At its March Technology Evening, the Johannesburg branch hosted Mike O’Neill from Expo Technologies, England, who presented on ‘Ex P type protection for the process industry’.
Eric Carter (right) presents Mike O’Neill his certificate after the presentation.
Ex p can protect many systems that are difficult to cover with Ex d or Ex e type of explosion protection. Applications suitable to Ex p protection are control, panels, switch gear, motors, generators analysers and shelters. The basic principle includes purging the enclosure to displace any gases present. The enclosure may then have a small flow (leakage compensation) or a large continuous flow to ensure it remains pressurised to prevent ingress of external atmosphere. The various Ex p methods are static pressurisation, where the enclosure is purged, pressurised and sealed; leak compensation, where the enclosure is purged and pressurised then switched to small flow to top up any leaks; and finally continuous flow where the enclosure is purged and pressurised and the purge flow continues.
The three types of Ex p covered were, Ex pz (zone 2 manual) and Ex px (Zone 1 which requires some automation), and Ex py (zone 1 – manual). Mike covered some practical limits, minimum requirements and IEC and NFPA standards governing Ex p protection, pneumatic and electronic timers, enclosure types, typical alarms, certification, as well as advantages and selection criteria of Ex p and smart purge.
The branch thanks Mike O’Neill for his valued and informative presentation.
Johan Maartens (right) handing over the coffee machine won by DR Shorer at the SAIMC rebranding lucky draw.
Committee for 2014
The branch also elected the following committee members to serve for the 2014 financial year: Eric Carter (chairman), Alvin Seitz (treasurer), Dave Robinson (site visit coordination), Andrew Bharath (media liaison), Roxanne Bredenkamp (secretary), Mike Banda, Debbie Scott, Gary Friend and Jay King.
The following site visits are planned for the course of the year:
* Unilever.
* 3M.
* Sedibeng Brewery.
* AST.
Technology evenings are envisaged by the following companies:
* Beckhoff Automation.
* Phoenix Contact.
* Endress+Hauser.
* Robor.
The branch will be hosting its annual golf day in August – formal invite to follow soon.
Digitise what matters and leverage
SAIMC
SAIMC has been invited to partner with technology leaders 4Sight and NextGenOpX for a one-day industry event aimed at unlocking the full value of OT investments in the mining sector.
Read more...SAIMC: From the office of the COO: Ethical and practical use of AI SAIMC
SAIMC
In this day and age, we all have access to AI tools. A lot of people claim that if you are not using AI tools in your daily job today you are falling behind. But would it be ethical to use AI tools to write an article per day and sign my name to it?
Read more...SAIMC: Durban branch SAIMC
SAIMC
The Durban branch of the SAIMC held its July technology meeting at the familiar Premier Splendid Hotel, drawing a strong turnout of industry professionals.
Read more...SAIMC: Johannesburg branch SAIMC
SAIMC
The SAIMC Johannesburg branch recently hosted the July Technology Evening at the Bryanston Sports Club.
Read more...Digitise what matters and leverage
SAIMC
SAIMC has been invited to partner with technology leaders 4Sight and NextGenOpX for a one-day industry event aimed at unlocking the full value of OT investments in the mining sector.
Read more...Bridging the digital gap in industrial systems SAIMC Supplier Advisory Council
SAIMC
Industrial engineers, digital transformation leaders, and operations managers are invited to an exclusive knowledge-sharing event designed to tackle the complexities of digitising large-scale systems.
Read more...SAIMC Johannesburg branch SAIMC
SAIMC
The SAIMC Johannesburg branch recently hosted the June Technology Evening. The presentation covered HVAC systems through the lens of instrumentation, highlighting how sensor technologies form the backbone of effective monitoring and control, allowing for effective energy efficiency.
Read more...SAIMC Durban branch SAIMC
SAIMC
The SAIMC Durban Branch hosted its latest technology meeting on 4 June.The event drew a strong turnout, highlighting the keen interest in the topic ‘Understanding Level Measurement: Contact vs Non-Contact Methods’.
Read more...SAIMC at KITE 2025
SAIMC
The Society for Automation, Instrumentation, Mechatronics and Control Engineering (SAIMC) invites you to connect with us at the KwaZulu-Natal Industrial Technology Exhibition (KITE) from Tuesday 22 to Thursday 24 July 2025.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version