
and Table
A1.1 and
ASTM D1598
No sample failure
allowed
1 fitting
Test
Report
5 Overall
Dimension(O
D, Tolerance,
Ovality,
Thickness)
Approved
GAD
As per
Approved GAD
Each Fitting Inspection
Report
6 Marking As per Client
approved
marking
procedure
Should be legible,
visible and
permanent
Each fitting Test
Report
6.5 Transition Fittings
6.5.1 The transition shall meet the requirements of category 1 mechanical joint as per Cl
6.10 ASTM D2513
6.5.2 Pigging will occur in the HDPE lines using the soft foam bullet pigs in gas service,
Transition fittings shall provide smooth interior transition between the steel pipeline
and the PE pipeline
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6.5.3 ID of the transition fitting shall match with connected pipes at both ends. Reference
shall be made to PLD- 0011/PLD -8012 for dimension details
6.5.4 The interior of the fitting should not contain sharp edges in which pig can get stuck
6.5.5 Bevel end preparation at steel end shall be as per ASME B31.8. HDPE ends shall
be suitable for Butt Fusion joints
6.5.6 The seller shall provide sectional drawings of proposed transition fitting design for
the Buyer’s review and approval
6.5.7 The joint between the HDPE portion and the steel portion shall be detailed in the
Seller drawings and submitted for the Buyer’s review and approval
6.5.8 Steel end of each transition transition fitting shall be provided with a pup piece of
minimum 300 mm long
6.5.9 The SS/CS long pipes used in the transition fitting shall be as per the following
specifications:
ASTM A312- TP for sizes up to 8”(seamless) - For SS Transition fittings
ASTM A106 Grade B for sizes up to 10 Inches for CS Transition fittings
6.5.10 Inspection and Testing requirements for Transition fittings
Sr.
No
Test
Description
Reference
Standard
Acceptance Norms Frequency Forms of
Records
1 Incoming Pipe
Inspection
HDPE AND
CS/SS PIPE
Manufacturer
Internal
Standard
Pipe shall be
homogeneous
throughout and free
from visible cracks,
holes foreign infusion,
blister dents and other
injurious effects
100% on
Receipt of
Pipe
Inspection
Report
Dimension ASTM
D2513
Section 5.2 of ASTM
D2513
Each Fitting Inspection
Report
2 Short term
Pressurization
test
ASTM F 714,
ASTM F2206
CL 7.3 and
9.5
All the specimens
shall pass the test
1 Fitting Test
Report
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3 Elevated
Temperature
sustained
pressure test
ASTM
D2513
Annexure A1
and Table
A1.1 and
ASTM
D1598
No sample failure
allowed
1 Fitting Test
Report
4 Joint test
category (Pull
test)
6.10 of
ASTM
D2513 &
ASTM D638
All specimens shall
pass the test
Each size Test
Report
5 Overall
Dimension(OD,
Tolerance,
Ovality,
Thickness)
Approved
GAD
As per
Approved GAD
Each Fitting Inspection
Report
6 Marking As per Client
approved
marking
procedure
Should be legible,
visible and permanent
Each fitting Test
Report
Note: Size & type pf the fittings for all the destructive tests (IN SEC 6.0) shall cover all
size ranges and mutually agreed by the Buyer and the Seller.
7.0 Marking
7.1 All fittings shall have durable and legible identification markings in accordance with the
applicable ASTM specification, and as specified herein as a minimum.
7.2 Marking shall be in English language and in SI units
The minimum information to be shown on fittings shall be as follows:
Size, e.g. IPS 4”
SDR Number
Manufacturer
Service : Gas/ Water, whichever is applicable
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Cell classification or Material Designation Code
ASTM D2513/STM D3261, whichever is applicable
Color Coding
7.3 All fittings shall be marked on the body or hub. For transition fittings, markings shall be
made at both HDPE and SS sides.
7.4 Marking procedure shall be submitted for the Buyer review and approval as part of post
order documentation.
ATTACHMENT A- QULAIFICATION AND TESTING OF BUTT FUSION JOINTS
1.0 Procedure Qualification
To verify the quality of the fusion process and machine function, the Seller shall carryout
qualification test in accordance with ASME Sec. IX, clause no. QF- 200 using preliminary
Fusion Procedure Specification (FPS) as specified in QF- 480 of ASME Sec. IX.
Qualification/Testing shall be carried out in the presence of a TPIA.
The proposed pipe wall thickness ranges for procedure qualification in accordance with
QF202.2 shall be as follows.
SL.
No.
Procedure Qualification Test (Wall
Thickness)
Procedure Qualification
Range
01 10 mm 5mm to 20 mm (2” to 8”
OD)
Note: Pipe having wall thickness of 10 mm is required to qualify our project pipe wall
thickness range from 5 mm to 20 mm
1.1 Visual Inspection
Visual Inspection shall be carried out upon completion of the butt fusion. Allow the fusion
joint samples to cool to ambient temperature. The V groove between the beads should
not be deeper than half the bead height above the pipe.
The following guidelines for acceptable and unacceptable visual appearance for butt
fusion samples shall be considered applicable.
Acceptable visual appearance: Proper double roll -back bead with proper alignment.
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Unacceptable visual appearance: Incomplete face- off
Unacceptable visual appearance: Improper pipe alignment with high - low
Unacceptable visual appearance: Improper alignment in fusion machine- miltered joint
Unacceptable visual appearance: Contamination of joint
1.2 Reverse Bend testing of fused joints
To ensure the quality of fusion joint, the bend back testing of fused joints shall be carried
out as detailed below:
Cut the joints into straps as given in Fig: QF- 463 of ASME Sec. IX. Bend test shall be in
accordance with QF- 143 of ASME Sec. IX
Minimum four straps shall be cut at locations 12,3,6 and 9’o clock positions for two joints.
The cut sample shall be visually inspected for bond continuity and strength. The cut
sample shall not have any indication of voids, gaps, misalignment of surfaces, In case
any of the defects present the new test sample shall be prepared and tested again.
Bend each sample at the fusion joint with the inside of the pipe facing out until the ends
touch. Upon bending, sample shall be free of cracks and separations within the fusion
joint locations. If failure occurs at the weld in any of the samples then the fusion
procedure shall be reviewed and corrected and retest shall be carried out.
1.3 In case of any test sample fails to meet the applicable acceptance criteria the retest shall
be carried out as below. The causes for the test failure shall be analyzed and accordingly
the relevant parameters shall be changed.
After correction, another two sample fusion joints should be made per the new procedure
and retested.
Upon successful completion of testing, the Seller shall make the proper records with the
parameter monitored/applied during procedure qualification. The seller shall propose the
suitable format to accommodate all the necessary information and the essential variables
as applicable for the consultant /company review and approval. For each qualification,
the records shall be maintained and made available for verification.
All procedure qualification shall be certified by a TPIA.
1.4 Submission of Fusion Procedure Specification (FPS) and QPR
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Upon successful completion of all testing, the Seller shall submit the Fusion Procedure
Specification along with supported Fusion PQR for review and approval of the Company
/Consultant. The formats shall be in accordance with QF-480 of ASME Sec. IX.
2.0 Qualification of Butt Operators
Each butt operator shall be qualified in accordance with clause no. QF - 300 of ASME
Sec. IX, Code.
The pipe diameter range for performance qualification shall be as per Table QF- 452.3 of
ASME Sec. IX. Fusion joining machine operator shall be re-qualified when there is
change in butt fusion joining machine/equipment manufacturer. Upon successful
qualification of butt fusion procedure, the same parameters shall be applied and
subsequently all operators to be qualified.
Visual and reverse bend test shall be carried on test samples for operator qualification in
accordance with Clause no. QF- 321 of ASME Sec IX Code.
A fusion machine operator who fails one or more tests prescribed in QF -302 of ASME
Sec. IX, as applicable shall be retested in accordance with Clause no. QF- 321 of ASME
Sec IX Code.
The Seller shall maintain the unique number for each operator and operator qualification
record shall be maintained for verification.
The records of fusion machine operator performance qualification tests shall include the
qualified ranges of essential performance variables. , the type of tests performed, and
the test results for each of fusion machine operator. Suggested forms for these records
in Form QF- 484 of ASME Sec IX Code.
The Seller shall ensure that each operator shall have adequate training and proper
guidance as required prior to production joints.
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C SCOPE OF SUPPLY FOR HDPE PLB DUCTS
The Material Requisition and attachments form an integral part of this RFQ and will form
the technical basis for any resultant Purchase Order.
I SCOPE OF WORK
The WORK defined and described hereunder is not exhaustive. Seller’s scope includes
but not limited to the following.
1.0 Supply of new Goods should be as detailed in “Technical Specifications” &
Form A “Price Break Down Structure”.
2.0 Seller shall be responsible for complete design, manufacturing and supply of
Goods detailed in “Technical Specifications” and Form A – “Price Break Down
Structure”.
II SCOPE OF SUPPLY & TECHNICAL SPECIFICATIONS:
1.0 General: This section defines minimum requirements for manufacturing/ supply of
GOODS. All materials supplied under this specification shall be manufactured in
compliance to the latest edition of ASTM/IS/TEC standard specifications and other
requirements of BUYER as specified hereunder:
2.0 Scope of Supply
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Bidder’s scope includes manufacturing and supply of the following:
HDPE Permanently Lubricated Duct (PLB) DUCT for Optical Fibre Cable Insertion as
specified in Form A – “Price Break Down Structure” and Annexure B - Technical
Specifications
2.1 Inspection
Prior to supply Seller shall get the Goods to be supplied under this Purchase Order
inspected by PEPL representative or PEPL authorized agency at Seller’s premise.
Seller shall submit to Buyer inspection report issued by PEPL representative or PEPL
authorized agency prior to supply. Seller shall notify Buyer at least 4 days prior to the
proposed inspection date, to facilitate PEPL to depute its representative.
The above inspection shall not relieve the Seller of his responsibility to supply Goods
as per ASTM/IS/TEC specifications. Seller shall replace at its cost all Goods, which
Buyer finds defective or not in conformance with the ASTM/IS/TEC Standards.
2.2 Testing
All Goods supplied against the order shall be tested as per ASTM/IS/TEC
specifications. Seller shall furnish a certificate of compliance that the Goods have
been manufactured, sampled, tested and inspected in accordance with the
ASTM/IS/TEC specification.
2.3 Marking
On each of the Goods shall be permanently marked by the manufacturer with the
following information, wherever applicable:
Manufacturer’s Name: Project Name: CBM Gas Project Name of the Duct with Diameter size: Date of Manufacture: Sequential Length marking at every meter:
2.4 Reports
Seller shall furnish to Buyer at the time of dispatch but not limited to the following
reports for the Goods
a) Certificate of compliance from Seller certifying that the Goods are manufactured
in full conformance with applicable Standards
b) Relevant test certificates for the tests carried out as per applicable standards.
c) TPIA Release Note if Available
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2.5 Packing
Bundling and shipping of Goods shall be as per standard industry practice.
Goods shall be delivered at Buyer’s designated base at PEPL warehouses,
North Karanpura,Ranchi.
Packing of Goods shall withstand rough handling during transportation, loading
and unloading.
2.6 List of Document to be submitted with bid
Bidder should submit documents including but not limited to followings along with bid:
2.6.1 List of companies to whom Seller has supplied Goods.
2.6.2 Letter of satisfaction from the companies to whom Seller has supplied the
Goods.
2.6.3 Performance report for Goods offered.
2.6.4 Documents describing supply /manufacturing experience of bidder.
2.6.5 Information brochure Giving technical information of Goods.
2.6.6 A copy of Quality Assurance/ Quality Control/ Procedures manual.
Technical Requirements:
Sl. No.
Parameters Specified Limit Test Method
A Appearance
1 Visual Appearance
Smooth Inside & Outside surface, free of blisters, shrink, hole flaking scratches & roughness. Duct shall be smooth, clean and round. The end shall be clearly cut and shall be square with axis of duct.
2 Colour The Colour of the duct shall be bright orange/bright green/ bright yellow and uniform throughout.
The colour of the inner layer shall be white.
IS: 9938
3 Fading of colour There shall be no de colouration after ASTM D 1712
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colour fading test
4 Lubricated Layer Must have inner lubricant layer clearly visible & white in colour. Uniform in thickness
5 Identification marking
Permanently marked with indelible ink
Manufacturers Name: Project Name: CBM Gas Project Name of the Duct with size: Date of Manufacture: Sequential Length marking at
every meter:
6 UV Stabilizer Test on Finished Product
Variation in Tensile Strength after ageing shall not be more than 20%
B Dimensions & Weight
1 Outside Diameter
40 mm + 0.4 mm
- 0.0 mm
It should be measured with the help of a Vernier caliper with a least count of 0.1 mm
2 Wall Thickness 3.5 mm +/- 0.20 mm It should be measured with the help of a Vernier caliper with a least count of 0.1 mm
3 Lubricated Layer Thickness
Should be min 10% of the wall thickness
It should be measured with the help of a travelling microscope with a least count of 0.1 mm
4 Standard Length 1000 meter +0.5%- 0.2%
5 Weight 380 gm/meter +/- 10 gm
6 Ovality Tests Difference of maximum and minimum diameter should be less than 1.3 mm
IS 4984
C Chemical Tests
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1 Melt Flow Index
(@5kgs/190o C)
The change in the MFR caused by processing of raw material into the duct i.e. the difference between the measured value for the outer layer material from the duct and measured value for the raw material shall not be more than 30%. (The test shall be conducted by collecting raw material from the hopper during the extrusion and finished duct made from the same material)
IS 2530
2 Ash Content 0.3% max About one gram of the sample under test shall be taken and dried at 1050C for two hours in a platinum or glazed porcelain or silica or quartz crucible. The weight of the sample shall be noted. Subsequently, the sample with the crucible shall be transferred to a muffle furnace maintained at 600 + 500C and allowed to remain there for three hours. The ash content may be calculated as a percentage of the weight of the original shape
3 Environmental Stress
cracking resistance (ESCR)
No Cracking ESCR test shall be carried out as per ASTM D 1693 when tested with 10% Igepal (CO 630) solution at 50 + 10C. For type approval testing the duration of the test shall be 1000 hours. For acceptance testing the duration of the test shall be 48 hours.
4 Oxidation Induction
test
30 minutes (minimum) A short length of completed duct (approximately 30 cm) shall be sealed at the ends and placed in an oven at temperature of 68 + 10C for 8 hours. The sample shall then be allowed to cool at room temperature for at least 16
hours. The sample shall be clean and dry. The sample shall then be tested by
means of a Differential Scanning Calorimeter (DSC).
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(ASTM D 3895)
D Physical Tests
1 Hardness 60 shore D (min) ASTM D2240
2 Density 0.940 to 0.958 g/cc at 270 C Test method as per IS 2530
3 Tensile strength at yield speed of testing 50 mm/minute
Min 20 N/mm2 ASTM F 2160 (using type IV specimens of ASTM D638)
4 Elongation at Break Speed of testing is 50 mm/min.
Min 500% ASTM F 2160 (using type IV specimens of ASTM D638)
5 Mandrel Test Mandrel should easily pass
between one end to other
A 150 mm long mandrel of diameter, 3 mm less than the internal diameter of the duct shall be passed through a 5 meter length of the duct, freely throughout the length, when the duct is bent to a radius of 5 meter
6 Coil Test No snaking or waving having zero coil set
The PLB HDPE duct shall unroll off the drums without snaking or waving having zero coil set. Thus the duct shall lay straight into the trench without recoiling.
For this purpose, when a minimum length of 50 meters duct taken from the coil and laid on the ground, it shall be straight without any bends or Kinks and without deformation, except 5 meters from each end
7 Hydraulic Characteristics
Minimum holding time to be
observed as indicated in Test
The duct shall be tested for internal pressure creep rupture test as per IS 4984. For this purpose, a sample length of 10
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method times the outside diameter of the duct shall be taken. At the end of the test, the sample shall not show signs of localized swelling or leakage and shall not burst during the test duration.
The test showing failure within a distance equivalent to the length of end cap from the end shall be disregarded and the test repeated
8 Crush Resistance Test
Deflection not greater than 10% with load 50 kg and after recovery less than 2%.
Sample of duct of 150 mm + 2 mm in length shall be subjected to a dead load of not less than 50 Kg for one minute and shall be allowed to recover for 5 minutes. The deflection with load on and after recovery period shall not exceed 10% and 2% respectively.
9 Impact Strength There should be no crack/split when 10 kgs of load from 1.5 mtrs height after conditioning at 00 C for 1 hr duration
As per IS: 12235 (Part-9)
10 Internal Coefficient of Friction
Max 0.06 As per TEC/GR/TX/CDS-008/03/MAR-11
11 Oxidation Induction Time (OIT)
OIT > 30 mins One sample/lot
12 Coil Set The duct shall be straight without any bends or kinks and without any deformation except 5 mts from each end
One sample per lot
E Tests on PLB HDPE DUCT Accessories
1 Coupler leakage
Test
The coupler jointing shall meet the air pressure test of 15 Kg/ cm2 for a minimum period of 2 hours
2 Pull Strength of
coupler
The pull strength of the coupler shall not be less than 320 kgf.
2 Duct samples, each 30 cms. long, are jointed with the help of the Coupler, under test. The free ends of the 2 ducts are fitted to
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Abbreviations:
ASTM ---- American Society for Testing & Materials. CC ---- Cubic Centimeter. HDPE ---- High Density Polyethylene. PLB ---- Permanently Lubricated MFI ---- Melt Flow Index. MFR ---- Melt flow Rate IS----- Indian Standards TEC---- Telecommunication Engineering Centre (GOI)
the two suitable grips of a tensile testing machine. The jointing shall meet pulling force of 320 Kgf. The test may be conducted by loading the coupler joined by two pieces of duct for15 minutes using a dead load.
3 Air Tightness Test of End Plug
End Plug shall be tested with a pressure of 1 bar for 30 minutes. (Suitable length shall be taken)
4 Air Tightness Test of Cable Sealing Plug
Cable Sealing Plug shall be tested with a pressure of 1 bar for 30 minutes. (Suitable length shall be taken)