►CSLD – 持续静态测漏,通过大量短时测漏的结果,统计分析,判断油罐是否泄漏。
►所需条件:
►►MagPlus1 or Mag1 探棒
►►控制台带有CSLD 模块
►►最短28分钟的静止时间,液位仪自动检测液面静止。
►功能:
►►在油罐静止期内自动工作,允许持续运行-无需人为设定测试时间;
►►满足EPA要求;
►►测试报告每24小时自动提供;
►►动态测漏算法自动筛选所有有效数据,并只使用最优质的数据进行测漏,从而减少误报率;
►PASSED -- 体积变化小于指定测试类型的限值
►PERIODIC TEST FAILED - -所有测试条件符合的条件下,体积变化大于指定测试类型的限值
►INVALID -- 一个或多个测试条件不满足要求
►NO CSLD IDLE TIME -- 过去24小时没有足够的静止时间进行CSLD检测。建议静止一个小时。
►CSLD RATE INCR WARM – 油罐内液面上升
►NO RESULT AVAILABLE -- 没有足够数据生成报告。在新开始CSLD是,需等待7~10天
|
问题 |
原因 |
措施 |
|
RECENT DELIVERY |
A delivery occurred during the leak detect test or less than 8 hours before beginning the leak detect test. |
Retest, waiting longer than 8 hours after last delivery |
|
LOW LEVEL TEST ERROR |
Fuel level is too low during a tank test. |
Call for delivery. |
|
FIRST LEAK PERIOD ERROR |
System was unable to obtain enough valid samples (150) to start a leak test during the first leak period (first half hour). |
Call for service following the procedures established for your site. |
|
LAST LEAK PERIOD ERROR |
System was unable to obtain enough valid samples (150) to start a leak test during the last leak period (last half hour). |
Call for service following the procedures established for your site. |
|
TEMPERATURE OUT OF RANGE |
Temperature reading is below 0°F (-17.8°C) or above 100° F (37.8°C). |
Wait for temperature to reenter the probe’s operating range. |
|
TEMP CHANGE TOO LARGE |
Average temperature of all submerged thermistors changed by more than 0.1°F (0.06°C) per hour. |
Retest. |
|
问题 |
原因 |
措施 |
|
CHANGE IN TANK TEMP ZONE |
(Mag Probes only) A submerged thermistor’s temperature changed by more than 0.3°F (0.16°C) per hour. |
Retest. If the problem continues, call for service following the procedures established for your site. |
|
CHANGE IN HEAD TEMP |
(Mag Probes only)The temperature of the thermistor in the probe head changed by more than 1°F(0.6°C) per hour. |
Retest. If the problem continues, call for service following the procedures established for your site. |
|
LEAK TEST TOO SHORT |
A periodic test requires at least 2 hours to complete (3 hours for an annual test) |
Retest. For manual test runs, allow minimum test times. For programmed test runs, program a longer test time. |
|
PERCENT VOLUME TOO LOW |
(Mag1 Probes only) Fuel level is less than the programmed minimum. |
Call for delivery. |
|
LOW LEVEL TEST ERROR |
(Mag Probes only) Fuel level is too low, causing the fuel and water floats to be too close together. |
Call for delivery. |
|
PRODUCT LEVEL INCREASE |
Fuel level increased more than the leak rate threshold value during the test. |
Call for service following the procedures established for your site. |


