D

Standard Recommended Practice

Field-Applied Heat-Shrinkable Sleeves for Pipelines: Application, Performance, and Quality

Control This NACE International standard represents a consensus of those individual members who have reviewed this document, its scope, and provisions. Its acceptance does not in any respect preclude anyone, whether he has adopted the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not in conformance with this standard. Nothing contained in this NACE International standard is to be construed as granting any right, by implication or otherwise, to manufacture, sell, or use in connection with any method, apparatus, or product covered by Letters Patent, or as indemnifying or protecting anyone against liability for infringement of Letters Patent. This standard represents minimum requirements and should in no way be interpreted as a restriction on the use of better procedures or materials. Neither is this standard intended to apply in all cases relating to the subject. Unpredictable circumstances may negate the usefulness of this standard in specific instances. NACE International assumes no responsibility for the interpretation or use of this standard by other parties and accepts responsibility for only those official NACE International interpretations issued by NACE International in accordance with its governing procedures and policies which preclude the issuance of interpretations by individual volunteers.

Users of this NACE International standard are responsible for reviewing appropriate health, safety, environmental, and regulatory documents and for determining their applicability in relation to this standard prior to its use. This NACE International standard may not necessarily address all potential health and safety problems or environmental hazards associated with the use of materials, equipment, and/or operations detailed or referred to within this standard. Users of this NACE International standard are also responsible for establishing appropriate health, safety, and environmental protection practices, in consultation with appropriate regulatory authorities if necessary, to achieve compliance with any existing applicable regulatory requirements prior to the use of this standard.

CAUTIONARY NOTICE: NACE International standards are subject to periodic review, and may be revised or withdrawn at any time without prior notice. NACE International requires that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of initial publication. The user is cautioned to obtain the latest edition. Purchasers of NACE International standards may receive current information on all standards and other NACE International publications by contacting the NACE International Membership Services Department, 1440 South Creek Drive, Houston, Texas 77084-4906 (telephone +1 [281] 228-6200).

Approved 2003-11-14 NACE International

1440 South Creek Dr. Houston, Texas 77084-4906

+1 (281)228-6200

ISBN 1-57590-177-3 2003, NACE International

NACE Standard RP0303-2003 Item No. 21101

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NACE International i

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Foreword

This NACE standard recommended practice provides the most current technology and industry practices for the use of field-applied heat-shrinkable sleeve systems. This standard is intended for use by corrosion control personnel, design engineers, project managers, purchasers, and construction engineers and managers. It is applicable to underground steel pipelines in the oil and gas gathering, distribution, and transmission industries.

This standard was prepared by NACE Task Group 248 on Heat-Shrinkable Sleeve Coatings for External Repair, Rehabilitation, and Weld Joints on Pipelines. This Task Group is administered by Specific Technology Group (STG) 03 on Protective Coatings and LiningsImmersion/Buried. It is also sponsored by STG 04 on Protective Coatings and LiningsSurface Preparation, and STG 35 on Pipelines, Tanks, and Well Casings. This standard is issued by NACE International under the auspices of STG 03.

In NACE standards, the terms shall, must, should, and may are used in accordance with the definitions of these terms in the NACE Publications Style Manual, 4th ed., Paragraph 7.4.1.9. Shall and must are used to state mandatory requirements. The term should is used to state something considered good and is recommended but is not mandatory. The term may is used to state something considered optional.

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ii NACE International

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NACE International Standard

Recommended Practice

Field-Applied Heat-Shrinkable Sleeves for Pipelines: Application, Performance, and Quality Control

Contents

1. General.......................................................................................................................... 1 2. Definitions...................................................................................................................... 1 3. Coating Systems ........................................................................................................... 1 4. Coating Material ............................................................................................................ 1 5. Coating Performance .................................................................................................... 2 6. Surface Preparation of Pipe .......................................................................................... 2 7. Coating Application ....................................................................................................... 4 8. Inspection and Repair ................................................................................................... 4 References.......................................................................................................................... 4 Table 1: Heat-Shrinkable-Sleeve Properties...................................................................... 3

________________________________________________________________________ed.

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ene

nal surfaces of coated pipe. Included are methods for quali-

1.2pre

1.3

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Def

Coating Materials: Pre-manufactured heat-shrinkable which the heat-shrinkable sleeve girth weld joint-protection

be applied.

(a) Primer (if specified)

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Coa

following information in writing to the purchaser and/or (b) Laboratory performance test results of the

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NACE International 1

applicator:

basic physical properties of the coating materials; and; __________________________________

Section 4:

4.1 Coating Material Supplier Information

4.1.1 The coating material supplier shall furnish the ting Material

(a) Directions for handling and storing the coating material;

(b) Pre-manufactured heat-shrinkable sleeve (wrap-around or tubular-type). The heat-shrinkable sleeve

lers, etc., compatible with and made from similar materials as the heat-shrinkable sleeves.

Coating System: The complete number and types of coats applied to a substrate in a predetermined order.

Filler Material: Compatible material used under a heat-shrinkable sleeve to fill voids or bridge transitions.

Holiday: A discontinuity in a protective coating that exposes unprotected surface to the environment.

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Section 3: Co

3.1 The standard for heat-shrinkable sleeves required for normal conditions contains the following components:

Repair Area: Area of original coating system that has been damaged and is being repaired using the coating materials.

Shelf Life: The maximum allowable storage time for a coat-ing material prior to its use.

Supplier: The manufacturer and/or distributor of the coating material.

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ating Systems

shall consist of a heat-recoverable polyolefin backing coated with a mastic or hot-melt type adhesive layer.

(c) Coating repair materials (if required). sleeves and associated accessory products, e.g., primer, fil-ler materials, coating repair materials, etc.

Coating Repair Materials: Pre-manufactured patches, fil-

system must adhere and be compatible.

Purchaser: The owner company or the authorized agency that has the authority for the pipe to which the coating is to ___________________________________

Section 2:

Applicator: The organization responsible to the purchaser for the coating application. initions

Inspector: The authorized agent of the purchaser.

Mainline Coating: The plant-applied pipeline coating to fying and controlling the quality of a heat-shrinkable sleeve, guidelines for proper application, and inspection and repair techniques to ensure its long-term performance.

around or tubular-type sleeve systems.

Section 1: G

1.1 This standard presents guidelines for establishing mini-mum requirements to ensure proper application and perfor-mance of field-applied, heat-shrinkable sleeves to the exter-ral

This standard is applicable to coating systems used to vent corrosion in conjunction with cathodic protection. This standard is applicable to heat-shrinkable wrap-RP0303-2003 .

4.2 Handling of Coating Materials by the supplier may be rejected by the purchaser.

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atin

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P

6.3 The mainline coating edge shall be beveled to 30 or

h Floomb

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- Single-user license only, copying/networking prohibite2 NACE International less either at the coating factory or in the field prior to instal-lation of the heat-shrinkable-sleeve coating system.

6.4 The pipe shall be preheated to at least 5C (9F) above the dew point to remove the presence of moisture prior to surface cleaning.

6.5 Prior to blast or wire-brush cleaning, the surface of the pipe, weld, or repair area shall be inspected and, if required, ___________________________

(1) SSPC: The Society for Protective Coatings (SSPC), 40 24th St., 6t

(2) International Organization for Standardization (ISO), 1, rue de Vare6.8 The heat-shrinkable-sleeve coating system shall be installed before any corrosion products form but within four hours after surface preparation. If the heat-shrinkable-sleeve coating systen is not installed within the specified period, the surface preparation shall be repeated.

6.9 Wire-brush cleaned surfaces shall leave a coarse pro-file such that the surface is not polished.

r, Pittsburgh, PA 15222-4656. , Case postale 56, CH-1211 Geneva 20, Switzerland. coated for visible dents, scabs, slivers, and other damage. These defects shall be noted and corrected under the direc-tion of the pipeline purchaser.

6.7 Blast cleaned surface profiles shall be angular and a minimum of 50 m (2.0 mils) from peak to valley or as otherwise specified by the supplier.4 5.4 Performance requirements have been identified for mastic-based and hot-melt type adhesives. Mastic adhe-

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Section 6: Surface

6.1 This section covers recommended procedures for sur-face preparation to ensure the desired performance of a heat-shrinkable sleeve. Note that surface preparation is crit-ical to performance and, therefore, the required surface pre-paration must be clearly stated in suppliers installation liter-ature and performance documentation.

6.2 The applicator shall inspect the pipe surface to be __________________________________

reparation of Pipe

cleaned as described in SSPC(1)-SP 12 to remove the presence of oil, grease, or other contaminants.

6.6 Proper surface preparation requires that metal surfaces be blast cleaned or wire-brush cleaned to achieve the recommended surface preparation (NACE, SSPC, or ISO(2) 3) as outlined in the respective suppliers installation guides and agreed to by the purchaser. compatible with the mainline coating as demonstrated by the coating-specific performance testing as identified in Table 1.

strate fitness for use through prequalification testing, con-sisting of a field application and subsequent destructive peel adhesion testing over the steel cutback and mainline coating. Additional tests may be specified by the purchaser.

4.2.1 Coating material batches shall be identified by a batch coding system devised by the supplier. The batch code shall include a reference to the date of manufacture. Coating materials shall be shipped and stored according to recommendations from the supplier so that contamination or adverse effects on the coating are avoided.

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Section 5: Co

5.1 Recommended characteristics of an applied coating system are outlined in NACE Standard RP0169.1

5.2 The heat-shrinkable sleeve coating system and coating repair materials shall meet the performance characteristics as specified in Table 1.

5.3 The heat-shrinkable sleeve coating system must be 4.2.2.1 Any rejected coating material shall be immediately removed from the job site. At the dis-cretion of the purchaser, any batch of coating mat-erial that has exceeded the recommended shelf life may be tested to verify that it meets or exceeds the requirements as set forth herein or by other industry standards as agreed on by the purchaser and the applicator.

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g Performance

sives typically have an upper operating temperature range of 80C (180F) while hot-melt adhesives can typically per-form up to 120C (250F). When performance requirements are identified as at operating temperature, the supplier shall provide results as noted in Table 1 at the rated pipe-line operating temperature for the product or system.

5.5 At the purchasers option, the supplier shall demon-RP0303-2003

(c) Material safety data sheets (MSDS).

4.2.2 Shelf Life: Any batch of coating material that has exceeded the recommended shelf life when delivered d.

Table 1: Heat-Shrinkable-Sleeve Properties

Unit Mastic Sleeve Requirement Hot-Melt Sleeve

Requirement

k

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NACE International 3

Heat Aging: 150C (300F)/21 days ASTM D 638 % Elongation >200 >200

Heat Shock: 225C (437F)/4 hours ASTM D 26716 Visual No cracking, flow, or dripping

No cracking, flow, or dripping

Volume Resistivity ASTM D 2577 ohm-cm 1013 min. 1013 min.

Dielectric Voltage Breakdown ASTM D 1498 kV/mm (kV/in.) 5 min. (125 min.) 5 min. (125 min.)

Impact at 23C (73F) ASTM G 149 J/mm (ft-lb/in.) 4.5 (40) 5.6 (50)

Adhesion to Steel Cutback and Mainline Coating

ASTM D 100010 N/cm (pli) 25 (15) 80 (45)

Lap Shear Strength(C) at ambient temperature at operating temperature

ASTM D 100211 kPa (psi) 175 (25)

20 (3)

700 (100) 50 (7)

Cathodic Disbondment at 23C (73F)

ASTM G 812 mm rad. (in. rad.)

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ati

7.4 If a primer is specified, it shall be applied uniformly and installation literature.

damage the system.

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ecti

with NACE Standard RP027417 and set at a voltage in conformance with the suppliers specifications.

tions as identified in its application procedures.

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re

eva, Switzerland: ISO). 7. ASTM D 257 (latest revision), Test Methods for DC

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4 NACE International

Resistance or Conductance of Insulating Materials (West Conshohocken, PA: ASTM).

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Refe

1. NACE Standard RP0169 (latest revision), Control of External Corrosion on Underground or Submerged Metallic Piping Systems (Houston, TX: NACE).

2. SSPC-SP 1 (latest revision), Solvent Cleaning (Pitts-burgh, PA: SSPC).

3. ISO 8501-1 (latest revision), Preparation of Steel Sub-strates Before Application of Paints and Related ProductsVisual Assessment of Surface CleanlinessPart 1: Rust Grades and Preparation Grades of Uncoated Steel Sub-strates After Overall Removal of Previous Coatings (Gen-

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nces

4. NACE Standard RP0287 (latest revision), Field Meas-urement of Surface Profile of Abrasive Blast Cleaned Steel Surfaces Using a Replica Tape (Houston, TX: NACE).

5. ASTM D 638 (latest revision), Standard Test Method for Tensile Properties of Plastics (West Conshohocken, PA: ASTM).

6. ASTM D 2671 (latest revision), Standard Test Methods for Heat-Shrinkable Tubing for Electrical Use (West Con-shohocken, PA: ASTM). 8.1.2 Holiday Inspection: The entire coating system of each field application area may, at the purchasers op-tion, be inspected with a holiday detector in accordance

8.1.4 Repairs: Repairs required due to holiday or destructive testing shall be identified, marked, and repaired in accordance with the suppliers specifica-

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Section 8: Insp

8.1 Coating System Inspection and Tests

8.1.1 Surface Preparation: The surface preparation of the cleaned pipe shall be monitored in accordance with SSPC-VIS 116 or ISO 8501-13 to ensure compliance with Paragraph 6.6. _________________________________

on and Repair

8.1.3 Peel Adhesion Testing: Adhesion of the installed coating system may, at the purchasers option, be veri-fied through a field peel adhesion test in accordance with ASTM D 1000 using an electronic hand peel gauge and controlling conditions as closely as pos-sible. be free of runs, sags, drips, bare spots, and other defects.

7.5 If a primer is specified, it shall be of a 100%-solids mat-erial applied at a minimum film thickness of 100 m (4 mils)

7.9 Backfilling shall only be done after the heat-shrinkable-sleeve coating system has cooled to ambient temperature and the backfill shall not contain any material that will Section 7: Co

7.1 This section describes coating material selection and application parameters for obtaining optimum performance of a field-applied heat-shrinkable-sleeve coating system.

7.2 The purchaser shall specify all components of the coat-ing system, as agreed to with the supplier, and the same supplier shall furnish these components.

7.3 Prior to application of the primer (if used) or heat-shrinkable sleeve, the girth weld and adjacent line coating shall be preheated as recommended by the supplier. ng Application

as measured by a calibrated electronic film-thickness meas-uring instrument, or wet-film gauge.

7.6 Prior to application of the heat-shrinkable-sleeve coat-ing system as recommended by the supplier, the primer shall be cured as specified.

7.7 The purchaser shall specify the mainline coating cut-back distance.

7.8 The heat-shrinkable-sleeve coating system shall be applied as specified by the individual suppliers detailed RP0303-2003 .

8. ASTM D 149 (latest revision), Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies (West Conshohocken, PA: ASTM).

9. ASTM G 14 (latest revision), Standard Test Method for Impact Resistance of Pipeline Coatings (Falling Weight Test) (West Conshohocken, PA: ASTM).

10. ASTM D 1000 (latest revision), Test Methods for Pres-sure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applications (West Conshohocken, PA: ASTM).

11. ASTM D 1002 (latest revision), Standard Test Method for Apparent Shear Strength of Single-Lap Adhesively Bonded Metal Specimens by Tension Loading (West Con-shohocken, PA: ASTM).

12. ASTM G 8 (latest revision), Standard Test Method for Cathodic Disbonding of Pipeline Coatings (West Consho-hocken, PA: ASTM).

13. ASTM G 42 (latest revision), Standard Test Method for Cathodic Disbonding of Pipeline Coatings Subjected to Ele-vated Temperatures (West Conshohocken, PA: ASTM).

14. ASTM D 870 (latest revision), Practice for Testing Water Resistance of Coatings Using Water Immersion (West Conshohocken, PA: ASTM).

15. ASTM D 570 (latest revision), Standard Test Method for Water Absorption of Plastics (West Conshohocken, PA: ASTM).

16. SSPC-VIS 1 (latest revision), Visual Standard for Abrasive Blast Cleaned Steel (Pittsburgh, PA: SSPC).

17. NACE Standard RP0274 (latest revision), High-Volt-age Electrical Inspection of Pipeline Coatings Prior to Instal-lation (Houston, TX: NACE).

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NACE Standard RP0303-2003ForewordContentsSection 1:Section 2:Section 3:Section 4:Section 5:Section 6:Section 7:Section 8:References