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Indus HydraulicsIndustrial Components Co.
Oilfield & pressure control

BOP control hose: why fire survival is half the specification

An API 16D control hose is rated on pressure like anything else — and then on something most hose never has to do: keep working inside a fire for long enough to shut the well in.

Anjali Krishnan·Technical Director··3 min read

Almost every hose specification is about containing pressure. BOP control hose has a second requirement that reframes the first: it has to still be doing its job while it is on fire, because the moment it is most needed is the moment the rig is burning.

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The rating that matters.

What is the fire rating on a BOP control hose?

The Fireshield constructions we supply are rated to survive 1,300 °F — 704 °C — for 30 minutes, per API Spec 16D and API RP 17H, with fire performance verified by test to ISO 15540. Pressure rating is 5,000 psi working; the fire requirement is what distinguishes the product.

What the specification asks for
RequirementValueSource
Working pressure5,000 psiAPI Spec 16D
Fire survival1,300 °F (704 °C) for 30 minutesAPI Spec 16D / API RP 17H
Fire test methodISO 15540Test standard
Size range1/4" – 1"As supplied

Thirty minutes is not an arbitrary number. It is a functional window — long enough for the control system to operate the stack and secure the well while the fire is happening. That is why the requirement is survival with function rather than simply resistance to burning, and why it is demonstrated by a test method rather than inferred from the cover compound.

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Tested, not asserted.

The same logic applies to the assembly rather than the hose alone. The end fittings, the crimp and any protective sheathing are part of what has to survive, which is why control hose is bought as a certified assembly rather than built from bulk hose and whatever ends are in stock.

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Where else fire rating appears.

Fire-rated construction is not confined to the control circuit. The Megashield 5000 assemblies we supply carry the same API Spec 16D and ISO 15540 basis at 5,000 psi across a 1/4" to 2" range, and the Flameshield low-pressure oilfield hose carries a flame-resistant cover for general rig service at far lower pressures. The requirement follows the consequence of the fire, not the pressure of the line.

Fire-rated oilfield constructions

Common questions

Does a fire-rated hose survive indefinitely in a fire?

No. The rating is a duration — 30 minutes at the stated temperature on these constructions. It is designed to keep the system functional through the window in which the well can be secured, not to be permanently fireproof.

Can I add a fire sleeve to a standard hose instead?

A sleeve may help a general hydraulic line survive radiant heat, but it does not turn a standard hose into a 16D control hose. The qualification is of the assembly against a test method, and it cannot be retrofitted.

Is API RP 17H the same as API Spec 16D?

They are different documents that both bear on this equipment — 16D is the specification for control systems, RP 17H a recommended practice relevant to subsea intervention. Our Fireshield constructions cite both for the fire rating.

What documentation should come with a control hose?

The certification for the assembly as supplied, including the fire rating basis. Ask for it at order — as with any certified assembly, obtaining it later is much harder than specifying it up front.

BOP equipment and spares

Control units, accumulators, ram blocks and elastomers alongside the control hose.

Figures verified · Ratings from the constructions we stock, resting on the manufacturers’ API certification and ISO 15540 test basis.

Replacing control hose?

Tell us the stack and the circuit. We supply certified assemblies with the fire-rating documentation, and our services team handles BOP recertification alongside.

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