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HYDROSTATIC MONITORING C1. PREPARATION ♦ Tanks with hydrostatic monitoring systems normally ar- rive with monitoring fluid installed in the annular space and some fluid in the reservoir. ❑ After installation, the fluid level in the reservoir must be filled to the proper level. ❑ Buckets of brine are supplied with the tank for this purpose. ♦ If tank has reservoir installed, and arrives without moni- toring fluid pre-installed, the annular space can be filled with monitoring fluid after the tanks have been placed in the excavation. ❑ Provisions must be made to access the reservoir for brine filling and venting the air from the annular space at the end of the tank opposite the reservoir. ❑ Contact Tank Technical Support for instructions. C2. JOBSITE SAFETY PRECAUTIONS Always wear safety glasses and protective clothing when mixing or handling any antifreeze solution. ♦ If any of the following accidents occur, quickly take the steps listed. ♦ Contact with eyes (may cause minor eye injuries). • Promptly flush eyes with plenty of water for at least 15 minutes. • Get medical attention. ♦ Contact with skin (may cause minor skin irritations). • Promptly flush skin with plenty of water. ♦ Ingestion (may cause gastrointestinal irritation or ul- ceration). • Induce vomiting (if swallowed). • Immediately consult a physician. ♦ Spillage (may cause surfaces on which people walk to remain wet longer). • Flush area with plenty of water. 18 C3. RESERVOIR FLUID HEIGHT ADJUSTMENT ♦ Add brine to the reservoir until the reservoir fluid level matrhPs the fnllnwinn table values - Tank Size Liquid Level Measurement (L) When Tank is Empty Liquid Level Measurement (L) When Tank is Full 4'(1 M and less) 5" 8" 4' (over 1 M), 6' 3-112" 5" a 3-112" 5" 10' (10M, 12M, 15M) 3-112" 5-112" 10' (20M) 4" 6-112" 10' (25M, 30M) 4-112" 8-112" 10' (over 30M) 4" 7" CONCRETE TRAFFIC PAD RISER PIPE CAP Brine AND FITTING W/ VENT RISER PIPE FRP 0°F RESERVOIR RESERVOIR SENSOR -20°F HIGH LEVEL ALARM BRINE LIQUID -40°F LEVEL (Lj LOW LEVELALARM DOUBLE WALL TANK ♦ The brine (non-toxic) is a solution of 30% calcium chlo- ride in water with a biodegradable green tint and a freeze point of -40°F. ♦ Propylene glycol (food grade) may also be used to ad- just the reservoir fluid level. Based on expected tem- peratures, the concentration should be as follows: Freeze Protection % Glycol Mixture with water Brine 20°F 20% NIA 0°F 30% NIA -20°F 40% NIA -40°F 50% Premixed' *As supplied by Containment Solutions C4. RESERVOIR ALARM ACTIONS If the reservoir sensor indicates a high or low level alarm, it is necessary to first determine that the alarm is not the result of an incorrect initial fluid level setting. ❑ Remove the sensor. ❑ Test the sensor for proper operation. ❑ Reset the fluid level in the reservoir by adding or removing fluid as indicated in section C3. ❑ Reinstall the sensor. NOTE: If a second low or high level alarm occurs, contact Containment Solutions Field Service.