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行業動態 行業動態

實驗室必須注意避免的五個關鍵問題!

2023-05-23 作者: 瀏(liu)覽數:968

PART 01
超范圍蓋章

按照《計量(liang)(liang)(liang)法》規定(ding),對社會出具具有證明作(zuo)(zuo)用(yong)的(de)數(shu)據實(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)室(shi)(shi)(shi)必須經(jing)過實(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)室(shi)(shi)(shi)資質(zhi)(zhi)認定(ding)(計量(liang)(liang)(liang)認證)和/或CNAS認可,而資質(zhi)(zhi)認定(ding)和/或CNAS認可是限(xian)(xian)定(ding)實(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)室(shi)(shi)(shi)能(neng)(neng)力(li)范圍(wei)的(de),實(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)室(shi)(shi)(shi)只能(neng)(neng)在(zai)能(neng)(neng)力(li)范圍(wei)限(xian)(xian)定(ding)的(de)產品(pin)(參數(shu))范圍(wei)內出具帶相應(ying)標識(shi)的(de)檢(jian)驗(yan)(yan)(yan)(yan)(yan)報(bao)告,檢(jian)驗(yan)(yan)(yan)(yan)(yan)使用(yong)的(de)標準不在(zai)能(neng)(neng)力(li)范圍(wei)者,我(wo)們稱之(zhi)為(wei)超(chao)(chao)范圍(wei)檢(jian)驗(yan)(yan)(yan)(yan)(yan)。國家(jia)質(zhi)(zhi)檢(jian)總局發布執行的(de)《產品(pin)質(zhi)(zhi)量(liang)(liang)(liang)監督抽查管(guan)理(li)辦(ban)法》、《產品(pin)質(zhi)(zhi)量(liang)(liang)(liang)檢(jian)驗(yan)(yan)(yan)(yan)(yan)機構工作(zuo)(zuo)質(zhi)(zhi)量(liang)(liang)(liang)分類監管(guan)辦(ban)法》以(yi)及(ji)其他規定(ding)中(zhong)(zhong)也(ye)都明確規定(ding)實(shi)(shi)驗(yan)(yan)(yan)(yan)(yan)室(shi)(shi)(shi)不得(de)超(chao)(chao)能(neng)(neng)力(li)范圍(wei)開展檢(jian)測工作(zuo)(zuo),但在(zai)實(shi)(shi)際工作(zuo)(zuo)過程中(zhong)(zhong),個(ge)別檢(jian)驗(yan)(yan)(yan)(yan)(yan)機構超(chao)(chao)能(neng)(neng)力(li)范圍(wei)檢(jian)測情況(kuang)時有發生。超(chao)(chao)范圍(wei)檢(jian)驗(yan)(yan)(yan)(yan)(yan)主要有三種(zhong)形(xing)式:

NO.1

故(gu)意超能力范(fan)圍檢驗

實驗(yan)(yan)(yan)室(shi)(shi)或實驗(yan)(yan)(yan)室(shi)(shi)中個(ge)別(bie)人員(yuan)為(wei)滿足(zu)客戶要求,為(wei)實驗(yan)(yan)(yan)室(shi)(shi)爭(zheng)取經(jing)濟利益,對不在能力范圍內(nei)的(de)產(chan)(chan)品(pin)(pin)開展檢(jian)驗(yan)(yan)(yan)工作,出具帶(dai)標(biao)(biao)識的(de)檢(jian)驗(yan)(yan)(yan)報告(gao);或實驗(yan)(yan)(yan)室(shi)(shi)人員(yuan)以(yi)為(wei)采用標(biao)(biao)準中的(de)個(ge)別(bie)標(biao)(biao)準在能力范圍內(nei),誤(wu)將產(chan)(chan)品(pin)(pin)進行(xing)檢(jian)驗(yan)(yan)(yan)并出具帶(dai)標(biao)(biao)識的(de)檢(jian)驗(yan)(yan)(yan)報告(gao)。

近(jin)年來,質檢(jian)總局、認監(jian)委、省(sheng)市質監(jian)局對超能(neng)力(li)(li)范圍(wei)檢(jian)測的(de)處罰都非常嚴厲,甚至停(ting)止個別(bie)實(shi)(shi)(shi)驗室的(de)檢(jian)測活動。因(yin)此,實(shi)(shi)(shi)驗室應(ying)將超能(neng)力(li)(li)范圍(wei)檢(jian)測的(de)后果向每(mei)一位員工宣傳(chuan),不能(neng)為(wei)經濟利益或所(suo)謂(wei)的(de)為(wei)企(qi)業著想(xiang)而故意(yi)超能(neng)力(li)(li)范圍(wei)檢(jian)測;同時實(shi)(shi)(shi)驗室還應(ying)認真(zhen)梳理實(shi)(shi)(shi)驗室的(de)能(neng)力(li)(li)范圍(wei),對確實(shi)(shi)(shi)有設備、具備檢(jian)驗能(neng)力(li)(li)而不在(zai)能(neng)力(li)(li)范圍(wei)內的(de)標準,應(ying)盡快進行擴(kuo)項,提高為(wei)企(qi)業服務(wu)的(de)能(neng)力(li)(li)。

NO.2

標準變更(geng)后未(wei)及時進行能力(li)確認

近(jin)年(nian)來,不管是(shi)(shi)產(chan)品(pin)標(biao)準(zhun)(zhun)還是(shi)(shi)方法(fa)標(biao)準(zhun)(zhun),標(biao)準(zhun)(zhun)的(de)(de)(de)變更(geng)非(fei)常(chang)頻繁。按照實(shi)驗(yan)室資(zi)質(zhi)認(ren)定評審(shen)準(zhun)(zhun)則(ze)的(de)(de)(de)規定,實(shi)驗(yan)室使用(yong)的(de)(de)(de)文件(jian)必須(xu)是(shi)(shi)現(xian)行有效的(de)(de)(de),因(yin)此(ci),實(shi)驗(yan)室不能使用(yong)作(zuo)廢標(biao)準(zhun)(zhun)開(kai)(kai)展檢(jian)測工作(zuo)。實(shi)驗(yan)室采用(yong)新(xin)標(biao)準(zhun)(zhun)開(kai)(kai)展工作(zuo),則(ze)必須(xu)及(ji)時到實(shi)驗(yan)室資(zi)質(zhi)認(ren)定和/或CNAS認(ren)可的(de)(de)(de)發證機構進行標(biao)準(zhun)(zhun)變更(geng)。目前,有的(de)(de)(de)實(shi)驗(yan)室怕麻煩,往(wang)往(wang)等(deng)到復評審(shen)或監督(du)評審(shen)時才進行標(biao)準(zhun)(zhun)變更(geng)。在新(xin)標(biao)準(zhun)(zhun)開(kai)(kai)始實(shi)施到通(tong)過(guo)實(shi)驗(yan)室復評審(shen)或監督(du)評審(shen)之(zhi)間如果按新(xin)標(biao)準(zhun)(zhun)開(kai)(kai)展檢(jian)驗(yan)工作(zuo),則(ze)是(shi)(shi)超(chao)范圍檢(jian)驗(yan)。

還(huan)有一種隱(yin)性超(chao)能(neng)(neng)力(li)(li)范(fan)圍的(de)(de)情(qing)形(xing)。實(shi)(shi)(shi)驗(yan)室通過(guo)的(de)(de)檢(jian)(jian)驗(yan)能(neng)(neng)力(li)(li)范(fan)圍時,實(shi)(shi)(shi)際(ji)隱(yin)含的(de)(de)意思是包括產(chan)品標(biao)準(zhun)中引用(yong)標(biao)準(zhun)也通過(guo)實(shi)(shi)(shi)驗(yan)室評(ping)審。當其引用(yong)標(biao)準(zhun)出現標(biao)準(zhun)變(bian)(bian)更尤其是檢(jian)(jian)驗(yan)方法、環境設施(shi)有實(shi)(shi)(shi)際(ji)變(bian)(bian)化(hua)(hua)的(de)(de)情(qing)況下,其產(chan)品檢(jian)(jian)驗(yan)的(de)(de)實(shi)(shi)(shi)際(ji)檢(jian)(jian)驗(yan)能(neng)(neng)力(li)(li)有可(ke)能(neng)(neng)出現變(bian)(bian)化(hua)(hua)。這種變(bian)(bian)化(hua)(hua),可(ke)能(neng)(neng)會導致實(shi)(shi)(shi)驗(yan)室不能(neng)(neng)按現行有效標(biao)準(zhun)正(zheng)常(chang)開展(zhan)檢(jian)(jian)驗(yan)工(gong)作。我們(men)把這種變(bian)(bian)化(hua)(hua)稱之為“隱(yin)性的(de)(de)”超(chao)范(fan)圍檢(jian)(jian)驗(yan)。

由于標(biao)準(zhun)變更(geng)后需要(yao)重新進(jin)行能(neng)力確認,個別實(shi)驗(yan)(yan)室怕麻煩,往(wang)往(wang)會(hui)等到監督評審(shen)或(huo)復評審(shen)時才進(jin)行確認,從而(er)導(dao)致超能(neng)力范圍檢(jian)(jian)驗(yan)(yan)。因(yin)此,實(shi)驗(yan)(yan)室應關(guan)注和避(bi)免(mian)(mian)這種情況的(de)(de)發(fa)生,在能(neng)力未確認前,不得使用(yong)新標(biao)準(zhun)開(kai)展檢(jian)(jian)驗(yan)(yan)。對于產品標(biao)準(zhun)中引(yin)用(yong)標(biao)準(zhun)的(de)(de)變更(geng),實(shi)驗(yan)(yan)室更(geng)應關(guan)注,以免(mian)(mian)采用(yong)作廢標(biao)準(zhun)開(kai)展檢(jian)(jian)驗(yan)(yan)而(er)造成(cheng)檢(jian)(jian)驗(yan)(yan)結(jie)果的(de)(de)誤判(pan)和可能(neng)帶(dai)來的(de)(de)檢(jian)(jian)驗(yan)(yan)風險。

NO.3

亂(luan)用CNAS、CMA、標識

很多實(shi)驗(yan)室(shi)(shi)(shi)通(tong)過(guo)(guo)了CNAS認(ren)可(ke)(ke),也通(tong)過(guo)(guo)了實(shi)驗(yan)室(shi)(shi)(shi)資質認(ren)定,而(er)這兩個認(ren)可(ke)(ke)不(bu)在同一時間進行認(ren)可(ke)(ke),當申請擴項或標準(zhun)變更時,往往是一個通(tong)過(guo)(guo)了,而(er)另一個還要過(guo)(guo)段(duan)時間才認(ren)可(ke)(ke)。有部(bu)分(fen)實(shi)驗(yan)室(shi)(shi)(shi)尤其是部(bu)分(fen)中小實(shi)驗(yan)室(shi)(shi)(shi),取得能(neng)力(li)范(fan)圍以CMA為主(zhu),CNAS的(de)能(neng)力(li)范(fan)圍很小,而(er)檢驗(yan)報告的(de)封(feng)(feng)面一般是將幾個標識(shi)均直(zhi)接印在封(feng)(feng)面上,這使得實(shi)驗(yan)室(shi)(shi)(shi)誤用標識(shi)。因此,實(shi)驗(yan)室(shi)(shi)(shi)應按通(tong)過(guo)(guo)的(de)能(neng)力(li)范(fan)圍分(fen)別印制檢驗(yan)封(feng)(feng)面,按規定使用。


PART 02

設(she)(she)備及環境(jing)設(she)(she)施不能(neng)滿足標準(zhun)要求


設備(bei)及環(huan)境設施(shi)是實(shi)驗室開展(zhan)檢驗的(de)必備(bei)工具,設備(bei)及環(huan)境設施(shi)是否滿足標準,將直(zhi)接影響數據的(de)準確性,對檢驗結果(guo)和判定有重大影響。設備(bei)及環(huan)境設施(shi)不能滿足要(yao)求的(de)原因主要(yao)有:

NO.1

量值溯源未(wei)按規定

儀(yi)(yi)器設備的量(liang)(liang)值溯源是保證其測量(liang)(liang)準(zhun)(zhun)確性的主(zhu)要手段之一,按(an)照實(shi)驗(yan)(yan)室(shi)資(zi)質(zhi)認定(ding)(ding)(ding)評審準(zhun)(zhun)則(ze)要求,儀(yi)(yi)器設備使(shi)用(yong)前應經過檢(jian)(jian)(jian)(jian)定(ding)(ding)(ding)或校準(zhun)(zhun),必要時,在(zai)二次檢(jian)(jian)(jian)(jian)定(ding)(ding)(ding)或校準(zhun)(zhun)之間應進(jin)(jin)行(xing)期間核查,以保證數(shu)據的準(zhun)(zhun)確性。但部分(fen)實(shi)驗(yan)(yan)室(shi)未按(an)規(gui)定(ding)(ding)(ding)將儀(yi)(yi)器送計(ji)(ji)量(liang)(liang)部門進(jin)(jin)行(xing)檢(jian)(jian)(jian)(jian)定(ding)(ding)(ding)或校準(zhun)(zhun),造成(cheng)儀(yi)(yi)器失準(zhun)(zhun),還(huan)有個別檢(jian)(jian)(jian)(jian)定(ding)(ding)(ding)/校準(zhun)(zhun)實(shi)驗(yan)(yan)室(shi)不經檢(jian)(jian)(jian)(jian)定(ding)(ding)(ding)/校準(zhun)(zhun)就出具證書。實(shi)驗(yan)(yan)室(shi)內經常會有儀(yi)(yi)器設備是沒有檢(jian)(jian)(jian)(jian)定(ding)(ding)(ding)規(gui)程(cheng)或校準(zhun)(zhun)方(fang)法,計(ji)(ji)量(liang)(liang)部門往往圖省事,僅對(dui)儀(yi)(yi)器使(shi)用(yong)的計(ji)(ji)量(liang)(liang)器具進(jin)(jin)行(xing)檢(jian)(jian)(jian)(jian)定(ding)(ding)(ding)或校準(zhun)(zhun),而其總體設備是否合格(ge)則(ze)不做綜合判(pan)定(ding)(ding)(ding),使(shi)得(de)設備顯(xian)示(shi)的數(shu)據是否準(zhun)(zhun)確不得(de)而知。如果此時不采用(yong)能力驗(yan)(yan)證或實(shi)驗(yan)(yan)室(shi)比對(dui)的方(fang)法對(dui)儀(yi)(yi)器進(jin)(jin)行(xing)驗(yan)(yan)證,則(ze)會帶來(lai)很大(da)的風險(xian)。

NO.2

設備精度下(xia)降

有的(de)檢(jian)驗機(ji)(ji)構,尤(you)其是中小型(xing)檢(jian)驗機(ji)(ji)構,由于(yu)資金的(de)不(bu)足,使得(de)設備(bei)長(chang)期(qi)(qi)服役,得(de)不(bu)到(dao)及(ji)(ji)時(shi)(shi)更新。由于(yu)設備(bei)使用年(nian)限過長(chang),或(huo)使用環境惡劣,設備(bei)的(de)精(jing)度下降,檢(jian)驗數據的(de)可(ke)信度下降。因此,實(shi)驗室(shi)應(ying)(ying)及(ji)(ji)時(shi)(shi)更新設備(bei),當(dang)設備(bei)一時(shi)(shi)不(bu)能(neng)更新,應(ying)(ying)增加(jia)校準的(de)頻次、做(zuo)期(qi)(qi)間(jian)核查(cha)、采用實(shi)驗室(shi)間(jian)比對或(huo)設備(bei)間(jian)比對等方式(shi)驗證設備(bei)的(de)可(ke)靠性,以保證檢(jian)測(ce)數據準確(que)可(ke)靠。

NO.3

環(huan)境設施不符合標準要求

很(hen)(hen)多(duo)試(shi)驗(yan)對(dui)環境(jing)設施的(de)要(yao)(yao)求(qiu)是(shi)很(hen)(hen)高的(de),對(dui)檢(jian)驗(yan)結(jie)果(guo)的(de)影(ying)響(xiang)很(hen)(hen)大,但部分(fen)檢(jian)驗(yan)機構對(dui)環境(jing)設施不(bu)是(shi)很(hen)(hen)重視,不(bu)能(neng)很(hen)(hen)好(hao)地滿(man)足檢(jian)驗(yan)的(de)要(yao)(yao)求(qiu)。如:水(shui)(shui)泥檢(jian)驗(yan)的(de)水(shui)(shui)養護,水(shui)(shui)的(de)溫度(du)規(gui)定(ding)(ding)為(20±1)℃,超出標(biao)(biao)準規(gui)定(ding)(ding)的(de)溫度(du)范(fan)圍,尤其是(shi)超出溫度(du)較(jiao)多(duo)時,對(dui)檢(jian)驗(yan)結(jie)果(guo)影(ying)響(xiang)就(jiu)會很(hen)(hen)大。而(er)我們在評審中(zhong)發現,部分(fen)水(shui)(shui)泥實(shi)(shi)驗(yan)室中(zhong),水(shui)(shui)養護都是(shi)在水(shui)(shui)池中(zhong)進(jin)行(xing),水(shui)(shui)溫低了(le)加熱水(shui)(shui),水(shui)(shui)溫高了(le)加冷水(shui)(shui),這(zhe)樣(yang)的(de)溫控(kong)方式無(wu)法(fa)保證水(shui)(shui)溫控(kong)制(zhi)精度(du),其養護后的(de)檢(jian)測(ce)數據也是(shi)不(bu)準確的(de)。因此,對(dui)環境(jing)設施要(yao)(yao)求(qiu)高的(de)試(shi)驗(yan),實(shi)(shi)驗(yan)室應確保檢(jian)測(ce)的(de)環境(jing)設施符合(he)標(biao)(biao)準要(yao)(yao)求(qiu)。


PART 03

檢(jian)測過程質量缺乏(fa)有效控制(zhi)


由(you)于檢(jian)測過程不規(gui)范而產生(sheng)的檢(jian)驗結論不正確或數據不準(zhun)確也(ye)時有發生(sheng),主要表現在:

NO.1

檢(jian)驗和計算粗心大意

檢驗(yan)(yan)是一(yi)個需(xu)要專注的過程(cheng),稍(shao)有疏忽,就容(rong)易出(chu)現(xian)差錯。而(er)隨著手(shou)機的普(pu)及,檢驗(yan)(yan)過程(cheng)中,檢驗(yan)(yan)人員在檢驗(yan)(yan)或檢驗(yan)(yan)后的數據計算(suan)過程(cheng)中接聽(ting)手(shou)機的現(xian)象非常(chang)普(pu)遍(bian),如此以及其(qi)他的粗心(xin)造(zao)(zao)成(cheng)檢驗(yan)(yan)失誤(wu)的案例也(ye)時有發生。檢驗(yan)(yan)和計算(suan)過程(cheng)中粗心(xin)大意(yi)造(zao)(zao)成(cheng)的檢驗(yan)(yan)失誤(wu)雖不常(chang)見,但一(yi)旦出(chu)現(xian)這種情況,將直接導致檢驗(yan)(yan)結果出(chu)現(xian)差錯。

NO.2

對可疑數據(ju)不敏感

一(yi)(yi)般(ban)而(er)言,每(mei)一(yi)(yi)種(zhong)物質(zhi)都有(you)其自身特性,其檢測數(shu)據應(ying)在一(yi)(yi)定(ding)范(fan)圍,如,苯板的導(dao)熱系數(shu)不(bu)可(ke)(ke)能為0,采用不(bu)同鋁合金建筑(zhu)型材和(he)普通單(dan)層(ceng)玻璃的建筑(zhu)外窗不(bu)可(ke)(ke)能達到保溫窗的要求(qiu)等等。當檢驗(yan)(yan)(yan)人(ren)員(yuan)(yuan)或檢驗(yan)(yan)(yan)報告(gao)的批(pi)準人(ren)員(yuan)(yuan)發現(xian)不(bu)符(fu)合一(yi)(yi)般(ban)規律(lv)的可(ke)(ke)疑(yi)(yi)數(shu)據時,應(ying)對(dui)可(ke)(ke)疑(yi)(yi)數(shu)據進行復核(he),并查清是否儀器設(she)備有(you)問題或檢驗(yan)(yan)(yan)人(ren)員(yuan)(yuan)操(cao)作失誤。能夠正確(que)判斷數(shu)據是否可(ke)(ke)疑(yi)(yi),是建立在對(dui)被(bei)檢測產品(pin)的理(li)論(lun)和(he)檢測實踐有(you)大量積累的基礎上,這(zhe)也是一(yi)(yi)個成熟(shu)的檢驗(yan)(yan)(yan)人(ren)員(yuan)(yuan),檢驗(yan)(yan)(yan)報告(gao)審核(he)、批(pi)準人(ren)員(yuan)(yuan)應(ying)有(you)的基本素質(zhi),沒有(you)長期訓練(lian),是不(bu)可(ke)(ke)能敏感地察覺檢驗(yan)(yan)(yan)數(shu)據可(ke)(ke)疑(yi)(yi)的。

NO.3

臨界值的處理有偏差

在(zai)檢(jian)(jian)驗(yan)過程中,由(you)于(yu)測(ce)(ce)量不(bu)確(que)(que)定度(du)的(de)存在(zai),可(ke)能(neng)會導(dao)致檢(jian)(jian)驗(yan)項(xiang)目(mu)在(zai)臨界(jie)值(zhi)的(de)判斷(duan)時(shi)有(you)偏差(cha)。例如:涂層(ceng)厚度(du),對(dui)(dui)于(yu)普通(tong)裝(zhuang)飾用鋁(lv)塑(su)板(ban),由(you)于(yu)涂層(ceng)厚度(du)相對(dui)(dui)較小,測(ce)(ce)量時(shi)“0”點的(de)精(jing)確(que)(que)校準(zhun)對(dui)(dui)于(yu)處在(zai)標(biao)準(zhun)規定的(de)臨界(jie)狀態(tai)的(de)產品(pin)而言顯得尤為重(zhong)要。如果用普通(tong)標(biao)準(zhun)基(ji)板(ban)進行(xing)調0,則可(ke)能(neng)出現(1~2)um的(de)偏差(cha),這(zhe)將可(ke)能(neng)導(dao)致產品(pin)由(you)“合格(ge)”滑向“不(bu)合格(ge)”邊緣。對(dui)(dui)于(yu)普通(tong)裝(zhuang)飾用鋁(lv)塑(su)板(ban),可(ke)以(yi)將產品(pin)除(chu)去(qu)涂層(ceng),在(zai)其裸露(lu)的(de)基(ji)材上進行(xing)調0,以(yi)保證結果的(de)準(zhun)確(que)(que)客(ke)觀性。因此,對(dui)(dui)于(yu)有(you)臨界(jie)值(zhi)的(de)檢(jian)(jian)驗(yan)結果,應組織由(you)不(bu)同檢(jian)(jian)驗(yan)人員(yuan)或(huo)者儀器(qi)設備進行(xing)多次的(de)比(bi)對(dui)(dui)試驗(yan),確(que)(que)保檢(jian)(jian)驗(yan)結果科學公正。

NO.4

對(dui)標準理解有(you)偏差

檢(jian)(jian)驗(yan)(yan)(yan)是(shi)一(yi)項很嚴謹的工(gong)作(zuo),個別檢(jian)(jian)驗(yan)(yan)(yan)人員對于標準的理解和使(shi)用(yong)(yong)不正(zheng)確(que)也直接影響了檢(jian)(jian)驗(yan)(yan)(yan)結果(guo)的準確(que)性。例如:氟碳涂(tu)層(ceng)普(pu)通裝(zhuang)飾板檢(jian)(jian)測(ce),GB/T22412-2008規定,對于氟碳涂(tu)層(ceng)普(pu)通裝(zhuang)飾用(yong)(yong)鋁塑(su)板,其涂(tu)層(ceng)性能(neng)的檢(jian)(jian)測(ce)應按照GB/T17748-2008進行。試(shi)驗(yan)(yan)(yan)中往往容易將“普(pu)通裝(zhuang)飾用(yong)(yong)”的概(gai)念(nian)先入為主,而(er)忽略了“其為氟碳涂(tu)層(ceng)”的事實,導(dao)致(zhi)采(cai)用(yong)(yong)檢(jian)(jian)驗(yan)(yan)(yan)標準不正(zheng)確(que),最終導(dao)致(zhi)檢(jian)(jian)驗(yan)(yan)(yan)結果(guo)失效。

NO.5

新(xin)上崗檢驗員(yuan)缺(que)乏有效監督

近(jin)年來,許多(duo)檢(jian)驗(yan)機構(gou)開(kai)展了新(xin)(xin)一輪的擴張(zhang),使(shi)(shi)得有經(jing)驗(yan)的檢(jian)驗(yan)人(ren)(ren)(ren)員(yuan)嚴重(zhong)缺(que)乏,個(ge)別實驗(yan)室(shi)(shi)(shi)新(xin)(xin)進(jin)人(ren)(ren)(ren)員(yuan)僅僅通過(guo)幾個(ge)月(yue)的培訓就上(shang)(shang)崗(gang)開(kai)展檢(jian)驗(yan)工(gong)作,這(zhe)類檢(jian)驗(yan)員(yuan)對(dui)(dui)檢(jian)驗(yan)不太熟練(lian),對(dui)(dui)異常(chang)數(shu)據缺(que)乏敏感(gan),而(er)又對(dui)(dui)這(zhe)類人(ren)(ren)(ren)員(yuan)缺(que)乏有效的監督(du)(du),使(shi)(shi)得他們出現(xian)錯誤(wu)的可能性遠遠超(chao)過(guo)成熟員(yuan)工(gong)。因此,使(shi)(shi)用(yong)經(jing)驗(yan)不足而(er)又缺(que)少監督(du)(du)的新(xin)(xin)上(shang)(shang)崗(gang)檢(jian)驗(yan)員(yuan),潛在(zai)(zai)風險較大(da)。因此,要按照(zhao)實驗(yan)室(shi)(shi)(shi)資質認定評審準則的要求,對(dui)(dui)使(shi)(shi)用(yong)在(zai)(zai)培人(ren)(ren)(ren)員(yuan)應有足夠的監督(du)(du)。實驗(yan)室(shi)(shi)(shi)在(zai)(zai)使(shi)(shi)用(yong)新(xin)(xin)上(shang)(shang)崗(gang)人(ren)(ren)(ren)員(yuan)或轉(zhuan)崗(gang)人(ren)(ren)(ren)員(yuan)時(shi),除(chu)應考核上(shang)(shang)崗(gang)外,檢(jian)驗(yan)時(shi)實驗(yan)室(shi)(shi)(shi)監督(du)(du)員(yuan)應加強監督(du)(du),防止出現(xian)檢(jian)驗(yan)失誤(wu)。


PART 04

檢驗原始記錄不規范缺少可追溯性


檢(jian)(jian)驗(yan)(yan)原始(shi)記(ji)錄(lu)不規(gui)范,雖然不會(hui)改(gai)變檢(jian)(jian)驗(yan)(yan)結果(guo),但原始(shi)記(ji)錄(lu)是實(shi)(shi)驗(yan)(yan)室(shi)檢(jian)(jian)驗(yan)(yan)過程的證(zheng)(zheng)明材料,一旦實(shi)(shi)驗(yan)(yan)室(shi)與檢(jian)(jian)驗(yan)(yan)委托方或(huo)相關第(di)三(san)方發生糾紛時,檢(jian)(jian)驗(yan)(yan)原始(shi)記(ji)錄(lu)就不能(neng)起到證(zheng)(zheng)據的作用,將實(shi)(shi)驗(yan)(yan)室(shi)置于危險(xian)境地。每個實(shi)(shi)驗(yan)(yan)室(shi)都會(hui)按實(shi)(shi)驗(yan)(yan)室(shi)資質認定(ding)(ding)評審準則(ze)的規(gui)定(ding)(ding),制訂自己的記(ji)錄(lu)管(guan)理規(gui)定(ding)(ding),但個別實(shi)(shi)驗(yan)(yan)室(shi)不能(neng)很好(hao)地執行,表現在:

NO.1

檢(jian)驗樣品的準備、處(chu)置和制(zhi)備記錄不全

檢驗(yan)(yan)原(yuan)始記(ji)錄最基本的(de)(de)(de)(de)要(yao)求是將觀察(cha)(cha)(cha)到的(de)(de)(de)(de)情(qing)況、數據加(jia)(jia)以記(ji)錄,這里(li)指的(de)(de)(de)(de)觀察(cha)(cha)(cha)到的(de)(de)(de)(de)情(qing)況包括(kuo)從樣(yang)品(pin)的(de)(de)(de)(de)準(zhun)備(bei)、處(chu)(chu)置和制(zhi)備(bei)開始到檢驗(yan)(yan)結(jie)束所觀察(cha)(cha)(cha)到的(de)(de)(de)(de)全(quan)過程(cheng)。實驗(yan)(yan)室往(wang)往(wang)對檢驗(yan)(yan)過程(cheng)觀察(cha)(cha)(cha)到的(de)(de)(de)(de)情(qing)況記(ji)錄比(bi)較(jiao)詳細,但對樣(yang)品(pin)的(de)(de)(de)(de)準(zhun)備(bei)、處(chu)(chu)置和制(zhi)備(bei)過程(cheng),如樣(yang)品(pin)在恒溫恒濕間的(de)(de)(de)(de)等溫過程(cheng)、水(shui)泥的(de)(de)(de)(de)水(shui)養(yang)護過程(cheng)等過程(cheng)記(ji)錄不(bu)全(quan),甚至(zhi)不(bu)予記(ji)錄。按照(zhao)“實驗(yan)(yan)室記(ji)錄應(ying)及(ji)時、準(zhun)確(que)、完整”的(de)(de)(de)(de)要(yao)求,檢驗(yan)(yan)樣(yang)品(pin)的(de)(de)(de)(de)準(zhun)備(bei)、處(chu)(chu)置和制(zhi)備(bei),也是檢驗(yan)(yan)的(de)(de)(de)(de)過程(cheng),也應(ying)及(ji)時、準(zhun)確(que)、完整地加(jia)(jia)以記(ji)錄,同時,對檢驗(yan)(yan)員要(yao)加(jia)(jia)強(qiang)教育,要(yao)有完整準(zhun)確(que)地記(ji)錄原(yuan)始記(ji)錄的(de)(de)(de)(de)意識。

NO.2

引(yin)用(yong)數(shu)據缺少可(ke)追溯性(xing)

檢(jian)驗后的(de)(de)計(ji)算過(guo)程中(zhong)(zhong)往往需(xu)要引用(yong)一些常數(shu)(shu)或(huo)(huo)系數(shu)(shu)。所有引用(yong)數(shu)(shu)據(ju)都應(ying)(ying)(ying)有出處,常數(shu)(shu)主要是(shi)標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)中(zhong)(zhong)給出,系數(shu)(shu)則是(shi)在(zai)檢(jian)驗前作出標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)后得(de)出,標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)不(bu)是(shi)做出一次(ci)后永遠使(shi)用(yong),而是(shi)應(ying)(ying)(ying)定期(qi)做標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian),因此(ci),在(zai)使(shi)用(yong)標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)時,應(ying)(ying)(ying)在(zai)原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)中(zhong)(zhong)附上本次(ci)檢(jian)測使(shi)用(yong)的(de)(de)標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)或(huo)(huo)注明標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)編號。而有的(de)(de)實(shi)驗室(shi)在(zai)記(ji)(ji)(ji)錄(lu)原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)時,并不(bu)將標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)附在(zai)原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)中(zhong)(zhong)或(huo)(huo)在(zai)原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)中(zhong)(zhong)注明出處,使(shi)其引用(yong)的(de)(de)數(shu)(shu)據(ju)不(bu)具有可追溯性。因此(ci),檢(jian)驗人員在(zai)記(ji)(ji)(ji)錄(lu)檢(jian)驗原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)時,應(ying)(ying)(ying)將引用(yong)的(de)(de)標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)附在(zai)原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)中(zhong)(zhong),或(huo)(huo)將引用(yong)的(de)(de)標(biao)(biao)(biao)準(zhun)(zhun)(zhun)(zhun)曲線(xian)的(de)(de)編號在(zai)原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)中(zhong)(zhong)注明,使(shi)得(de)原(yuan)始(shi)記(ji)(ji)(ji)錄(lu)中(zhong)(zhong)的(de)(de)引用(yong)數(shu)(shu)據(ju)具有可追溯性。

NO.3

從(cong)筆記本上轉抄檢驗記錄

檢(jian)驗(yan)原始(shi)(shi)記(ji)錄(lu)是(shi)原始(shi)(shi)的(de)(de)(de)觀察(cha)記(ji)錄(lu),應(ying)該在(zai)觀察(cha)時實時記(ji)錄(lu),有(you)些檢(jian)驗(yan)員出于(yu)自己保留數(shu)據(ju)的(de)(de)(de)原因(yin),也有(you)些檢(jian)驗(yan)員出于(yu)保持原始(shi)(shi)記(ji)錄(lu)干(gan)凈整潔的(de)(de)(de)原因(yin),養(yang)成了將(jiang)原始(shi)(shi)記(ji)錄(lu)先記(ji)錄(lu)在(zai)筆記(ji)本(ben)上(shang)(shang),過(guo)后(hou)再轉抄到(dao)(dao)格式(shi)化的(de)(de)(de)原始(shi)(shi)記(ji)錄(lu)上(shang)(shang)。因(yin)此,實驗(yan)室(shi)有(you)必(bi)要要求檢(jian)驗(yan)人員將(jiang)記(ji)錄(lu)及時記(ji)錄(lu)在(zai)受控(kong)的(de)(de)(de)格式(shi)化的(de)(de)(de)原始(shi)(shi)記(ji)錄(lu)表式(shi)中,不得先記(ji)錄(lu)在(zai)筆記(ji)本(ben)上(shang)(shang)然后(hou)轉抄到(dao)(dao)格式(shi)化的(de)(de)(de)原始(shi)(shi)記(ji)錄(lu)上(shang)(shang)。


PART 05

檢驗報(bao)告的錯誤


檢(jian)驗(yan)報(bao)(bao)告(gao)(gao)是檢(jian)驗(yan)機構交給客(ke)戶的(de)(de)最(zui)終產品,因此(ci)檢(jian)驗(yan)報(bao)(bao)告(gao)(gao)質量(liang)也應該是實驗(yan)室(shi)重點關(guan)注的(de)(de)內(nei)容之一(yi)。檢(jian)驗(yan)報(bao)(bao)告(gao)(gao)的(de)(de)錯誤(wu)通常有以下兩種表現:

NO.1

報告編制錯誤

檢(jian)驗(yan)報告編(bian)制(zhi)(zhi)(zhi)人員在編(bian)制(zhi)(zhi)(zhi)檢(jian)驗(yan)報告過(guo)程(cheng)中,經常(chang)會因為(wei)疏忽(hu)出現輸入性錯(cuo)誤(wu)(wu),如(ru):技術(shu)要求、實測數(shu)(shu)據、單項(xiang)判定等(deng)文字(zi)或數(shu)(shu)字(zi)輸入錯(cuo)誤(wu)(wu),造(zao)(zao)成(cheng)誤(wu)(wu)判;委托檢(jian)驗(yan)日期(qi)、樣品生產日期(qi)、檢(jian)驗(yan)日期(qi)等(deng)日期(qi)輸入錯(cuo)誤(wu)(wu),造(zao)(zao)成(cheng)時(shi)間(jian)邏(luo)(luo)輯上(shang)的問(wen)題。當(dang)前(qian),絕大多數(shu)(shu)實驗(yan)室都(dou)采用業務管理網絡系(xi)統編(bian)制(zhi)(zhi)(zhi)檢(jian)驗(yan)報告,對(dui)于時(shi)間(jian)邏(luo)(luo)輯上(shang)的問(wen)題,可以通過(guo)在系(xi)統上(shang)進行時(shi)間(jian)關聯提醒(xing)設置,對(dui)不(bu)符合邏(luo)(luo)輯的時(shi)間(jian)進行提醒(xing),可有效防止時(shi)間(jian)邏(luo)(luo)輯錯(cuo)誤(wu)(wu);對(dui)其(qi)他輸入性錯(cuo)誤(wu)(wu),則要通過(guo)加強報告編(bian)制(zhi)(zhi)(zhi)人員和審核、批準人員的責(ze)任心(xin)來解決。

NO.2

非授權(quan)人簽字

按照實(shi)(shi)(shi)驗(yan)(yan)室(shi)(shi)資質認定(ding)的(de)要求,檢(jian)驗(yan)(yan)報(bao)(bao)告(gao)的(de)簽(qian)(qian)(qian)(qian)發應(ying)由(you)授(shou)(shou)權(quan)(quan)(quan)簽(qian)(qian)(qian)(qian)字(zi)人(ren)簽(qian)(qian)(qian)(qian)發。授(shou)(shou)權(quan)(quan)(quan)簽(qian)(qian)(qian)(qian)字(zi)人(ren)應(ying)對檢(jian)測(ce)技術(shu)、結果評定(ding)、設備(bei)維護(hu)校(xiao)準(zhun)、記錄和報(bao)(bao)告(gao)核查程(cheng)序等非常熟(shu)悉(xi),因此,授(shou)(shou)權(quan)(quan)(quan)簽(qian)(qian)(qian)(qian)字(zi)人(ren)的(de)授(shou)(shou)權(quan)(quan)(quan)簽(qian)(qian)(qian)(qian)字(zi)的(de)能(neng)力范(fan)(fan)圍、試驗(yan)(yan)地(di)址(zhi)范(fan)(fan)圍是(shi)有限制的(de)。在實(shi)(shi)(shi)驗(yan)(yan)室(shi)(shi)運作過程(cheng)中(zhong),部(bu)分非授(shou)(shou)權(quan)(quan)(quan)簽(qian)(qian)(qian)(qian)字(zi)人(ren)簽(qian)(qian)(qian)(qian)發檢(jian)驗(yan)(yan)報(bao)(bao)告(gao),或授(shou)(shou)權(quan)(quan)(quan)簽(qian)(qian)(qian)(qian)字(zi)人(ren)不了(le)解(jie)自己的(de)授(shou)(shou)權(quan)(quan)(quan)簽(qian)(qian)(qian)(qian)字(zi)能(neng)力范(fan)(fan)圍或試驗(yan)(yan)地(di)址(zhi)范(fan)(fan)圍,超越授(shou)(shou)權(quan)(quan)(quan)范(fan)(fan)圍簽(qian)(qian)(qian)(qian)發檢(jian)驗(yan)(yan)報(bao)(bao)告(gao),造成檢(jian)驗(yan)(yan)報(bao)(bao)告(gao)的(de)錯誤(wu)。這(zhe)種超越能(neng)力范(fan)(fan)圍批準(zhun)檢(jian)驗(yan)(yan)報(bao)(bao)告(gao),違反了(le)實(shi)(shi)(shi)驗(yan)(yan)室(shi)(shi)標識使用的(de)規定(ding),會使檢(jian)驗(yan)(yan)報(bao)(bao)告(gao)失去法律效力。



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