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本标准规定了学校健康安全的管理、计划和设计、教学工作环境、服务、教学区域设备、工具和加工有关健康安全的通用要求。本标准适用于普通中小学校、中等职业学校。大学和相关机构可参照执行。
本规范适用于新建、扩建和改建石油库的设计。本规范不适用于下列易燃和可燃液体储运设施:1 石油化工企业厂区内的易燃和可燃液体储运设施;2 油气田的油品站场(库);3 附属于输油管道的输油站场;4 地下水封石洞油库、地下盐穴石油库、自然洞石油库、人工开挖的储油洞库;5 独立的液化烃储存库(包括常温液化石油气储存库、低温液化烃储存库);6 液化天然气储存库;7 储罐总容量大于或等于1200000m<上标3>,仅储存原油的石油储备库。
This Standard sets out safety requirements for the design and construction of portable reinforced plastic ladders. The Standard provides for ladders of two duty ratings, industrial ladders and domestic ladders, which are assigned minimum load ratings.The Standard covers single and multiple-section ladders, multipurpose ladders, stepladders and combination ladders.The Standard does not cover ladder accessories, including ladder levellers, ladder stabilizers or stand-off devices, ladder jacks, or ladder straps or hooks, that may be installed on, or used in conjunction with, ladders.
This European Standard specifies the general design features, requirements and test methods for portable ladders. It does not apply to step stools or ladders for specific professional use such as firebrigade ladders, roof ladders and mobile ladders. It does not apply to ladders used for work on or near live electrical systems or installations. ForThis purpose EN 61478 applies. NOTE For insulating ladders for use on or near low voltage electrical installations in the range below 1000 V a.c or 1500 V d.c. EN 50528 is under preparation.This European Standard is intended to be used in conjunction with EN 131-1. For single or multiple hinge joint ladders EN 131-4 applies.
This European standard specifies the general design features, requirements and test methods for portable ladders. It does not apply to step stools or ladders for specific professional use such as firebrigade ladders, roof ladders and mobile ladders. This European standard is intended to be used in conjunction with EN 131-1.
This European standard gives Reguirements for the design, fabrication, inspection, testing and verification of GRP tanks and vessels with or without thermoplastics lining for strorage or processing of fluids, factory made or site built, non pressurised or pressurised up to 10 bar, for use above ground. The terms vessels and tanks as used in this European Standard include branches up to the point of connection to pipe work or other equipment by bolting and supports, brackets or other attachments bonded directly to the shell. In addition to the definitive requirements, this European Standard also requires the items in Clause 5 to be fully documented. This European Standard covers vessels and tanks subject to temperatures between - 40 degrees C and + 120 degrees C. It is possible that future advances in resin tecnology would allow tanks and vessels to be considered for operating temperatures above + 120 degrees C. Should such a situation arise and manufacturer wishes to take advantage of such developments, then all other requirements of the standard shall be maintained and such tanks and vessels shall only be designed in accordance with the advanced desing method given in 7.9.2 Exluded from this European Standard are:- tanks and vessels for the transport of fluids;- underground storage tanks;- spherical vessels;- vessels and tanks of irregular shape;- tanks and vessels with double containment;- tanks and vessels which are subject to the risk of explosion, or failure of which may cause an emission of radioactivity;- specification for fibre reinforced cisterns of one piece and sectional construction for the storage, above ground, of cold water (see EN 13280:2001).
This standard prescribes rules governing the safe constructioin, design, testing, care and use of portable reinforced plastic ladders of various types and styles. Ladder styles include ladder type step stools, portable extension, step, trestle, sectional