Q & A: Can Safety PLCs be used for Lockout?

The ques­tion of lock­out and the use of safe­ty PLCs as a means to meet the lock­out require­ments comes up more and more fre­quent­ly these days. Can Safe­ty PLCs be used for lock­out? Safe­ty pro­fes­sion­als don’t always agree on this con­tro­ver­sial top­ic!

Dur­ing the Free Safe­ty Talks that we did with Schm­er­sal Cana­da and Franklin Empire, this hot ques­tion came up, so I thought I’d cov­er it off in a video. If you need some spe­cif­ic help with an appli­ca­tion like this, please get in touch with Doug direct­ly.

There is a lot to say, and in this video I try to cov­er off the rea­sons why Safe­ty PLCs and Lock­out don’t always mix well.

Notes

Ontario Reg­u­la­tion 851, Indus­tri­al Estab­lish­ments

CSA Z432, Safe­guard­ing of Machin­ery

CSA Z460, Con­trol of haz­ardous ener­gy – Lock­out and oth­er meth­ods

ISO 13849–1, Safe­ty of machin­ery — Safe­ty-relat­ed parts of con­trol sys­tems — Part 1: Gen­er­al prin­ci­ples for design

ISO 13849–2, Safe­ty of machin­ery — Safe­ty-relat­ed parts of con­trol sys­tems — Part 2: Val­i­da­tion

IEC 62061, Safe­ty of machin­ery — Func­tion­al safe­ty of safe­ty-relat­ed elec­tri­cal, elec­tron­ic and pro­gram­ma­ble elec­tron­ic con­trol sys­tems

IEC TR 62061–1:2010, Guid­ance on the appli­ca­tion of ISO 13849–1 and IEC 62061 in the design of safe­ty-relat­ed con­trol sys­tems for machin­ery

Ques­tions? Leave a com­ment below or email Doug.

Free Safety Talks — May 2018

People in a training class, listening to an instructor

Free Machinery Safety Talks

This May we are once again part­ner­ing with Schm­er­sal Cana­da and Franklin Empire to pro­vide free safe­ty talks in South­ern Ontario.  If you are respon­si­ble for the safe­ty of work­ers using machin­ery in Ontario, Cana­da, ensur­ing their safe­ty is a key pri­or­i­ty for you every day. Under­stand­ing your respon­si­bil­i­ties is vital to main­tain­ing and improv­ing your work­ers’ safe­ty.

Pre-Start Health and Safety Reviews and Interlocking Devices

We will be cov­er­ing Pre-Start Health and Safe­ty Reviews and Inter­lock­ing Devices under ISO 14119. Our experts will there and ready to answer your ques­tions at these free safe­ty talks. Addi­tion­al details are pro­vid­ed through the links below.

Dates and Locations

Take advan­tage of the three oppor­tu­ni­ties com­ing up in May. If you are inter­est­ed in attend­ing one of these half-day events, we will be run­ning them in:

Reg­is­tra­tion is lim­it­ed, so act quick­ly if you want to go! Break­fast starts at 7 a.m., with the Free Safe­ty Talks start­ing at 8:00 sharp.

Hope to see you there!

Brexit is such a waste

This morn­ing I read news of the tests that the May Gov­ern­ment plans to use when assess­ing the Brex­it deal they are try­ing to nego­ti­ate with the EU.

If you scroll down through the tests you will dis­cov­er that the UK real­ly doesn’t want any­thing to change, includ­ing CE Mark­ing, a fun­da­men­tal part of the EU Sin­gle Mar­ket. Don­ald Tusk has made it very clear that the UK will not have access to the sin­gle mar­ket after Brex­it, so the items relat­ing to reg­u­la­to­ry har­mon­i­sa­tion are traps that will almost cer­tain­ly cause rejec­tion of the deal.

Fur­ther down, you will also see that May does not want to lose the free­dom of move­ment of peo­ple or mon­ey. If you know any­thing about the EU, you prob­a­bly know that the three pil­lars of the EU are the free­dom of move­ment of:

  • Peo­ple
  • Goods
  • Cap­i­tal

The tests show that the UK hopes to keep all of these, which begs the ques­tion, why leave at all? The UK already has all the items in the tests as a mem­ber of the EU. These are grant­ed as part of mem­ber­ship. The costs asso­ci­at­ed with main­tain­ing this cha­rade are astro­nom­i­cal while stay­ing in the union pro­vides sig­nif­i­cant ben­e­fits and rel­a­tive­ly few costs.

Isn’t it time for Prime Min­is­ter May and her gov­ern­ment to give up this game and admit that Brex­it is a bad deal for the UK, and that con­tin­ued mem­ber­ship is the best way for­ward?