BS EN 81-21:2018 pdf free.Safety rules for the construction and installation of lifts – Lifts for the transport of persons and goods – Part 21: New passenger and goods passenger lifts in existing building.
The main changes with respect to the previous edition (EN 81-21:2009+A1:2012) are as follows:
— updating of references and their associated requirements with regard to EN 81-20:20 14;
— removal of duplicated text in reference to the requirements for refuge spaces expressed in
EN 81-20:2014;
— replacement of Annex ZA with regard to the commission mandate M/549/C(2016) 5844 Final and Directive 2014/33/EU.
This standard is part of the EN 81 series of standards “Safety rules for the construction and installation of
lifts”. This is the second edition.
This document is a type C standard as stated in EN ISO 12100.
When provisions of this type C standard are different from those stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisions of this type C standard.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this document.
Where one or several requirements in EN 81-20:2014 cannot be fulfilled, due to reasons such as the constraints of the structure of the existing building, the corresponding requirements in this European Standard apply. According to section 2.2 of Annex I to the Lifts Directive, the application of alternative measures to prevent the risk of crushing above and underneath the lift car is restricted to installations where the requirement for free space or refuge is impossible to fulfil and may be subject to prior approval by national authorities.
The main concern dealt with in this standard is the reduction of top and pit clearances that may be required due to site conditions. The adopted principle of safety is based on two levels of achievement:
first by means of an electrical stopping of the lift car, then by means of a mechanical stopping of the lift car.
When drafting this standard, it has been considered for reduced overhead and pit the following:
a) Risk reduction measures that rely solely on operations in compliance with procedures are considered as not acceptable, except in a few situations in which mistake-proof solutions are not available (e.g. some activities in repair and installation in which safety devices cannot be operational);
b) The risk reduction measures are automatically (without any intervention) activated, or may be manually activated if mistake-proof-by-design, or a combination of both is used.
This European Standard specifies the safety rules related to new passenger and goods/passenger lifts permanently installed in existing buildings where in some circumstances due to limitations enforced by building constraints, some requirements of EN 81-20:20 14 cannot be met.
This European Standard addresses a number of these constraints and gives requirements for alternative solutions. It will be read and applied in conjunction with the European Standard
EN 81-20:2014.
This European Standard covers:
— either the construction and installation of one or more complete new lift(s) including new well and machinery spaces in an existing building; or
— the replacement of one or more existing lift(s) by new ones in existing well(s) and machinery spaces.
This European Standard does not cover:
— replacement or modifications of some parts to a lift already installed;
— other applications outside of the scope of EN 81-20:2014.BS EN 81-21:2018 pdf free download.