Spreadsheet: larry_campbell__21055__tank reqs
Sheet: Sheet1

Tank Inspection Requirements
40 CFR 60, Subparts K, Ka, Kb, 49 CFR 195, and [NAME]
 |  | 40 CFR 60 |  |  |  | API 653 Section 4
TASK | Notes | K* | Ka | Kb | 49 CFR 195 | Inspections
Routine in-service visual inspection (Section 4.3.1) | 1 |  |  |  |  | monthly
External inspection (Section 4.3.2) | 2 |  |  |  |  | every 5 years or RCA/4N
Ultrasonic thickness inspection (Section 4.3.3) | 3, 4,5 |  |  |  |  | every 5 years or [NAME]
Internal inspection (Section 4.4) | 6 |  |  |  |  | 10 or 20 years
Breakout tank physical integrity test for tanks not inspected under 49 CFR 195.432 (b) or (c) | 7 |  |  |  | every calendar year at intervals not exceeding 15 months
Physical integrity test of in-service atmospheric and low pressure steel aboveground breakout tanks  (49 CFR 195.432(b)) | 7 |  |  |  | Per API Standard 653 Section 4
Physical integrity test of in-service steel aboveground breakout tanks built to [NAME] 2510 (49 CFR 195.432(c)) | 7 |  |  |  | Per API Standard 510 Section 6
Pnuematic testing for aboveground breakout tanks placed in service after 10/2/00 built to [NAME] 12F | 7 |  |  |  | Per API Specification 12F Section 5.3
Pnuematic and hydrostatic testing for aboveground breakout tanks placed in service after 10/2/00 built to API Standard 620 | 7 |  |  |  | Per API Specification 620          Section 5.18
Pnuematic and hydrostatic testing for aboveground breakout tanks placed in service after 10/2/00 built to API Standard 650 | 7 |  |  |  | Per API Specification 650 Section 5.3
Pressure testing for aboveground breakout tanks placed in service after 10/2/00 built to [NAME] 2510 | 7 |  |  |  | Per [NAME] and Pressure Vessel Code, [NAME]. VIII, [NAME]. 1 or 2
Gap measurements for external floating roof tanks between primary seal and tank wall |  |  | within 60 days of initial fill, every 5 years after | within 60 days of initial fill, every 5 years after
Gap measurements for external floating roof tanks between secondary seal and tank wall |  |  | within 60 days of initial fill, every year after | within 60 days of initial fill, every year after
Visually inspect internal floating roof |  |  |  | prior to filling
Visually inspect primary seal |  |  |  | prior to filling
Visually inspect secondary seal |  |  |  | prior to filling
Vessels equipped with a mechanical shoe or liquid-mounted primary seal, visually inspect the internal floating roof |  |  |  | once a year
Vessels equipped with a mechanical shoe or liquid-mounted primary seal, visually inspect the primary seal |  |  |  | once a year
Vessels equipped with a mechanical shoe or liquid-mounted primary seal, visually inspect the secondary seal |  |  |  | once a year
Vessels with double-seal system , visually inspect the vessel |  |  |  | every 5 years
Visually inspect the internal floating roof |  |  |  | each time vessel is emptied and degassed
Visually inspect the external floating roof |  |  |  | each time vessel is emptied and degassed
Visually inspect the primary seal |  |  |  | each time vessel is emptied and degassed
Visually inspect the secondary seal |  |  |  | each time vessel is emptied and degassed
Visually inspect the slotted membranes |  |  |  | each time vessel is emptied and degassed
Visually inspect the gaskets |  |  |  | each time vessel is emptied and degassed
Visually inspect the sleeve seals |  |  |  | each time vessel is emptied and degassed
* - 40 CFR 60 Subpart K does not require inspections.
Notes:
1. May be performed by owner/operator.
2. Inspection by an authorized  API 653 inspector.  RCA is the difference between the measured shell thickness and the minimum required thickness in mils, and N is the shell corrosion rate in mils/year, whichever is less.
3. When the corrosion rate is not known the maximum interval shall not exceed 5 years.
4. When the corrosion rate is known the [NAME] interval shall be the smaller of RCA/2N years where  RCA is the difference between the measured shell thickness and the minimum required thickness in mils, and N is the shell corrosion rate in mils/year, or 15 years.
5. Internal inspection of the tank shall, when the tank is out of service, can be substituted if the internal inspection interval is equal to or less than RCA/2N or 15 years.
6. If the corrosion rate is known the inspection interval shall not exceed 20 years.  If the corrosion rate is not known the bottom thickness shall be determined by inspection within the next 10 years to establish corrosion rates.
7. All crude oil breakout tanks and pipeline  are potentially subject to 49 CFR 195 (DOT regulation).