{"id":244408,"date":"2024-10-19T16:03:25","date_gmt":"2024-10-19T16:03:25","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-612852015\/"},"modified":"2024-10-25T11:02:27","modified_gmt":"2024-10-25T11:02:27","slug":"bs-en-612852015","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-612852015\/","title":{"rendered":"BS EN 61285:2015"},"content":{"rendered":"

This International Standard describes the physical requirements for the safe operation of the process analyser measuring system installed in an analyser house (AH) in order to ensure its protection against fire, explosion and health hazards. This standard applies for analyser houses with inner and\/or external potential explosive atmospheres and it applies to hazards caused by toxic substances or asphyxiant gases. (Refer to national guidelines on toxic hazards.)<\/p>\n

This standard does not address facilities where solids (dust, powder, fibres) are the hazard.<\/p>\n

This standard does not seek to address all functional safety issues related to analyser houses.<\/p>\n

Clause 4<\/span> addresses the location of the AH and connection within the process plant areas.<\/p>\n

Clause 5<\/span> addresses the design, construction and layout of the AH. It does not address parts of the analyser measuring system installed in other locations such as sample conditioning rooms (SCR) or switchgear rooms.<\/p>\n

Clause 6<\/span> addresses measures for reducing the danger of explosion for AHs while permitting maintenance of equipment with the power on and the case open.<\/p>\n

For most fluids, the major constraint is that the concentration of vapours, which are toxic for personnel, is lower than the lower explosive (flammable) limit (LEL) (see Clause 7<\/span>).<\/p>\n

Using n-Pentane as an example, the LEL is 1,4 % or 14 000 \u00d7 10 \u20136<\/sup>, the level immediately dangerous to life or health (which is the maximum level from which a worker could escape within 30 min without any escape-impairing symptoms or any irreversible health effects) is only 0,5 % or 5 000 \u00d7 10 \u20136<\/sup>.<\/p>\n

Clause 7<\/span> addresses those measures for protecting personnel from materials in the atmosphere of AHs that are hazardous to health.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
6<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
10<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
13<\/td>\n4 Location of AHs and connection within the process plant areas
4.1 General
4.2 Response time
4.3 Utilities
4.4 Safety
4.4.1 Location
4.4.2 Escape
4.4.3 Area classification
4.4.4 Peripheral hazards
4.5 Access <\/td>\n<\/tr>\n
14<\/td>\n5 Design, construction and layout of AHs
5.1 General
5.2 General requirements
5.3 Dimensions and layout
5.4 Structural requirements
5.4.1 Construction materials <\/td>\n<\/tr>\n
15<\/td>\n5.4.2 Walls
5.4.3 Floors and foundation
5.4.4 Doors
5.4.5 Windows
5.4.6 Roof
5.5 Equipment
5.5.1 Lighting
5.5.2 Communications
5.5.3 Piping, tubing and valves <\/td>\n<\/tr>\n
16<\/td>\n5.5.4 Utilities
5.5.5 Fire extinguishers
5.5.6 Ventilation <\/td>\n<\/tr>\n
17<\/td>\n5.5.7 Temperature
5.6 Labelling\/instructions\/documentation
5.6.1 Entrance
5.6.2 Alarms
5.6.3 Safety procedures <\/td>\n<\/tr>\n
18<\/td>\n5.6.4 Additional data
6 Explosion protection of AHs
6.1 General
6.2 General requirements
6.3 Protection of AHs against explosion hazards by means of artificial ventilation
6.3.1 Classification <\/td>\n<\/tr>\n
19<\/td>\n6.3.2 Requirements for AHs where the explosion hazard originates externally
6.3.3 Requirements for AHs where the explosion hazard originates from internal gases or vapours <\/td>\n<\/tr>\n
20<\/td>\n6.3.4 Requirements for AHs where the explosion hazard originates from internal liquids <\/td>\n<\/tr>\n
21<\/td>\n6.3.5 Requirements for AHs where the explosion hazard originates from any combination of the above
6.4 Protection of AHs against explosion hazards by means of natural ventilation
6.4.1 General
6.4.2 Ventilation requirements <\/td>\n<\/tr>\n
22<\/td>\n6.4.3 Heating requirements
6.4.4 Gas detectors
7 Measures to prevent health hazards to personnel in AHs
7.1 General
7.2 Guidelines
7.3 General requirements <\/td>\n<\/tr>\n
23<\/td>\n7.4 Safety measures <\/td>\n<\/tr>\n
24<\/td>\n7.5 External hazards
7.6 Additional measures for abnormal working conditions <\/td>\n<\/tr>\n
25<\/td>\n7.7 Labelling\/instructions\/documentation <\/td>\n<\/tr>\n
26<\/td>\nAnnex A (normative) Leakage risk of modules in the AH
A.1 General
A.2 Modules with negligible leakage risk
A.3 Modules with limited leakage risk
A.3.1 General <\/td>\n<\/tr>\n
27<\/td>\nA.3.2 Guidance for evaluating modules
Tables
Table A.1 \u2013 Module evaluation <\/td>\n<\/tr>\n
28<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Industrial-process control. Safety of analyzer houses<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2015<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":244413,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-244408","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/244408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/244413"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=244408"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=244408"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=244408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}