Section 690-406 - Transfer of diesel fuel(a) General rule.--Diesel fuel shall be transferred as provided in this section.(b) Pump transfers.--When diesel fuel is transferred by means of a pump and a hose equipped with a nozzle containing a self-closing valve, a powered pump may be used only if:(1) the hose is equipped with a nozzle containing a self-closing valve without a latch-open device; and(2) the pump is equipped with an accessible emergency shutoff switch.(c) Compressed gas prohibition.--Diesel fuel shall not be transferred using compressed gas.(d) Status of diesel engine.--Diesel fuel shall not be transferred to the fuel tank of diesel-powered equipment while the equipment's engine is running.(e) Dry-system design.--Diesel fuel piping systems shall be designed and operated as dry systems.(f) Standards for pipes, valves and fittings.--All piping, valves and fittings shall meet the following requirements: (1) Be capable of withstanding working pressures and stresses.(2) Be capable of withstanding four times the static pressures.(3) Be compatible with diesel fuel.(4) Be maintained in a manner that prevents leakage.(g) Manual shutoff valves.--Vertical pipelines shall have manual shutoff valves installed at the surface filling point and at the underground discharge point.(h) Exposed fuel pipelines.--Unburied diesel fuel pipelines shall not exceed 300 feet in length and shall have shutoff valves located at each end of the unburied pipeline.(i) Horizontal pipeline prohibition.--Horizontal pipelines shall not be used to distribute fuel throughout a mine.(j) Limitation on piping systems.--Diesel fuel piping systems shall be used only to transport fuel from the surface directly to a single underground diesel fuel transfer point.(k) Restrictions related to boreholes.--When boreholes are used, the diesel fuel piping system shall not be located in a borehole with electric power cables.(l) Inspections.--Diesel fuel pipelines located in any shaft shall be included as part of the required examination of the shaft.(m) Location in entries.--Diesel fuel piping systems located in entries shall not be located on the same side of the entry as electric cables or power lines.(n) Trolley-haulage limitations.--Diesel fuel pipelines shall not be located in any trolley-haulage entry, except that they may cross the entry perpendicular if buried or otherwise protected from damage and sealed.(o) Protection.--Diesel fuel piping systems shall be protected to prevent physical damage.2008, July 7, P.L. 654, No. 55, §406, effective in 180 days [ 1/5/2009].