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Before Present (BP) years, or "years before present" is a time scale used mainly in archaeology, geology and other scientific disciplines to specify when events occurred before the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1 January 1950 as the commencement date (epoch) of the age scale. The abbreviation "BP" has been interpreted retrospectively as "Before Physics", which refers to the time before nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, making carbon dating after that time likely to be unreliable.In a convention that is not always observed, many sources restrict the use of BP dates to those produced with radiocarbon dating; the alternative notation RCYBP is explicitly Radio Carbon Years Before Present.

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  1. P

    The More Innocent Days Long Before Veto....

    After having a few issues trying to solder some cooper pipe, I had a surf around looking what kit is favoured today. After viewing a few videos I was surprised how many seemed to be using Veto totes for their "gas bag"....I am in my 50's and was shown how to solder copper by my old fella when I...
  2. D

    Boiler cuts out before hot water temp satisfied.

    Hi all, My problem is that my oil-fired boiler cuts out before the hot water has reached the thermostat temperature set on the hot water cylinder. At best I get luke-warm water. I have a vented system and the heating side of the system looks like it is working fine. However, with the boiler...
    • Deleted member 112076
    • Thread
    • america before boiler hot hot water temp usa water
    • Replies: 9
    • Forum: USA
  3. M

    Llgsc 2 months before date.

    Can anyone describe how the new system for llgsc s work. We're you can do the check 2 months before, but get to keep the original date for nexts years check. Thank you.
  4. Dan

    A few notes to consider before posting

    I'm coming on this forum and moderating all posts for a good few weeks, and running searches on old posts. I'm noticing things, and some are being reported to me, that concerns me forum-wise. The aim with this place is to be really helpful. No matter what the Original Poster (OP) has come here...
  5. M

    Bonding present and before and tees, but not within 600mm from meter.

    As the title how would people report this on a Cp12? The bondings present, visible and before any tees. However its is not within 600mm of the meter. Thanks.
  6. Lou

    Welcome New Members, Please Read This Before You Post..

    Welcome new members to UKPlumbersForums.co.uk. We are glad that you have found us and joined our friendly and knowledgeable community here. This forum is just to introduce yourself, a quick hello and break the ice. You will be welcomed with open arms :) If you would like to post about a...
  7. D

    Advice please - unvented system - before I call another G3 engineer!

    Hi there, I hope you can help please! I wanted to check whether the following seems reasonable before I spend more £ calling a G3 engineer out. Any help would be really appreciated. I have an Albion unvented system (hopefully the pictures help). Over the last week or so, almost 12 months to...
  8. J

    Anybody seen or done this before, coz I ain't....

    Hello all, Today I was replacing a CC WC with a concealed cistern and BTW pan (in a cabinet). The CC pan was bedded on mortar, I couldn't understand why as the connector was going into the floor, then low and behold when I chipped the mortar away I came across this... 2 x 90 deg pan conn's...
  9. T

    Bizarre central heating problem?? Please help before I go insane!!!!

    Hi Guys, Thanks for reading this. I have a Worcester 25si boiler with [originally] 7 rads. We had a conservatory fitted and had another rad installed in there. Since then the heating downstairs has slowly gone kaput! I'll try to describe the system we have to you. We have the boiler in the...
  10. R

    Are any fittings allowed on mains in before the stopcock?

    My stopcock is in a difficult to access location behind kickboards, can I put a coupling on the mdpe pipe coming up and into the house and move the stopcock up into the cupboard under the sink? Just wondering if any fittings are even allowed between the mains shutoff in the street and the...
  11. W

    I know this has been answered before but I plumb forgot

    15mm plastic pipe manufactured to BSwhathaveyou MUST be 15mm ID or 15mm OD? Thus answering the question whether it's a) all plastic pipe can technically be used with any brand of fitting but you must use the correctly branded insert or b) you must use the correct fitting but could use any brand...
  12. Riley

    Never seen boiler before

    Hello chaps hope you’re all well. i realise the firing process will be the same but I came across a Dimplex OV 32 for the first time and don’t really know where to start with it. It’s in a colossal house and is flashing an error code 7. I’m completely unfamiliar with this boiler and am...
  13. J

    Anyone seen one of these plastic couplers on WC before?

    Hi everyone, I'm in the process of fixing an old Twyfords WC. It is a close-coupled model, though with an unusual plastic elbow between the cistern and pan. See pics. Anyone know if/where I can get a new elbow? Thanks for your advice, Jennie
  14. J

    Have you seen one of these before, coz I ain't...

    Ok folks, standard WC pans are approx 400mm to the rim right? Those for elderly or less able 430mm i.e. DOC M etc. Well in the bathroom I've been working on this week the pan rim height was 490mm!! Pic FYI How terrible is that, doesn't even fit the profile of the pan... at first I thought...
  15. M

    Microbore advice - please! - New run pipe size before reducing to microbore

    Hi All I want to add a radiator to a microbore system; the supply and return pipes are all 22 mm feeding a mixture of 10 mm or 8 mm microbore which are taken directly from the ends of the 22 mm pipes. I plan to "T" into the 22 mm supply and return pipes with a run of "large bore" pipe before...
  16. J

    Vaillant plume kit, not seen one like this before.

    very strange looking plume kit on a Vaillant, not seen one like this before.
  17. B

    Second opinions desired before I throw even more money (literally) down the drain...?

    Since our building work 3 years ago we've had to call out plumbers at least five times to clear the pipework running from the sink to the drain (level run on the ground floor). Over time the pipes, which are 1.5 inches wide, repeatedly clog up and water ends up backing up into the sink and...
  18. W

    Anything I can do/check before calling a gas safe guy?

    Mum's boiler (logic 24 combi) working fine since she moved in 4 months ago now only gets hot water if heating is on. I'm not gas safe and don't touch/check anything electric.
  19. Last Plumber

    Anyone seen this look from a customer before?

    Go on.........Give it a caption!!!!
  20. Inverness

    Acr boiler anyone seen before

    i think it's a acr oil boiler it's floor standing and looks like a fridge freezer in size. Anyone seen this type before? It's connected to underfloor heating and a bronze pump for dhw. Can someone explain how this system works?
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