Issue Date: April 18, 1997
Revision Date: July 14, 2003

Simmons Corp.

SIR 5.7 LM

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification Leak rate of 0.2 gph with PD > 99.9% and PFA = 0.0%. 
Leak rate of 0.1 gph with PD > 99.0% and PFA < 1.0%.
Leak Threshold 0.1 gph for leak rate of 0.2 gph. 
0.05 gph for leak rate of 0.1 gph. 
A tank system should not be declared tight if the test result indicates a loss or gain that equals or exceeds this threshold.
Gains (water ingress) are analyzed and evaluated on an individual basis.
Applicability Gasoline, diesel. 
Tank Capacity Maximum of 60,000 gallons for single tank. 
Maximum of 60,000 gallons cumulative capacity for manifolded tank systems with no more than 5 tanks in system.
Data Requirement Minimum of 27 days of product level and flow through data.
Comments 61% of data sets evaluated were from manifolded tank systems. 
17% of data sets evaluated used data collected by Automatic tank gauges. 
Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. 
Median monthly throughput of tanks evaluated was 55,791 gallons. 
Leak rates of 0.05, 0.1 and 0.2 gph were used in evaluation. 
Data sets evaluated were supplied by evaluator.

 

Simmons Corp.

Evaluator:  S.S.G. Associates

106 E. Main Street

Tel:  (662) 234-1179

Richardson, TX 75081-3327

Dates of Evaluation:  10/28/95, 02/15/00, 09/03/01

Tel:  (800) 848-8378

 

E-mail: howard.dockery@simmons-corp.com  
URL: www.simmons-corp.com  
 

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