COMPLIANCE INFO_2019 - Laserfiche WebLink

Home Browse Search

Appendix C HOW TO LOCATE THE POSITION OF THE 71 SO FOR COMPLETE SHUT- OFF AT A GIVEN TANK CAPACITY Note: This Appendix only applies when AHJ require - EXAMPLE 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 rnea5we minimum of 6- 1 /2 " plus the length of the riser pipe . All length measurements are in inches . r INSTRUCTIONS ` 1 . Find the tank capacity ( in gallons) from the tank tali- bration chart provided by the tank manufacturer. Riser Pipe with Face 2 . Calculate 95 % of capacity. seal Adaptor (A) To Tank B 3 . Locate the 95 % volume number on the tank calibra- Tap ( I D S To Tank tion chart. Bottom 4. Find the dipstick number (X) which corresponds to t the 95 % tank volume. And, find the dipstick number (Y) which corresponds to the 100% volume. 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 . _ 6. Add 1 .5 " to (Z) to find the upper tube depth E . 8933 gal . (Z) + 1 .5 " = E 3 . The closest number which is less than 8933 gal . Is 7 . Is E less than 6- 1 /2"7 8910 gal . Choosing the closest numberless than NO Upper tube length is E plus the distance from the 95% of actual capacity ensures that complete 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- 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 " = 1011) YES Upper tube length is 6- 1 /2 " plus the riser pipe (Z) = 10" measurement (A) . 6. (Z) + 1 .S" = E ( T 0" + 1 .5" Upper Tube Length = 6- 1 /2" + (A) E11 .5 " 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 = 61 /2" + ( A) - 1 -112 " 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 6-1 /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 - 1 /2" system . 23