This DN-07 Service Laying checklist supports safe, compliant electrofusion and utility pipe installation. It covers pipe and fitting compatibility, required fusion heating and cooling times, voltage and generator power checks, and the 20% LEL safety threshold for gaseous atmospheres. Steps include site preparation, contamination control, approved scraping, re-rounding and restraining clamps, penetration depth marking, and handling of couplers. The process guides generator and control box setup, fusion timing, cooling, indicator checks, and post-fusion verification via print or data retrieval, with inspector sign-off.
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