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link 10.06.2009 9:42 |
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Subject: above the operating level в данном контексте:Valves and devices shall be located in an ergonomically correct way in respect to the mainte-nance platforms considering that maintenance shall be possible without removing the valves from the pipe. Where the load to be lifted exceeds 15 kg provision (e.g. lifting beam for a tacle) shall be made for the use of lifting equipment. The valves shall be well accessible for mainte-nance and operation. The larger valves (i.e. boiler safety valves) must allow for the use of a crane of a hoist during maintenance. The valve handwheel shall not be higher than 700 mm above the operating level. |
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imho above the operating FLOOR level |
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