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Through examination, 1# heat pump unit stops, but the valve connected with pump does not close, it results in water by-pass.
The leaving water temperature of 2# unit is 42℃, it changes into 40℃ after the water mixes with by-pass water of 1# unit.
On the promise that the temperature of end user meets requirements, the temperature of supply water shall try to lower down, the supply water temperature lowers down 1℃, the electricity will save 3%, it has a large space of energy saving.
Lack of professionals for operation management From the investigation on the tested projects, it is found that most of managers on heat pumps are electricians, they know little about HVAC.
The details are as follows: 1）The design shall consider the thermal equilibrium that large residential communities shall adopt soil-source heat pump in single way. 2）The valves of heat pump units and water pumps, before and after heat pump units shall be interaction design. 3）Air-conditioning system is one of important contents of operation management, it must be managed by professionals, and be indicated to be responsible by corresponding administrative departments to rule the market and ensure the quality.

As for the assessment criteria, 3-level Assessment System is carried out, namely, professional units draft and functional departments preliminary evaluate, professional assessment by functional departments and decision by Tender Leading Team [2]. 3-level decision-making mechanism is adopted for the decision of assessment, i.e, expert preliminary assessment, functional department 2-level verification and approval by tender leading team.
Management Flow Chart to Qualified Materials and Equipment Suppliers What is solicited are the engineering materials and equipment of great necessities, higher technical requirements and higher investment costs with its scope as follows: • Main architectural (including buildings, structural and civil works) materials •Main electro-mechanical materials and equipment (including water, power, heating, intelligence, fire-fighting) •Decoration materials •Other special materials and equipment (energy saving, environmental protection, etc) Material and equipment suppliers shall self declare according to the announcement on the open website with the qualification requirements as follows: •Capable of independently bearing the civil liabilities •A good commercial reputation and financial accounting system •Professional technical ability of fulfilling contracts •A good record of legally paid tax and social security funds •No record of breaking the laws and regulations during business activities
Formulation of evaluation criteria and confirmation procedures ref.to Fig.2 Organize professionals of relevant design units, departments of the Office and Quality Technical Supervision to verify the evaluation methods Organize the 3rd-party consulting organization to draft the material and equipment evaluation criteria Approval after verification The 3rd-party consulting units revise and improve the consolidated views Fig.2.
Totally, 154 items have been solicited for the 7 categories of professional materials and equipment in electrical, drainage, HVAC, intelligence, decoration, municipal engineering,etc. 733 suppliers are verified as qualified, 227 qualified suppliers among them are electrical category (strong electric professional) totally 29 items, including switches, switchboxes, emergency powers, lighting fixtures,etc.160 qualified suppliers among them are intelligence professional totally 57 items, including integrated cabling, video security, public broadcasting, building control system, electronic detector, entry & exit control, information release,etc. 99 qualified suppliers among them are drainage professional totally 99 items, including various valves, pipes, fire-fighting materials; 43 qualified suppliers among them are HVAC air-conditioning professional, totally 7 items, including fans, duct fittings, insulation materials; 79 qualified suppliers among them are municipal engineering, ,totally 13
items, including side flat stones, water-proof materials, well covers,etc. 125 qualified suppliers among them are decoration materials, totally 24 items, including ceramic tiles, glasses, aluminum alloy materials, paints, ceilings,etc.The solicitation for qualified suppliers is summarized as Table.3 Table.3.

But there is a serious shortage of professional fire police and lack of professional equipment for subway fire in our country.
Also the practice cannot smoke or water in order to guarantee normal operation of the next day.
The current metro design specification in China explicitly stipulates that the subway should have disaster prevention facilities, such as preventing fire, water, wind, snow, earthquake, lightning stoke and parking accident[4].
To Speed up the Construction of Professional Fire Fighting and Rescue Team.
Public security fire control departments should strengthen the guidance on construction of the professional team, and improve the ability of fire fighting and rescue.

It has the internal problems in water resources security system, such as precipitation, water use and water pollution; it has also the external problems in water resources security system, for instance, the use of public power, moral consciousness, institutional issues and so on.
For the problem of knowledge, it refers to finish all phases and all steps professional knowledge and technical skills required in water resources security pre-warning.
Water resources security pre-warning limitation The object of water resources security pre-warning study is caused by human activities, from the view of production; it can be divided into the gradient water resources security problem and the sudden water resources security problem.
For the gradient water resources security pre-warning, it normally adopts the integrated indicators to pre-warn; the sudden water resources security problem pre-warning has adopted professional model.
China Water Resources.

Firstly, most design professionals lack construction safety knowledge and unfamiliar with construction process[4].
In practice, design professionals usually lack expertise of construction safety so that they seldom consider the buildings constructability in the condition of safe environment.
The suggested solution is that both engineering and architectural curricula must include construction safety and construction practice experience in college, and require at least 10 hours safety course in continuing education for the design professionals.
Besides, although the owners are the core stakeholders in the project management organizations, they usually are not project management professionals and have no enough safety consciousness.
Sichuan　Water　Power.

Ogunde et al. [18] also opined that construction professionals and government should regularise and managed important components and major material used for building productions.
All the blocks selected for this study were produced with borehole water at the production sites.
The water absorption rate of river sand for SW, SE, and NC was carried out.
The result as shown in Figure 4 shows a water absorption rate of 1.91 % (SW), 1.87 % (SE), and 2.18% (NC) while the average water absorption rate for all the river sand is 1.99%.
Aggregates used for block production requires minimum water for easy moulding and early setting.

Sanshandao seafood treasure areas need higher quality water.
Because marine fishes and other swimming animals are sensitive to seawater quality, ones far from contaminated water farther will avoid contaminated water but others within polluted water would suffer fatal impact.
Larger accident leakage happens in the open water area, ports can not complete emergency work depending on their own strength alone because of the complex emergency work, should contact the relevant departments and professional emergency units to carry out emergency work.
Professional staffs use the corresponding plugging device according to the fire scene when the pressure vessel valve invalid.
Get ready to extinguish fire immediately and cool tanks and pipes with water.

Nominations will include a detailed description that allows professionals to introduce new scientific terminology, define geotechnical properties, identify the specific geographic/geological occurrence, and also the characteristic texture, colour and variability that contribute to aesthetic suitability for use.
GHSR designation will have significant value for all professional groups that work with stone.
Value of GHSR Designation GHSR designation will have significant value not only for all professional groups that work with stone but also for those who specify, quarry and market GHSR stone products.
Water Absorption b.
[3] Global Heritage Stone Circulars lodged at www.globalheritagestone.org which have issued and circulated to interested professionals as Global Heritage Stone Circular 1 (May 2009), Circular 2 (September 2010), Circular 3 (June 2011) and Circular 4 (March 2012)

Integrate Urban River Protection into Urban Planning and Construction The increasingly complicated and intercrossed water problems cover water quantity, quality and water availability.
However, the numerous political and economic resources input in this mode ensure the unimaginable effects of river management than river management by water professionals alone.
Urban river water quality and environment were considered and water pollution control was in the agenda in 1980s.Water quality management gradually became the main concern since 1999.
Water diversion projects and dredging also makes a steady return of dissolved oxygen in water bodies.
CLEAN–Soil, Air, Water, 41(1), 60-68

Involvement of large amount of design and complexity and variety of models in metal structure leads to a tight schedule for optimization design by professionals in this field and affects design schedule for coordination with other professionals, thus directly influencing design and its efficiency.
Assembly of project template library based on assembling units and parts and storage, as a whole template, of gate flap, gate slot, water seal structure and the like for steel gate, provide fast transferability for similar projects.
Steel Structure and Engineering Research Institute of North China University of Water Resources and Electric Power. 2012
Journal of North China Institute of Water Conservancy and Hydroelectric Power.2010(6):23-26
Journal of North China Institute of Water Conservancy and Hydroelectric Power.2010,31(5):1-5