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The Pennsylvania Code website reflects the Pennsylvania Code changes effective through 53 Pa.B. 7346 (November 25, 2023).

25 Pa. Code § 245.541. Overfill prevention requirements.


§ 245.541. Overfill prevention requirements.

 (a)  Owners and operators shall ensure that releases due to spilling or overfilling do not occur. The owner and operator shall ensure that the volume available in the aboveground storage tank is greater than the volume of product to be transferred to the tank before the transfer is made and that the transfer operation is monitored constantly to prevent overfilling and spilling. Immediate action shall be taken to stop the flow of regulated substance prior to exceeding tank capacity or in the event that an equipment failure occurs.

 (b)  Aboveground storage tanks shall be installed with the following:

   (1)  A gauge or monitoring device which accurately indicates the level or volume in the tank and is visible to the individual responsible for the transfer of product. The monitoring device shall be installed, calibrated and maintained in accordance with manufacturer’s specifications.

   (2)  A high-level alarm with an automatic high-level cut-off device or a high-level alarm with a manned operator shutdown procedure in operation. The shutdown procedure must be in writing and shall be provided to the Department upon request.

 (c)  Existing aboveground storage tanks must have a gauge or monitoring device installed by October 11, 2000.

 (d)  An existing aboveground storage tank which is taken out of service to perform a scheduled out-of-service inspection or a major modification to the tank shall be upgraded with a high-level alarm with a cut-off device or a high-level alarm with a manned operator shutdown procedure prior to being put back in service.

 (e)  An existing aboveground storage tank system which has not been required to be taken out of service to perform a scheduled inspection or modification must have overfill protection consistent with National industry standards.


   The provisions of this §  245.541 amended November 9, 2007, effective November 10, 2007, 37 Pa.B. 5979; amended December 21, 2018, effective December 22, 2018, 48 Pa.B. 7875. Immediately preceding text appears at serial pages (384210) and (331107).

Cross References

   This section cited in 25 Pa. Code §  245.521 (relating to performance standards for aboveground storage tanks).

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