Roben Mfg., Inc. fabricates custom lethal-service heat exchangers to the specific, stringent requirements ASME Section VIII imposes when the contained fluid is lethal — the highest tier of containment rigor in the code.
What a Lethal-Service Heat Exchanger Is
Lethal service is a defined ASME Section VIII category for fluids so dangerous that a small leak could be fatal. The code mandates specific measures: full radiographic examination of welds, mandatory post-weld heat treatment, prohibition of certain joint types, and rigorous construction — making lethal-service exchangers the most tightly controlled containment vessels Roben builds.
Why Lethal-Service Heat Exchangers Matter
When a fluid is lethal, the exchanger’s integrity is a life-safety barrier and the code leaves nothing to discretion. Building strictly to ASME lethal-service rules — full RT, PWHT, qualified joints, and documentation — ensures the containment these fluids demand and the compliance regulators require.
Specifications & Capabilities
- Built to ASME Section VIII lethal-service requirements
- Full radiographic examination of all applicable welds
- Mandatory post-weld heat treatment
- Prohibited joint types excluded; strength-welded joints
- Double-tubesheet/containment features where specified
- Materials qualified for the lethal medium and conditions
- Complete documentation and traceability
Certifications & Codes
- ASME Boiler & Pressure Vessel Code (BPVC) Section VIII, Div. 1 — U-stamp
- ASME Section VIII, Div. 2 — available on request
- ASME Section IX — qualified welding procedures and welders
- National Board registration — R-stamp (NBIC)
- TEMA standards for shell-and-tube construction
- HTRI thermal design and rating
- PED 2014/68/EU — CE marking with Notified Body coordination
- Canadian Registration Number (CRN) — all provinces
- API 510 / 620 / 650 where applicable
- NACE MR0175 / ISO 15156 — sour-service compliance
Frequently Asked Questions
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