BS 12312-13:2017 pdf download – Aircraft ground support equipment – Specific requirements Part 13: Lavatory service equipment
Machinery shall comply with the safety requirements and/or protective/risk reduction measures of this clause. In addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for relevant but not significant hazards which are not dealt with by this document.
5.1.2 Stability and strength calculations shall be carried out in accordance with EN 1915-2.
5.1.3 The flushing/rinsing and drainage connections to the aircraft systems shall meet the respective requirements of ISO 17775.
5.1.4 Where the lavatory service equipment is intended to be moved on public roadways, the dimensions, laden mass and other characteristics shall meet all applicable governmental regulations.
NOTE Applicable governmental regulations are dependent on the airport of use.
5.1.5 The ground clearance shall allow without interference the transversing of two surfaces intersecting at an angle of ± 3° (5 %) either in bridging or cresting.
5.1.6 The height of the lavatory vehicle shall allow the servicing of aircraft as intended by the manufacturer (see 6.4). Parts of lavatory vehicles intended to be driven underneath the aircraft should not be more than 1,60 m (63 in) above the ground (see EN 1915-1:2013, Introduction,f) — negotiation).
5.1.7 All parts of the waste and rinsing system shall be made of non-corrosive material.
5.1.8 Self-propelled lavatory vehicles shall be equipped with driver accommodation.
5.1.9 A working light shall be provided, e.g. for connection of hoses to the aircraft during night operations. The design and installation of the light shall conform to EN 1837. The minimum luminous flux of the lamp shall be 250 lm.
5.1.10 Filling and emptying the tanks of the lavatory vehicle should where possible be performed from the ground level without climbing upon the vehicle. Any hose connection, the dump valve and controls shall be accessible from the ground level. Any gauge shall be readable from the ground level and preferably implanted on the same side as the driver accommodation. Where climbing upon the vehicle is necessary, guard-rails shall be installed in accordance with EN 1915-1:2013, 5.13.2.
5.1.11 Specific attention shall be paid to equipment such as traps, hoses, connectors as well as materials and slopes in order to allow easy cleaning with running water and avoid any area where liquids or solid waste can stagnate. Any material used for the driver accommodation (e.g. seat covers) shall be washable by wiping.
5.1.12 The lavatory service equipment shall be fitted with two distinct and separate compartments for respectively clean and dirty personal equipment such as gloves. It shall be equipped with means for washing/disinfecting hands (e.g. provision of an identified location for disinfecting tissues) including a closed bin to collect waste paper.
5.1.13 The operator’s workplace shall have a durable slip-resistant floor surface, with a minimum R11 slip-resistance classification. Slip resistance classification shall be measured in accordance with DIN 51130:2014-02, Table 3.
5.2 Tanks
5.2.1 General The lavatory vehicle shall have separate waste-collection and rinse water tanks.
Separate tanks for disinfectant fluid can be installed. For easy cleaning, tanks shall have the following features:
a) all inside fittings, welds, joints and rivets shall have a smooth finish;
b) cylindrical tank ends shall have a convex shape. Baffles shall be installed inside the tank, if the capacity is over 1 000 l to prevent surge of load while the lavatory vehicle is driven. Tanks shall have at least one inspection hole with a minimum diameter of 400 mm (16 in) in the upper region to facilitate cleaning and inspection. Tanks shall be fitted with static ventilating means, e.g. a venting outlet on top of the tank. Tanks shall be securely fitted to the chassis of the lavatory service vehicle. Relative movement and torsion forces between tank and chassis shall be reduced to a minimum.
5.2.2 Waste tanks A dump valve of at least 100 mm (4 in) diameter shall be fitted to the lowest point of the tank. The control of the dump valve shall be easily accessible and positioned to protect the operator from being splashed with effluent when emptying the tank.
The tanks shall be equipped with a level gauge, easily readable from the workplace.BS 12312-13 pdf download.