{"id":180247,"date":"2024-10-19T11:15:17","date_gmt":"2024-10-19T11:15:17","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/nfpa-270-2018\/"},"modified":"2024-10-25T03:32:46","modified_gmt":"2024-10-25T03:32:46","slug":"nfpa-270-2018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/nfpa\/nfpa-270-2018\/","title":{"rendered":"NFPA 270 2018"},"content":{"rendered":"

This test method provides a means of measuring smoke obscuration of essentially flat materials, products, or assemblies (including surface finishes) up to 25mm thick, when exposed to specified levels of thermal irradiance in a single closed chamber.<\/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
2<\/td>\nImportant Notices and Disclaimers <\/td>\n<\/tr>\n
3<\/td>\nAdditional Notices and Disclaimers <\/td>\n<\/tr>\n
7<\/td>\nChapter 1 Administration
1.1 Scope.
1.2 Purpose. (Reserved)
1.3 Application. <\/td>\n<\/tr>\n
8<\/td>\n1.4 Units and Formulas.
Chapter 2 Referenced Publications
2.1 General.
2.2 NFPA Publications. (Reserved)
2.3 Other Publications. <\/td>\n<\/tr>\n
9<\/td>\n2.4 References for Extracts in Mandatory Sections. (Reserved)
Chapter 3 Definitions
3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.
Chapter 4 Test Apparatus
4.1 General.
4.2 Test Chamber. <\/td>\n<\/tr>\n
11<\/td>\n4.3 Sample Support and Heating Arrangements. <\/td>\n<\/tr>\n
12<\/td>\n4.4 Gas Supply. <\/td>\n<\/tr>\n
13<\/td>\n4.5 Photometric System. <\/td>\n<\/tr>\n
14<\/td>\n4.6 Chamber Leakage.
4.7 Cleaning Materials.
4.8 Ancillary Equipment.
Chapter 5 Test Environment
5.1 Light Interference.
5.2 Product of Combustion Venting.
5.3 Operator Safety. <\/td>\n<\/tr>\n
15<\/td>\nChapter 6 Test Specimen
6.1 Suitability of Sample for Testing.
6.2 Sample Face.
6.3 Number of Specimens.
6.4 Additional Specimens.
6.5 Size of Specimens.
6.6 Specimen Preparation.
6.7 Wrapping of Specimens.
Chapter 7 Setup, Calibration, and Maintenance
7.1 Setup and Calibration Procedures. <\/td>\n<\/tr>\n
16<\/td>\n7.2 Alignment of Photometric System.
7.3 Selection of Compensating Filter(s).
7.4 Linearity Check.
7.5 Calibration of Range-Extension Filter.
7.6 Chamber Leakage Rate Test. <\/td>\n<\/tr>\n
17<\/td>\n7.7 Burner Calibration.
7.8 Radiator Cone Calibration.
7.9 Cleaning.
7.10 Frequency of Checking and Calibrating Procedures.
7.11 Total System. <\/td>\n<\/tr>\n
18<\/td>\nChapter 8 Conditioning
8.1 Pre-Test.
8.2 Conditioning.
Chapter 9 Test Procedure
9.1 Initial Conditions.
9.2 Tests with Pilot Flame. <\/td>\n<\/tr>\n
19<\/td>\n9.3 Preparation of Photometric System.
9.4 Loading Specimen.
9.5 Recording of Light Transmission.
9.6 Observations.
9.7 Termination of Test.
9.8 Specimen Mass.
9.9 Repeat Tests. <\/td>\n<\/tr>\n
20<\/td>\nChapter 10 Calculations
10.1 Specific Optical Density, Ds.
10.2 Clear Beam Correction Factor, Dc.
10.3 Mass Loss.
Chapter 11 Test Report
11.1 Descriptive Information.
11.2 Test Results. <\/td>\n<\/tr>\n
21<\/td>\nAnnex A Explanatory Material <\/td>\n<\/tr>\n
23<\/td>\nAnnex B Precision and Bias <\/td>\n<\/tr>\n
26<\/td>\nAnnex C Interlaboratory Application <\/td>\n<\/tr>\n
27<\/td>\nAnnex D Determination of Mass Optical Density <\/td>\n<\/tr>\n
32<\/td>\nAnnex E Informational References <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

NFPA 270: Standard Test Method for Measurement of Smoke Obscuration Using a Conical Radiant Source in a Single Closed Chamber<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
NFPA<\/b><\/a><\/td>\n2018<\/td>\n40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":180251,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2638],"product_tag":[],"class_list":{"0":"post-180247","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-nfpa","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\/180247","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\/180251"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=180247"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=180247"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=180247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}