Bulk Cargo
Table of Contents
1. Why Temperature Monitoring Is Mandatory /// 2. Practice & Inspections /// 3. Typical Bulk Cargo Types & Associated Risks ///
4. IMSBC Code – Limit Values /// 5. Why Portable Solutions Are the Industry Standard /// 6. Product Solution: CargoTemp Roller ///
7. FAQ – Frequently Asked Questions & Answers
Safety & compliance through precise cargo hold temperature monitoring in bulk carriers – in line with the IMSBC Code and SOLAS. With the CargoTemp Roller, SIKA provides the proven solution for ship crews and operators.
✅ Complies with IMSBC Code temperature limits
✅ Documentation for RightShip and PSC inspections
✅ Operational safety through self-tests and signal monitoring
Why Temperature Monitoring Is Mandatory
Bulk cargo temperature monitoring is essential for safety and compliance.
According to the IMSBC Code, bulk cargoes such as coal, DRI, grain, oilseeds, and fertilizers must be checked regularly.
SOLAS regulations and Port State Control (PSC) enforce compliance.
RightShip inspections require documented evidence – missing measurements can lead to rejected cargo and costly delays.
Practice & Inspections – What Matters
In shipping, evidence is mandatory. PSC authorities and RightShip inspections require verifiable documentation of cargo hold temperature monitoring. Key questions include:
- Are IMSBC Code temperature limits observed?
- Are measurements taken in different holds and at multiple points?
- Is monitoring performed regularly and consistently?
Experience shows: Transparent records speed up inspections and help avoid costly detentions or cargo refusal.
Typical Cargoes & Risks
Coal Cargo Temperature Monitoring on Ships
Coal can self-heat within the cargo hold—particularly low-rank or lignite-type coal—raising temperatures and greatly increasing the risk of fire or explosion. The IMSBC Code mandates that coal exceeding 151°F (55°C) must not be loaded, as self-heating accelerates rapidly in oxygen-rich environments.
Grain Cargo Temperature Monitoring
Grain and oilseeds are prone to fermentation, mold growth, and condensation, especially when exposed to heated structures such as steam pipes or heated tanks. Even moderate temperatures between 140°F and 131°F (40°C and 55°C) can cause substantial quality loss, particularly under high moisture or inadequate ventilation.
DRI Cargo Temperature Monitoring (IMSBC Code)
Direct Reduced Iron (DRI) is known to react vigorously upon contact with moisture, potentially generating high temperatures and releasing hydrogen — thus elevating the risk of explosion. Temperature increases of up to 86°F (30°C) above ambient have been documented after handling. The IMSBC Code requires strict ventilation and monitoring procedures for DRI, especially for Types C and D.
Other Bulk Cargoes
for Monitoring
Other bulk cargoes — such as fertilizers, ores, or oil pellets — carry similar hazard profiles: moisture-induced reactions, dust emissions, or chemical heat generation can lead to heat buildup, gas release, or load damage. Only comprehensive cargo hold temperature monitoring ensures complete safety and adherence to IMSBC standards.
IMSBC Code Temperature Limits (Examples)
- Coal: max. 131°F (55°C) before loading
- DRI: max. 1202°F (650°C)
- Other bulk cargoes: specific limits according to IMSBC Code
These values must be monitored and documented to prove compliance.
Why Portable Solutions Are the Standard
Fixed sensor systems inside cargo holds are costly and difficult to retrofit. Crews and ship operators therefore rely on portable cargo hold thermometers, which:
- can be used flexibly in different holds,
- ensure maximum safety,
- work reliably and maintenance-free even under harsh conditions.
The CargoTemp Roller combines easy handling with high measurement accuracy – and has become the global standard solution for inspections and routine checks.
CargoTemp Roller from SIKA: The seaworthy
bulk cargo thermometer for marine use
The CargoTemp Roller from SIKA is the trusted solution for bulk cargo temperature monitoring in ships.
Technical Features:
- Pt1000 sensor for high-precision readings
- 35 m FEP cable with 5 m markings
- Clear, easy-to-read LCD display
- Battery-operated – portable and flexible
- Automatic self-tests and signal monitoring
- Rugged, marine-grade design for everyday use on board
Maximum crew safety
Full compliance with IMSBC Code & SOLAS
Documentation for RightShip & PSC inspections
Proven in practice for years
Marine Digital Thermometer
Type CargoTemp Roller ETC
Precise cargo hold temperature monitoring up to 302°F (150°C). Equipped with a Pt1000 sensor, large LCD display, and a 35 m temperature- and oil-resistant FEP cable with depth markings every 5 m), the device supports up to 50 N tensile load. Battery-powered (display side) with up to 10 years of service life, it is the ideal solution for safe and standards-compliant use in bulk carriers under demanding conditions.
FAQ – Frequently Asked Questions
What IMSBC temperature limits apply to coal?
Coal must not exceed 131°F (55°C) before loading.
Is regular temperature monitoring mandatory?
Yes – the IMSBC Code and SOLAS require continuous monitoring and proper documentation.
Which cargoes are most critical?
Coal, DRI, grain, oilseeds, and fertilizers – all covered under the IMSBC Code.
Is the CargoTemp Roller officially recognized?
Yes – it supports operators worldwide in meeting IMSBC, SOLAS, and inspection requirements.
Does the CargoTemp Roller perform automatic self-tests?
Yes. On start-up the device automatically checks the sensor and continuously monitors the signal for plausibility. Errors such as a sensor break are shown on the display. The CargoTemp Roller is also maintenance-free.