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