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it Appgn�cl ix C 19 nn'' �� ((�� HOW TO LOCATE THE POSITION OF THE 71 SO FOR COMPLETE SHUT -OFF AT A GIVEN TAAWOA}�AI#n " LNVIRONf� iCNTAL HEALTH This Appendix only applies when AHJ require- EXAMPLE DE. PAwrNIL' N "IF ments call for complete shut-off at a given tank capacity. 1 . For an Owens-Corning Model G-3 Fiberglass` Tank See page 4 for standard measurements . Calibration Chart: The length of the upper tube and the placement of the Tank Capacity " 10,000 gal ., nominal 9,403 gal . 71 SO valve body determine the shut-off point. The sam- NOTE : Use actual capacity only ple calculation below will provide for complete shut-off - at 95 %. In all cases, the upper tube length must be a Tape measure r, minimum of 6-1 /2" plus the length of the riser pipe . All length measurements are in inches . INSTRUCTIONS o =yx X; r ; 1 . Find the tank capacity ( in gallons) from the tank cali- bration chart provided by the tank manufacturer. Riser Pipe with Face T 2 . Calculate 95 % of capacity. d o 1j , W. ,It Seal Adaptor To Tank i 3 . Locate the 95% volume number on the tank calibra - Top It o i ToTank tion chart. � 'r � V W/� te �` Bottom 4. Find the dipstick number (X) which corresponds to the 95 % tank volume. And, find the dipstick number (Y) which corresponds to the 100% volume. �s ` "- 5 . Subtract the dipstick number (X) from the tank diam - eter (Y) to find the upper tube reference number (Z) . {Y) - (X) — (Z) �_ - �', 2 . 95% of actual tank capacity = 0.95 x 9403 gal . _ 8933 gal , 6 . Add 1 .s " to (Z) to find the upper tube depth E. (Z) + 1 .5 " = E �'` } � /®. Vii',®;` ; 3 . The closest number which is less than 8933 gal . Is 8910 gal . Choosing the closest number less than 7 . Is E less than 6- 1I2"? ON10 95% of actual capacity ensures that complete NO Upper tube length is E plus the distance from the shutoff will occur when the tank is no more than top of the Face Seal Adaptor installed on the riser 95% full . . pipe to the inside, top lip of the storage tank (A) . Upper Tube Length = E + (A) 4. The calibration chart reading of 8910 gal . corre- s .a d sponds to a dipstick measurement of 82 For testable models only, ending in "T": 5 . Dipstick number (X) = 82" Upper Tube Length = E + (A) - 1 - 1 /2" Tank diameter (Y) = 92" (Y) - (X) _ (Z) (92 "- 82" = 10") (Z) = 10" YES Upper tube length is & 1 /2" plus the riser pipe 6 . (Z) + 1 .5 " = E ( 10" + 1 .5 " = 11 .5 ") measurement (A) . E = 11 .5" Upper Tube Length = 6,,& 1 /2" + (A) 7 . Is 11 .5 " less than 6-1 /2"? For testable models only, ending, in "T" : NO Measure the distance from the top of the FSA-400 Upper Tube Length = 6 - i /2" + (A) - 1 - 1 /2` Face Seal Adaptor installed on the riser pipe to the inside, top lip of the storage tank and obtain measurement (A) . NOTE: You must find the actual tank capacity num - Upper tube length = E + (A) ber that correlates to the 61 /2" + (A) depth for the station records . This number may also be used or For testable models only, ending in "T" : the purposes of calibrating an electronic tank level Upper Tube Length = E + (A) — 1 - i /2" system . 23