Targeted RFI — Q-32859
Client_Profile: ADNOC
Status Note (Episode 3)
- C01 (IIC T3 for H₂) — Closed. Decision: Configure IIC T3 end‑to‑end; see
CF04/output/Appendix3_Technical_Clarification_List.md. - C02 (Power topology) — Closed. Decision: Single 415 VAC 3Φ to chiller; chiller provides 230/240 VAC 1Φ to shower; see
CF04/output/Appendix3_Technical_Clarification_List.md.
Context: Prefilled from offer/datasheets. MR present; MR Section 2.0 Applicable Documents and Section 12.2 Hazardous Area to be fully extracted in CF02. The following require client confirmation to avoid misalignment.
- Hazardous Area Gas Group — IIC requirement for H₂ units
- Observation (evidence):
- Tank shower datasheet states: “ATEX Zone 1 & 2. Gas groups IIA & IIB. Temp Class T3 (IIC available)” (Datasheet EXP‑MH‑14KS/1500, lines 105–111).
- Chiller datasheet: “Hazardous Area, IECEx, Zone‑1; II B, T3” (Chiller Datasheet, lines 103–105).
- ADNOC baseline for H₂ units typically IIC T3 end‑to‑end (Client_Profile_Baselines.md).
- Question:
- Please confirm whether IIC T3 classification is required for the H₂ service units in this MR. If yes, we will select the IIC variants for both the tank shower electrical/instrument items and the chiller assembly to ensure end‑to‑end IIC T3 compliance.
- Power supply topology — external feeds vs chiller‑provided 230 VAC
- Observation (evidence):
- Offer indicates chiller supply 415 VAC 3Φ with a 230 VAC 1Φ feed provided to the safety shower (Offer Q‑32859‑1 p.4, lines 364–366).
- Tank shower datasheet lists 240 V 1Φ for immersion heater (Datasheet EXP‑MH‑14KS/1500, lines 109–113).
- Question:
- Please confirm the intended power topology: Will the chiller’s 230 VAC feed be accepted as the source for the shower’s immersion heater and light, with a single external 415 VAC 3Φ feed to the chiller, or do you require separate external feeds? No change in offer is proposed; this is to align with site power distribution.
No unreadable/unsupported files identified at intake. If any MR‑referenced document is missing upon extraction of MR Section 2.0, we will enumerate exact titles and raise additional lines accordingly (with paths).