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Frank1970  
#1 Posted : 06 February 2017 16:07:09(UTC)
Rank: Forum user
Frank1970

We have an excavation at 2.4 metres which has been shored up with a proprietry shoring system. UK Power Networks need to get in the trench to pull cables. However, they refuse to enter the trench without seeing a Temporary Works Design and inspection certificate. Standard job, nothing too complicated.

Is this correct? Any advice greatly appreciated. Thanks...

fhunter  
#2 Posted : 07 February 2017 08:16:59(UTC)
Rank: Forum user
fhunter

Hi Frank, 

Yes there should be an inspection regime, have a look at: http://www.hse.gov.uk/pubns/cis47.pdf. The inspection should take place at the start of every shift, after any event that could have affected stability  (such as heavy rain) or if you notice any earth movement or falling. 

With regards to the design, although it is a proprietry system, someone, somewhere must have assessed the requirements and made calculations as to what consitutes sufficent support in terms of weight and what the ground is like etc. Who has calculated the loads and the support system? Structural engineer most likely?

I don't think you would need a Temporary Works Coordinator on this job as it does not sound like a complex excavation.

Other things to consider is have you got a resuce plan in place? have you got gas monitor? 

thanks 1 user thanked fhunter for this useful post.
Frank1970 on 08/02/2017(UTC)
Oldroyd19659  
#3 Posted : 07 February 2017 08:55:53(UTC)
Rank: Forum user
Oldroyd19659

If you have hired in the proprietry shoring equipment just ring the company who hired you it they will have it. Most proprietry shoring equipment have sufficient FoS built in to cope with environmental changes such as rain,snow etc.

Not sure about the "inspection certificate"...do they mean something off the hire company or your inspection records. 

thanks 1 user thanked Oldroyd19659 for this useful post.
Frank1970 on 08/02/2017(UTC)
James Robinson  
#4 Posted : 08 February 2017 12:51:05(UTC)
Rank: Forum user
James Robinson

Have a look at Reg 22 and Reg 24 of CDM 2015 - should point you in the right direction.

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