Knowledge Hub · Saxsons Sharps Container Shield
The sharps container sits within metres of the dispense bench. Dose-rate at the outer surface depends on the sharps content × the lead tier; cumulative exposure across the shift adds to the operator dose-budget. This page is the physics behind the Pb-tier ladder, the magnetic-closure ergonomics rationale and the AERB chain-of-custody framework that ties the sharps container to the decay-drum + biomedical-waste chain.
Why this matters
Pb tier per radiopharmaceutical class
Tc-99m sharps at 140 keV (HVL 0.27 mm) need only 3 mm Pb for > 99.95 % attenuation. I-131 at 364 keV (HVL 3 mm) calls for 6 mm. F-18 / Ga-68 at 511 keV (HVL 4.1 mm) calls for 12 mm. High-activity PET radiopharmacies and Lu-177 theranostic suites step up to 25 mm because the per-shift cumulative activity of sharps in the open container drives bench-side dose-rate. The right tier matches the dispense class.
Source: NIST XCOM cross-section database; NCRP Report 49 HVL framework.
Magnetic top-cap ergonomics
The sharps-deposit motion is a single-event high-risk operation — a freshly-used needle approaches an open contaminated-waste cavity. A magnetic top-cap closure means the operator opens the lid with light finger pressure and releases the lid to self-close as the syringe drops in. Total hand-time over the open chassis falls measurably vs a screw-cap or latched mechanism; the hand never has to grip the lid and the sharps simultaneously.
Source: AAPM Report 88 — Quality Assurance for Radiopharmacy; AORN OR / hot-lab sharps-disposal SOP.
Worktop-mount vs bench-top form factor
A recessed cylindrical sharps container sits flush with the worktop — sharps drop straight down without the operator lifting the syringe over a bench-top obstruction. The cylindrical form integrates with the Saxsons Dose Cabinet and L-Bench worktop cutout. Rectangular / square form factors are the right choice where the bench design does not include a worktop cutout — they sit on top of the surface and accept the syringe at a slight downward motion.
Source: AAPM 88 radiopharmacy workflow design; Saxsons hot-lab fit-out reference.
Lock + AERB chain-of-custody
AERB chain-of-custody for high-activity radioactive sharps (PET, Lu-177 theranostic) requires controlled access between dispense shifts and at the disposal-pickup step. The integrated lock + scheduled-key access pattern lines up with the radiation-safety-officer SOP; the per-shift access events are documentable on the AERB licence-renewal audit trail.
Source: AERB Safety Code for Nuclear Medicine Facility; ICRP Publication 103.
Pairs with decay-drum + storage-cabinet chain
A full container does not go directly to biomedical-waste disposal. The contents transfer to a Pb-lined decay drum (matched tier) for the half-life-based hold cycle (10 half-lives = ~ 0.1 % residual), then to the biomedical-waste chain under the CPCB Bio-Medical Waste Management Rules. The Saxsons sharps container + decay drum + storage cabinet range covers the documented end-to-end chain from dispense bench to final disposal.
Source: AERB Safety Code; Bio-Medical Waste Management Rules (India); IAEA SRS 38.
Outer-material choice
MS painted is the cost-optimised outer for hot-labs with weekly cleaning cycles. SS 202 is the upgrade for daily wet wipe-down. SS 304 is the right choice when the lab is built to clean-room / GMP-grade surface specs or runs an active cleaning-validation programme — repeated wet cleaning does not degrade the surface coating, and the GMP auditor accepts it. The lead-shielding mass inside is identical across the three.
Source: EU GMP Annex 1 (revised 2022); AAPM Report 88 cleaning-validation framework.
Sharps-disposal Pb tier physics, chain-of-custody framework and biomedical-waste handoff.
Indian regulatory framework — sharps-disposal chain-of-custody and storage expectations.
CPCB framework for biomedical sharps the radioactive chain inherits at the post-decay step.
AAPM radiopharmacy QC framework including sharps-disposal workflow.
Current ICRP framework defining occupational dose limits affecting cumulative sharps-disposal exposure.
Authoritative reference for photon attenuation across SPECT / PET / I-131 energies.