Standard 1746, Edition 3
UL 1746

Standard for External Corrosion Protection Systems For Steel Underground Storage Tanks

UL CSDS Proposal Edition 3 Published Date: November 22, 2013 Last Revision: December 19, 2014

Summary of Topics b1746_3_20131122_sum.html

Subject 1746

Bulletin Dated: November 22, 2013


The following changes in requirements to the Standard for External Corrosion Protection Systems for Steel Underground Storage Tanks, UL 1746, are being proposed:

1. Revisions to the scope section to clarify and update the requirements

2. Revisions to the glossary section to clarify, update, and provide consistency with other underground storage tank standards

3. Addition of a capacity and dimensions section and relocation of the requirements into this section

4. Revisions to the lift lug tests which includes the use of calculations for evaluating lift lugs

5. Addition of biodiesel blends as Type A immersion liquid

6. Revisions to Table 24.1 and time for testing of physical property

7. Deletion of abrasion test

8. Addition of requirements for interior linings

9. Alternative to Lift Lug Test

10. Revision of leakage test in manufacturing and production tests

11. Revision to indentation test for Part IV coated tanks

12. Revisions to installation instructions

13. Addition of interstitial communication test

14. Deletion of terms Type I Tank and Type II Tank

15. Clarification of requirements for FRP matrix (resin & fibers)

Back to Standard 1746, Edition 3

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