SECTION 165:25-2-53.1. Underground storage tank internal lining requirements

(a)   A previously lined steel tank that fails precision tightness testing or an internal lining inspection shall not be repaired and must be removed.

(b)   Tank lining may not be used as a method of repair for an unlined tank.

(c)   Within 10 years after lining, and every five years thereafter, lined USTs must be internally inspected and found to be structurally sound, with the lining still performing in accordance with original design specifications.

(d)   Standards that must be referenced during the periodic inspection of lined USTs:

(1)   American Petroleum Institute (API) Publication 1631.

(2)   Ken Wilcox Associates, Inc. "Recommended Practices for Inspecting Buried Lined Steel Tanks Using a Video Camera," First Edition, 1999, Methods A and D.

(3)   National Leak Prevention Association Standard 631.

(4)   PSTD Internal Tank Lining Guidance document and PSTD Interior Lining Inspection Form are available on the Commission website.

(e)   UST owners/operators must submit to PSTD a copy of the certificate of performance (Interior Lining Inspection Form) completed by the inspection provider attesting that the UST meets the performance requirements for both the UST and the lining material. Any UST failing to meet the specified performance requirements cannot be relined. Minor imperfections may be repaired and the tank must be upgraded with a cathodic protection system within six months of the lining repair, or be removed.

(f)   USTs upgraded by the addition of both internal lining and cathodic protection do not require internal periodic inspection if the cathodic protection system has been properly installed and maintained on the UST system.

(g)   Tank owners or their representative must provide 48 hour notification for all lining inspections to PSTD in the online format established by PSTD.

[Source: Added at 23 Ok Reg 2261, eff 7-1-06; Amended at 25 Ok Reg 1867, eff 7-1-08; Amended at 32 Ok Reg 780, eff 8-27-15; Amended at 33 Ok Reg 604, eff 8-25-16; Amended at 37 Ok Reg 1128, eff 10-1-20]