7 Del. Admin. Code § 1352-B-8.0

Current through Register Vol. 28, No. 7, January 1, 2025

Section 1352-B-8.0 - Design and Installation Requirements for Overfill and Spill Prevention

8.1 General Requirements for Design and Installation of Overfill and Spill Protection

8.1.1 Owners or Operators shall institute safe fill, shutdown and transfer procedures or equivalent measures established by the Department, that shall ensure that spills resulting from AST overfills or other Regulated Substance transfer operations do not occur.

8.1.2 Overfill equipment shall be installed on all ASTs.

8.1.3 Overfill equipment shall be installed on all ASTs reactivated per PART B, Section 16.3.

8.1.4 Receipts of Regulated Substance shall be authorized by the Operator, or Facility personnel trained by the Operator or Owner. The authorizing person shall ensure the volume available in the AST(s) is greater than the volume of Regulated Substance to be transferred to the AST(s) before the transfer operation commences. The Operator shall ensure that all AST fill valves not in use are secured and that only the AST(s) designated is receiving Regulated Substance. The Operator shall ensure that the transfer operation is monitored either by manual or automatic means to prevent an overfill.

8.1.5 If the transfer operations are not being continuously monitored by a transfer Operator appropriately trained in safe transfer procedures, the AST shall be equipped with overfill prevention equipment that shall automatically shut off the flow into the AST when the AST is no more than 95% full or other safe fill level approved by the Department. All automatic shutoff equipment shall be equipped with a fail-safe mechanism that shall function in the event of power failure, malfunction, or similar event.

8.1.6 If the transfer operations are being continuously monitored by a transfer operator appropriately trained in safe transfer procedures, the AST shall be equipped with a high-level alarm or other automatic mechanism approved by the Department, that shall immediately alert the Operator to prevent an overfill event.

8.1.6.1 The high-level alarm shall be monitored continuously and upon alert the Operator shall implement safe shut down procedures to prevent an overfill.

8.1.6.2 The alarm shall consist of a visual and audible device capable of alerting the transfer Operator both by sight and hearing, to prevent an overfill situation. If the Operator is in a surveillance station, this alarm shall cause a warning light and audible signal in that station to activate. In addition, this system shall alarm on failure, malfunction, or power loss.

8.1.7 If installed, an automatic shutdown system utilized during transfer of a regulated substance shall include the capability to direct the flow of a regulated substance to another AST capable of receiving the transferred regulated substance or the capability to shut down the pumping or transfer system.

8.1.8 All ASTs shall be equipped with a gauge or other measuring device that is readily visible and accurately indicates the level of the regulated substance or quantity of the regulated substance in the AST.

8.1.9 The overfill prevention and measuring device shall operate independently of each other.

7 Del. Admin. Code § 1352-B-8.0

20 DE Reg. 815 (4/1/2017)
27 DE Reg. 536 (1/1/2024) (Final)