GB/T 21481.2-2008 English PDF

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GB/T 21481.2-2008: Ships and marine technology -- Potable water supply on ships and marine structures -- Part 2: Method of calculation
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Basic data

Standard ID: GB/T 21481.2-2008 (GB/T21481.2-2008)
Description (Translated English): Ships and marine technology -- Potable water supply on ships and marine structures -- Part 2: Method of calculation
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: U13
Classification of International Standard: 47.020.10
Word Count Estimation: 35,386
Date of Issue: 2008-03-03
Date of Implementation: 2008-09-01
Quoted Standard: GB/T 21481.1; ISO 65; ISO 161-1; ISO 274; ISO 1127; ISO 4200; ISO 5620-1
Adopted Standard: ISO 15748-2-2002, IDT
Regulation (derived from): National Standard Approval Announcement 2008 No.3 (Total No.116)
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 standard applies to ships, planning on marine structures and river vessels domestic water supply system, design and layout. This section applies to determine the ship's living water and pressurized water storage device, performance parameters of pumps and other equipment, heaters.

GB/T 21481.2-2008: Ships and marine technology -- Potable water supply on ships and marine structures -- Part 2: Method of calculation

---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.
Ships and marine technology Potable water supply on ships and marine structures Part 2. Method of calculation ICS 47.020.10 U13 National Standards of People's Republic of China GB/T 21481.2-2008/ISO 15748-2.2002 Ships and marine technology on ships and marine structures Domestic water supply - Part 2. Method of calculation (ISO 15748-2.2002, IDT) Posted 2008-03-03 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 1 domestic water consumption Domestic water storage 2 4 5 system components to determine the size of 2 6 flow rate of 2 7 supply pressure 2 8 pressure generation and maintenance of 2 9 water supply pipe diameter 3 10 hot water consumption 3 11 Water Heater 4 12 circulation line and a circulation pump 4 13 examples 5 Appendix A (normative) to calculate the reference value chart 6 Annex B (informative) Calculation Form 17 Annex C (informative) study 19 Annex D (informative) sanitary installation information 30 GB/T 21481.2-2008/ISO 15748-2.2002

Foreword

GB/T 21481 "Ships and marine technology on ships and marine structures - domestic water supply" is divided into two parts. --- Part 1. Planning and design; --- Part 2. Calculation Method. This section GB/T 21481 Part 2, identical with ISO 15748-2.2002 "Ships and marine technology ships and marine knot The structures for domestic water supply - Part 2. Calculation Method "(in English). For ease of use, this section made the following editorial changes. --- "This International Standard" be replaced by "this section"; "." --- With a decimal point instead of a comma as the decimal point, ""; --- Delete international standards foreword. This section of the Appendix A, Appendix B, Appendix C, Appendix D are informative appendices. This part is proposed by the China State Shipbuilding Corporation. This part of the National Standardization Technical Committee Marine boat centralized. This section drafted by. China Shipbuilding Technology and Economy Research Institute. The main drafters of this section. Wang Lei. GB/T 21481.2-2008/ISO 15748-2.2002 Ships and marine technology on ships and marine structures Domestic water supply - Part 2. Method of calculation

1 Scope

This section applies to the ship, a fixed or floating offshore structures and vessels inland domestic water supply system planning, design and Arrangement. This section applies to determine the ship's living water, and pressurized water storage device performance parameters, water heaters, pumps and other equipment. Note. Allow the use of plastic piping in line with the requirements of ISO 15748. However, due to restricted classification society requirements, such tubing has been rarely used. Due to the scope of use Limit, this section does not include plastic piping pressure loss calculations.

2 Normative references

The following documents contain provisions which, through reference GB/T 21481 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. 21481.1 Ships and marine technology on ships and marine structures - domestic water supply - Part 1 GB/T . Planning and design (GB/T 21481.1-2008, ISO 15748-1.2002, IDT) ISO 65 with a threaded in accordance with ISO 7-1 carbon steel ISO 161-1 Thermoplastics fluid delivery pipe nominal diameters and nominal pressures - Part 1. Metric series ISO 274 brass circular cross section dimension Inertial mass ISO 1127 stainless steel tube dimensions, tolerances and unit length ISO 4200 inertial mass table welding seamless pipe size flat head and per unit length ISO 5620-1 ships and offshore structures for drinking water tanks injection fittings - Part 1. General requirements

3 domestic water consumption

3.1 General requirements Domestic water consumption depends on the type of ship, working time (crew and passengers of flight time), the number of domestic water supply points and cruise area. Should refer to Table A. Estimated 1 day domestic water supply. Associated with planned or existing domestic water supply points, respectively, domestic water consumption should refer to Table A. 2 (for cargo ships) and Table A. 3 (for Passenger ships) calculations. Water technology and equipment 3.2 Living water air-conditioning and air humidifiers and other technical equipment to be provided by the manufacturer to determine the information and are included in the provisions of 3.1 Domestic water consumption. Domestic water consumption of 3.3 Service Equipment The following is a reference service life of various types of water equipment, specific values \u200b\u200bshould consult the manufacturer. Living water service equipment should be counted 3.1 The provisions of domestic water. --- Dirt grinder. 20L/min; --- Dishwasher. washing dishes per aircraft need 3L ~ 8L; --- Coffee machine. Hourly 18L ~ 20L; GB/T 21481.2-2008/ISO 15748-2.2002 ......

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