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embedded work seriously familiar with drawings and specification requirements, check the consistency of the civil engineering drawings and installation drawings, the actual inspection embedded parts, the location of the hole, style and size, cooperate with construction in a timely manner all kinds of holes reserved and embedded pipe, the embedded parts of embedding, ensure embedding is correct and omission.

3. The pipeline alignment of surveying and mapping. Before the measurement shall be carried out with construction unit (or supervisor) measurement datum transfer, the use of measuring instruments shall JingJian qualified and within the period of validity, and conform to the requirements of the accuracy of measurement. According to construction drawings for in-situ measuring unreeling, to determine the steam-water pipes and its elevation and location. Using computer CAD software or BIM technology such as space simulation, collision detection, found the problem in advance, avoiding the phenomenon of pipeline between fight.

5 P180.

4. Pipeline inspection of components. Piping components including of piping and piping support parts, should be carefully checked before installed components specifications, material quality, appearance quality and the quality certificate, etc., there is a requirement for the reinspection for components should also conduct re-inspection, such as: alloy steel pipe and components should be carried out inspection, etc.

(1) pipe flow meter and pressure gauge should be used for calibration verification, equipment and piping of the relief valve should be set by has the qualification of the unit.

(2) valve should be in accordance with the specification requirements for strength and leak test, the test should be in each batch number (same brand, same model and specifications) of the spot check by 10%, and no less than one. The strength of the valve and leak test, shall meet the following requirements:

The strength test pressure valve is 1.5 times of the nominal pressure; Leak test pressure is

1.1 times the nominal pressure; Test pressure in the test duration shall remain unchanged, and shell packing and clapper sealing surfaces without leakage. Installed on the ZhuGanGuan closed-circuit valves, cut off the role should be individually do strength test