11-1
11 CSLD Troubleshooting
CSLD collects information during each idle time to form a highly accurate leak detection database. Since the
database is being constantly updated, leak test results are always current. Periodic leak tests are performed using
the best data from up to the previous 28 days, and test results are continuously updated as new data is gathered.
Invalid data is discarded and only the best data is used to ensure accurate leak test results and fewer false alarms.
Test results are provided automatically every 24 hours at 8:00 a.m.
CSLD Tank Limitations
All applications of CSLD should conform to the following installation guidelines.
MAXIMUM TANK CAPACITY
Single tank - 30,000 gallons
Manifolded tanks - 30,000 gallons per manifolded set (3 tanks maximum per set).
MONTHLY THROUGHPUT GUIDELINES
*Total capacity of manifolded tanks establishes the throughput restrictions for that product.
Installations exceeding these limitations may not pass monthly tests.
CSLD Block Diagrams
Figure 11-1 illustrates the CSLD decision process in block diagram form and Figure 11-2 diagrams the timing of
events during a CSLD test.
Table 11-1. Tank Capacity / Monthly Throughput Limitations*
Product
Tank Capacity
<10,000
12,000
15,000
20,000
30,000
Gasoline 200,000
200,000
200,000
150,000
100,000
Diesel 200,000
200,000
200,000
200,000
200,000
