Victor Marine OWS 15ppm & STP Sewage Treatment Plant Service

BLUF: MarineListing delivers 24/7 Class-approved annual calibration, coalescing matrix refurbishment, automated diverter valve overhaul, and genuine spare parts supply for Victor Marine Oily Water Separators (OWS) and Sewage Treatment Plants (STP) worldwide. Specializing in the Victor Marine CS-series (CS-0.5 to CS-10), S-15 bilge alarm monitors, OCM 12 oil content meters, and STP biological sewage treatment units (STP 15–100), our certified marine environmental technicians restore 100% operational integrity. Operating across major global bunkering and shipping hubs—including Singapore, Rotterdam, Fujairah, Houston, and Busan—we ensure strict statutory compliance with IMO MEPC.107(49), IMO MEPC.227(64), MARPOL Annex I, and MARPOL Annex IV mandates, guaranteeing zero Port State Control (Paris MoU, USCG) detentions.

1. Statutory Mandates, Classification Rules & Class Survey Rigor

Shipboard oily bilge water and sewage treatment systems represent the highest-risk environmental compliance areas on commercial vessels. Discharging bilge water exceeding $15\text{ ppm}$ oil content, bypassing oil filtering equipment ("magic pipes"), or operating with uncalibrated 15ppm bilge alarms triggers severe criminal prosecution, multi-million dollar fines, and immediate vessel arrest by the US Coast Guard and global Port State Control authorities.

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|                                  STATUTORY POLLUTION CONTROL BLUEPRINT                             |
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|  MARPOL Annex I, Reg 14 & 15   --> Oil Filtering Equipment (15 ppm Alarm & Auto-Stopping Device)   |
|  IMO Res. MEPC.107(49)         --> Revised Guidelines & Specs for Pollution Prevention Equipment   |
|  MARPOL Annex IV, Reg 9        --> Sewage Systems Standards & Effluent Discharge Limits            |
|  IMO Res. MEPC.227(64)         --> Standards for Sewage Treatment Plants in Special Areas (Baltic) |
|  USCG 33 CFR Part 155          --> Oil Pollution Prevention Regulations for Vessels                |
|  IACS UR M77                   --> Installation & Survey of Pollution Prevention Equipment         |
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Statutory Inspection & Survey Intervals

• Annual 15ppm Bilge Alarm Calibration & Function Test (MEPC.107(49)):
  • Calibration of the optical turbidity sensor cell (Victor Marine S-15 / OCM 12) using Class-certified Formazin / secondary calibration standards ($0.0\text{--}30.0\text{ ppm}$).
  • Verification of the automated 3-way overboard diverter valve fail-safe actuation ($< 2\text{ seconds}$ closure upon $15\text{ ppm}$ exceedance or electrical power loss).
  • Proof testing of the clean water flushing interlock to ensure sensor cannot be falsely flushed during active overboard discharge.
  • Audit of internal memory data logging (minimum 18 months electronic record retention of date, time, 15ppm alarm state, and separator operating status).
• Annual OWS Separator Vessel & Coalescing Filter Inspection:
  • Extraction and ultrasonic cleaning / replacement of first-stage oleophilic coalescer packs and second-stage granular matrix adsorption media.
  • Inspection of the automatic oil level interface capacitive sensors and pneumatic oil release solenoid valves.
• Annual Sewage Treatment Plant (STP) Effluent Quality Audit (MEPC.227(64)):
  • Effluent microbiological and chemical parameter testing:
    • Total Suspended Solids (TSS) $\le 35\text{ mg/L}$ (or $35\text{ mg/L } \times Q_{\text{in}} / Q_{\text{eff}}$).
    • Biochemical Oxygen Demand ($\text{BOD}_5$) $\le 25\text{ mg/L}$.
    • Chemical Oxygen Demand (COD) $\le 125\text{ mg/L}$.
    • Coliform bacteria: $< 100\text{ cfu / 100 mL}$.
    • Total Nitrogen (Special Areas): $< 20\text{ mg/L}$ (or $70%$ reduction); Total Phosphorus: $< 1.0\text{ mg/L}$ (or $80%$ reduction).

Classification Society Compliance Matrix

2. Engineering Architecture & Diagnostic Systems

The Victor Marine CS OWS utilizes a high-efficiency 3-stage separation process combining gravity settling, oleophilic plate pack coalescence, and granular carbon/resin adsorption to separate heavy residual oils and micro-emulsions without chemical dosing.

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|                         VICTOR MARINE OWS & S-15 BILGE ALARM ARCHITECTURE                          |
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|                                                                                                    |
|   [ Oily Bilge Water Sump ]                                                                        |
|              │                                                                                     |
|              ▼                                                                                     |
|   [ Progressive Cavity Feed Pump (Low Shear) ]                                                     |
|              │                                                                                     |
|              ▼                                                                                     |
|   [ Stage 1: Gravity & Coalescer Pack Separator ] ──► [ Oil Interface Sensor ] ──► [ Waste Oil Tk]|
|              │                                                                                     |
|              ▼                                                                                     |
|   [ Stage 2: Secondary Granular Matrix Column ]                                                    |
|              │                                                                                     |
|              ▼ (Sample Flow: 1.0 - 2.5 L/min)                                                      |
|   [ Victor Marine S-15 / OCM 12 Bilge Alarm ] ──────────────────────────────────────────┐          |
|              │                                                                          │          |
|              ├─────────────── [ Oil Content < 15 ppm ] ──► [ Automated 3-Way Valve ]    │          |
|              │                                                     │                    │          |
|              ▼                                                     ▼                    ▼          |
|   [ Clean Overboard Discharge ] ◄────────────────────────────── (Pass)               (Fail)        |
|                                                                                         │          |
|   [ Recirculation Back to Bilge Holding Tank ] ◄────────────────────────────────────────┘          |
|                                                                                                    |
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Optical Turbidity & Multi-Wavelength Hydrocarbon Equations

The Victor Marine S-15 and OCM 12 monitors utilize dual-wavelength optical scattering (near-infrared $880\text{ nm}$ and visible spectrum $560\text{ nm}$) to differentiate between hydrocarbon droplets and inorganic non-oil suspended solids:

$$I_{\text{scatter}} = I_0 \cdot \left[ K_{\text{oil}} \cdot C_{\text{oil}} \cdot f(d_{\text{droplet}}) + K_{\text{solids}} \cdot C_{\text{solids}} \cdot g(d_{\text{particle}}) \right]$$

The calculated hydrocarbon concentration ($C_{\text{oil}}$ in ppm) is resolved by matrix inversion:

$$C_{\text{oil}} = \frac{I_{880\text{ nm}} - \beta \cdot I_{560\text{ nm}}}{\alpha \cdot K_{\text{calibration}}}$$

Where:

• $I_0$ = Incident light intensity emitted by optical LED source.
• $\beta$ = Solid particle compensation coefficient.
• $\alpha$ = Temperature-adjusted optical transmission factor.
• $K_{\text{calibration}}$ = Certified calibration constant verified with Formazin standards.

Stokes' Law Coalescence Velocity Mathematics

The rising velocity ($v_t$) of microscopic oil droplets through the Victor Marine coalescer matrix is governed by Stokes' Law:

$$v_t = \frac{g \cdot d^2 \cdot (\rho_{\text{water}} - \rho_{\text{oil}})}{18 \cdot \mu_{\text{water}}}$$

The oleophilic corrugated plate pack increases droplet diameter $d$ by $> 400%$, increasing rising velocity by a factor of 16 to enable rapid separation in compact shipboard footprints.

3. Step-by-Step Standard Operating Procedure (SOP)

Our marine environmental service engineers adhere to an ISO 9001:2015 and MEPC.107(49) accredited 5-stage servicing workflow.

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|                         5-STAGE VICTOR MARINE OWS & STP SERVICING WORKFLOW                         |
+----------------------------------------------------------------------------------------------------+
|  STAGE 1: System Operational Diagnostic Dump, Data Log Audit & Safety Interlock Pre-Check         |
|  STAGE 2: S-15 / OCM 12 Bilge Alarm Optical Cell Cleaning & Formazin Reference Calibration         |
|  STAGE 3: Automated 3-Way Overboard Diverter Valve Actuation & Clean Water Flushing Proof Test     |
|  STAGE 4: OWS Coalescing Matrix Extraction, Vessel Descaling & Granular Adsorption Media Renewal   |
|  STAGE 5: STP Aeration Blower Overhaul, Live Effluent Chemical Testing & Class Endorsement        |
+----------------------------------------------------------------------------------------------------+

Stage 1: Diagnostic Dump & Data Log Audit

1. Memory Interrogation: Connect dedicated interface tool to the S-15 / OCM 12 monitor. Download the encrypted 18-month operation log (operating hours, alarm triggers, valve status).
2. Oil Record Book Reconciliation: Cross-reference downloaded S-15 timestamps against the vessel's official Oil Record Book (Part I) bilge discharge entries; confirm perfect historical synchronization.
3. Safety Isolation: Lock out bilge feed pump, close suction/discharge isolation valves, and drain separator pressure vessel into sludge holding tank.

Stage 2: Optical Bilge Alarm Calibration

1. Glass Tube Extraction: Dismount the optical sample tube. Inspect for iron oxide stains, oil film glazing, or micro-scratches. Clean optical surfaces with approved isopropyl solvent and lint-free wipes.
2. Zero Calibration: Fill measuring cell with degassed zero water ($< 0.1\text{ NTU}$). Adjust optical zero potentiometer until display reads $0.0\text{ ppm} \pm 0.2\text{ ppm}$.
3. Span Calibration: Insert Class-certified secondary optical test glass standard ($15.0\text{ ppm} \pm 0.5\text{ ppm}$). Verify alarm relay energization and LED display accuracy.

Stage 3: Automated 3-Way Overboard Valve Proof Test

1. Response Time Test: Inject a simulated $20\text{ ppm}$ optical signal into the S-15 monitor. Measure 3-way diverter valve stroke time; ensure complete closure of the overboard port and 100% recirculation to the bilge tank in $< 2.0\text{ seconds}$.
2. Clean Water Tamper Interlock: Attempt to initiate overboard discharge while clean water flushing valve is open. Confirm the automated control system prevents discharge and activates the tamper alarm.
3. Power Loss Fail-Safe: Cut $24\text{ VDC} / 115\text{ VAC}$ power supply to the S-15 monitor; verify spring-return pneumatic actuator immediately snaps the diverter valve into full recirculation mode.

Stage 4: OWS Coalescer & Granular Matrix Refurbishment

1. Vessel Opening: Open Stage 1 access hatch. Extract corrugated oleophilic coalescer packs; inspect for bitumen blinding or structural damage. Ultrasonic clean or renew packs.
2. Stage 2 Granular Media Renewal: Vacuum extract spent granular carbon/resin adsorption media from Stage 2 column. Flush vessel interior, inspect sacrificial zinc anodes, and refill with fresh certified Victor Marine matrix media.
3. Level Probe Testing: Test capacitance oil level probe in Stage 1; verify automatic oil drain solenoid opens upon detecting oil layer thickness $> 150\text{ mm}$.

Stage 5: STP Blower Overhaul, Effluent Testing & Class Sign-Off

1. STP Blower & Diffusers: Overhaul aeration rotary blowers (replace air filters, grease bearings). Inspect bottom bubble diffusers for blockage; verify dissolved oxygen $> 2.0\text{ mg/L}$ in aeration tank.
2. Effluent Sampling: Collect effluent sample from discharge chamber. Perform photometric analysis of suspended solids (TSS $< 35\text{ mg/L}$) and residual chlorine / UV intensity.
3. Class Certification: Affix tamper-proof calibration security seal to S-15 enclosure; issue official Certificate of Calibration and obtain Class Surveyor endorsement (DNV, ABS, LR, ClassNK).

4. Diagnostic Trouble Codes (DTC) & Failure Mode Matrix

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|                         VICTOR MARINE OWS & S-15 DIAGNOSTIC FAULT MATRIX                           |
+----------------------------------------------------------------------------------------------------+
|  Code: AL-S15-01 | Sample Flow Failure / Optical Measuring Cell Flow Rate Low (< 0.5 L/min)        |
|  Code: AL-S15-05 | Optical Cell Dirty Alarm / High Background Attenuation Error                    |
|  Code: AL-S15-09 | Oil Content Exceeded (> 15.0 ppm Overboard Discharge Trip Activated)            |
|  Code: AL-OWS-14 | High Oil Interface Level Alarm / Oil Discharge Solenoid Valve Sticking          |
|  Code: AL-STP-22 | STP Aeration Pressure Low (< 0.15 bar) / Biological Digester Septic Alarm       |
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5. Global Port Coverage & Emergency Attendance Hubs

MarineListing maintains rapid-deployment environmental technicians equipped with certified Formazin calibration kits, replacement optical cells, coalescer packs, and genuine Victor Marine spares worldwide.

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|                      GLOBAL OWS & STP DISPATCH & MOBILIZATION MATRIX                               |
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|  PORT HUB             | BERTH / OPL ATTENDANCE | WORKSHOP & LAB CAPABILITY| MOBILIZATION TIMELINE  |
|  Singapore (SGP)      | Jurong, Tuas, OPL      | Calibrated Formazin Lab  | Immediate (2-4 Hours)  |
|  Rotterdam / ARA      | Europoort, Botlek      | Complete Coalescer Stock | Immediate (2-4 Hours)  |
|  Fujairah (UAE)       | Port of Fujairah, OPL  | OWS Spares & Calibration | Immediate (3-6 Hours)  |
|  Houston / GOM (USA)  | Houston Ship Channel   | USCG Approved Team       | Immediate (4-6 Hours)  |
|  Busan (KOR)          | Busan New Port, Yeongdo| PCB & Optical Cleanroom  | Immediate (2-4 Hours)  |
|  Antwerp / Zeebrugge  | Port of Antwerp        | Fast Van Response Team   | Immediate (2-4 Hours)  |
|  Shanghai / Ningbo    | Yangshan, Waigaoqiao   | Full Media Replacement   | Immediate (4-6 Hours)  |
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6. Comprehensive Technical FAQ

Q1: What makes the Victor Marine S-15 15ppm Bilge Alarm tamper-proof per MEPC.107(49)?

A: Under IMO MEPC.107(49), the 15ppm bilge alarm must be secured against unauthorized adjustment. The Victor Marine S-15 features tamper-evident security wire seals on the calibration housing and an internal cryptographic memory chip that logs all power cuts, calibration changes, alarm trips, and valve statuses. Any attempt to bypass the unit or flush it with clean water during discharge is permanently logged and visible to Class and USCG inspectors.

Q2: How often must the 15ppm bilge alarm undergo formal calibration?

A: According to IMO Resolution MEPC.107(49) and IACS guidelines, 15ppm bilge alarms must be checked for operational accuracy during every annual statutory survey (maximum 12-month interval) or whenever the equipment is serviced. The certificate of calibration must be signed by an authorized service provider and kept onboard adjacent to the Oil Record Book.

Q3: Why does bilge water fail to separate even when the OWS coalescers are clean?

A: Chemical emulsification is the most common cause. When engine room washdowns utilize standard industrial detergents or degreasers, the chemicals stabilize oil-in-water emulsions into microscopic droplets ($< 1\ \mu\text{m}$) that bypass mechanical coalescers. Only quick-separating (quick-break) detergents certified to IMO standards should be used in machinery bilge spaces.

Q4: What is required for sewage treatment plants operating in the Baltic Sea Special Area?

A: Under IMO Resolution MEPC.227(64) Section 4.2, passenger vessels operating in the Baltic Sea must remove nutrients in addition to standard biological treatment. The STP must reduce Total Nitrogen by $\ge 70%$ ($< 20\text{ mg/L}$) and Total Phosphorus by $\ge 80%$ ($< 1.0\text{ mg/L}$), requiring specialized anoxic de-nitrification and coagulant chemical dosing skids serviced by our engineers.

Q5: What genuine Victor Marine spare parts are maintained in stock?

A: We stock: (1) S-15 and OCM 12 replacement optical glass sample tubes and wiper seals; (2) Pre-calibrated S-15 sensor heads and main processor boards; (3) Stage 1 oleophilic coalescer plate packs; (4) Stage 2 granular matrix adsorption replacement media; (5) Automatic 3-way pneumatic diverter valves and solenoid coils; and (6) STP air blower overhaul kits and UV sterilizer lamps.

7. Service Engagement, Quotation & Mobilization Protocol

To book an annual 15ppm bilge alarm calibration, OWS coalescer overhaul, or order genuine parts:

1. Provide System Details: Email vessel name, IMO number, current port/anchorage, separator model (e.g., Victor Marine CS-2.0, S-15), and current fault descriptions to environmental@marinelisting.com.
2. Calibration Manifest & Media Allocation: Our Environmental Superintendent prepares certified optical test standards, fresh coalescer packs, or granular matrix refill kits.
3. Onboard Attendance & Class Sign-Off: Our certified marine technician attends your vessel at berth or OPL anchorage, completing calibration, proof testing, and issuing official Class-approved certificates within hours.