A laboratory seeking certification for performance of
radiochemical analyses of public water supplies shall meet the following
instrument(s) required for measurement of those radionuclides described in 15A
NCAC 18C .1500
shall be located in a separate room from rooms in which samples
and standards are being prepared or other types of chemical analyses are being
performed. The temperature of this room shall not exceed 27°C. Temperature
variation under normal operating conditions shall not exceed 3°C.
(2) All instruments shall be properly
grounded, and a regulated power supply, either external or internal, shall be
available to each instrument.
In areas where radioactive standards are being prepared, care shall be taken to
minimize contamination of surfaces and personnel. Bench surfaces shall be an
impervious material covered with absorbent paper, or trays (stainless steel,
plastic, or fiberglass) lined with absorbent paper.
Laboratory space shall be 200 square feet
per person and shall contain no less than 6 linear feet of bench space per
analyst and include the following:
with hot and cold running water;
(b) electrical outlets (120 V a.c.
(c) source of distilled
or deionized water;
(d) gas supply
(natural gas or liquified petroleum); a propane cylinder with proper
attachments may be permitted in laboratories doing limited amounts of
(e) vacuum line,
pump, or aspirator; and