Electrical Continuity Alone Is Not Enough

Blasters check continuity during explosives safety training supported by ERM.

Blasters check for continuity during explosives safety training supported by ERM.

Recently, ERM assisted a client with a safety issue regarding the use of electric detonators.  The client’s safety policy called for ensuring that electric detonator circuits showed “continuity” before attempting to fire the shot.

Although that is a good practice, we advised the client that a better practice would be to require measurement of the circuit resistance and comparison of that number to the expected resistance. Continue reading

The Amazing Capabilities of UAS and Photogrammetry Software

Unmanned aircraft system (UAS) and photogrammetry software have matured together at just about the right time.  This makes for possibilities that were unthinkable only a few years ago.

ERM used demo software downloaded from the Internet and images taken by a hobbyist with a Phantom 2 Vision+ UAS to create this photogrammetry video in only a few hours, learning curve included.  Yeah, those are school buses.  Imagine the possibilities.

ERM Supports Revision of the NFPA Fire Protection Handbook

nfpaThe National Fire Protection Association (NFPA) and Explosives Risk Managers (ERM) reached an agreement today for ERM to update a chapter from the 20th edition of the Fire Protection Handbook; specifically Chapter 6.15 Explosives and Blasting Agents.  The 20th edition was available in 2008.

The completion date for this project mid-April 2015.  The publication will be available in hard copy or a new e-version from NFPA several months later.



Caution: Do Not Follow FAA Instructions on Obtaining COA

Explosives Risk Managers confirmed today that the the information posted by FAA on obtaining a civil certification of waiver authorization (COA) under Section 333 is incorrect.  FAA replied to our inquiry via email…

We are in the process of updating our website. For civil COAs you need an exemption first before you can apply. Once you receive your exemption # you will then be able to submit a Civil COA.

FAA will probably fix the website soon.  We just hope it takes less than 60 days to get a response from FAA on a request for a COA.


OSM Accepts Wild Earth Guardians’ Petition for Rulemaking on NOx

On July 14, 2014 the Office of Surface Mining and Reclamation Enforcement (OSM) announced that it had received a petition for rulemaking from the Wild Earth Guardians (WEG) to regulate NOx from blasting more rigorously and invited the public to comment.

OSM received 119 comments on the petition, many supportive.  On February 20, 2015 OSM announced that it accepted the petition and would open rulemaking to “address this issue.”   Continue reading