The 30-year-old Leinster star - who makes his 70th Test appearance in Murrayfield - takes over the mantle from legendary centre Mike Gibson, who accumulated his haul of 69 from 1964 to 1979 at the same time as holding down a career as a lawyer.

Seventy not out for modern-day professional O'Kelly is still an achievement to be hailed in the Dubliner's eyes.

''I've been very lucky to be involved with a successful Irish team, and really, I came into the rugby world at a good time - at the dawn of professionalism.

''But I must have done something right to get up to 70.

''You still have to go out there and lace up your boots, so I'm delighted to get to Mike Gibson's mark after eight seasons,'' added O'Kelly, the holder of a masters degree in Mathematics.

O'Kelly has become something of a focal point in Eddie O'Sullivan's Irish side over the last three years, after making his debut against New Zealand in 1997.

The 6ft 8in lock has started 15 of Ireland's last 16 Tests, and is not about to call it a day just yet.

''Even though Brian (O'Driscoll) - on 50-something caps - and the others will probably pass me out in time, if I stay clear of injury with my contract up in two seasons, I don't see any reason why I wouldn't continue.

''If I still feel I am capable of making a difference on the pitch, then there's no reason not to. Gareth Llewellyn is still lining out for Wales at nearly 36,'' he added.

A long-time admirer of O'Kelly - one of 11 Ireland players to start all five of their 2003 World Cup games - O'Sullivan knows his lineout master can hit the heights this season.

''Mal had a great game against Italy, given the occasion within it,'' said O'Sullivan.

''He's earned his standing in the game and his caps record is a testament to his fitness and drive. He's vital to our chances in the Six Nations.''