This standard specifies the safety requirements for legs and rams when used as specified by the manufacturer or his authorised representative. Examples covered by the standard include legs, support rams and rams with their mechanical extensions, internal valves and safety devices, seals, hydraulic connections (up to the first hose or Type B valve, see Part 3) and their lifting points but excluding protective pipes and gaiters, external valves and hydraulic and electrohydraulic control systems. NOTE Some components are dealt with in other parts of this standard. This standard applies to legs, support rams and rams used at ambient temperatures from -10 °C to 60 °C. This standard identifies and takes account of: Possible hazards which may be caused by the operation of legs, support rams and rams; Areas and operating conditions which may create such hazards; Hazardous situations which may cause injury or may be damaging to health. This standard describes methods for the reduction of these hazards. A list of hazards covered appears in clause 4. This standard is applicable to all legs, support rams and rams placed on the market for the first time and which are manufactured after the date on which this standard was published. This European standard does not establish the additional requirements for: Specially corrosive environments; Hazards occurring during construction, transportation, decommissioning; Earthquake.
EN 1804-2:2001+A1:2010 Referenced Document
EN 10002-1:2001 Metallic Materials - Tensile Testing - Part 1: Method of Test at Ambient Temperature
EN 10045-1:1989 Metallic materials; Charpy impact test; part 1: test method
EN 1050:1996 Safety of Machinery - Principles for Risk Assessment
EN 1804-2:2001 Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 2: Power set legs and rams (Incorporates Amendment A1: 2010)*， 2024-04-20 Update
EN 1804-3:2006 Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 3: Hydraulic control systems (Incorporates Amendment A1: 2010)
EN 287-1:2004 Qualification test of welders - Fusion welding - Part 1: Steels Incorporating Corrigendum August 2004; Includes Amendment A2:2006
EN 288-1:1992 Specification and qualification of welding procedures for metallic materials; part 1: general rules for fusion welding
EN 288-2:1992 Specification and approval of welding procedures for metallic materials; part 2: welding procedure specification for arc welding
EN 288-3:1992 Specification and Approval of Welding Procedures for Metallic Materials - Part 3: Welding Procedure Tests for the Arc Welding of Steels Includes Amendment A1: 1997
EN 292-2:1991 Safety of machinery; basic concepts, general principles for design; part 2: technical principles and specifications
EN 1804-2:2001+A1:2010 history
2020EN 1804-2:2020 Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 2: Power set legs and rams
2010EN 1804-2:2001+A1:2010 Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 2: Power set legs and rams
2001EN 1804-2:2001 Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 2: Power set legs and rams (Incorporates Amendment A1: 2010)