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AMERICAN NATIONAL STANDARD K61.1.1981 7.3 Container Appurtenances 7.5.2 All farm wagons shall be securely 7.3.1 All containers shall be equipped with a attached to the vehicle drawing them by means of fixed maximum liquid level gage. drawbars supplemented by suitable safety chains. 7.3.2 All containers with a capacity exceeding 7.5.3 A farm wagon shall be constructed.so 250 gallons (946 L) shall be equipped with a that it will follow substantially in the path of the pressure gage having a dial graduated from 0- towing vehicle and will prevent the towed farm 400 psi (0-2758 kPa). wagon from whipping or swerving dangerously 7.3.3 The filling connection shall consist of a from side to side. positive shut-off valve in conjunction with either an internal back-pressure check valve or an 7.6 Safety Equipment internal excess flow valve. 7.6.1 All nurse tanks shall bee equipped Aped with 7.3.4 All containers with a capacity exceeding the following safety equipment and features: 250 gallons (946 L) shall be equipped for spray (a) One pair of flexible fitting, hooded venti- loading or with an approved vapor return valve. lation goggles and/or flexible fitted hooded 7.3.5 All vapor and liquid connections,except ventilation goggles and full face shield. pressure relief valves and those specifically (b exempt in 2.6.5,shall be-equipped with approved rub er or other materials impervious to One pair of protective gloves made of excess flow valves or may be fitted with quick- ammonia. closing internal valves which, except during (c) A container of not less than five gallons operating periods, shall remain closed. (18.9 L)of water. (d) Decal(s) depicting step-by-step ammonia 7.3.6 Fittings shall be protected from physical transfer instructions and/or connecting/discon- damage by means of a rigid guard designed to necting instructions for quick couplers. withstand static loading in any direction equal to (e) One decal listing first aid procedures to use twice the weight of the container and lading when contaminated with ammonia. using a safety factor of four (4) based upon the ultimate strength of the material used. If the 8. SYSTEMS MOUNTED ON FARM guard is fully enclosed,the pressure relief valves EQUIPMENT (IMPLEMENTS OF shall be properly vented through the guard. HUSBANDRY) FOR THE 7.3.7 If aliquid withdrawal line is installed in APPLICATION OF'AMMONIA the bottom of a container,the connections thereto, This section applies to systems mounted onfarm including hose,shall not be lower than the lowest equipment and used for the field application of horizontal edge of the farm wagon axle. ammonia. All Basic Rules of Section 2 appy to 7.3.8 Provision shall be made to secure both this section unless otherwise noted. ends of the hose while in transit. 8.1 Design of Containers 7.4 Placarding and Marking of Container 8.1.1 The minimum design for containers shall 7.4.1 There shall appear on each side and on be in accordance with Paragraph 2.2. each end of the container in letters at least two 8.2 Mounting of Containers inches (50.8 mm) high, the words, ANHY- DROUS AMMONIA" and DOT "NON-FLAM- 8.2.1 All containers shall be securely mounted. MABLE GAS" placards. 7.4.2 Slow moving (25 mph (40 kph) or less) 8.3 Container Valves and Appurtenances farm wagons operating on public roads shall be 8.3.1 Fixed maximum liquid level gages shall provided with an emblem consisting of a fluores- be designed to indicate when the container has cent yellow-orange triangle with a dark red been filled to 85%of its water capacity. The dip reflective border. For information regarding tube of this gage must be installed in such a construction, location and mounting of the manner that it cannot be readily removed. emblem, refer to the American Vehicle Identi- fication Emblem (ASAE S276.3; SAE J943), 8.3.2 The filling connection shall consist of a ANSI 13114.1:See also 29 CFR 1910.145(d)(10). positive shut-off valve in conjunction with either an internal back-pressure check valve or an 7.5 Farm Wagons internal excess-flow valve. (Implements of Husbandry) 8.3.3 An excess-flow valve is not required in 7.5.1 Farm wagons (Implements of Hus- the vapor connection, provided the controlling bandry)shall conform with State Regulations. orifice is not in excess of seven sixteenths(7/1s)of 24