The system includes a robust steel storage tank designed and constructed in accordance with UL standards and certifications.
An industrial high-temperature, two-part catalyzed interior coating is applied over a grit blast for maximum interior surface protection. Additionally, a high-temperature-resistive exterior coating, coupled with a pre-engineered cathodic protection system, creates a dependable dielectric barrier between the tank and the underground environment. Locations Manheim, PA Privacy Policy Terms of Use. Additional Product Info. Grease Interceptors.
The steel thickness of the tank may be reduced if the earth load test, water load test and external pressure test are conducted on a sample tank. These tests are noted below under UL tests. Samples of the composite tank-cladding system are subjected to the air-oven conditioning and to environ-mental fluids immersion for 30, 90 and days.
Additional samples shall be subjected to the light and water exposure test and the impact and cold exposure test noted below under UL The coating shall also be evaluated with respect to corrosion protection when exposed to fluids representing group oil conditions. There shall be no evidence of blistering, softening, crazing or other damage that could impair the performance of the cladding after day exposure to the test fluids at 38 degrees C.
The composite tank assembly shall be subjected to the following tests: Strength of pipe fittings tests, including tests for torque and bending moment; and strength of lift fittings test noted below under UL ; and the external pressure test noted above under UL In addition, the tank assembly shall be subjected to the leakage test, tank impact test and holiday test.
The tank shall be subjected to a 5 psi aerostatic leakage test and checked for leakage using a leak detection solu-tion. The tank impact test consists of impacting the tank with a 12 pound steel ball. The complete tank assembly is subjected to a holiday test using a 35, volt holiday tester.
There shall be no evidence of holi-days after the above tests. Courtesy of Fluid Containment. These tanks consist of a steel tank complying with UL 58 with a nonmetallic external FRP or thermoplastic jacket. The tank and jacket are separated by an interstitial space with the jacket acting as a secondary containment barrier.
The jacket shall be fabricated using a material at least 0. The tank as sembl y shall be subj ected to the strength of pipe fitting test; the bending moment, and strength of lift fittings test; the tank impact test; the leakage test; the holiday test; and the annulus proof pressure tests noted below. In addition, a jacketed tank shall also be subjected to an interstitial communication test.
During the com-munication test, a sample is installed underground and filled to capacity with water. At the farther point from the interstitial monitoring point, water, and vacuum-created pressure shall be added to the inter-stitial space. There shall be measurable communica-tion to the monitoring point within 24 hours. If a jacketed tank is constructed with reduced steel thickness, the water load test, the earth load test and the external pressure test noted below shall be con-ducted on a sample tank assembly.
As part of normal production, each tank shall be subjected to the leak-age test. Each cathodically protected tank is subjected to the anode continuity test to verify that there is con-tinuity between the anode lead wire and the tank con-nection. Each composi te tank and areas of FRP jacketed tanks where the FRP is bonded to the steel tank shall be subjected to the holiday test. It addresses safety issues regarding protection from leakage; buckling due to external pressure; the ability of the tank to withstand internal pressures that may develop in the tank during testing; and the compatibility of the materials with the intended fluids and ground soil conditions.
The Standard requirements include the location of openings and minimum vent size. The test program includes the following:. The fitting shall not crack or split, and the threads shall not strip. The fitting and the tank shall not be damaged. Strength-of-lifting fittings test— A lift fitting shall be sub-jected to a load equal to twice the weight of the empty tank.
Neither the fitting nor the tank shall be damaged. The tank is subjected to the leakage test after this test is conducted. Water-load test— The tank shall be placed in a sand bed so that one-eighth of the tank is buried and then filled with water.
The tank shall not be damaged. The pit is then filled with water so that the tank is submerged to its max-imum burial depth. The tank is to remain submerged for 24 hours. Then, while still submerged, the tank is subjected to an internal vacuum. The tank shall not be damaged or implode. Internal pressure test— A tank shall withstand without rup-ture an internal pressure test for one minute. The height of a dished bulkhead shall not be lags than that specified in Table 9.
When two or more pieces are used. Flonge 0. Y - Bracing [locate 6 inches mm below center of head]. So Figure Examples af Standofis are 3x 1. The channel placement shall nat regultin the chanel straddling a shell ar head weld jeint for a length greater than the width of the channel, The requirements in this section cover optional tank accessories, components, and special constructions.
Inlet and outlet connections of a heating coil or 4 hot wall shall be located above the highest intended liquid level. A continuous weld shall be made whate 4 connection pierces the shell of the tank or a manhole caver. The tank selection shall represent the worst ase forthe range al tank sizes under evaluation, The suppor structure for the test tank shall not add adsitional tensile or compressive stresses to the bottom of the lest tank.
The tank is to remain submorgod for 1 hour 12 tiscive Septemibor20, 19 Lift Lugs The tes! A continuous crop in pressure is considered evidence of leakage.
Defects in welds shall be repaired by chipping or melting out from one ar both sides of the joint, as required, and rewelding. Each tank shail be legibly and parmenently marked with: a The natne of the manufacturer of a distinctive matking, or code, by which itis dentiied as the product of a particular manufacturer. Exception Ne. The label or nameplate shall be parmanantly secured to the outer surface of the coating, jacket or composite system, 2.
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