Hilchos Maasei Hakarbanos 8:21

If an earthenware vessel in which a sin offering was cooked was removed from the courtyard, it is returned to the courtyard and broken there. If it was rendered unclean while outside the courtyard, it should be perforated so that a small root could pass through it. This renders it ritually clean so that it may be returned to the courtyard, where it is then broken. If it is perforated with a hole larger than this, it may not be broken in the courtyard because only vessels are broken there and this no longer qualifies as a vessel. Similarly, if a metal vessel in which a sin offering was cooked is removed from the courtyard, it is returned to the courtyard, where it is washed and rinsed. If it was rendered unclean while outside the courtyard, it is punctured to the degree that renders it ritually clean, at which point it is returned to the courtyard. The metal is then flattened so that the hole is sealed and it resumes the shape of a vessel, after which it is washed and rinsed in the courtyard. This is as per Leviticus 6:21: “If in a copper vessel...,” from which we see that only vessels are washed in the courtyard.

Hilchos Maasei Hakarbanos 9:1

There is a Torah obligation to bring guilt offerings according to their prescribed procedures, to wit: Both the definite and the conditional guilt offerings are slaughtered and their blood sprinkled, as was discussed in chapter 6. After skinning, the parts that are offered on the altar are removed, salted and thrown on the fire. If the kohein wants to carry these pieces in a service vessel, he has that option. The rest of the meat is eaten in the courtyard by male kohanim in the same manner as a sin offering.