| AWWA Comment Period on ANSI/AWWA C214 Standard for Tape Coatings for Steel Water Pipelines
AWWA Articles

AWWA Comment Period on ANSI/AWWA C214 Standard for Tape Coatings for Steel Water Pipelines

The AWWA Standards Council has approved revisions to this standard for public comment. The publication of this information on the AWWA website begins the 30-day AWWA comment period for action on standards by the Standards Council. Purchase a review copy during the comment period for $20 each.

AWWA Comment Period is now closed. Review copies are no longer available.

Send comments to: 
Liz Ralph
303.347.6177 phone
303.795.7603 fax

The review copy will be edited for publication and may also be revised as appropriate based on any comments received during the public comment period. Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.

Final publication of the standard may take several months. When it is available, a notice will be published in the official notice section of Journal – American Water Works Association. The standard becomes an effective AWWA standard on the first day of the month following such publication in Journal – American Water Works Association.

SCOPE
This standard describes the materials and application of tape coating systems in coating plants at fixed sites using coating techniques and equipment as recommended by the tape coating manufacturer. For normal construction considerations, prefabricated polyolefin tapes are applied as a three-layer system consisting of (1) liquid adhesive, (2) corrosion-preventive tape (inner layer), and (3) mechanical-protective tape (outer layer). This standard establishes the minimum requirements for tape coating systems used on the exterior of steel water pipelines in the potable-water supply industry. Continuous monitoring of all application procedures for the tape coating systems shall be performed by the constructor.

1.1.1 Maximum temperatures. AWWA pipe coating standards are written for and based on the service temperature of potable water. These coating systems have performed at higher temperatures. Consult the coating manufacturer for conditions and limitations.
1.1.2 Conditions not described in this standard. This standard does not describe the additional materials and procedures that may be required for difficult conditions, such as those encountered in rocky areas or where soil conditions are known to be severe and in construction of underwater lines, casing pipe, and river crossings outside the scope of ANSI/AWWA C214. The manufacturer should be consulted for specific recommendations when these conditions exist.

MAJOR REVISIONS
1. The title of the standard was changed to be consistent with other AWWA steel pipe coating standards.
2. Sec. 2 References was updated.
3. Table 1 Physical properties of liquid adhesive, was deleted.
4. Requirements were divided into prequalification requirements for inner- and outer-layer tapes and total-coating system and quality control properties of the applied coating system. Related changes were made to the content and titles of Tables 2-5.
5. Removed minimum value for nonpolyolefanic material in Tables 2 and 3.
6. Increased dielectric strength in Tables 2 and 3 to 450V/mil (was 6kV/20 mil and 12kV/50 mil).
7. Removed maximum thickness requirements in Tables 2, 3 and 5.
8. Added cathodic disbondment requirement to Table 4. The maximum radius is 12 mm when tested per ASTM G8.
9. Table 5 was created to list quality control properties for the coated pipe. Test Method 5.5.3 was created to detail the peel adhesion test method of a coated pipe.
10. Sec. 4.4.4 Coating repair in plant and field, was revised.
11. Sec. 4.4.5 Coating of welded and mechanical field joints, was revised.
12. All existing wording in Sec. 4.5 Field Procedures of the previous edition of C214 was removed. The section now references AWWA C604.
13. Section 5 verification was updated to match the new language being used in all coating standards.
14. A new Sec. 5.2.15 on cathodic disbondment was added.
15. A new Sec. 5.3 Quality assurance and records, was added.
16. A new Sec. 5.4 Inspecting and testing by the purchaser, was added.
17. A new Sec. 5.5. Coated pipe test quality requirements of coating systems was added including a new section on adhesion testing (Sec. 5.5.3)
18. The title of old Sec. 5.5. Nonconformance (previous edition) was changed to Sec. 5.6 Rejection, and the section was expanded to include coating work and coated pipe.
19. Sec. 6.2.2 Shipping, handling, and storage, was revised. The sections on stacking, shipping, loading, and trench side storage were deleted.
Advertisement
Advertisement
Advertisement