QC/T 768-2022 English PDF (QCT768-2022)
QC/T 768-2022 English PDF (QCT768-2022)
QC/T 768-2022: Coach toilet
AUTOMOBILE INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
CCS T 24
Replacing QC/T 768-2006
ISSUED ON: APRIL 08, 2022
IMPLEMENTED ON: OCTOBER 01, 2022
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 6
1 Scope ... 8
2 Normative references ... 8
3 Terms and definitions ... 9
4 Classification and basic configuration ... 10
5 General requirements ... 11
6 Performance requirements ... 14
7 Test method ... 17
8 Inspection rules ... 20
9 Labeling, packaging, transportation, storage ... 21
This document stipulates the classification, basic configuration, general requirements, test methods, inspection rules and marking, packaging, transportation, storage of coach toilets.
This document applies to toilets used on coaches.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, for dated references, only the version corresponding to the date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document. GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 1236 Industrial fan - Performance testing using standardized airways GB/T 2423.10-2019 Environmental testing - Part 2: Test methods - Test Fc: Vibration (sinusoidal)
GB/T 2423.22-2012 Environmental testing - Part 2: Tests methods - Test N: Change of temperature
GB/T 4892 Dimensions of rigid rectangular transport packages
GB/T 6461 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates - Rating of test specimens and manufactured articles subjected to corrosion tests
GB/T 10125-2021 Corrosion tests in artificial atmospheres - Salt spray tests GB/T 13095 Toilet unit
GB/T 17729 Hygienic standard for the air quality inside long distance coach GB/T 18655-2018 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers
GB/T 21437.2-2008 Road vehicles - Electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only GB/T 21437.3-2012 Road vehicles - Electrical disturbances from conduction and coupling - Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
GB/T 28370 Detect methods for the air quality inside long distance coach GB/T 30512 Requirements for prohibited substances on automobiles
GB/T 33014.2-2016 Road vehicles - Component test methods for
electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 2: Absorb-lined shielded enclosure
GB/T 33014.4-2016 Road vehicles - Component test methods for
electrical/electronic disturbances from narrowband radiated electromagnetic energy - Part 4: Bulk current injection (BCI)
GB 38262 Flammability of interior materials for buses
QC/T 414 Design rule of color and type code for automotive cables
QC/T 29106 Technical specification of automobile wire harness
ISO 10605:2008 Road vehicles - Test methods for electrical disturbances from electrostatic discharge
ISO 11452-8:2015 Road vehicles - Component test methods for electrical
disturbances from narrowband radiated electromagnetic energy - Part 8: Immunity to magnetic fields
VDA 270 Test method for odor test of non-metallic materials
VDA 275 Test method for formazan content of non-metallic materials
VDA 277 Test method for volatile organic compounds in non-metallic materials 3 Terms and definitions
The following terms and definitions apply to this document.
Fresh water tank
Containers for storing clean water in coach toilets.
two types: electric control waste water discharge and manual waste water discharge. 4.1.4 According to the way of toilet flushing, there are two types of toilets: manual flushing and automatic induction flushing.
4.2 Basic configuration
The basic configuration of the toilet shall include:
a) Sitting (squatting) toilet;
b) Waste water discharge device: Waste water valve, waste water tank, waste container, waste water discharge button or pedal;
c) Water purification device: Clean water tank, water pump, water inlet pipe, water inlet pipe connector, faucet and other switches;
d) Hand washing device: Hand washing sink, hand sanitizer container;
e) Tissue storage rack (box);
f) Forced exhaust;
g) Lighting devices: Lamps, lines, switches, safety devices, etc.;
h) Alarm device: Safety (SOS) alarm, clean (or waste) water tank water level alarm, smoke alarm, high temperature alarm;
i) Safety handrails (inner and outer);
j) Door locks;
k) Mirrors (safety glass shall be used);
l) Use status identification;
m) Control device: Integrated circuit board module, induction probe;
n) Coat hooks (with safety protection functions such as rebound or folding); o) If it is used in an alpine area, it is necessary to add a heating device. At the same time, the fresh and waste water tanks need to be equipped with a heating device and the surface needs to be thermal insulated.
5 General requirements
5.1 The electric-plating and painting surfaces of the metal parts in the toilet shall be smooth without falling off; the weld seams shall be uniform; there shall be no defects such as rust, scars or pores.
5.2 The exposed parts of the toilet body and all parts shall have smooth surface, uniform color, neat edge, smooth transition of rounded corners, without defects such as cracks, bubbles, burrs, wrinkles, scratches. There shall be no sharp corners, sharp edges or other structures or defects that are likely to cause human injury in the toilet. 5.3 Floor drains shall be installed on the toilet floor, which shall be non-slip and easy to clean.
5.4 There shall be a shock-absorbing sealing device around the toilet door, which cannot be opened automatically when it is closed.
5.5 Whether the toilet door lock is locked or not, it shall be able to open the door from the inside of the toilet; at the same time, it can be opened from the outside, in case of emergency.
5.6 The installation and use of electrical appliances shall meet the requirements that during the coach roll test, the parts that are not in contact under normal use shall not be touched, damaged or displaced.
5.7 The insulation and flame retardancy of the wires shall meet the requirement, that the wire harnesses in the coach engine compartment and near other heat sources shall use flame-retardant wires, which has a temperature resistance of not less than 125 °C. The wire harness at other parts shall use the flame-retardant wire, which has a temperature resistance of not less than 100 °C. The wire color and model specifications shall meet the requirements of QC/T 414. The wire harness performance shall meet the relevant requirements of QC/T 29106.
5.8 The minimum volume of the clean water tank and waste water tank in the toilet shall be able to meet the requirements of the passenger to go to the toilet, during the operation of the coach. It can be calculated as follows:
Clean water tank volume ≥ Rated number of passengers x 1.5 L
Waste water tank volume ≥ Rated number of passengers x 2.1 L
5.9 The components used in the toilet shall meet the requirements for prohibited substances, in GB/T 30512.
5.10 Refer to Table 1 for the internal dimensions of the toilet. See Figure 1 for the location.
6.7 Corrosion resistance
6.7.1 Ventilation window frame for toilet: After the test according to 7.8.1, the width of corrosion on one side of the crossed part of the coating is ≤ 2 mm; the number of rust points at the non-crossed part is ≤ 5/dm; the maximum width of each corrosion point is mm. The maximum number of blisters at the uncrossed place is ≤ 5/dm2; the maximum width of each blister is ≤ 1 mm.
6.7.2 Faucet in the toilet: After the test according to 7.8.2, the surface after the test shall be evaluated according to GB/T 6461: ≥ 9 grades; the number of blisters at the uncrossed area is ≤ 5 pieces/dm; the maximum width of each blister is ≤ 1 mm. 6.8 Air exchange rate
The toilet shall have a forced ventilation function, when it is powered on. The air exchange rate when the occupants go to the toilet is ≥ 85 m3/h (the air exchange rate in the toilet is about 1.5 times per minute); the air exchange rate is ≥ 50 m3/h when it is not occupied (the air exchange rate in the toilet is about 1 time per minute). The air outlet of the forced air exhaust device shall be connected to the outside of the compartment, meanwhile the air outlet shall have a shroud device.
6.9 Leakage prevention
6.9.1 The blowdown device shall have no leakage. The sliding valve shall have an automatic return function.
6.9.2 Pneumatic components and pipelines used in toilets shall meet the working air pressure requirements of coach. There shall be no air leakage, under normal working conditions.
6.9.3 The water purification and hand-washing devices in the toilets shall have no leakage.
6.10 Flame retardancy requirements
The flame retardancy of materials, such as interior panels, skins, exterior top and side decorations, which are used in toilets, shall meet the requirements of GB 38262. 6.11 Air quality in toilet
The air quality in the toilet shall comply with the provisions of GB/T 17729. 6.12 Volatile organic compounds of non-metallic materials
For all non-metallic materials (except fiberglass, wood, aluminum-plastic panels) in the toilet located in the passenger compartment, when the material specifications meet one of the conditions defined in a), b), c), the limit value of volatile organic compounds shall comply with the requirements of Table 3. The materials used for toilets, which are 7.1.2 Test conditions: It shall comply with the provisions of GB/T 13095. 7.2 General requirements
7.2.1 Appearance requirements shall comply with the provisions of GB/T 13095. 7.2.2 Dimensional inspection shall be made by measuring tape and other equipment. 7.3 Basic performance
See Table 5 for the inspection method of basic performance.
7.4 Strength of toilet cabinet, floor, toilet seat
7.4.1 Strength of cabinet and floor
Test according to the provisions of GB/T 13095.
7.4.2 Strength of the toilet seat
The test is carried out by placing the counterweight objects, which have load weight ≥ 130 kg evenly distributed, for 30 minutes.
Test according to the provisions of GB/T 13095.
Apply a pull force of 500 N vertically to the wall, on which the handrail is installed, using a push-pull force gauge. Keep it for 1 min.
7.7 Environmental adaptability
7.7.1 High and low temperature test
According to the requirements of GB/T 2423.22-2012, the test room temperature is 25 °C ± 5 °C; the high temperature is 80 °C; the low temperature is -40 °C; the exposure duration is 2 hours; the conversion time is ≤ 45 minutes; the number of test cycles is 2 times.
7.7.2 Vibration test
According to the requirements of GB/T 2423.10-2019, the acceleration is 0.9 g; the vibration frequency is 5 Hz ~ 150 Hz; the frequency sweep rate is 1 oct/min; it shall finish 30 cycles.
7.8 Corrosion resistance
7.8.1 Ventilation window frame in toilet: According to the requirements in 5.4 of GB/T 10125-2012, carry out copper accelerated acetic acid salt spray for 168 h. 7.8.2 Faucet in the toilet: According to the requirements in 5.4 of GB/T 10125-2012, carry out copper accelerated acetic acid salt spray for 24 hours.
7.9 Ventilation volume
Test according to the provisions of GB/T 1236.
7.10 Leakage prevention
7.10.1 Sliding valve test
The sliding valve on the upper part of the waste water tank is in a sealed closed state. Add clean water to the lower edge of the upper plane of the urinal. Keep it for 10 minutes. Check whether the seal of the sliding valve is in good condition. Fill the waste water tank with water. Keep it for 10 minutes. Check whether the waste water tank and the lower sliding valve are well sealed.
7.10.2 Pneumatic components and piping test
22.214.171.124 After the installation of the pneumatic components and pipelines in the toilet is completed, seal the pipelines; pressurize the pipelines to 1 MPa; keep the pressure for 10 minutes; check all joints and components of the pipelines for leakage. 126.96.36.199 Keep the pipeline's pressure at 0.4 MPa. Open and close the switch repeatedly. Check whether the components and the sliding valve are working normally. 7.10.3 Test of water purification and hand washing device and pipeline
188.8.131.52 After the toilet's water inlet pipe joint is installed, fill the clean water tank with clean water. Discharge the air in the pipeline. Close each water outlet. Start the water pump and run it for 3 min ~ 5 min. Check whether there is leakage for all water circuits and joints.
184.108.40.206 In the normal working state, turn on the switch of each water outlet respectively, to check whether each water outlet works normally.
7.11 Flame retardancy test
Test according to the provisions of GB 38262.