中子料位計的使用維護介(jie)紹

中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)料(liao)位(wei)計(ji)(ji)(ji)的中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)源(yuan)(yuan)是放射性物質，針(zhen)狀(zhuang)焦(jiao)料(liao)位(wei)計(ji)(ji)(ji)生(sheng)產廠(chang)商，雖然其(qi)輻射能量級(ji)為三級(ji)，但(dan)長時間近距離操作(zuo)會(hui)對人(ren)體產生(sheng)致(zhi)命傷(shang)害，因(yin)此(ci)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)料(liao)位(wei)計(ji)(ji)(ji)一旦放入中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)源(yuan)(yuan)投入使用(yong)(yong)，針(zhen)狀(zhuang)焦(jiao)料(liao)位(wei)計(ji)(ji)(ji)原理(li)，嚴禁(jin)沒有防(fang)護(hu)措施(shi)的非人(ren)士靠(kao)近。中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)料(liao)位(wei)計(ji)(ji)(ji)因(yin)為高溫影響產生(sheng)電路板損壞也要讓(rang)從事維(wei)(wei)護(hu)的廠(chang)家技術人(ren)員(yuan)來處理(li)，先把中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)源(yuan)(yuan)快速的取出(chu)放入鉛罐(guan)中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)，在對中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)料(liao)位(wei)計(ji)(ji)(ji)進(jin)行維(wei)(wei)修(xiu)，針(zhen)狀(zhuang)焦(jiao)料(liao)位(wei)計(ji)(ji)(ji)價格(ge)，因(yin)此(ci)可(ke)以(yi)說現(xian)場(chang)的中(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)(zi)料(liao)位(wei)計(ji)(ji)(ji)使用(yong)(yong)人(ren)員(yuan)無需進(jin)行維(wei)(wei)護(hu)維(wei)(wei)修(xiu)作(zuo)業。

中子料位計(ji)使用的規章制度概述

現場安裝(zhuang)(zhuang)的輻(fu)射(she)儀表在(zai)(zai)規(gui)定的范圍內(nei)設(she)立輻(fu)射(she)防(fang)護欄(lan)并懸(xuan)掛輻(fu)射(she)標(biao)志，禁止無(wu)輻(fu)射(she)防(fang)護措施的人(ren)員(yuan)進入危(wei)(wei)險區(qu)域(yu)。基于輻(fu)射(she)儀表的危(wei)(wei)害考(kao)慮焦(jiao)炭塔現場安裝(zhuang)(zhuang)的防(fang)爆(bao)電(dian)梯，在(zai)(zai)輻(fu)射(she)儀表安裝(zhuang)(zhuang)的樓層都不設(she)置停靠點，防(fang)止人(ren)員(yuan)誤入輻(fu)射(she)危(wei)(wei)險區(qu)域(yu)，造成人(ren)員(yuan)輻(fu)射(she)傷害。

由于(yu)中子源(yuan)是輻(fu)射物質，其半衰(shuai)期(qi)在幾十年以上，因此廢棄(qi)的(de)(de)(de)中子源(yuan)及臨時性不用(yong)的(de)(de)(de)中子源(yuan)的(de)(de)(de)儲(chu)存是一(yi)個(ge)難點。短時不用(yong)的(de)(de)(de)中子源(yuan)必(bi)(bi)須取(qu)出封存在中子源(yuan)鉛罐內，設置(zhi)專門的(de)(de)(de)存儲(chu)房(fang)屋設立(li)安全防(fang)護距離并懸掛輻(fu)射標志。臨時性不用(yong)超過三個(ge)月的(de)(de)(de)中子源(yuan)與(yu)廢棄(qi)的(de)(de)(de)中子源(yuan)一(yi)樣必(bi)(bi)須儲(chu)存在鉛罐中交于(yu)廢棄(qi)輻(fu)射物質處理(li)公司來處理(li)。現在普遍的(de)(de)(de)辦法(fa)是使用(yong)方與(yu)輻(fu)射儀表提供(gong)廠家(jia)簽訂回(hui)收合(he)同，委托廠家(jia)進行回(hui)收處理(li)，針狀焦料位計，任何輻(fu)射源(yuan)的(de)(de)(de)變動都必(bi)(bi)須向相關部門辦理(li)輻(fu)射儀表變更、注銷(xiao)手續。

中子料位計

根據(ju)中(zhong)(zhong)(zhong)子(zi)的特性，人(ren)類發明了中(zhong)(zhong)(zhong)子(zi)料位計(ji)，應用(yong)于(yu)物(wu)(wu)質含氫量較多(duo)或變化明顯的物(wu)(wu)位檢(jian)測(ce)中(zhong)(zhong)(zhong)。工作機理(li)是(shi)通(tong)過(guo)(guo)一(yi)個快(kuai)中(zhong)(zhong)(zhong)子(zi)發生器(qi)，產(chan)(chan)生大量的快(kuai)中(zhong)(zhong)(zhong)子(zi)，穿過(guo)(guo)生產(chan)(chan)設(she)備的金屬厚壁(bi)(bi)，進(jin)入(ru)生產(chan)(chan)裝置中(zhong)(zhong)(zhong)，遇到含氫質子(zi)較多(duo)的物(wu)(wu)質，快(kuai)中(zhong)(zhong)(zhong)子(zi)在(zai)碰撞(zhuang)中(zhong)(zhong)(zhong)變成慢(man)(man)中(zhong)(zhong)(zhong)子(zi)，一(yi)部分反向(xiang)穿過(guo)(guo)器(qi)壁(bi)(bi)被慢(man)(man)中(zhong)(zhong)(zhong)子(zi)捕獲器(qi)（其物(wu)(wu)質的原子(zi)核與(yu)慢(man)(man)中(zhong)(zhong)(zhong)子(zi)發生作用(yong)）所(suo)吸(xi)收(shou)。

根據(ju)慢中子(zi)捕獲器(qi)所捕獲的慢中子(zi)數量，可(ke)以得出被測介質(zhi)含氫量的多少，以此分(fen)析(xi)出被測物質(zhi)。