Issue Date: November 22, 1995
Revision Date: February 22, 2017

Horner Products, Inc.

SIR PRO 1 Versions 1.0, 2.0

Statistical Inventory Reconciliation Test Method (Qualitative)

Certification Leak rate of 0.2 gph with PD = 100% and PFA = 0% for Version 1.0.
Leak rate of 0.1 gph with PD = 100% and PFA = 0% for Version 2.0.
Leak Threshold If the absolute value of the calculated leak rate (gain or loss) is less than the leak threshold and the minimum detectable leak rate is less than or equal to 0.2 gph (0.1 gph for the 0.1 gph test), the test result is "pass." If the absolute value of the calculated leak rate is greater than or equal to the leak threshold, the result is "fail." If the minimum detectable leak rate exceeds 0.2 gph (0.1 gph for the 0.1 gph test) and the absolute value of the calculated leak rate is less than the leak threshold, the test result is "inconclusive."
Applicability Gasoline, diesel.
Other more viscous liquids may be tested after consultation with the vendor.
Tank Capacity Maximum of 18,000 gallons.
Data Requirement Minimum of 30 days of product level and flow through data.
System Features Method of data analysis that system employs, and was used during evaluation process, is exclusive of any external control by vendor.
System consists of a fully automated software package with embedded algorithms for conducting leak detection testing. Consequently, third party evaluation procedure demonstrated that system can be used in-house with no requirement for direct vendor participation.
Evaluation Features Evaluator tested this system for in-house use. Computer program disk along with instructional documentation was supplied by vendor to evaluator. Evaluator, without vendor involvement, analyzed required data and performed evaluation using program disk and accompanying documentation. Vendor was present as an observer during evaluation.
Comments

Not evaluated using data from manifolded tanks.
Of 120 data sets submitted for evaluation, 10 were inconclusive for Version 1.
Of 120 data sets submitted for evaluation, 9 were inconclusive for Version 2.
Median monthly throughput of tanks evaluated was 13,640 gallons for Version 1.
Median monthly throughput of tanks evaluated was 11,828 gallons for Version 2.
Leak rate of 0.2 gph was used in evaluation for Version 1.
Leak rate of 0.1 gph was used in evaluation for Version 2.
Data sets evaluated were supplied by evaluator.

This method does not meet the Federal UST requirement for Statistical Inventory Reconciliation to report a quantitative result with a calculated leak rate. (40 Code of Federal Regulations, part 280.43(h)(1).)
  • Horner Products, Inc.
    104 Little Killarney Beach
    Bay City, MI 48706
    Tel: (800) 443-0711
  • Evaluator: Petro Works
    Tel: (913) 681-9379
    Date of Evaluation: 04/07/93

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