app.py

import streamlit as st

def get_maintenance_plan(service_hours):
    maintenance_tasks = []

    # Daily Maintenance
    maintenance_tasks.append("Daily Maintenance Tasks:\n- Check cooling system coolant level.\n- Check electrical connections.\n- Perform a 'walk-around inspection.'")

    # Weekly Maintenance
    if service_hours >= 50:
        maintenance_tasks.append("Weekly Maintenance:\n- Inspect the generator.\n- Inspect the instrument panel.\n- Drain water and sediment from the fuel tank.")

    # Every 250 Service Hours
    if service_hours >= 250:
        maintenance_tasks.append("Every 250 Service Hours:\n- Obtain a Level 1 coolant sample.")

    # Initial 500 Hours
    if service_hours >= 500:
        maintenance_tasks.append("Initial 500 Hours (New, Refilled, or Converted Systems):\n- Obtain a Level 2 coolant sample.")

    # Every 500 Service Hours
    if service_hours >= 500:
        maintenance_tasks.append("Every 500 Service Hours:\n- Inspect/Adjust/Replace alternator belt.\n- Replace the fuel system secondary filter.")

    # Every 500 Service Hours or 1 Year
    if service_hours >= 500:
        maintenance_tasks.append("Every 500 Service Hours or 1 Year:\n- Check battery electrolyte level.\n- Replace the air cleaner element (single element).\n- Replace engine crankcase breather.\n- Obtain engine oil sample.\n- Change engine oil and filter.\n- Replace the fuel system primary filter (water separator).\n- Inspect/Replace hoses and clamps.")

    # Every 1000 Service Hours
    if service_hours >= 1000:
        maintenance_tasks.append("Every 1000 Service Hours:\n- Inspect/Adjust engine valve lash.")

    # Every 1000 Service Hours or 1 Year
    if service_hours >= 1000:
        maintenance_tasks.append("Every 1000 Service Hours or 1 Year:\n- Check the rotating rectifier.")

    # Every 2000 Service Hours
    if service_hours >= 2000:
        maintenance_tasks.append("Every 2000 Service Hours:\n- Inspect the alternator.")

    # Every 2000 Service Hours or 6 Months
    if service_hours >= 2000:
        maintenance_tasks.append("Every 2000 Service Hours or 6 Months:\n- Inspect engine mounts.\n- Inspect the starting motor.\n- Inspect the turbocharger.")

    # Every 3000 Service Hours
    if service_hours >= 3000:
        maintenance_tasks.append("Every 3000 Service Hours:\n- Test/Exchange fuel injection nozzles.\n- Inspect the water pump.")

    # Every 3000 Service Hours or 2 Years
    if service_hours >= 3000:
        maintenance_tasks.append("Every 3000 Service Hours or 2 Years:\n- Replace the cooling system water temperature regulator.")

    # Every 6000 Service Hours or 3 Years
    if service_hours >= 6000:
        maintenance_tasks.append("Every 6000 Service Hours or 3 Years:\n- Add cooling system coolant extender (ELC).")

    # Every 12,000 Service Hours or 6 Years
    if service_hours >= 12000:
        maintenance_tasks.append("Every 12,000 Service Hours or 6 Years:\n- Change the cooling system coolant (ELC).")

    return maintenance_tasks

# Streamlit app
st.title("Diesel Generator Maintenance Planner")
st.subheader("For a 120 kW Diesel Generator")

# Input field for service hours
service_hours = st.number_input("Enter the total service hours of the generator:", min_value=0, step=1)

# Button to calculate maintenance plan
if st.button("Get Maintenance Plan"):
    maintenance_plan = get_maintenance_plan(service_hours)
    st.write("### Maintenance Tasks")
    for task in maintenance_plan:
        st.write(f"- {task}")

st.write("\n---\n")
st.write("This application provides maintenance recommendations based on service intervals for a 120 kW diesel generator.")