GB/T 4795-2023 English PDF

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GB/T 4795-2023: Marine bilge water treatment device
Status: Valid

GB/T 4795: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4795-2023	569	Add to Cart	5 days	Marine bilge water treatment device	Valid
GB/T 4795-2009	799	Add to Cart	4 days	15 ppm bilge separators	Obsolete
GB/T 4795-1999	599	Add to Cart	4 days	Oily water separating equipment for machinery space bilges of ships	Obsolete
GB/T 4795.1-1984	RFQ	ASK	3 days	Oiled water separating equipment--Rated capacity series	Obsolete

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Basic data

Standard ID: GB/T 4795-2023 (GB/T4795-2023)
Description (Translated English): Marine bilge water treatment device
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: U25
Classification of International Standard: 47.020.90
Word Count Estimation: 30,382
Date of Issue: 2023-08-06
Date of Implementation: 2024-03-01
Older Standard (superseded by this standard): GB/T 4795-2009
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 4795-2023: Marine bilge water treatment device

---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.
ICS 47.020.90 CCSU25 National Standards of People's Republic of China Replace GB/T 4795-2009 Marine bilge water treatment device Published on 2023-08-06 2024-03-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 4795-2009 "15ppm Bilge Water Separator". Compared with GB/T 4795-2009, except for structural adjustments and In addition to editorial changes, the main technical changes are as follows. ---The name of test liquid A is changed to residual marine fuel oil, and the name of test liquid B is changed to marine distilled fuel oil (see 5.5.2.1,.2009 version 6.1.2.1); ---The relative densities of test liquid A, test liquid B, and test fresh water are changed to density (see 5.5.2.1, 6.1.2.2 of the.2009 edition); ---The accuracy level of flow meters, pressure gauges and thermometers is changed to level 1.6 (see 5.5.1.9~5.5.1.11, 6.1.1.9~ of the.2009 edition 6.1.1.11); --- Added requirements and test methods for the insulation resistance test, withstand voltage test, and power supply fluctuation test of the separator (see 4.3.3~ 4.3.5, 5.8~5.10); ---Added the environmental adaptability requirements and test methods of separators (see 4.4.1~4.4.4, 5.14~5.18). Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed and coordinated by the National Marine Machinery Standardization Technical Committee (SAC/TC137). This document was drafted by. Research Institute 704 of China State Shipbuilding Corporation, China Ship Research and Design Center. The main drafters of this document. Zhang Lei, Wang Guodong, Jiang Yijun, Pan Siyu, Zhang Shuangdao, Shao Xiaohua, Li Qiucheng, and Li Weiguang. The previous versions of this document and the documents it replaces are as follows. ---First published as GB/T 4795-1999 in.1999, first revised in.2009; ---This is the second revision. Marine bilge water treatment device

1 Scope

This document specifies the bilge water separator (hereinafter referred to as the separator) and the bilge water separator (hereinafter referred to as the separator) in the marine bilge water treatment device (hereinafter referred to as the treatment device). Requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. for water alarm devices (hereinafter referred to as alarm devices). This document is applicable to the design, manufacturing and acceptance of treatment devices with a rated processing capacity of 0.1m3/h~50m3/h.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 191 Packaging, storage and transportation pictorial mark GB/T 2423.1 Environmental testing of electrical and electronic products Part 2.Test methods Test A. Low temperature GB/T 2423.2 Environmental testing of electrical and electronic products Part 2.Test methods Test B. High temperature GB/T 2501 Marine flange connection dimensions and sealing surfaces GB/T 6994 Definition and general provisions for ship electrical equipment GB/T 11037 Strength and tightness test methods for marine boilers and pressure vessels CB/T 3869 Technical specifications for tubular electric heaters for marine oil and wastewater separation devices CB/T 4196 Marine flange connection dimensions and sealing surfaces ISO 9377-2.2000 Determination of water quality hydrocarbon oil index Part 2.Solvent extraction method and gas chromatography method (Water chromatography)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 isokinetic sampling isokinetic sampling The sample enters the sampling pipe at the average flow rate of the outlet pipe. Sampling can be achieved by controlling the sampling time. The sampling time is Calculated by formula (1). t= VR2 Qr2 (1) In the formula. t---The value of the sampling time, the unit is seconds (s); V---the value of the sample volume, in milliliters (mL); R---The value of the radius of the water pipe of the device, in millimeters (mm); Q---The value of the flow rate in the water pipe of the device, in milliliters per second (mL/s); r---The value of the inner radius of the sampling tube, in millimeters (mm), r=3mm. ......

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