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All Single • Double PEA GRAVEL CRUSHED STONE ♦ In the unlikely event a tank leak is discovered, dis- Approved Gravel Approvgd Crushed Stone continue the installation and immediately call Con- Must consist of clean, or Crushed Gravel naturally-rounded aggregate Must be washed with angular tainment Solutions Field Service to schedule a re- with a mix of particle sizes particle size ranging pair. ranging between 1/8" and between 1/8" and 1/2". 3/4". ♦ Prepare fittings for testing No more than 5%may No more than 5% pass the#8 sieve. may pass the#8 sieve. ❑ Remove fitting plugs. Do gravel density must Dry gravel density must be a minimum of 95 pounds be a minimum of 95 pounds ❑ Clean factory pipe dope from plugs and fittings. per cubic foot. per cubic foot. ❑ Apply pipe dope suitable for the material being Note: If material which meets these specifications is not avail- stored in the tank. able,contact the Containment Solutions Tank Technical Sup- port department for information on approved alternate mate- ❑ Reinstall and tighten fitting plugs. rials and installation instructions. Using other than approved bedding and backfill materials without Containment Solutions's prior written approval will void the tank warranty and may re- TESTING SINGLE-WALL TANKS sult in tank failure. DO NOT These tests must be performed before installing tanks: ♦ Mix approved backfill with sand or native soil. ♦ Pressurize tanks. ♦ Backfill tank with sand or native soil. ❑ 4'through 10' diameter tanks to 5 psi maximum. CAUTION ❑ 12' diameter tanks to 3 psi maximum. Using unapproved backfill material may result ❑ A contractor supplied pressure relief valve must be in tank failure and environmental contamina- connected to the primary tank for additional pro- tion. tection. The relief valve should be sized and set to prevent the tank from being pressurized in ex- A3. PREINSTALLATION TESTING cess of the maximum allowed test pressure. VI I II ♦ Maintain test pressure and continue inspection for at - least 30 minutes. ♦ At the same time, cover tank outer surface with soap Do not pressurize tanks over 5 psi (3 PSI FOR 12' solution (see Visual Air/Soap Test). DIAMETER TANKS). Tank damage or physical Injury DO can result. ♦ Use a maximum 15 psi air gauge with 1/4 or 1/2 ♦ Make sure you understand these instructions. If in Ib. increments. doubt,call Tank Technical Support. II 11 VIS AL AIR/SOAP TEST -TO BE PERFORMED ON j • ALL TANKS PRIOR TO INSTALLATION. ♦ DO NOT approach endcaps or manways while Warm weather soap solution - 5 gallons of water tanks are under pressure.This could result In with 8 ounces of household dishwashing detergent. personal Injury. ❑ Freezing conditions soap solution-substitute 1 gal- ♦ DO NOT lift or hoist a tank under pressure.This Ion of automotive windshield washer solution for 1 could result In personal injury. gallon of water. DO NOT ❑ Cover entire tank outer surface with soap solution. ♦ Use a vacuum gauge In lieu of a pressure gauge. (Exception -double-wall tanks with liquid filled an- nular space.) TESTING DOUBLE-WALL TANKS WITH DRY ❑ Cover all fittings with soap solution. ANNULAR SPACE Ll Carefully inspect for leaks as indicated by bubbles. This section is for tanks which do not have monitoring tracer fluid installed. If tank arrives at site with monitoring fluid ❑ Roll tank to inspect bottom. Ensure fittings and/or installed, use instructions for Double-Wall Tanks with collars do not contact ground. Annular Space Filled on page 7. CONTINUED ON PAGE 6 5