980 CMR 10.04 - Ancillary Requirements

(1) Dike Requirements.

(a) Each storage tank must be located in a separate dike which has a configuration or design which will

1. prevent liquid from escaping under the spill conditions defined in 980 CMR 10.03(2)(b) l. and 10.03(2)(b)2.

2. intercept a jet of liquid discharged from any feasible location of the component served and at any predictable vertical and horizontal angle of exit and resulting trajectory, except that for low pressure storage tanks having multiple conventionally built vertical cylindrical walls with at least two such walls having Ml load bearing capability, vertical angles of discharge above the horizontal need not be considered.

(b) The basic form of the dike may be an excavation, a natural geological formation, manufactured diking, any combination thereof, or any other retaining structure which can be demonstrated to meet the other requirements of this section.

(c) The impoundment capacity of each dike must have a minimum volumetric liquid impoundment capacity equal to 150% of the volume of liquid in the tank.

(2) Separation of Components. The applicant must design and construct the storage tanks at the site as required by the Department of Public Utilities to enable the predictable movement of personnel, maintenance equipment, and emergency equipment within and around the facility.

(3) Inspection of hisulating Material. The integrity of the insulating material and sealant at each facility must be certified yearly by a registered professional engineer. The results of such inspections must be provided to the Department of Public Utilities as required by that agency. If the insulating material fails to meet the inspection standards, the Department of Public Utilities may order the repair or replacement of the material with the same or superior insulating characteristics as the material originally installed.

(4) Plan for Removal of Precipitation. The applicant must present a plan for the removal of rain, ice, and snow from the diked area surrounding the storage tank. The plan must provide for completion of snow removal within 48 hours after the commencement of the snowfall.

(5) Safety Plan. The company must submit a comprehensive safety plan describing actions to be taken by company personnel and public safety officials in the event of any accident as well as a program of yearly safety consultations with each property owner within the affected portion of the industrial zone. These consultations will be conducted as prescribed by the Department of Public Utilities. The purpose of this requirement is to ensure the maintenance of necessary levels of information and preparedness for those persons who are within the affected portion of the industrial zone.

(6) Alarm System. Each facility must be equipped with an alarm system which must be sounded simultaneously with the alerting of the fire department of an accident. The alarm system must be sufficiently loud to alert persons out to and including the most distant zone specified in 980 CMR 10.02(2)(a)4. The company shall notify the Council that this system is operational and that persons within that zone have been acquainted with the system. The alarm system shall be installed and periodically tested as may be required by the Department of Public Utilities.

Notes

980 CMR 10.04