The BOZ pods are Pylon mounted CHAFF Dispensers, basically it spits out shredded tin foil. The R Mk1 has it fitted to wing pylons as does the MR2.
From aeroflight web site:
In late 1990 several Nimrod MR.2s were fitted with an underwing FLIR turret under the starboard wing, BOZ pod under the port wing and a Towed Radar Decoy, under the unofficial designation MR.2(GM) - where GM stood for Gulf Mod.
I can only assume that Rib 7 is the Wing Rib that the pylon, then BOZ pod are mounted on, this would not be near the bomb bay and should not be relevant to the incident, but not knowing any of the facts of the incident, I can only make an assumption
And before anyone mentions security this information is readily accessible from the internet.