Current through Register Vol. 35, No. 6, March 26, 2024
Owners and operators of metal storage tank systems with any
metal tank or piping with corrosion protection shall comply with the following
requirements to ensure that releases due to corrosion are prevented until the
storage tank system is permanently closed pursuant to 20.5.115
NMAC.
A. Owners and
operators shall operate and maintain corrosion protection systems to
continuously provide corrosion protection to all metal components of the
storage tank system that routinely contain regulated substances and are in
contact with an electrolyte, to include, but not limited to, soil or water.
Owners and operators shall operate and maintain corrosion protection systems in
accordance with the current edition of an industry standard or code of practice
developed by a nationally recognized association or independent testing
laboratory approved in advance by the department. Owners and operators shall
use one or more of the following to comply with the requirements of this
section:
(1)
Steel Tank
Institute, "STI-P3 Specification and Manual for External
Corrosion Protection of Underground Steel Storage Tanks";
(2)
Underwriters Laboratories
Standard 1746, "Standard for External Corrosion Protection Systems for Steel
Underground Storage Tanks";
(3)
Underwriters' Laboratories
of
Canada CAN4-S603-14-ER1, "Standard for Steel Underground
Tanks for Flammable and Combustible Liquids";
(4)
Underwriters' Laboratories of
Canada
CAN4-603.1, "Standard for External Corrosion Protection
Systems for Underground Steel Tanks for Flammable and Combustible
Liquids";
(5)
Underwriters' Laboratories of
Canada CAN4-S631-M84,
"Isolating Bushings for Steel Underground Tanks Protected with Coatings and
Galvanic Systems";
(6)
NACE International Standard Practice SP 0285, "External Control of
Underground Storage Tank Systems by Cathodic Protection"; or
(7)
Underwriters Laboratories
Standard 58, "Standard for Steel Underground Tanks for Flammable and
Combustible Liquids."
B. Owners and operators shall ensure that all
storage tank systems equipped with cathodic protection are inspected for proper
operation by a qualified corrosion expert in accordance with the following
requirements:
(1) Frequency: owners and
operators shall test all cathodic protection systems as follows:
(a) within six months of installation and at
least every three years thereafter;
(b) within six months of a modification or
repair; or
(c) another reasonable
time frame approved in advance in writing by the department;
(2) Inspection criteria: the
criteria that are used to determine that cathodic protection is adequate as
required by this section must be in accordance with the current edition of an
industry standard or code of practice developed by a nationally recognized
association or independent testing laboratory approved in advance by the
department;
(3) Owners and
operators of storage tank systems shall provide the department a report on the
cathodic protection system test that includes the following:
(a) name of facility, facility address, and
facility ID number;
(b) name of the
technician who performed the test;
(c) certification of the technician in the
type of test performed, including certification numbers, national association
where the certification was obtained, and expiration date of the
certification;
(d) description of
cathodic protection system, for example impressed current, galvanic;
(e) description of storage tank system
including tank ID number, product, capacity, tank type, piping, flex
connectors;
(f) type of test
conducted, such as: three-year test; test within six months of installation;
test within six months after repair or modification; test within three months
after failed test;
(g) whether all
flex connectors or metal risers that routinely contain a regulated substance
and are in contact with an electrolyte are protected from corrosion. If
isolation boots, jackets, or other non-corrodible materials are used to protect
this equipment from corrosion, it shall be determined if they are still
providing protection from corrosion.
(h) tester's pass/fail evaluation and actions
to be taken after evaluation;
(i)
facility drawing of the storage tank system and cathodic protection system,
indicating location of test points on the storage tank system, cathodic
protection test stations, and reference electrode placement; and
(j) description of cathodic protection system
repair or modification.
(4) Owners and operators of storage tank
systems shall provide the department a report on impressed current systems that
includes all requirements listed in Paragraph (3) of Subsection B of this
section and:
(a) rectifier manufacturer,
model, serial number, and what the rectifier is rated for in direct current
output voltage and amperage;
(b)
rectifier tap settings, direct current output voltage and amperage, and hour
meter readings;
(c) description of
structure tested, contact point of test lead, and reference electrode
placement;
(d) structure to soil
potential with current applied in millivolts;
(e) structure to soil potential with current
interrupted, instant OFF in millivolts;
(f) 100 millivolts polarization shift, end
voltage and voltage change; and
(g)
test results.
(5) Owners
and operators of storage tank systems shall provide the department a report on
galvanic systems that includes all requirements listed in Paragraph (3) of
Subsection B of this section and:
(a)
description of structure tested, contact point of test lead, and reference
electrode placement;
(b) structure
to soil potential measured locally in millivolts;
(c) structure to soil potential measured
remotely in millivolts; and
(d)
test results.
(6) Owners
and operators shall use one or more of the following to comply with the
requirements of this section:
(a)
National Fire Protection Association
Standard 30,
"Flammable and Combustible Liquids Code";
(b)
National Fire Protection
Association
Standard 30A "Code for Motor Fuel Dispensing
Facilities and Repair Garages";
(c)
American Petroleum Institute
Publication RP 1615, "Installation of Underground Petroleum Storage
Systems";
(d)
American Petroleum Institute Publication RP 1632, "Cathodic Protection
of Underground Petroleum Storage Tanks and Piping Systems";
(e)
International Code
Council, "International Fire Code";
(f)
NACE International Test Method TM
0101, "Measurement Techniques Related to Criteria for Cathodic Protection of
Underground Storage Tank Systems";
(g)
NACE International Test Method
TM0497, "Measurement Techniques Related to Criteria for Cathodic Protection on
Underground or Submerged Metallic Piping Systems";
(h)
Steel Tank Institute Recommended
Practice R051, "Cathodic Protection Testing Procedures for STI-P3®
USTs";
(i)
NACE
International Standard Practice SP 0285, "External Control of Underground
Storage Tank Systems by Cathodic Protection"; or
(j)
NACE International Standard
Practice SP 0169, "Control of External Corrosion on Underground or Submerged
Metallic Piping Systems".
C. Owners and operators shall inspect storage
tank systems with impressed current cathodic protection systems every 60 days
to ensure the equipment is running properly. Owners and operators shall record
the date, time, readings and results of each inspection in a log kept at the
facility, and indicate who performed each inspection.
D. Owners and operators shall monthly inspect
any equipment or materials used to isolate metal components of UST systems and
shall repair or replace equipment and materials used to meet corrosion
protection requirements in this section.
E. For storage tank systems using cathodic
protection, owners and operators shall maintain records of the operation of the
cathodic protection in accordance with 20.5.107.714 NMAC to demonstrate
compliance with the performance standards in this section. These records shall
provide the following:
(1) the results of the
last three inspections required in Subsection C of this section; and
(2) the results of testing from the last two
inspections required in Subsection B of this section.
[The department provides an optional form that may be used
for the cathodic protection system test report required in Subsection B. The
form is available on the Petroleum Storage Tank Bureau's pages on the
department website, or by contacting the Petroleum Storage Tank Bureau at
505-476-4397 or 2905 Rodeo Park Drive East, Building 1, Santa Fe, New Mexico
87505.]
