GB 11871-2009 English PDFUS$149.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 11871-2009: Limits of airborne noise emitted by marine diesel engines Status: Valid GB 11871: Historical versions
Basic dataStandard ID: GB 11871-2009 (GB11871-2009)Description (Translated English): Limits of airborne noise emitted by marine diesel engines Sector / Industry: National Standard Classification of Chinese Standard: U44 Classification of International Standard: 47.020.20 Word Count Estimation: 4,410 Date of Issue: 2009-03-09 Date of Implementation: 2009-08-01 Older Standard (superseded by this standard): GB 11871-1989 Quoted Standard: GB/T 9911 Regulation (derived from): Announcement of Newly Approved National Standards No. 2 of 2009 (total 142) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Chinese standard specifies the marine diesel engine bench test of radiation in the air noise A-weighted sound power level limits. This standard applies to marine diesel bench. GB 11871-2009: Limits of airborne noise emitted by marine diesel engines---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Limits of airborne noise emitted by marine diesel engines ICS 47.020.20 U44 National Standards of People's Republic of China Replacing GB 11871-1989 Noise limits for marine diesel engine air radiation Posted 2009-03-09 2009-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordChapter 3 of this standard are mandatory, the rest are recommended. This standard replaces GB 11871-1989 "marine diesel engines emitted airborne noise limits." The main technical differences between standard compared with GB 11871-1989 are as follows. --- Noise limit is given by the table method to the formula, and the value is changed from the nearest whole number to the nearest decimal place; --- For marine diesel engines emitted airborne noise limits have been fixed. The standard proposed by China Shipbuilding Industry Corporation. This standard by the National Standardization Technical Committee diesel marine machinery Technical Committee. This standard was drafted. China Shipbuilding Industry Corporation seventh eleven Institute. The main drafters of this standard. Hanyan Min, Zhu Zhenhai, Ji Wen, Herring, Tao Longhai. This standard replaces the standards previously issued as follows. --- GB 11871-1989. Noise limits for marine diesel engine air radiation1 ScopeThis standard specifies the marine diesel engine air radiated noise in the bench when A sound power level limits. This standard applies to marine diesel engine test bed.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Air noise measurement method GB/T 9911 marine diesel engine radiation3 noise limits3.1 formula Marine diesel engine air radiated noise at rated power and rated speed A LW sound power level should be less than the formula (1) Calculated Numerical calculation results are accurate to one decimal place. LW = 10lg (like r · Pr) + C (1) Where. LW --- air calibration conditions of radiation noise A sound power level limit in decibels [dB (A)]; R --- like calibration value speed, in revolutions per minute (r/min); Pr --- power calibration value, expressed in kilowatts (kW); C --- constant decibels [dB (A)]. When Pr < 736kW, C = 62.0. When Pr≥736kW, C = 64.1 (Like r≤300r/min); or C = 63.0 (like r > 300r/min). 3.2 Measurement Methods This standard applies to the measurement method executed by GB/T 9911 law specified in the project. If the environmental conditions are not met the test of acoustic engineering Requirements law, agreed by both parties also executed according to GB/T 9911 stipulated quasi-engineering method, it should be described in the test report. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 11871-2009_English be delivered?Answer: Upon your order, we will start to translate GB 11871-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 11871-2009_English with my colleagues?Answer: Yes. The purchased PDF of GB 11871-2009_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB 11871-2009?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 11871-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
