Shipbuilding and marine structures. Rungs for dog-step ladders Ingestion-build-81500 ethylene propylene

ethylene propylene

which is longer than the normal sludge retention time (25 to 30 days) in anaerobic digesters

commercial or non-commercial

The surface temperature to be maintained above the dew point has been changed

The document addresses specifics

Shipbuilding and marine structures. Rungs for dog-step ladders Ingestion-build-81500 ethylene propylene1 Scope This International Standard specifies the types, dimensions, material, manufacture and designation of rungs for dog step ladders; it also lays down the installation and composition of single rungs forming a dog step ladder. Dog step ladders, formed from single rungs, may only be used where fixed vertical ladders with stringers1) cannot be installed. Dog step ladders fitted to the ships structure should serve only to bridge minor differences in