Common use of STANDARDS FOR CONTAINMENT/RELEASE DETECTION Clause in Contracts

STANDARDS FOR CONTAINMENT/RELEASE DETECTION. 1. At a minimum, secondary containment system(s) shall be: (a) Constructed of or lined with materials that are compatible with the hazardous or radioactive substance(s) to be placed in the tank system and shall have sufficient strength and thickness to prevent failure owing to pressure gradients (including static head and external hydrological forces), physical contact with the waste(s) or substances to which it is exposed, climatic conditions, and the stress of daily operation (including stresses from nearby vehicular traffic); (b) Placed on a foundation or base capable of providing support to the secondary containment system, resistance to pressure gradients above and below the system, and capable of preventing failure due to settlement, compression, or uplift; (c) Provided with a leak-detection system that is designed and operated so that it shall detect the failure of either the primary or secondary containment structure or the presence of any leak of hazardous or radioactive constituents, hazardous substances, or accumulated liquid in the secondary containment system within 24 hours, or at the earliest practicable time if the DOE can demonstrate that existing detection technologies or site conditions will not allow detection of a leak within 24 hours; and (d) Sloped or otherwise designed or operated to drain and remove liquids resulting from leaks or precipitation. Leaked substances and accumulated precipitation shall be removed from the secondary containment system within 24 hours, or in as timely a manner as is possible to prevent harm to human health and the environment, if the DOE can demonstrate that removal of the leaked substances or accumulated precipitation cannot be accomplished within 24 hours. (e) Secondary containment for tanks shall include one or more of the following devices: (i) a liner (external to the tank); (ii) a vault; (iii) a double-walled tank; (iv) an equivalent device approved by SCDHEC. (f) In addition to the above requirements, secondary containment systems shall satisfy the following requirements: (i) External liner system shall be: (A) Designed or operated to contain 100 percent of the capacity of the largest tank within its boundary; (B) Designed or operated to prevent run-on or infiltration of precipitation into the secondary containment system unless the collection system has sufficient excess capacity to contain run-on or infiltration. Such additional capacity shall be sufficient to contain precipitation from a 25-year, 24-hour rainfall event; (C) Free of cracks or gaps; and (D) Designed and installed to surround the tank completely and to cover all surrounding earth likely to come into contact with the substances if the substances is released from the tank(s) (i.e., capable of preventing lateral as well as vertical migration of the substances(s)). (ii) Vault systems shall be: (A) Designed or operated to contain 100 percent of the capacity of the largest tank within its boundary; (B) Designed or operated to prevent run-on or infiltration of precipitation into the secondary containment system unless the collection system has sufficient excess capacity to contain run-on or infiltration. Such additional capacity shall be sufficient to contain precipitation from a 25-year, 24-hour rainfall event: (1) Constructed with chemical-resistant water stops in place at all joints (if any); (2) Provided with an impermeable interior coating or lining that is compatible with the stored waste and that will prevent migration of waste into the concrete. (C) Provided with a means to protect against the formation of and ignition of vapors within the vault, if the substances being stored or treated: (1) Meets the definition of ignitable waste under 40 CFR Section 262.21; or (2) Meets the definition of reactive waste under 40 CFR Section 262.21, and may form ignitable or explosive vapors. (D) Provided with an exterior moisture barrier or be otherwise designed or operated to prevent migration of moisture into the vault if the vault is subject to hydraulic pressure. (iii) Double-walled tanks shall be: (A) Designed as an integral structure (i.e., an inner tank completely enveloped within an outer shell) so that any release from the inner tank is contained by the outer shell; (B) Protected, if constructed of metal, from both corrosion of the primary tank interior and of the external surface of the outer shell; and (C) Provided with a built-in continuous leak detection system capable of detecting a leak with 24 hours, or at the earliest practicable time, if the DOE can demonstrate that the existing detection technology or site conditions would not allow detection of a leak within 24 hours. (iv) Ancillary equipment shall be provided with secondary containment (e.g., trench, jacketing, double-walled piping) that meet the requirements of this Agreement except for: (A) Above ground piping (exclusive of flanges, joints, valves, and other connections) that are visually inspected for leaks on a daily basis; (B) Welded flanges, welded joints, and welded connections that are visually inspected for leaks on a daily basis; (C) Seal-less or magnetic coupling pumps that are visually inspected for leaks on a daily basis; and (D) Pressurized above ground piping systems with automatic shut-off devices (e.g., excess flow check valves, flow metering shutdown devices, loss of pressure actuated shut-off devices) that are visually inspected for leaks on a daily basis.

STANDARDS FOR CONTAINMENT/RELEASE DETECTION. 1. At a minimum, secondary containment system(s) shall be: (a) Constructed of or lined with materials that are compatible with the hazardous or radioactive substance(s) to be placed in the tank system and shall have sufficient strength and thickness to prevent failure owing to pressure gradients (including static head and external hydrological forces), physical contact with the waste(s) or substances to which it is exposed, climatic conditions, and the stress of daily operation (including stresses from nearby vehicular traffic); (b) Placed on a foundation or base capable of providing support to the secondary containment system, resistance to pressure gradients above and below the system, and capable of preventing failure due to settlement, compression, or uplift; (c) Provided with a leak-detection system that is designed and operated so that it shall detect the failure of either the primary or secondary containment structure or the presence of any leak of hazardous or radioactive constituents, hazardous substances, or accumulated liquid in the secondary containment system within 24 hours, or at the earliest practicable time if the DOE can demonstrate that existing detection technologies or site conditions will not allow detection of a leak within 24 hours; and (d) Sloped or otherwise designed or operated to drain and remove liquids resulting from leaks or precipitation. Leaked substances and accumulated precipitation shall be removed from the secondary containment system within 24 hours, or in as timely a manner as is possible to prevent harm to human health and the environment, if the DOE can demonstrate that removal of the leaked substances or accumulated precipitation cannot be accomplished within 24 hours. (e) Secondary containment for tanks shall include one or more of the following devices: (i) a liner (external to the tank); (ii) a vault; (iii) a double-walled tank; (iv) an equivalent device approved by SCDHEC. (f) In addition to the above requirements, secondary containment systems shall satisfy the following requirements: (i) External liner system systems shall be: (A) Designed or operated to contain 100 percent of the capacity of the largest tank within its boundary; (B) Designed or operated to prevent run-on or infiltration of precipitation into the secondary containment system unless the collection system has sufficient excess capacity to contain run-on or infiltration. Such additional capacity shall be sufficient to contain precipitation from a 25-year, 24-hour rainfall event; (C) Free of cracks or gaps; and (D) Designed and installed to surround the tank completely and to cover all surrounding earth likely to come into contact with the substances if the substances is released from the tank(s) (i.e.i. e., capable of preventing lateral as well as vertical migration of the substances(ssubstance(s)). (ii) Vault systems shall be: (A) Designed or operated to contain 100 percent of the capacity of the largest tank within its boundary; (B) Designed or operated to prevent run-on or infiltration of precipitation into the secondary containment system unless the collection system has sufficient excess capacity to contain run-on or infiltration. Such additional capacity shall be sufficient to contain precipitation from a 25-year, 24-hour rainfall event: (1) Constructed with chemical-resistant water stops in place at all joints (if any); (2) Provided with an impermeable interior coating or lining that is compatible with the stored waste and that will prevent migration of waste into the concrete.; (C) Provided with a means to protect against the formation of and ignition of vapors within the vault, if the substances being stored or treated: (1) Meets the definition of ignitable waste under 40 CFR Section 262.21; or (2) Meets the definition of reactive waste under 40 CFR Section 262.21, and may form an ignitable or explosive vapors. (D) Provided with an exterior moisture barrier or be otherwise designed or operated to prevent migration of moisture into the vault if the vault is subject to hydraulic pressure. (iii) Double-walled tanks shall be: (A) Designed as an integral structure (i.e.i. e., an inner tank completely enveloped within an outer shell) so that any release from the inner tank is contained by the outer shell;. (B) Protected, if constructed of metal, from both corrosion of the primary tank interior and of the external surface of the outer shell; and (C) Provided with a built-in continuous leak detection system capable of detecting a leak with within 24 hours, or at the earliest practicable time, if the DOE can demonstrate that the existing detection technology or site conditions would not allow detection of a leak within 24 hours. (iv) Ancillary equipment shall be provided with secondary containment (e.g., trench, jacketing, double-walled piping) that meet the requirements of this Agreement except for: (A) Above ground piping (exclusive of flanges, joints, valves, and other connections) that are visually inspected for leaks on a daily basis; (B) Welded flanges, welded joints, and welded connections connections, that are visually inspected for leaks on a daily basis; (C) Seal-less Sealless or magnetic coupling pumps pumps, that are visually inspected for leaks on a daily basis; and (D) Pressurized above ground piping systems with automatic shut-off devices (e.g., excess flow check valves, flow metering shutdown devices, loss of pressure actuated shut-off devices) that are visually inspected for leaks on a daily basis.