During a Port State Control (PSC) inspection, the officer will check that the ship complies with the requirements of the International Code for the Safe Carriage of Grain in Bulk (International Grain Code). The following are some of the items that the PSC officer may check:

Documentation: The officer will check that the ship has a valid International Grain Code certificate and that it is properly endorsed. The officer may also check the ship's grain loading manual and cargo plan to ensure that they comply with the requirements of the code.
Cargo holds: The officer will inspect the cargo holds to ensure that they are clean and free from any residues of previous cargoes. The officer will also check that the holds are properly ventilated and that the ventilation systems comply with the requirements of the code.
Loading and stowage: The officer will check that the grain cargo has been loaded and stowed in accordance with the requirements of the code. The officer will check that the cargo has been properly trimmed and secured to prevent shifting during the voyage.
Fire safety: The officer will check that the ship has appropriate fire safety systems in place, including fire detection and extinction systems, to prevent and respond to fires in the cargo holds.
Structural strength: The officer will check that the ship's structure is strong enough to withstand the loads imposed by the grain cargo. The officer may also check that the ship's hatch covers and other closing appliances are in good condition and properly maintained.
Training and competence: The officer will check that the crew of the ship has appropriate training and competence in the loading, stowage, and unloading of solid bulk cargoes, as well as in emergency response procedures.
If the PSC officer identifies any deficiencies related to the International Grain Code, the officer may detain the ship until the deficiencies are rectified. Some of the common deficiencies related to the code include:

Inadequate cargo hold cleaning and preparation
Inadequate ventilation of cargo holds
Improper loading and stowage of grain cargo
Inadequate fire safety systems
Structural deficiencies, such as cracked or corroded hatch covers
Inadequate training and competence of the crew in the handling of solid bulk cargoes.
In conclusion, the Port State Control officer will check that the ship complies with the requirements of the International Grain Code during a PSC inspection. The officer will check various items, such as documentation, cargo holds, loading and stowage, fire safety, structural strength, and training and competence of the crew. If any deficiencies are identified, the officer may detain the ship until the deficiencies are rectified.