Low-Level Liquid Waste Confinement

DOE-HDBK-1132-99

leakage monitoring outside confinement vessels (e.g., surveillance wells

to detect leakage into ground water);

capability for periodic visual surveillance, including remote visual

surveillance with closed-circuit television;

periodic evaluation of test coupons of primary tank construction materials

installed before the tank was placed in service; and

other surveillance or testing measures, as appropriate.

Low-Level Liquid Waste Confinement . The following should apply to the low-

level liquid waste confinement system:

An impervious dike or berm around the process system should provide

secondary confinement for low-level liquid wastes.

Process and waste storage vessel vents should be provided.

Retention basins should be lined, fenced, and posted with appropriate

radiation warning signs. A system for monitoring radionuclide migration

from the basin should be available.

An impervious berm or dike should be capable of retaining the maximum

radioactive liquid waste inventory that may be released by a leak or

failure of a primary confinement vessel. A capability should exist to

transfer waste that has leaked into the secondary confinement.

A means of removing rain or snow from the secondary confinement area

should be provided unless rain or snow is precluded from entry to the

confinement area. Monitoring or testing of the removed rain or snow

should be considered.

Transuranic-Contaminated Liquid Waste Confinement . The following

features should be considered in the design of a transuranic-contaminated (to

233

include enriched uranium and

U) liquid waste confinement system:

I-80