{"id":425235,"date":"2024-10-20T06:55:45","date_gmt":"2024-10-20T06:55:45","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-218052023\/"},"modified":"2024-10-26T13:03:32","modified_gmt":"2024-10-26T13:03:32","slug":"bs-en-iso-218052023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-218052023\/","title":{"rendered":"BS EN ISO 21805:2023"},"content":{"rendered":"

This document gives guidelines for fulfilling the requirements contained in ISO 6183:2022, 6.4.1 and 7.4.1 and ISO 14520?1:2023, 5.2.1 h) and 5.3 h), in respect to over- and under-pressurization venting and post-discharge extract. It considers the design, selection and installation of vents to safeguard the structural integrity of enclosures protected by fixed gaseous extinguishing systems and the post-discharge venting provisions where used.<\/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\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nEuropean foreword
Endorsement notice <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Symbols and abbreviated terms <\/td>\n<\/tr>\n
11<\/td>\n5 Use and limitations <\/td>\n<\/tr>\n
12<\/td>\n6 Safety
6.1 Structural safety
6.2 Personnel safety
7 System design \u2014 Pressure-relief venting
7.1 General <\/td>\n<\/tr>\n
13<\/td>\n7.2 Extinguishant characteristics
7.2.1 Positive and negative pressurization
7.2.2 Pressure graphs <\/td>\n<\/tr>\n
14<\/td>\n7.3 Enclosure characteristics
7.4 Pressure-relief vent paths <\/td>\n<\/tr>\n
15<\/td>\n7.5 Types of pressure-relief vents
7.5.1 General
7.5.2 Gravity vents
7.5.3 Counterweighted flap vent <\/td>\n<\/tr>\n
16<\/td>\n7.5.4 Electrically-operated vents
7.5.5 Pneumatically-operated vent
7.5.6 Vent accessories <\/td>\n<\/tr>\n
17<\/td>\n7.6 Pressure-relief vent characteristics
7.6.1 Vent efficiency <\/td>\n<\/tr>\n
18<\/td>\n7.6.2 Minimum opening pressure
7.6.3 Minimum closing pressure
7.6.4 Fire rating
7.7 Vent location and mounting
7.7.1 Vent location <\/td>\n<\/tr>\n
19<\/td>\n7.7.2 Vent mounting <\/td>\n<\/tr>\n
20<\/td>\n7.8 Pressure-relief vent area calculations
7.8.1 Use of agent-specific formulae <\/td>\n<\/tr>\n
21<\/td>\n7.8.2 Vent area requirement (non-liquefiable gases) <\/td>\n<\/tr>\n
24<\/td>\n7.8.3 Vent area requirement carbon dioxide
7.8.4 Vent area requirements (liquefiable gases) <\/td>\n<\/tr>\n
30<\/td>\n7.8.5 Leakage
7.9 Cascade venting calculations <\/td>\n<\/tr>\n
31<\/td>\n7.9.1 Example calculation 3: Cascade venting calculations for IG-541 (peak discharge) <\/td>\n<\/tr>\n
32<\/td>\n7.9.2 Cascade vent arrangements <\/td>\n<\/tr>\n
33<\/td>\n7.9.3 Venting into adjacent enclosures <\/td>\n<\/tr>\n
35<\/td>\n8 System design \u2014 Post-discharge venting
9 Acceptance
10 Service and maintenance <\/td>\n<\/tr>\n
37<\/td>\nAnnex A (informative) Development of agent-specific formulae for liquefiable gases <\/td>\n<\/tr>\n
42<\/td>\nAnnex B (informative) Method for development of agent-specific formulae for liquefiable gases <\/td>\n<\/tr>\n
44<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Guidance and recommendations on design, selection and installation of vents to safeguard the structural integrity of enclosures protected by gaseous fire-extinguishing systems<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n46<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":425244,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[237,2641],"product_tag":[],"class_list":{"0":"post-425235","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-220-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/425235","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\/425244"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=425235"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=425235"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=425235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}