MVME177-015工控自動(dòng)化卡件
2015年11月第14頁(yè)，共35頁(yè)598.6（c）（c）地下和地面管道泄漏檢測(cè)。（1） 從1995年8月11日開始，業(yè)主和運(yùn)營(yíng)商必須檢查地下和地面管道是否泄漏。所使用的方法必須設(shè)計(jì)用于檢測(cè)常規(guī)含有危險(xiǎn)物質(zhì)的管道的任何部分的泄漏，并且可以包括本節(jié)第（b）小節(jié)規(guī)定的適用于儲(chǔ)罐的任何方法，但本節(jié)（b）（5）段除外。注意本小節(jié)第（3）段中吸入管道的例外情況。（2） 如果地下管道被加壓，則還必須安裝一個(gè)自動(dòng)管線泄漏檢測(cè)器，該檢測(cè)器可提醒業(yè)主或操作員存在泄漏。探測(cè)器必須能夠限制或關(guān)閉流量或觸發(fā)警報(bào)。管道泄漏檢測(cè)器還必須能夠在1小時(shí)內(nèi)以每平方英寸10磅的管道壓力檢測(cè)每小時(shí)3加侖的泄漏，檢測(cè)概率為95%，誤報(bào)概率為5%或更低。必須使用制造商制定的程序?qū)z漏儀的操作進(jìn)行年度測(cè)試。（3） 對(duì)于滿足以下所有條件的吸入管道，無(wú)需進(jìn)行泄漏檢測(cè)：（i）在低于大氣壓力的條件下運(yùn)行；（ii）是傾斜的，以便當(dāng)抽吸被釋放時(shí)，管道的內(nèi)容物會(huì)排回水箱
每條管線中只有一個(gè)止回閥；以及（iv）止回閥直接位于抽吸泵的下方并且盡可能靠近抽吸泵。（d） 檢查內(nèi)襯罐。在內(nèi)襯固定到地下儲(chǔ)罐后的10年內(nèi)，必須對(duì)儲(chǔ)罐進(jìn)行內(nèi)部檢查，發(fā)現(xiàn)其結(jié)構(gòu)完好，內(nèi)襯仍按照原始設(shè)計(jì)規(guī)范運(yùn)行。此后每五年必須進(jìn)行一次復(fù)檢。（e） 氣密性試驗(yàn)標(biāo)準(zhǔn)。（1） 密封性測(cè)試是部門可接受的測(cè)試，用于確定儲(chǔ)罐和管道系統(tǒng)是否密封。這應(yīng)包括：（i）能夠檢測(cè)每小時(shí)十分之一加侖（gph）的儲(chǔ)罐或管道泄漏的試驗(yàn)，檢測(cè)概率為95%，誤報(bào)概率為5%或更低，最大閾值為一小時(shí)內(nèi)泄漏百分之五加侖，考慮到蒸汽袋、產(chǎn)品熱膨脹和收縮等變量，溫度分層、地下水位、蒸發(fā)、壓力和儲(chǔ)罐變形；或6 NYCRR第598部分–2015年10月11日第15頁(yè)，共35頁(yè)598.6（e）（ii）根據(jù)本部分第598.7（d）節(jié)的要求進(jìn)行的結(jié)構(gòu)檢查。（2） 如果在技術(shù)上不可能進(jìn)行有意義的氣密性試驗(yàn)，則必須進(jìn)行部門可接受的替代試驗(yàn)或檢查。
November 2015 Page 14 of 35 598.6 (c) (c) Underground and surface pipeline leak detection. (1) From August 11, 1995, owners and operators must check whether underground and surface pipelines are leaking. The method used must be designed to detect leaks in any part of a pipeline that routinely contains hazardous substances, and may include any method applicable to tanks as specified in subsection (b) of this section, except paragraph (b) (5) of this section. Note the exception to suction piping in paragraph (3) of this subsection. (2) If the underground pipeline is pressurized, an automatic pipeline leakage detector must also be installed, which can alert the owner or operator of the leakage. The detector must be able to limit or turn off the flow or trigger an alarm. The pipe leak detector must also be capable of detecting a leak of 3 gallons per hour at 10 pounds per square inch of pipe pressure in 1 hour with a 95% probability of detection and a 5% probability of false positives or less. The operation of the leak detector must be tested annually using the procedures established by the manufacturer. (3) No leak detection is required for suction piping that meets all of the following conditions: (i) operates below atmospheric pressure; (ii) be sloped so that when suction is released, the contents of the pipe will drain back to the tank
There is only one check valve in each pipeline; And (iv) a check valve directly below and as close to the suction pump as possible. (d) Check the liner tank. Within 10 years after the liner is fixed to the underground tank, the tank must be inspected internally, and found to be in good condition, and the liner still operates according to the original design specifications. Thereafter, re inspection must be carried out every five years. (e) Air tightness test standard. (1) Sealing test is a test acceptable to the department to determine whether the tank and piping system are sealed. This shall include:; Or 6 NYCRR Part 598 – October 11, 2015 Page 15 of 35 598.6 (e) (ii) Structural inspection in accordance with section 598.7 (d) of this part. (2) If it is technically impossible to carry out meaningful air tightness tests, alternative tests or inspections acceptable to the department must be carried out.
