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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: 瀏覽數:968

PART 01
超范圍蓋章

按(an)照《計(ji)量(liang)(liang)法》規定(ding),對社會出具(ju)具(ju)有(you)證(zheng)明作(zuo)用(yong)的(de)(de)數據實(shi)驗(yan)(yan)室(shi)必須經過實(shi)驗(yan)(yan)室(shi)資質(zhi)(zhi)認(ren)(ren)定(ding)(計(ji)量(liang)(liang)認(ren)(ren)證(zheng))和(he)(he)/或(huo)CNAS認(ren)(ren)可(ke),而(er)資質(zhi)(zhi)認(ren)(ren)定(ding)和(he)(he)/或(huo)CNAS認(ren)(ren)可(ke)是(shi)限定(ding)實(shi)驗(yan)(yan)室(shi)能(neng)(neng)力(li)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)的(de)(de),實(shi)驗(yan)(yan)室(shi)只能(neng)(neng)在能(neng)(neng)力(li)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)限定(ding)的(de)(de)產品(pin)(參數)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)內出具(ju)帶(dai)相(xiang)應標識的(de)(de)檢(jian)(jian)驗(yan)(yan)報告,檢(jian)(jian)驗(yan)(yan)使用(yong)的(de)(de)標準不在能(neng)(neng)力(li)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)者,我們稱之為(wei)超(chao)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)檢(jian)(jian)驗(yan)(yan)。國家質(zhi)(zhi)檢(jian)(jian)總局(ju)發布執行的(de)(de)《產品(pin)質(zhi)(zhi)量(liang)(liang)監(jian)督抽查(cha)管(guan)理辦法》、《產品(pin)質(zhi)(zhi)量(liang)(liang)檢(jian)(jian)驗(yan)(yan)機(ji)構(gou)工作(zuo)質(zhi)(zhi)量(liang)(liang)分類監(jian)管(guan)辦法》以(yi)及(ji)其他規定(ding)中也都明確(que)規定(ding)實(shi)驗(yan)(yan)室(shi)不得超(chao)能(neng)(neng)力(li)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)開(kai)展檢(jian)(jian)測工作(zuo),但(dan)在實(shi)際工作(zuo)過程中,個(ge)別檢(jian)(jian)驗(yan)(yan)機(ji)構(gou)超(chao)能(neng)(neng)力(li)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)檢(jian)(jian)測情況(kuang)時有(you)發生(sheng)。超(chao)范(fan)(fan)(fan)(fan)圍(wei)(wei)(wei)檢(jian)(jian)驗(yan)(yan)主要有(you)三種形式:

NO.1

故意超能力范圍(wei)檢驗

實(shi)驗室(shi)(shi)或實(shi)驗室(shi)(shi)中(zhong)個別人員為滿足(zu)客戶要求(qiu),為實(shi)驗室(shi)(shi)爭取經濟(ji)利益,對不在能(neng)力范(fan)圍(wei)內的(de)產(chan)品開展檢(jian)驗工作,出具(ju)帶(dai)標識的(de)檢(jian)驗報告;或實(shi)驗室(shi)(shi)人員以為采用標準中(zhong)的(de)個別標準在能(neng)力范(fan)圍(wei)內,誤將產(chan)品進行(xing)檢(jian)驗并(bing)出具(ju)帶(dai)標識的(de)檢(jian)驗報告。

近年來,質檢(jian)總局(ju)、認監委、省市質監局(ju)對超能(neng)(neng)力(li)(li)范圍檢(jian)測(ce)的(de)(de)處罰(fa)都(dou)非常嚴厲,甚至停(ting)止(zhi)個別(bie)實驗室(shi)的(de)(de)檢(jian)測(ce)活動。因此(ci),實驗室(shi)應將(jiang)超能(neng)(neng)力(li)(li)范圍檢(jian)測(ce)的(de)(de)后果向每一位員工宣(xuan)傳,不能(neng)(neng)為(wei)經濟(ji)利益或所謂的(de)(de)為(wei)企業(ye)著想而故(gu)意超能(neng)(neng)力(li)(li)范圍檢(jian)測(ce);同時實驗室(shi)還應認真(zhen)梳理(li)實驗室(shi)的(de)(de)能(neng)(neng)力(li)(li)范圍,對確(que)實有(you)設(she)備、具備檢(jian)驗能(neng)(neng)力(li)(li)而不在能(neng)(neng)力(li)(li)范圍內的(de)(de)標準,應盡快進行擴項,提(ti)高為(wei)企業(ye)服(fu)務的(de)(de)能(neng)(neng)力(li)(li)。

NO.2

標(biao)準變更后(hou)未及時進行能力(li)確認

近年來,不管是產品(pin)標(biao)(biao)準(zhun)(zhun)還是方法(fa)標(biao)(biao)準(zhun)(zhun),標(biao)(biao)準(zhun)(zhun)的(de)(de)(de)變(bian)(bian)(bian)更(geng)(geng)非常頻(pin)繁。按照實(shi)(shi)驗室(shi)(shi)資質認定(ding)(ding)評審(shen)準(zhun)(zhun)則(ze)的(de)(de)(de)規定(ding)(ding),實(shi)(shi)驗室(shi)(shi)使用(yong)的(de)(de)(de)文件必(bi)須是現行有(you)效的(de)(de)(de),因(yin)此,實(shi)(shi)驗室(shi)(shi)不能使用(yong)作(zuo)廢標(biao)(biao)準(zhun)(zhun)開(kai)展(zhan)檢(jian)測工(gong)作(zuo)。實(shi)(shi)驗室(shi)(shi)采(cai)用(yong)新(xin)標(biao)(biao)準(zhun)(zhun)開(kai)展(zhan)工(gong)作(zuo),則(ze)必(bi)須及時到(dao)實(shi)(shi)驗室(shi)(shi)資質認定(ding)(ding)和/或(huo)CNAS認可的(de)(de)(de)發(fa)證(zheng)機構進行標(biao)(biao)準(zhun)(zhun)變(bian)(bian)(bian)更(geng)(geng)。目(mu)前,有(you)的(de)(de)(de)實(shi)(shi)驗室(shi)(shi)怕麻煩(fan),往(wang)(wang)往(wang)(wang)等到(dao)復(fu)評審(shen)或(huo)監督(du)評審(shen)時才(cai)進行標(biao)(biao)準(zhun)(zhun)變(bian)(bian)(bian)更(geng)(geng)。在新(xin)標(biao)(biao)準(zhun)(zhun)開(kai)始實(shi)(shi)施到(dao)通(tong)過實(shi)(shi)驗室(shi)(shi)復(fu)評審(shen)或(huo)監督(du)評審(shen)之間如果按新(xin)標(biao)(biao)準(zhun)(zhun)開(kai)展(zhan)檢(jian)驗工(gong)作(zuo),則(ze)是超范圍(wei)檢(jian)驗。

還有(you)一種隱性(xing)超能(neng)(neng)(neng)力(li)范(fan)圍(wei)的(de)情(qing)形。實驗(yan)室(shi)通過(guo)的(de)檢(jian)(jian)(jian)驗(yan)能(neng)(neng)(neng)力(li)范(fan)圍(wei)時,實際隱含的(de)意(yi)思是包括產品(pin)標(biao)準中(zhong)引用標(biao)準也通過(guo)實驗(yan)室(shi)評審(shen)。當其引用標(biao)準出現標(biao)準變(bian)更尤(you)其是檢(jian)(jian)(jian)驗(yan)方(fang)法、環境設(she)施有(you)實際變(bian)化(hua)(hua)的(de)情(qing)況下,其產品(pin)檢(jian)(jian)(jian)驗(yan)的(de)實際檢(jian)(jian)(jian)驗(yan)能(neng)(neng)(neng)力(li)有(you)可能(neng)(neng)(neng)出現變(bian)化(hua)(hua)。這(zhe)種變(bian)化(hua)(hua),可能(neng)(neng)(neng)會(hui)導(dao)致(zhi)實驗(yan)室(shi)不能(neng)(neng)(neng)按現行有(you)效(xiao)標(biao)準正常開展檢(jian)(jian)(jian)驗(yan)工作。我們把(ba)這(zhe)種變(bian)化(hua)(hua)稱之為“隱性(xing)的(de)”超范(fan)圍(wei)檢(jian)(jian)(jian)驗(yan)。

由于標(biao)(biao)準(zhun)(zhun)(zhun)變更后需要重新(xin)進行能力(li)確認(ren),個(ge)別實驗(yan)室怕麻(ma)煩,往(wang)往(wang)會等到(dao)監督評(ping)審或復評(ping)審時才進行確認(ren),從而(er)導致超能力(li)范圍檢(jian)驗(yan)。因此,實驗(yan)室應(ying)關注和避免(mian)這種(zhong)情況的(de)發生,在能力(li)未確認(ren)前,不得使(shi)用(yong)(yong)新(xin)標(biao)(biao)準(zhun)(zhun)(zhun)開展檢(jian)驗(yan)。對(dui)于產品標(biao)(biao)準(zhun)(zhun)(zhun)中引(yin)用(yong)(yong)標(biao)(biao)準(zhun)(zhun)(zhun)的(de)變更,實驗(yan)室更應(ying)關注,以免(mian)采用(yong)(yong)作廢標(biao)(biao)準(zhun)(zhun)(zhun)開展檢(jian)驗(yan)而(er)造(zao)成檢(jian)驗(yan)結果的(de)誤判和可(ke)能帶來的(de)檢(jian)驗(yan)風險。

NO.3

亂(luan)用CNAS、CMA、標(biao)識

很多(duo)實驗(yan)(yan)室(shi)通過(guo)(guo)了(le)CNAS認(ren)可(ke),也通過(guo)(guo)了(le)實驗(yan)(yan)室(shi)資質認(ren)定,而(er)這(zhe)兩個(ge)認(ren)可(ke)不在(zai)同一(yi)時間進行認(ren)可(ke),當申請(qing)擴項(xiang)或(huo)標(biao)準(zhun)變更時,往往是(shi)一(yi)個(ge)通過(guo)(guo)了(le),而(er)另(ling)一(yi)個(ge)還要過(guo)(guo)段(duan)時間才認(ren)可(ke)。有部分實驗(yan)(yan)室(shi)尤其是(shi)部分中(zhong)小(xiao)實驗(yan)(yan)室(shi),取得能(neng)力(li)范圍以CMA為主(zhu),CNAS的能(neng)力(li)范圍很小(xiao),而(er)檢驗(yan)(yan)報告的封面(mian)一(yi)般是(shi)將幾(ji)個(ge)標(biao)識均直接印在(zai)封面(mian)上,這(zhe)使得實驗(yan)(yan)室(shi)誤用(yong)標(biao)識。因此,實驗(yan)(yan)室(shi)應(ying)按通過(guo)(guo)的能(neng)力(li)范圍分別印制檢驗(yan)(yan)封面(mian),按規(gui)定使用(yong)。


PART 02

設(she)備及環境設(she)施不能(neng)滿(man)足標準要求(qiu)


設(she)備及環(huan)境(jing)設(she)施是實驗室(shi)開展檢驗的(de)必備工(gong)具,設(she)備及環(huan)境(jing)設(she)施是否(fou)滿(man)足標準,將直接(jie)影(ying)(ying)響數據(ju)的(de)準確性,對檢驗結(jie)果和判(pan)定有重大影(ying)(ying)響。設(she)備及環(huan)境(jing)設(she)施不能滿(man)足要求的(de)原因主(zhu)要有:

NO.1

量值溯(su)源未(wei)按規(gui)定

儀(yi)(yi)器(qi)(qi)設備(bei)(bei)的(de)(de)量值(zhi)溯源是(shi)保證其測量準(zhun)(zhun)確性(xing)的(de)(de)主要手段(duan)之(zhi)一,按照(zhao)實(shi)(shi)驗室資質認定(ding)評審準(zhun)(zhun)則要求(qiu),儀(yi)(yi)器(qi)(qi)設備(bei)(bei)使(shi)用前應經過檢(jian)定(ding)或(huo)校(xiao)(xiao)(xiao)(xiao)(xiao)準(zhun)(zhun),必要時(shi),在二次檢(jian)定(ding)或(huo)校(xiao)(xiao)(xiao)(xiao)(xiao)準(zhun)(zhun)之(zhi)間應進行期間核查,以保證數據的(de)(de)準(zhun)(zhun)確性(xing)。但部(bu)分實(shi)(shi)驗室未按規定(ding)將儀(yi)(yi)器(qi)(qi)送計(ji)量部(bu)門(men)進行檢(jian)定(ding)或(huo)校(xiao)(xiao)(xiao)(xiao)(xiao)準(zhun)(zhun),造成儀(yi)(yi)器(qi)(qi)失準(zhun)(zhun),還(huan)有個別檢(jian)定(ding)/校(xiao)(xiao)(xiao)(xiao)(xiao)準(zhun)(zhun)實(shi)(shi)驗室不(bu)(bu)經檢(jian)定(ding)/校(xiao)(xiao)(xiao)(xiao)(xiao)準(zhun)(zhun)就出具證書(shu)。實(shi)(shi)驗室內經常會有儀(yi)(yi)器(qi)(qi)設備(bei)(bei)是(shi)沒有檢(jian)定(ding)規程(cheng)或(huo)校(xiao)(xiao)(xiao)(xiao)(xiao)準(zhun)(zhun)方法,計(ji)量部(bu)門(men)往(wang)往(wang)圖省事,僅(jin)對儀(yi)(yi)器(qi)(qi)使(shi)用的(de)(de)計(ji)量器(qi)(qi)具進行檢(jian)定(ding)或(huo)校(xiao)(xiao)(xiao)(xiao)(xiao)準(zhun)(zhun),而其總(zong)體設備(bei)(bei)是(shi)否合格則不(bu)(bu)做綜合判定(ding),使(shi)得(de)設備(bei)(bei)顯示(shi)的(de)(de)數據是(shi)否準(zhun)(zhun)確不(bu)(bu)得(de)而知。如(ru)果此時(shi)不(bu)(bu)采用能力驗證或(huo)實(shi)(shi)驗室比對的(de)(de)方法對儀(yi)(yi)器(qi)(qi)進行驗證,則會帶來(lai)很大(da)的(de)(de)風險(xian)。

NO.2

設(she)備精度下降(jiang)

有的檢驗機(ji)構(gou),尤其是中小型檢驗機(ji)構(gou),由(you)于資金的不(bu)足,使(shi)得(de)設(she)(she)備(bei)(bei)長期服役,得(de)不(bu)到(dao)及時更(geng)新(xin)(xin)。由(you)于設(she)(she)備(bei)(bei)使(shi)用(yong)年限過長,或使(shi)用(yong)環境惡劣,設(she)(she)備(bei)(bei)的精度(du)下降,檢驗數(shu)據的可信(xin)度(du)下降。因(yin)此,實(shi)驗室(shi)應(ying)及時更(geng)新(xin)(xin)設(she)(she)備(bei)(bei),當設(she)(she)備(bei)(bei)一時不(bu)能更(geng)新(xin)(xin),應(ying)增加校準(zhun)的頻次(ci)、做(zuo)期間核(he)查、采用(yong)實(shi)驗室(shi)間比對或設(she)(she)備(bei)(bei)間比對等方(fang)式驗證設(she)(she)備(bei)(bei)的可靠(kao)(kao)性,以保證檢測數(shu)據準(zhun)確可靠(kao)(kao)。

NO.3

環境設施不符合標(biao)準要求

很多(duo)試驗(yan)(yan)對(dui)(dui)(dui)(dui)(dui)環(huan)(huan)境(jing)(jing)設(she)施的(de)(de)要(yao)求是很高的(de)(de),對(dui)(dui)(dui)(dui)(dui)檢驗(yan)(yan)結果(guo)的(de)(de)影響很大,但(dan)部分檢驗(yan)(yan)機構對(dui)(dui)(dui)(dui)(dui)環(huan)(huan)境(jing)(jing)設(she)施不是很重視,不能很好(hao)地滿(man)足檢驗(yan)(yan)的(de)(de)要(yao)求。如:水(shui)泥(ni)檢驗(yan)(yan)的(de)(de)水(shui)養護,水(shui)的(de)(de)溫(wen)度(du)規定(ding)為(20±1)℃,超(chao)出(chu)標準規定(ding)的(de)(de)溫(wen)度(du)范(fan)圍(wei),尤其是超(chao)出(chu)溫(wen)度(du)較多(duo)時,對(dui)(dui)(dui)(dui)(dui)檢驗(yan)(yan)結果(guo)影響就會很大。而我們在評審中發(fa)現(xian),部分水(shui)泥(ni)實(shi)驗(yan)(yan)室(shi)中,水(shui)養護都是在水(shui)池中進(jin)行,水(shui)溫(wen)低(di)了加(jia)熱水(shui),水(shui)溫(wen)高了加(jia)冷水(shui),這樣的(de)(de)溫(wen)控(kong)方式無法(fa)保(bao)證水(shui)溫(wen)控(kong)制精度(du),其養護后的(de)(de)檢測數據(ju)也是不準確的(de)(de)。因(yin)此,對(dui)(dui)(dui)(dui)(dui)環(huan)(huan)境(jing)(jing)設(she)施要(yao)求高的(de)(de)試驗(yan)(yan),實(shi)驗(yan)(yan)室(shi)應確保(bao)檢測的(de)(de)環(huan)(huan)境(jing)(jing)設(she)施符合標準要(yao)求。


PART 03

檢測過程質量缺乏(fa)有效(xiao)控制


由于檢測過程不(bu)規范而(er)產生的檢驗(yan)結論不(bu)正確(que)或(huo)數據不(bu)準(zhun)確(que)也時(shi)有發生,主要表(biao)現在:

NO.1

檢(jian)驗和(he)計(ji)算粗心大意(yi)

檢(jian)(jian)(jian)驗是一個需(xu)要專注的(de)過(guo)程(cheng)(cheng),稍有疏忽,就容易出(chu)(chu)現(xian)(xian)差錯(cuo)。而隨著手機的(de)普及(ji),檢(jian)(jian)(jian)驗過(guo)程(cheng)(cheng)中(zhong),檢(jian)(jian)(jian)驗人員在(zai)檢(jian)(jian)(jian)驗或(huo)檢(jian)(jian)(jian)驗后的(de)數據計算過(guo)程(cheng)(cheng)中(zhong)接聽手機的(de)現(xian)(xian)象(xiang)非常(chang)普遍,如此(ci)以及(ji)其他(ta)的(de)粗心(xin)造成檢(jian)(jian)(jian)驗失(shi)誤(wu)的(de)案例也時有發生(sheng)。檢(jian)(jian)(jian)驗和計算過(guo)程(cheng)(cheng)中(zhong)粗心(xin)大意(yi)造成的(de)檢(jian)(jian)(jian)驗失(shi)誤(wu)雖不常(chang)見,但一旦出(chu)(chu)現(xian)(xian)這種情況(kuang),將直(zhi)接導致檢(jian)(jian)(jian)驗結果出(chu)(chu)現(xian)(xian)差錯(cuo)。

NO.2

對可疑(yi)數據不(bu)敏感

一(yi)般而言(yan),每一(yi)種物質(zhi)都有其自身特(te)性,其檢(jian)(jian)(jian)(jian)測數據應在一(yi)定范圍,如,苯板的(de)(de)導(dao)熱系數不可(ke)(ke)能(neng)(neng)(neng)為0,采用不同(tong)鋁合金建筑型材和(he)普通單(dan)層(ceng)玻(bo)璃的(de)(de)建筑外(wai)窗不可(ke)(ke)能(neng)(neng)(neng)達到保(bao)溫窗的(de)(de)要求等(deng)等(deng)。當(dang)檢(jian)(jian)(jian)(jian)驗人(ren)員(yuan)或檢(jian)(jian)(jian)(jian)驗報(bao)告的(de)(de)批(pi)(pi)準(zhun)人(ren)員(yuan)發現不符合一(yi)般規律的(de)(de)可(ke)(ke)疑(yi)數據時,應對可(ke)(ke)疑(yi)數據進(jin)行復核,并查清是(shi)否儀器設備有問題(ti)或檢(jian)(jian)(jian)(jian)驗人(ren)員(yuan)操作失(shi)誤(wu)。能(neng)(neng)(neng)夠(gou)正確(que)判(pan)斷(duan)數據是(shi)否可(ke)(ke)疑(yi),是(shi)建立在對被檢(jian)(jian)(jian)(jian)測產(chan)品的(de)(de)理論和(he)檢(jian)(jian)(jian)(jian)測實踐有大量積累的(de)(de)基礎上,這也是(shi)一(yi)個成熟的(de)(de)檢(jian)(jian)(jian)(jian)驗人(ren)員(yuan),檢(jian)(jian)(jian)(jian)驗報(bao)告審核、批(pi)(pi)準(zhun)人(ren)員(yuan)應有的(de)(de)基本素(su)質(zhi),沒有長(chang)期(qi)訓練,是(shi)不可(ke)(ke)能(neng)(neng)(neng)敏感地(di)察覺檢(jian)(jian)(jian)(jian)驗數據可(ke)(ke)疑(yi)的(de)(de)。

NO.3

臨界(jie)值(zhi)的處理有偏差

在(zai)檢(jian)驗(yan)(yan)過程中,由(you)于(yu)(yu)測量不(bu)確定(ding)度的(de)(de)(de)存在(zai),可(ke)(ke)能(neng)會導(dao)致檢(jian)驗(yan)(yan)項目在(zai)臨界值的(de)(de)(de)判斷時有(you)(you)偏差。例(li)如(ru)(ru):涂層(ceng)厚度,對(dui)于(yu)(yu)普(pu)通裝飾(shi)用(yong)(yong)鋁塑(su)板(ban),由(you)于(yu)(yu)涂層(ceng)厚度相對(dui)較小,測量時“0”點的(de)(de)(de)精(jing)確校準對(dui)于(yu)(yu)處在(zai)標準規定(ding)的(de)(de)(de)臨界狀(zhuang)態的(de)(de)(de)產品而言顯得尤為重要(yao)。如(ru)(ru)果(guo)(guo)用(yong)(yong)普(pu)通標準基板(ban)進(jin)行(xing)調0,則可(ke)(ke)能(neng)出現(xian)(1~2)um的(de)(de)(de)偏差,這將可(ke)(ke)能(neng)導(dao)致產品由(you)“合(he)格(ge)”滑向“不(bu)合(he)格(ge)”邊緣。對(dui)于(yu)(yu)普(pu)通裝飾(shi)用(yong)(yong)鋁塑(su)板(ban),可(ke)(ke)以將產品除去涂層(ceng),在(zai)其裸露的(de)(de)(de)基材上進(jin)行(xing)調0,以保證結(jie)果(guo)(guo)的(de)(de)(de)準確客(ke)觀性。因此,對(dui)于(yu)(yu)有(you)(you)臨界值的(de)(de)(de)檢(jian)驗(yan)(yan)結(jie)果(guo)(guo),應組織由(you)不(bu)同檢(jian)驗(yan)(yan)人員或者儀器設備進(jin)行(xing)多次的(de)(de)(de)比(bi)對(dui)試(shi)驗(yan)(yan),確保檢(jian)驗(yan)(yan)結(jie)果(guo)(guo)科學(xue)公(gong)正。

NO.4

對標準理解有偏差

檢(jian)驗(yan)是一(yi)項很嚴謹的(de)工作,個別(bie)檢(jian)驗(yan)人員對(dui)于(yu)標(biao)準(zhun)的(de)理解和使用不正(zheng)確(que)也直接影響(xiang)了(le)檢(jian)驗(yan)結果的(de)準(zhun)確(que)性(xing)。例如:氟碳涂(tu)層普通(tong)(tong)裝(zhuang)(zhuang)飾板檢(jian)測,GB/T22412-2008規定,對(dui)于(yu)氟碳涂(tu)層普通(tong)(tong)裝(zhuang)(zhuang)飾用鋁塑板,其涂(tu)層性(xing)能的(de)檢(jian)測應按照GB/T17748-2008進行。試(shi)驗(yan)中往往容易將“普通(tong)(tong)裝(zhuang)(zhuang)飾用”的(de)概(gai)念先入為主,而忽略了(le)“其為氟碳涂(tu)層”的(de)事實,導致采(cai)用檢(jian)驗(yan)標(biao)準(zhun)不正(zheng)確(que),最終導致檢(jian)驗(yan)結果失效。

NO.5

新上(shang)崗檢(jian)驗員缺乏有效監督

近年(nian)來,許多檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)機構開展了新一輪(lun)的擴張(zhang),使(shi)(shi)(shi)得有經驗(yan)(yan)(yan)(yan)的檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)人員(yuan)(yuan)嚴重缺(que)乏,個(ge)別實(shi)驗(yan)(yan)(yan)(yan)室(shi)新進人員(yuan)(yuan)僅僅通(tong)過幾個(ge)月的培訓就上(shang)(shang)崗(gang)(gang)開展檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)工(gong)作(zuo),這類檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)員(yuan)(yuan)對(dui)檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)不太熟練,對(dui)異常數據缺(que)乏敏感,而又對(dui)這類人員(yuan)(yuan)缺(que)乏有效的監(jian)督,使(shi)(shi)(shi)得他們(men)出現錯(cuo)誤的可能性遠遠超過成熟員(yuan)(yuan)工(gong)。因(yin)(yin)此(ci),使(shi)(shi)(shi)用(yong)經驗(yan)(yan)(yan)(yan)不足而又缺(que)少(shao)監(jian)督的新上(shang)(shang)崗(gang)(gang)檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)員(yuan)(yuan),潛在(zai)風險較大(da)。因(yin)(yin)此(ci),要按(an)照實(shi)驗(yan)(yan)(yan)(yan)室(shi)資質認(ren)定(ding)評審準則的要求,對(dui)使(shi)(shi)(shi)用(yong)在(zai)培人員(yuan)(yuan)應(ying)有足夠(gou)的監(jian)督。實(shi)驗(yan)(yan)(yan)(yan)室(shi)在(zai)使(shi)(shi)(shi)用(yong)新上(shang)(shang)崗(gang)(gang)人員(yuan)(yuan)或(huo)轉崗(gang)(gang)人員(yuan)(yuan)時(shi),除(chu)應(ying)考核上(shang)(shang)崗(gang)(gang)外,檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)時(shi)實(shi)驗(yan)(yan)(yan)(yan)室(shi)監(jian)督員(yuan)(yuan)應(ying)加強監(jian)督,防止出現檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)失誤。


PART 04

檢驗原始記錄不規范缺少可追溯性


檢(jian)驗(yan)原(yuan)始(shi)記錄不(bu)(bu)規范(fan),雖然不(bu)(bu)會改(gai)變(bian)檢(jian)驗(yan)結果,但(dan)(dan)原(yuan)始(shi)記錄是(shi)實驗(yan)室(shi)(shi)檢(jian)驗(yan)過程(cheng)的證(zheng)明材料,一旦實驗(yan)室(shi)(shi)與檢(jian)驗(yan)委托方或相關第三方發(fa)生糾紛時,檢(jian)驗(yan)原(yuan)始(shi)記錄就不(bu)(bu)能起到證(zheng)據(ju)的作用,將實驗(yan)室(shi)(shi)置于危險(xian)境(jing)地。每個實驗(yan)室(shi)(shi)都會按實驗(yan)室(shi)(shi)資(zi)質認定評審(shen)準則的規定,制訂自己的記錄管理(li)規定,但(dan)(dan)個別實驗(yan)室(shi)(shi)不(bu)(bu)能很好地執行,表現在:

NO.1

檢(jian)驗樣品的準備、處置(zhi)和制備記錄不全

檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)(yan)原始(shi)記(ji)錄(lu)(lu)最基本的(de)(de)要(yao)求是將觀(guan)(guan)察到的(de)(de)情(qing)況、數據加(jia)以(yi)記(ji)錄(lu)(lu),這里指的(de)(de)觀(guan)(guan)察到的(de)(de)情(qing)況包括(kuo)從(cong)樣(yang)品(pin)(pin)的(de)(de)準(zhun)(zhun)備、處(chu)置(zhi)和制(zhi)備開(kai)始(shi)到檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)(yan)結束所(suo)觀(guan)(guan)察到的(de)(de)全過(guo)(guo)程(cheng)。實驗(yan)(yan)(yan)(yan)(yan)室(shi)往往對(dui)檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)(yan)過(guo)(guo)程(cheng)觀(guan)(guan)察到的(de)(de)情(qing)況記(ji)錄(lu)(lu)比較詳細(xi),但對(dui)樣(yang)品(pin)(pin)的(de)(de)準(zhun)(zhun)備、處(chu)置(zhi)和制(zhi)備過(guo)(guo)程(cheng),如樣(yang)品(pin)(pin)在恒(heng)溫(wen)恒(heng)濕間(jian)的(de)(de)等溫(wen)過(guo)(guo)程(cheng)、水泥的(de)(de)水養護過(guo)(guo)程(cheng)等過(guo)(guo)程(cheng)記(ji)錄(lu)(lu)不(bu)(bu)全,甚至不(bu)(bu)予(yu)記(ji)錄(lu)(lu)。按照“實驗(yan)(yan)(yan)(yan)(yan)室(shi)記(ji)錄(lu)(lu)應(ying)(ying)及(ji)時、準(zhun)(zhun)確、完(wan)整(zheng)(zheng)”的(de)(de)要(yao)求,檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)(yan)樣(yang)品(pin)(pin)的(de)(de)準(zhun)(zhun)備、處(chu)置(zhi)和制(zhi)備,也(ye)是檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)(yan)的(de)(de)過(guo)(guo)程(cheng),也(ye)應(ying)(ying)及(ji)時、準(zhun)(zhun)確、完(wan)整(zheng)(zheng)地加(jia)以(yi)記(ji)錄(lu)(lu),同(tong)時,對(dui)檢(jian)(jian)(jian)驗(yan)(yan)(yan)(yan)(yan)員要(yao)加(jia)強教(jiao)育(yu),要(yao)有完(wan)整(zheng)(zheng)準(zhun)(zhun)確地記(ji)錄(lu)(lu)原始(shi)記(ji)錄(lu)(lu)的(de)(de)意識。

NO.2

引(yin)用數據缺少可追溯(su)性

檢(jian)(jian)驗(yan)(yan)后(hou)的(de)計算(suan)過(guo)程中(zhong)(zhong)往往需(xu)要(yao)引用(yong)(yong)(yong)一些常數(shu)(shu)或(huo)系數(shu)(shu)。所有(you)引用(yong)(yong)(yong)數(shu)(shu)據都(dou)應(ying)有(you)出處(chu),常數(shu)(shu)主要(yao)是(shi)標(biao)準(zhun)(zhun)中(zhong)(zhong)給出,系數(shu)(shu)則是(shi)在(zai)檢(jian)(jian)驗(yan)(yan)前作(zuo)出標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)后(hou)得出,標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)不(bu)是(shi)做出一次(ci)后(hou)永遠使(shi)(shi)用(yong)(yong)(yong),而是(shi)應(ying)定期做標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian),因此(ci),在(zai)使(shi)(shi)用(yong)(yong)(yong)標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)時(shi),應(ying)在(zai)原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)中(zhong)(zhong)附(fu)上本(ben)次(ci)檢(jian)(jian)測使(shi)(shi)用(yong)(yong)(yong)的(de)標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)或(huo)注明標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)編(bian)號。而有(you)的(de)實(shi)驗(yan)(yan)室在(zai)記(ji)錄(lu)(lu)(lu)(lu)原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)時(shi),并不(bu)將標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)附(fu)在(zai)原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)中(zhong)(zhong)或(huo)在(zai)原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)中(zhong)(zhong)注明出處(chu),使(shi)(shi)其引用(yong)(yong)(yong)的(de)數(shu)(shu)據不(bu)具(ju)有(you)可追溯性。因此(ci),檢(jian)(jian)驗(yan)(yan)人員在(zai)記(ji)錄(lu)(lu)(lu)(lu)檢(jian)(jian)驗(yan)(yan)原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)時(shi),應(ying)將引用(yong)(yong)(yong)的(de)標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)附(fu)在(zai)原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)中(zhong)(zhong),或(huo)將引用(yong)(yong)(yong)的(de)標(biao)準(zhun)(zhun)曲(qu)(qu)(qu)線(xian)的(de)編(bian)號在(zai)原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)中(zhong)(zhong)注明,使(shi)(shi)得原(yuan)始(shi)(shi)記(ji)錄(lu)(lu)(lu)(lu)中(zhong)(zhong)的(de)引用(yong)(yong)(yong)數(shu)(shu)據具(ju)有(you)可追溯性。

NO.3

從筆記本上(shang)轉抄檢驗記錄

檢(jian)(jian)驗(yan)(yan)原(yuan)始(shi)(shi)記(ji)(ji)(ji)錄(lu)(lu)是原(yuan)始(shi)(shi)的觀(guan)察記(ji)(ji)(ji)錄(lu)(lu),應該(gai)在觀(guan)察時實(shi)時記(ji)(ji)(ji)錄(lu)(lu),有些檢(jian)(jian)驗(yan)(yan)員出(chu)于(yu)自己保留數據的原(yuan)因,也有些檢(jian)(jian)驗(yan)(yan)員出(chu)于(yu)保持原(yuan)始(shi)(shi)記(ji)(ji)(ji)錄(lu)(lu)干凈(jing)整(zheng)潔的原(yuan)因,養成了將原(yuan)始(shi)(shi)記(ji)(ji)(ji)錄(lu)(lu)先記(ji)(ji)(ji)錄(lu)(lu)在筆記(ji)(ji)(ji)本上(shang)(shang),過后(hou)再轉抄到格式化(hua)的原(yuan)始(shi)(shi)記(ji)(ji)(ji)錄(lu)(lu)上(shang)(shang)。因此,實(shi)驗(yan)(yan)室有必要(yao)要(yao)求檢(jian)(jian)驗(yan)(yan)人(ren)員將記(ji)(ji)(ji)錄(lu)(lu)及時記(ji)(ji)(ji)錄(lu)(lu)在受控的格式化(hua)的原(yuan)始(shi)(shi)記(ji)(ji)(ji)錄(lu)(lu)表式中,不得先記(ji)(ji)(ji)錄(lu)(lu)在筆記(ji)(ji)(ji)本上(shang)(shang)然后(hou)轉抄到格式化(hua)的原(yuan)始(shi)(shi)記(ji)(ji)(ji)錄(lu)(lu)上(shang)(shang)。


PART 05

檢驗報告的錯誤


檢(jian)(jian)驗(yan)報(bao)告是(shi)檢(jian)(jian)驗(yan)機(ji)構交給客戶的(de)最終(zhong)產品(pin),因此(ci)檢(jian)(jian)驗(yan)報(bao)告質量(liang)也應該是(shi)實驗(yan)室重(zhong)點(dian)關注的(de)內容之(zhi)一。檢(jian)(jian)驗(yan)報(bao)告的(de)錯誤通常有以下(xia)兩種表現(xian):

NO.1

報告(gao)編制錯(cuo)誤

檢驗報告(gao)編(bian)(bian)(bian)制(zhi)人(ren)員(yuan)(yuan)在(zai)編(bian)(bian)(bian)制(zhi)檢驗報告(gao)過程中,經常會因為疏忽出現(xian)輸(shu)入性錯(cuo)誤(wu)(wu)(wu),如:技術(shu)要求(qiu)、實測(ce)數據(ju)、單項判定等文字(zi)或數字(zi)輸(shu)入錯(cuo)誤(wu)(wu)(wu),造成(cheng)(cheng)誤(wu)(wu)(wu)判;委托(tuo)檢驗日(ri)期、樣(yang)品生產(chan)日(ri)期、檢驗日(ri)期等日(ri)期輸(shu)入錯(cuo)誤(wu)(wu)(wu),造成(cheng)(cheng)時(shi)間(jian)邏輯上的(de)(de)(de)問題(ti)。當前,絕大多數實驗室(shi)都采用(yong)業務管理網絡系(xi)統編(bian)(bian)(bian)制(zhi)檢驗報告(gao),對(dui)于時(shi)間(jian)邏輯上的(de)(de)(de)問題(ti),可(ke)以通過在(zai)系(xi)統上進行時(shi)間(jian)關聯提醒(xing)設置(zhi),對(dui)不符合邏輯的(de)(de)(de)時(shi)間(jian)進行提醒(xing),可(ke)有效(xiao)防(fang)止時(shi)間(jian)邏輯錯(cuo)誤(wu)(wu)(wu);對(dui)其(qi)他輸(shu)入性錯(cuo)誤(wu)(wu)(wu),則要通過加強報告(gao)編(bian)(bian)(bian)制(zhi)人(ren)員(yuan)(yuan)和審(shen)核、批(pi)準人(ren)員(yuan)(yuan)的(de)(de)(de)責任心來解決。

NO.2

非(fei)授權人簽字

按照實(shi)驗(yan)(yan)(yan)(yan)室(shi)資(zi)質認定(ding)的要求,檢驗(yan)(yan)(yan)(yan)報(bao)(bao)告(gao)(gao)的簽(qian)發(fa)應由(you)授(shou)權簽(qian)字(zi)(zi)(zi)(zi)人(ren)簽(qian)發(fa)。授(shou)權簽(qian)字(zi)(zi)(zi)(zi)人(ren)應對(dui)檢測技術、結果(guo)評定(ding)、設備維(wei)護校準、記錄和報(bao)(bao)告(gao)(gao)核查程序(xu)等(deng)非常(chang)熟悉,因此,授(shou)權簽(qian)字(zi)(zi)(zi)(zi)人(ren)的授(shou)權簽(qian)字(zi)(zi)(zi)(zi)的能力(li)(li)范(fan)圍(wei)、試(shi)驗(yan)(yan)(yan)(yan)地址(zhi)范(fan)圍(wei)是(shi)有(you)限制的。在(zai)實(shi)驗(yan)(yan)(yan)(yan)室(shi)運(yun)作過程中,部分(fen)非授(shou)權簽(qian)字(zi)(zi)(zi)(zi)人(ren)簽(qian)發(fa)檢驗(yan)(yan)(yan)(yan)報(bao)(bao)告(gao)(gao),或授(shou)權簽(qian)字(zi)(zi)(zi)(zi)人(ren)不了解自己的授(shou)權簽(qian)字(zi)(zi)(zi)(zi)能力(li)(li)范(fan)圍(wei)或試(shi)驗(yan)(yan)(yan)(yan)地址(zhi)范(fan)圍(wei),超越(yue)授(shou)權范(fan)圍(wei)簽(qian)發(fa)檢驗(yan)(yan)(yan)(yan)報(bao)(bao)告(gao)(gao),造(zao)成(cheng)檢驗(yan)(yan)(yan)(yan)報(bao)(bao)告(gao)(gao)的錯誤。這種超越(yue)能力(li)(li)范(fan)圍(wei)批準檢驗(yan)(yan)(yan)(yan)報(bao)(bao)告(gao)(gao),違(wei)反了實(shi)驗(yan)(yan)(yan)(yan)室(shi)標識使用(yong)的規定(ding),會使檢驗(yan)(yan)(yan)(yan)報(bao)(bao)告(gao)(gao)失去法律效力(li)(li)。



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