Workshop AI Prompting: Zero Prompting

Workshop Pengoptimalan AI

25-28 Februari 2025

Nusantara Power Services | Akhmad Guntar

Konsep Zero Prompting

Zero prompting adalah teknik meminta AI untuk melakukan tugas tanpa memberikan contoh atau konteks tambahan. Teknik ini efektif untuk:

Tugas-tugas yang relatif sederhana dan jelas
Pertanyaan yang spesifik dan terfokus
Analisis yang tidak memerlukan format khusus
Situasi yang membutuhkan respon cepat

Tips Zero Prompting

Gunakan bahasa yang jelas dan spesifik
Fokus pada satu tugas dalam satu prompt
Sebutkan output yang diharapkan
Hindari instruksi yang ambigu
Verifikasi hasilnya sesuai standar yang berlaku

Contoh Zero Prompting per Departemen

HRD

"Evaluasi hasil interview kandidat berikut: Teknis: 85/100 Komunikasi: 78/100 Problem Solving: 82/100 Culture Fit: 88/100 Pengalaman: 5 tahun di bidang yang relevan"

Berdasarkan hasil evaluasi:

Kekuatan:
- Culture fit sangat baik (88/100), menunjukkan potensi adaptasi yang baik dengan tim
- Kompetensi teknis kuat (85/100), memenuhi kebutuhan posisi
- Pengalaman 5 tahun memberikan fondasi yang solid

Area Pengembangan:
- Komunikasi (78/100) perlu ditingkatkan untuk level senior
- Problem solving (82/100) cukup baik tapi masih ada ruang improvement

Rekomendasi: HIRED
Justifikasi:
- Skor total di atas threshold minimum (>80)
- Pengalaman relevan memadai
- Kelemahan di area komunikasi dapat ditingkatkan melalui training

Catatan Onboarding:
- Sertakan dalam program communication skill development
- Assign mentor untuk akselerasi adaptasi
- Review progress dalam 3 bulan pertama

Safety Officer

"Klasifikasikan tingkat bahaya (HIGH/MEDIUM/LOW) dari kondisi berikut: Ditemukan genangan oli di area walking platform turbine deck, sudah diberi absorbent dan safety cone, tapi belum dibersihkan dalam 2 jam terakhir."

Tingkat Bahaya: HIGH

Alasan Klasifikasi:
1. Lokasi kritis - turbine deck adalah area vital dengan traffic tinggi
2. Durasi exposure - 2 jam adalah terlalu lama untuk hazard yang belum diatasi
3. Potensi bahaya ganda:
   - Slip and fall hazard dari genangan oli
   - Fire hazard dari material mudah terbakar
4. Kontrol eksisting tidak memadai:
   - Absorbent dan safety cone hanya kontrol sementara
   - Tidak ada tindak lanjut pembersihan

Tindakan yang Diperlukan:
1. Immediate Actions:
   - Isolasi area dengan barrier tape
   - Lakukan pembersihan segera
   - Investigasi sumber kebocoran

2. Preventive Measures:
   - Review prosedur response time
   - Tingkatkan frekuensi inspeksi
   - Update SOP housekeeping

Referensi:
- NFPA 70E Standard
- OSHA Walking-Working Surfaces
- Site Safety Procedures

Pengadaan

"Bandingkan tiga penawaran vendor berikut dan rekomendasikan pilihan terbaik: Vendor A: - Harga: 450 juta - Delivery: 12 minggu - Payment: 30/70 - OEM Parts Vendor B: - Harga: 380 juta - Delivery: 16 minggu - Payment: 50/50 - Compatible Parts Vendor C: - Harga: 520 juta - Delivery: 8 minggu - Payment: 20/80 - OEM Parts"

Analisis Komparatif:

1. Biaya
   Vendor A: Moderate (450 juta)
   Vendor B: Lowest (380 juta, -15.5%)
   Vendor C: Highest (520 juta, +15.5%)

2. Delivery Time
   Vendor A: Standard (12 minggu)
   Vendor B: Longest (16 minggu, +33%)
   Vendor C: Best (8 minggu, -33%)

3. Payment Terms
   Vendor A: Favorable (30/70)
   Vendor B: Least Favorable (50/50)
   Vendor C: Most Favorable (20/80)

4. Parts Quality
   Vendor A: High (OEM)
   Vendor B: Medium (Compatible)
   Vendor C: High (OEM)

Rekomendasi: Vendor A

Justifikasi:
1. Balance optimal antara harga dan kualitas
2. Delivery time masih dalam batas acceptable
3. Payment terms cukup menguntungkan
4. Risiko kualitas minimal dengan parts OEM

Catatan:
- Vendor B terlalu berisiko dengan parts non-OEM
- Vendor C premium cost tidak sebanding benefit
- Vendor A menawarkan total value terbaik

Supply Chain

"Tentukan level reorder point dan safety stock untuk spare part dengan data: - Monthly usage: 8 units - Lead time: 12 weeks - Critical part for turbine - Stock out cost: >100 juta/hari - Current stock: 6 units - Unit price: 25 juta"

Analisis Inventory Parameters:

1. Reorder Point Calculation:
   - Monthly usage = 8 units
   - Weekly usage = 2 units
   - Lead time usage = 2 units × 12 weeks = 24 units
   - Base ROP = 24 units

2. Safety Stock Determination:
   - Criticality: High (turbine operations)
   - Stock out impact: Severe (>100 juta/hari)
   - Recommended safety factor: 2 months
   - Safety stock = 16 units (2 × monthly usage)

3. Total ROP = 40 units
   (Base ROP + Safety Stock)

4. Current Status:
   - Current stock (6 units) BELOW minimum level
   - Immediate order required
   - Order quantity recommendation: 40 units

5. Financial Impact:
   - Order value: 1 milyar (40 × 25 juta)
   - Holding cost consideration: 2.5% monthly
   - Risk mitigation value: >3 milyar/month

Rekomendasi:
1. Place immediate order for 40 units
2. Review lead time with vendors
3. Implement VMI program consideration
4. Develop alternate vendors

Monitoring Requirements:
- Weekly stock review
- Monthly usage trend analysis
- Quarterly parameter review

Operator Pembangkit

"Tentukan tindakan yang harus diambil untuk kondisi operasi berikut: - GT exhaust temp naik dari 535°C ke 548°C dalam 30 menit - Beban tetap di 150 MW - Ambient temp 32°C - Compressor inlet pressure normal - Vibrasi normal"

Analisis Kondisi:

1. Parameter Kritis:
   - Exhaust temp rise: +13°C
   - Rate: 26°C per jam
   - Trend: Cepat
   - Severity: WARNING level

2. Status Operasi:
   - Beban stabil
   - Ambient normal
   - Inlet normal
   - No mechanical issues

3. Kemungkinan Penyebab:
   - Kompressor fouling
   - Combustor issue
   - IGV malfunction
   - Air/fuel ratio tidak optimal

Tindakan Segera:
1. Monitor trending setiap 5 menit
2. Check IGV position & response
3. Verifikasi fuel gas quality
4. Review combustor parameters
5. Prepare load reduction if temp > 550°C

Eskalasi Required:
- Notify shift supervisor
- Alert maintenance team
- Document di log book
- Prepare contingency plan

Batas Operasi:
- WARNING: >545°C
- TRIP: >565°C
- Trend limit: 30°C/jam

Engineer Mekanik

"Klasifikasikan prioritas perbaikan (IMMEDIATE/PLANNED/ROUTINE) untuk kondisi berikut: Feed water pump mengalami kenaikan vibrasi dari 4.5 mm/s ke 6.8 mm/s dalam satu minggu, dominan di 1X running speed, bearing temp normal."

Klasifikasi: PLANNED

Analisis Kondisi:
1. Vibrasi Level:
   - Current: 6.8 mm/s (WARNING)
   - Baseline: 4.5 mm/s
   - Rate: +0.33 mm/s per hari
   - ISO Standard: Alert 7.1 mm/s

2. Karakteristik:
   - 1X dominant = unbalance/misalignment
   - Bearing temp OK = no immediate bearing risk
   - Trend gradual = developing issue

3. Risk Assessment:
   - Equipment: Medium
   - Production: Low
   - Safety: Low
   - Environmental: Low

Justifikasi PLANNED:
1. Masih di bawah trip limit
2. Trend kenaikan moderate
3. No secondary symptoms
4. Backup pump available

Rekomendasi:
1. Schedule repair next weekend
2. Prepare balancing equipment
3. Check alignment
4. Monitor setiap 4 jam
5. Prepare spare parts

Monitoring Requirements:
- Vibration: every 4 hours
- Bearing temp: continuous
- Performance parameters
- Noise level changes

Engineer Listrik

"Interpretasikan hasil tes DGA trafo berikut dan tentukan kondisinya: H2: 150 ppm CH4: 120 ppm C2H2: 3 ppm C2H4: 150 ppm C2H6: 45 ppm CO: 500 ppm CO2: 3500 ppm Baseline 6 bulan lalu normal semua."

Analisis DGA:

1. Gas Ratios:
   CH4/H2 = 0.8 (Normal < 0.1)
   C2H2/C2H4 = 0.02 (Normal < 0.1)
   C2H4/C2H6 = 3.33 (High > 3)
   CO2/CO = 7 (Normal 3-10)

2. Nilai Kritis:
   - C2H4 (150 ppm) > IEEE limit (100 ppm)
   - CO (500 ppm) > IEEE limit (350 ppm)
   - C2H2 masih normal
   - H2 borderline

3. Pattern Matching:
   - High C2H4/C2H6: Thermal fault
   - Low C2H2/C2H4: No arcing
   - Elevated CO: Paper aging

Diagnosis: Thermal Fault T3 (>700°C)
Severity: MEDIUM-HIGH

Rekomendasi:
1. Increase sampling frequency to monthly
2. Perform IR scan on tank and connections
3. Check loading history
4. Review cooling system operation
5. Plan for oil treatment

Required Actions:
- Monitor load carefully
- Check cooling fans/pumps
- Prepare contingency plan
- Schedule maintenance window

Teknisi I&C

"Berikan troubleshooting steps untuk kondisi berikut: Flow transmitter FT-101 menunjukkan pembacaan 0% konstan, tidak ada alarm pada DCS, loop power OK, pressure tap clear, transmitter baru dikalibrasi bulan lalu."

Troubleshooting Sequence:

1. Initial Checks:
   - Verify 24VDC power supply
   - Check cable continuity
   - Verify grounding
   - Inspect physical damage
   - Check impulse lines

2. Signal Path Testing:
   Loop Check:
   - Measure 4-20mA at transmitter
   - Measure at junction box
   - Measure at marshalling panel
   - Check DCS input card

3. Transmitter Diagnostics:
   - Connect HART communicator
   - Check configuration
   - Verify range settings
   - Read error messages
   - Check damping value

4. Process Verification:
   - Compare with parallel measurements
   - Check upstream/downstream pressures
   - Verify process conditions
   - Review recent changes

Likely Causes (Ranked):
1. Electronics failure (most probable)
2. Circuit open/short
3. Configuration error
4. Process isolation
5. DCS card issue

Required Tools:
- Multimeter
- HART communicator
- Calibrator
- Test leads
- Loop drawing

Documentation:
- Update maintenance log
- Record findings
- Note serial number
- Document settings
- Take backup configuration

Engineer Efisiensi

"Analisis penyebab kenaikan heat rate sebesar 250 kJ/kWh dari baseline dengan kondisi: - Beban stabil 200 MW - Condenser vacuum 0.085 bar - HRSG approach temp +5°C - Fuel composition normal - Make up water meningkat 2 ton/jam"

Performance Impact Analysis:

1. Heat Rate Deviation:
   - Current HR increase: 250 kJ/kWh
   - Percentage: ~3.5% degradation
   - Impact: ~2.5M/bulan fuel cost
   
2. Contributing Factors:
   a) HRSG Performance:
      - Approach temp +5°C = 100 kJ/kWh
      - Potential fouling
      - Stack temp likely high
   
   b) Cycle Losses:
      - Make up +2 T/h = 75 kJ/kWh
      - Steam/water leaks likely
      - Blowdown may be high
   
   c) Condenser:
      - Vacuum normal
      - Minimal impact

3. Root Causes (Probability):
   HIGH:
   - HRSG tube fouling
   - Steam/water leaks
   - High blowdown rate
   
   MEDIUM:
   - Combustion issues
   - Component degradation
   
   LOW:
   - Instrumentation error
   - Fuel quality

Immediate Actions:
1. HRSG inspection
2. Steam leak survey
3. Review water chemistry
4. Check blowdown control

Long-term Recommendations:
1. Schedule HRSG cleaning
2. Optimize water chemistry
3. Review maintenance plan
4. Update monitoring system

Teknisi Predictive Maintenance

"Prediksi remaining useful life berdasarkan data berikut: Motor pompa boiler feed: - Vibrasi naik 0.2 mm/s per minggu (current 5.5 mm/s) - Bearing temp naik 2°C per bulan (current 75°C) - Iron content di oil naik 3 ppm per bulan (current 25 ppm) - Baseline: vibrasi 3 mm/s, temp 65°C, Fe 15 ppm Alarm limits: vibrasi 7 mm/s, temp 85°C, Fe 40 ppm"

Remaining Life Analysis:

1. Trend Calculations:
   Vibrasi:
   - Current gap to limit: 1.5 mm/s
   - Rate: 0.2 mm/s per minggu
   - Time to limit: 7.5 minggu
   
   Temperature:
   - Gap to limit: 10°C
   - Rate: 2°C per bulan
   - Time to limit: 5 bulan
   
   Iron Content:
   - Gap to limit: 15 ppm
   - Rate: 3 ppm per bulan
   - Time to limit: 5 bulan

2. Failure Mode Analysis:
   Primary indicators:
   - Bearing wear (Fe content)
   - Mechanical looseness (vibrasi)
   - Friction increase (temp)
   
   Most critical: Vibrasi

3. Confidence Level:
   - Data quality: High
   - Trend linearity: Good
   - External factors: Minimal
   - Prediction confidence: 85%

4. RUL Prediction:
   Worst case: 7.5 minggu
   Best case: 5 bulan
   Most probable: 2 bulan

Rekomendasi:
1. Schedule replacement dalam 6 minggu
2. Increase monitoring frequency
3. Prepare spare parts
4. Plan production adjustment

Monitoring Plan:
- Vibrasi: 2x per minggu
- Temp: continuous
- Oil analysis: 2 minggu sekali