標(biāo)識和工藝說明翻譯-中英對照

4.1設(shè)備的標(biāo)識和電纜

儀器，電纜，管材和線材符合說明的要求。 電纜操作員必須將電纜連接緊密地綁緊。

標(biāo)識系統(tǒng)必須符合買方儀器操作標(biāo)準(zhǔn)。

儀器部件將運達有銘牌標(biāo)志的施工現(xiàn)場， 銘牌注明儀器設(shè)備標(biāo)準(zhǔn)的代碼。 承包商負責(zé)給某些應(yīng)用設(shè)備加上標(biāo)簽。鑒定用于施工作業(yè)的預(yù)先校準(zhǔn)和和作業(yè)分配。如果對鑒定有疑問，請聯(lián)系買方。

在全部的現(xiàn)成儀器和控制閥，按照安裝完成后，承包商要求提供、刻上或安裝醒目的塑料銘牌。

4.2校準(zhǔn)和測試

儀器施工承包商負責(zé)對全部儀器操作的校準(zhǔn)和測試。

儀器的預(yù)先校準(zhǔn)和環(huán)路測試將被根據(jù)以下的一般規(guī)則執(zhí)行。

4.2.1.儀器的預(yù)先校準(zhǔn)

現(xiàn)場儀器和閥件將運達現(xiàn)場，并帶有儀器的代碼的銘牌 ( 例如821－pt-111)。 儀器閥件標(biāo)上標(biāo)簽，執(zhí)行閥件行程的預(yù)先校準(zhǔn)。

儀器和閥件的外觀檢查在到貨時必須立即完成。

在檢查儀器的校準(zhǔn)過程中,承包商必須報告任何設(shè)計上的錯誤,( 例如閥門不在保險位置，必須仔細根據(jù)閥件說明進行檢查)，機械損害或者校準(zhǔn)。在任何情況下，檢查必須包括設(shè)備修正和標(biāo)簽的驗收。 除非供應(yīng)商另有說明，制造商必須提供校準(zhǔn)說明，并完成校準(zhǔn)工作， 設(shè)備將根據(jù)說明進行校準(zhǔn)，如果不進行校準(zhǔn)，承包商將通知買方負責(zé)指導(dǎo)機器/ 設(shè)備校準(zhǔn)信息的供應(yīng)商。

全部的現(xiàn)場儀器和控制閥，必須進行校準(zhǔn)的范圍、規(guī)模和適當(dāng)?shù)男袆拥鹊鹊臋z查。測試設(shè)備的精度偏差將根據(jù)測試儀而定；發(fā)送器和控制面板儀器±0.25%和±0.5%地方儀器的偏差。

在校準(zhǔn)期間，D/P發(fā)送器用于化學(xué)作業(yè)使用，如氧氣，避免設(shè)備與油料接觸。

承包商負責(zé)全部設(shè)備測試和校驗的記錄。 另外，在全部儀器檢查完成后，標(biāo)簽上標(biāo)明校驗的日期和簽名。
Marking and Workmanship

4.1 Marking of Equipment and Cables

Instruments, cables, tubes and wires shall be marked in accordance with the instructions. Cable marker shall be tied with strong cable tie.

The marking system shall follow the Purchaser’s instrumentation standard.

Instrument components will arrive at the site with a nameplate showing the code of instrument according to Equipment Standard. The Contractor is responsible for tagging the instrument for certain applications. This identification will be used for the precalibration and distribution of the instruments for the erection. If identification is in doubt, the Purchaser shall be contacted.

On completion of the installation all field instruments and control valves shall have clearly visible plastic nameplates supplied, engraved and installed by the Contractor.

4.2 Calibration and Testing

The Instrument Erection Contractor shall be responsible for calibration and testing of the complete instrumentation.

Precalibration of the instruments and loop tests shall be done in accordance with the following general rules.

4.2.1. Precalibration of Instruments

The field instruments and valves will arrive at the site with nameplates showing the code of the instrument (e.g. 821-pt-111). The instrument valve will be tagged and recalibration of valve stroke shall be performed.

Visual examinations of instruments and valves shall be completed immediately upon receipt.

In checking the calibration of instruments, the Contractor shall report any errors in design, (e.g. valve fail safe position shall be checked carefully according to the valve specification), mechanical damage or calibrication. In all cases checking shall include an inspection for the correct equipment and tagging. Unless otherwise specified by the Supplier, manufacturer's calibration instructions shall be followed and on completion of calibration, the equipment shall perform according to specification, if not, the Contractor shall inform the Purchaser who in turn shall direct the information to the Machinery/equipment Supplier.

The checking of the calibration ranges, scales, proper actions etc. shall be done for all field instruments and control valves. The accuracy of test equipment shall be in accordance with the tested instruments, generally ± 0.25% for transmitters and panel instruments and ± 0.5% for local gauges.

During the calibration carry out for those D/P transmitters which are used in chemical services, like oxygen, an oil shall be avoid from contact with this equipment.

The Contractor is responsible for keeping a record of all equipment tested and calibrated. In addition, a tag, complete with the date and signature of the calibrated shall be secured to all instruments which have been checked.

5. Check-Out and loop tests

The Contractor is responsible for carrying out complete functional loop tests after the installation of instrumentation. The check-out and loop tests shall follow the given system order and include the following main tasks.

2014.8.2