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messyshaw  
#1 Posted : 23 September 2010 19:19:38(UTC)
Rank: Super forum user
messyshaw

I have a customer who simply has to use LPG in the process at his works. But the premises is in a landlocked city centre location with absolutely no outside/open space. Perhaps 4 to 5 cylinders involved So what is the most suitable method of storing these inside (elimination is not an option)
simonmillward  
#2 Posted : 23 September 2010 20:23:28(UTC)
Rank: Forum user
simonmillward

Can you expand on what he is actually tasked with doing!! as the introduction of explosive cylinders in an enclosed space sounds rather risky.
messyshaw  
#3 Posted : 24 September 2010 04:56:25(UTC)
Rank: Super forum user
messyshaw

Generally (but not exclusively) occasional light engineering associated with running repairs of a large 68,000m2 office block. The offices run 24/7 and for business continuity reasons have FM engineers on site to keep services running at all times. Therefore the cylinders need to be readily accessible for the engineers to keep the business up-and-running. I have scoured every inch of the building and simply cannot find a reasonably ventilated area. Reducing the number of cylinders will reduce the risk, but perhaps not as much as I would like. There are hundreds of city centre buildings like this across the UK with an urgent need to keep running and with engineering facilities on site. What do they do??
MaxPayne  
#4 Posted : 24 September 2010 07:24:40(UTC)
Rank: Super forum user
MaxPayne

Suggested reading (priced publication) - BCGA GN2 (guidance for the storage of gas cylinders in the workplace) Section 5.10 talks about indoor storage and the recomendation to avoid that; however it notes considerations for a SMALL number of cylinders where avoidance cannot be eliminated: Fire impacting on cylinder store Density of gas risk of explosion from flammable gas release Leakage of valves or safety relief devices ventilation requirements access/egress to and from cylinder store movement and handling of cylinders to/from store detection equipment exposure of personel to gas/gases
Clairel  
#5 Posted : 24 September 2010 08:41:53(UTC)
Rank: Super forum user
Clairel

Sometimes storing indoors is unavoidable. Advice would be keep to an absolute minimum (4 or 5 would be acceptable in my opinion) and store safely ie, upright, away from sources of heat or possibley impact and away from escape routes.
MaxPayne  
#6 Posted : 24 September 2010 09:03:34(UTC)
Rank: Super forum user
MaxPayne

quote=Clairel]Sometimes storing indoors is unavoidable. Advice would be keep to an absolute minimum (4 or 5 would be acceptable in my opinion) and store safely ie, upright, away from sources of heat or possibly impact and away from escape routes.
Clairel, wishing to add to what you've said only. The storage need to consider drainage, gullys, basements, etc where a gas that is heavier than air can accumulate and form an explosive atmosphere. I'd suggest that aside from the impact on the buildings fire risk assessment that a competent person undertakes a DSEAR assessment to account for those specific hazards. It's also not clear how the gases are being used, but if they are in association with others such as oxygen, then the problem of separation becomes not only very important but increases difficulty of the whole issue.
Safety Smurf  
#7 Posted : 24 September 2010 09:26:21(UTC)
Rank: Super forum user
Safety Smurf

Messyshaw, Have you got any flat, load bearing roofs?
David Bannister  
#8 Posted : 24 September 2010 12:25:42(UTC)
Rank: Super forum user
David Bannister

Messyshaw, is it essential to have all the cylinders? Given the City-centre location it is very likely that a replacement cylinder can be supplied within a very short time so maybe possible to reduce to 2 (in-use and spare). Presumably little or no possibility of these being hit by a vehicle so that's a bonus unlike many industrial sites where they're stored in the loading bay! Remember there are millions of these in use and in storage and thankfully very seldom do we hear of an explosion. Good storage arrangements, excellent ventilation, excellent housekeeping, absolutely no mobile heating nor naked flames should all be part of the management, along with previous good advice.
messyshaw  
#9 Posted : 25 September 2010 00:37:17(UTC)
Rank: Super forum user
messyshaw

There are no other cylinders in use, or suitable open air spaces whatsoever. It's the issue of separating the heavier than air gas from ignition sources I am struggling with. I intend to add an appendix to the FRA specifically relating to these cylinders, outlining the associate risks with LPG and providing the various options (and a risk score for each for comparison reasons) and let the RP decide. Personally, I wouldn't have so many cylinders - but the customer (who are always right, aren't they!?) insists!! Thanks for the input
User is suspended until 03/02/2041 16:40:57(UTC) Ian.Blenkharn  
#10 Posted : 26 September 2010 08:25:47(UTC)
Rank: Super forum user
Ian.Blenkharn

This is so typically where things start to go off the rails - bending with the customer's expectations and accepting something that is less than perfect, or even palpably unsafe, occurs far too often. The pressures to do so are sometimes overwhelming, it's either get paid or not and though that should have no bearing on the decisions made it is difficult to remain fully objective. "I have a customer who simply has to use LPG in the process at his works" - well, others may see that differently and prohibit this application, or choose to cancel insurance cover. The customer's neighbours may have something to say about it too. <simply has to have it> is quite clearly nonsense. If it is unsafe and no safe solution can be found, ship out and do it somewhere else, or stop! <I intend to add an appendix to the FRA> a wise precaution, to demonstrate that you have NOT bent in the wind and gone against your training and experience. But it needs to be punchy, to make it absolutely clear where you stand and leave the client in no doubt about the issues involved and your concerns. <but the customer (who are always right, aren't they!?) insists!!> No, they are not. Those who take that line of least resistance may find themselves with a lot of uncomfortable questions to answers. The caveats that you will make clear in your Appendix seems sensible
Inchoa  
#11 Posted : 26 September 2010 18:30:43(UTC)
Rank: Forum user
Inchoa

messyshaw, I have found the following site useful http://www.uklpg.org/, they have several codes of practice that give advice on storage of LPG.
PhilBeale  
#12 Posted : 27 September 2010 16:00:35(UTC)
Rank: Super forum user
PhilBeale

Would flame proof cabinet with fume extraction be a suitable solution. i've seen pictures of one of these cabinets in a building which was totally burnt to the ground but when they opened the cabinet up the chemicals of flammable materials where completely untouched. there not cheap but if the customer wants LPG so badly on site then he may well have to pay the cost for storing it safely. How often do they actual use lpg if it is infrequent then they could just hire the bottles when needed and off hire or make arrangements with a supplier to store them on their behalf. Phil
messyshaw  
#13 Posted : 27 September 2010 18:47:13(UTC)
Rank: Super forum user
messyshaw

The LPG is used about 3 times a month (sometimes more) when urgent repairs or fabrication of a spare part is required in order to keep the business running. The business runs 24/7 so may need the kit out of hours when hiring in is not an option I like the idea of a vented fume cupboard type of idea. The customer's needs are so important, it is likely he will swallow any reasonable costs which allow the storage of this gas. The venting system would need to be intrinsically safe and discharge in a safe area (away from openings). It would also perhaps need quite a push to ensure leaks are removed vertially before discharge to open air. It is worth some more research. Maybe they could make one with their precious LPG kit!! :) Thanks Red
PhilBeale  
#14 Posted : 27 September 2010 19:38:12(UTC)
Rank: Super forum user
PhilBeale

I Should have some supplier details somewhere as there where a couple of companies at the H&S expo this year. One had 90 minute fire rating and automatic self closing doors so even if someone left the doors open they self close. i would have thought with powered extraction should remove gases heavier than air due to volume of air being draw through the cabinet. If you want me to dig out the details then either email me or give me a phone you have my details Phil
MikeN62  
#15 Posted : 28 September 2010 17:31:38(UTC)
Rank: Forum user
MikeN62

One of the companies is Denios based in Newtown. www.denios.co.uk if this helps.
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