API RP 505 (hazardous area classification) Annex D
API RP 505 (hazardous area classification) Annex D
(OP)
API RP 505 for "Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class 1, Zone 0, Zone 1, and Zone 2" contains an Appendix D (Informative Annex) with an alternate method for area classification.
Radii as found using this alternate method can be quite different from the ones calculated using methods from chapters 8-10 of the Recommended Practice. Anyone having any idea why this appendix is there, an when it should be applied?
Radii as found using this alternate method can be quite different from the ones calculated using methods from chapters 8-10 of the Recommended Practice. Anyone having any idea why this appendix is there, an when it should be applied?





RE: API RP 505 (hazardous area classification) Annex D
Is that recommended ACH for the "whole room" or just the zone 1 area limited by the extensions suggested by API RP 505?
Please help... :-/