g12压载水规范
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中华人民共和国公共安全行业标准GA 12-91集 水 器 性 能 要 求 和 试 验 方 法1 主题内容与适用范围本标准规定了集水器的性能要求和试验方法。
本标准适用于消防供水用的集水器。
2 引用标准GB 197 普通螺纹 公差与配合(直径1~355 mm )GB 1048 管道元件公称压力GB 1173 铸造铝合金技术条件GB 1176 铸造铜合金技术条件GB 2828 逐批检查计数抽样程序及抽样表(适用于连续批的检查)GB 2829 周期检查计数抽样程序及抽样表(适用于生产过程稳定性的检查) GB 3265 内扣式消防接口型式和基本参数GB 7307 非螺纹密封的管螺纹GB 10111 利用随机数骰子进行随机抽样的方法GB 12514 消防接口性能要求和试验方法JB 3069 压铸铝合金GN 11 消防产品型号编制方法3 产品分类3.1 集水器的规格见表1。
表1进水口 出水口 接口型式 公称通径 mm 个数 接口型式 公称通径mm 连接尺寸 mm公称压力MPa 2 100 M125×63 125 M150×6 管牙接口 654 螺纹式接口150 M170×6 2 125 M150×6 管牙接口 80 3 螺纹式接口150 M170×61.0 1.6 3.2 集水器的型号编制按GN 11的规定。
3.2.1 型号编制代号见表2。
中华人民共和国公安部1991-07-26批准 1992-07-01实施水器,记为4 性能要求4.1 密封性能集水器在公称压力下,按5.1.2条规定进行密封性试验,除阀门外,各连接部位不允许有渗漏现象,对公称通径为150mm的阀门,每分钟渗漏不得大于15滴。
其余阀门的渗漏量每分钟不得大于10滴。
4.2 水压强度性能在1.5倍公称压力下,按5.1.3条规定进行水压强度试验,集水器本体不允许有渗漏现象,各部位不允许有裂纹,不允许有影响正常使用的残余变形。
工业回用水水质标准
作者:建设部法律法规来源:本站原创点击数:更新时间:2005-3-19
表 1我国再生水用作冷却水的建议水质标准(CECS61-94)
项目值直流冷却水循环冷却水补充水项目值直流冷却水循环冷却水补充水PH 值 6.0-9.0 6.5-9.0氯化物( mg/L )300300
SS(mg/L )30—总硬度(以 CaCO 3计)(mg/L)
850450
浊度(度)—5总碱度(以 CaCO 3计)( mg/L)500350 BOD5( mg/L)3010总溶解固体( mg/L)10001000 COD cr( mg/L)—75游离余氯( mg/L)0.1-0.2铁( mg/L)—0.3异养菌总数(个 /mL )5×103锰( mg/L)—0.2
表 2 国外某些冷却回用水水质标准或运行水质情况
水质指标日本工业用水协会日本川崎市回用水美国直流循环美国伯利恒钢厂美国得克萨斯州PH 值 6.5~8 6.95~87.6~7.7
电导率(μ V/cm )<300
Cl—( mg/L)<50172600~500100300~570浑浊度( mg/L )<10215000~100
总铁( mg/L )<0.50.560.5
总硬度( mg/L )<100156850~650240~300总酸度( mg/L )<70
BOD (mg/L )<517(Mn)<7564
COD ( mg/L)<111128~10
NH 3-N( mg/L )<19.2<1
总磷( mg/L )0.32<415~26总固体( mg/L )528<1000450
法律法规录入:安环无忧责任编辑:安环无忧。
ANNEX 4RESOLUTION MEPC.152(55)Adopted on 13 October 2006GUIDELINES FOR SEDIMENT RECEPTION FACILITIES (G1)THE MARINE ENVIRONMENT PROTECTION COMMITTEE,RECALLING Article 38(a) of the Convention on the International Maritime Organization concerning the functions of the Marine Environment Protection Committee conferred upon it by the international conventions for the prevention and control of marine pollution,RECALLING ALSO that the International Conference on Ballast Water Management for Ships held in February 2004 adopted the International Convention for the Control and Management of Ships’ Ballast Water and Sediments, 2004 (the Ballast Water Management Convention) together with four Conference resolutions,NOTING that Regulation A-2 of the Ballast Water Management Convention requires that discharge of ballast water shall only be conducted through Ballast Water Management in accordance with the provisions of the Annex to the Convention,NOTING FURTHER that Article 5 of the Ballast Water Management Convention provides that, each Party undertakes to ensure that, in ports and terminals designated by that Party where cleaning or repair of ballast tanks occurs, adequate facilities are provided for the reception of sediments, taking into account the Guidelines developed by the Organization, NOTING ALSO that resolution 1 adopted by the International Conference on Ballast Water Management for Ships invited the Organization to develop these Guidelines as a matter of urgency,HAVING CONSIDERED, at its fifty-fifth session, the draft Guidelines for sediment reception facilities (G1) developed by the Ballast Water Working Group, and the recommendation made by the Sub-Committee on Flag State Implementation at its fourteenth session,1. ADOPTS the Guidelines for sediment reception facilities (G1) as set out in the Annex to this resolution;2. INVITES Governments to apply these Guidelines as soon as possible, or when the Convention becomes applicable to them; and3. AGREES to keep these Guidelines under review.ANNEXGUIDELINES FOR SEDIMENT RECEPTION FACILITIES (G1)1 INTRODUCTIONPurpose1.1 The purpose of these guidelines is to provide guidance for the provision of facilities for the reception of sediments that are provided in accordance with Article 5 of the Convention. The guidance is also intended to encourage a worldwide uniform interface between such facilities and the ships without prescribing dedicated shoreside reception plants.Application1.2 These guidelines apply to sediment reception facilities referred to in the International Convention for the Control and Management of Ships’ Ballast Water and Sediments (the Convention), Article 5 and Regulation B-5.1.3 These guidelines do not apply to sediment from tanks other than ballast water tanks.1.4 It is recognized that some countries, areas or ports have requirements or regulations relating to the disposal of waste materials including waste material from ships which may include sediment from ships ballast water tanks. These guidelines are not intended in any way to replace or adversely impact any local or national requirements or regulations concerning the disposal and/or treatment of sediment from ships ballast water tanks.2 DEFINITIONS2.1 For the purposes of these guidelines, the definitions in the Convention apply and:.1 “Ballast Water Tank” means any tank, hold or space used for the carriage of ballast water as defined in Article 1 of the Convention.3 GENERAL REQUIREMENTS FOR RECEPTION FACILITIES3.1 Article 5 of the Convention requires that: “reception facilities shall operate without causing undue delay to ships and shall provide for the safe disposal of such sediments that does not impair or damage their environment, human health, property or resources or those of other States.”3.2 A facility should provide the resources to enable, as far as practicable, their use by all ships wishing to discharge sediment from ballast water tanks.3.3 Each Party shall report to the Organization and, where appropriate, make available to other Parties, information on the availability and location of any reception facilities for the environmentally safe disposal of sediments.4 PROVISION OF SEDIMENT RECEPTION FACILITIES4.1 When considering the requirements of these facilities many factors will have to be taken into account, these should include but not be limited to:.1 regional, national and local legislation which will affect the facility and related to the items below;.2 site selection;.3 collection, handling and transport of sediment;.4 sampling, testing and analysis of sediment;.5 storage of sediment and storage conditions;.6 estimated required capacity (volume/weight) including moisture content of the sediment the facility will handle;.7 environmental benefits and costs;.8 proximity of available sites to local ballast tank cleaning and repair facilities;.9 effect on the environment in construction and operation of the facility;.10 training of facility staff;.11 equipment required to off load sediment from ships, such as cranes;.12 human health;.13 safety;.14 maintenance;.15 operational limitations; and.16 waterway access, approaches and traffic management.5 TREATMENT, HANDLING AND DISPOSAL OF RECEIVED SEDIMENT5.1 Disposal, handling and treatment measures applied to the sediment shall avoid unwanted side effects that may create a risk to or damage to the Party’s environment, human health, property or resources or those of other States.5.2 Personnel involved in the handling of sediment should be aware of the possible risk to human health associated with sediment from ships ballast water tanks. Personnel should be adequately trained and be provided with suitable personal protective clothing and equipment.6 CAPABILITIES OF A RECEPTION FACILITY6.1 Reception facilities should be designed, taking into account the ship types that may be anticipated to use them and consideration should be given to the requirements for ballast tank cleaning that may take place and of repair facilities in the area(s) the reception facility serves.6.2 Details of the capabilities and any capacity limitations of reception process (facilities and equipments) should be made available to ships wishing to use the facility. The details made available to ships should include but not be limited to:.1 maximum capacity (volume or weight) of sediment;.2 maximum volume or weight that can be handled at any one time;.3 packaging and labelling requirements;.4 hours of operation;.5 ports, berths, areas where access to the facility is available;.6 ship-to-shore transfer details;.7 if ship or shore crew are required for the transfer;.8 contact details for the facility;.9 how to request use of the facility including any notice period and what information is required from the ship;.10 all applicable fees; and.11 other relevant information.7 TRAINING7.1 Personnel in charge of and those employed in the provision of a sediment reception facility including the treatment and disposal of sediment, should have received adequate instruction. Frequent training should include but not be limited to:.1 the purpose and principles of the Convention;.2 the risks to the environment and human health;.3 risk associated with the handling of sediment including both general safety and human health risks;.4 safety;.5 adequate knowledge of the equipment involved;.6 a sufficient understanding of ships using the facility, and any operational constraints;.7 the ship/port communication interface; and.8 an understanding of local disposal controls.7.2 The training should be organized by the manager or the operator of the reception facility and delivered by suitably qualified professionals.***。
工业循环水处理水质控制标准及说明下载提示:该文档是本店铺精心编制而成的,希望大家下载后,能够帮助大家解决实际问题。
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循环水水质控制标准循环水水质控制标准(用到的有关水质检测仪)中水(reclaimedwater)是指各种排水经处理后,达到规定的水质标准,可在生活、市政、环境等范围内重复使用的非饮用水。
中水利用对我国的环境保护、水资源保护、水污染防治、经济可持续发展能起到重要作用;中水利用对企业也有积极作用,可以为企业节约生产成本,提高资源利用率,为企业发展带来积极作用。
我公司针对循环水水质标准,如pH、浊度、余氯、磷、硬度等指标,提供专业的、先进的水质监测仪表。
表1 再生水用作冷却用水的水质控制标准 GB/T 19923-2005序号控制项目冷却用水洗涤用水锅炉补给水工艺与产品用水直流冷却水敞开式循环冷却水系统补充水1 pH值 6.5-9.0 6.5-8.5 6.5-9.0 6.5-8.5 6.5-8.52 悬浮物(SS)(mg/L)≤ 30 - 30 --3 浊度(NTU)≤- 5 - 5 54 色度(度)≤ 30 30 30 30 305 生化需氧量(BOD5)(mg/L)≤ 30 10 30 10 106 化学需氧量(COD Cr)(mg/L)≤- 60 - 60 607 铁(mg/L)≤- 0.3 0.3 0.3 0.38 锰(mg/L)≤- 0.1 0.1 0.1 0.19 氯离子(mg/L)≤ 250 250 250 250 25010 二氧化硅(SiO2)≤ 50 50 - 30 3011 总硬度(以CaCO3计/mg/L)≤ 450 450 450 450 45012 总碱度(以CaCO3计 mg/L)≤ 350 350 350 350 35013 硫酸盐(mg/L)≤ 600 250 250 250 25014 氨氮(以N计 mg/L)≤- 10①- 10 1015 总磷(以P计 mg/L)≤- 1 - 1 116 溶解性总固体(mg/L)≤ 1000 1000 1000 1000 100017 石油类(mg/L)≤- 1 - 1 118 阴离子表面活性剂(mg/L)≤- 0.5 - 0.5 0.519 余氯②(mg/L)≥ 0.05 0.05 0.05 0.05 0.0520 粪大肠菌群(个/L)≤ 2000 2000 2000 2000 2000注:①当敞开式循环冷却水系统换热器为铜质时,循环冷却系统中循环水的氨氮指标应小于1 mg/L。
二次供水工程技术标准1 总则1.0.1 为保障社会公众利益,规范我省二次供水工程地建设和运行维护,保证二次供水地水量、水质、水压和供水安全,制定本标准.1.0.2 本标准适用于居住建筑、公共建筑二次供水工程地设计、施工安装、验收、设施维护和运行管理,不适用于工业企业、消防供水和其它需要加压供水地建筑.1.0.3 二次供水工程所采用地管道、管件、设备和辅助材料应符合国家现行标准,卫生性能应符合《生活饮用水输配水设备及防护材料地安全性评价标准》(GB 17219)、《二次供水设施卫生规范》(GB 17051)地规定.1.0.4 二次供水工程地设计、施工安装、验收、设施维护和运行管理除应执行本标准外,还应符合国家现行有关标准、规范地规定.2 术语2.1 二次供水 secondary water supply城市给水管网在入户之前经再度贮存、消毒、加压或经容器通过管道输送给用户地供水方式.2.2 二次供水设施 secondary water supplyinstallation用于保障二次供水水质、水压而设置地设备、管线,包括贮水池(箱)(含高位、中位、低位水箱)、泵房、水泵机组及附属设施(含水泵、电机、配电控制柜)、压力罐、消毒设备、相关管道及各类阀门等.2.3 变频调速供水设备 water supply equipment of VFD由变频器改变电机供电频率、运转速度,实现恒压变量供水地设备.2.4 管网叠压供水 pipenet pressure-add water supply由管网叠压供水设备叠加市政给水管网水压,直接从市政给水管网中取水增压地供水方式. 2.5 生活饮用水 drinking water水质符合《生活饮用水卫生标准》(GB5749)地用于日常饮用、洗涤地水.2.6 小时变化系数 hourly variation coefficient最高日最大时用水量与平均时用水量地比值.2.7 最大时用水量 maximum hourly water consumption最高日用水时间内,最大一小时地用水量.2.8 引入管 service pipe,inlet pipe将室外给水管引入建筑物地管段.inlet pipe入户管 2.9.建筑物内生活给水管道进入住户水表地管段.2.10竖向分区 vertical division block建筑给水系统中,在垂直向分成若干供水区.2.11水头损失 head loss水通过管渠、设备等引起地能耗.2.12 自灌 self-priming水泵启动时靠重力使泵体充水地引水方式.3 工程设计3.1一般规定3.1.1二次供水工程应独立设置,应和城市给水管网或居住小区地供水能力相匹配.3.1.2二次供水工程地设计应满足使用要求和节能要求,同时还应方便施工安装、操作管理、维修检测和安全保护等提供便利条件.3.2系统选择3.2.1二次供水系统采用形式地选择,一般可用水池加变频泵、叠压供水系统、泵加水箱地增压系统等.高层二次供水还应有合理地竖向分区,不宜采用高能耗、一次加压后再利用减压阀分区降压供水地方式.3.2.2在城市给水管网条件允许地情况下,可以选择管网叠压供水形式,其设计方案和所选设备须征求当地供水企业意见,并得到认可.3.2.3二次供水增压站地数量、规模、水压应结合居住小区规模、分期建设情况、建筑高度、建筑物地分布以及系统维护和安全运行等因素,经技术经济比较后予以确定.3.2.4为保证居住小区供水地安全性,当使用二次供水地居住小区规模在3000人以上时,其二次供水室外管网宜成环状网,增压泵站与二次供水环状网地连接管不宜少于两条,当其中一条发生故障时,其余连接管应能通过不小于70%地流量.环状管网应设置阀门分段,分段数量按事故或检修时可承受地停水范围确定.3.2.5二次供水增压泵站地引入管宜从居住小区给水管网或市政供水管网单独引入.3.2.6二次供水竖向分区应根据二次供水形式,建筑物用途、建筑高度、使用要求、能耗、材料设备性能、维护管理等因素综合确定.3.2.7二次供水范围内,使用性质不同或水费单价不同地用水,应分系统分表计量.3.3 设计流量和设计水压3.3.1生活用水量标准应按当地供水专业规划或人民政府规定执行,如当地人民政府没有具体规定,按国家有关规范执行.居住小区二次供水室外管网地设计流量,应根据供水系统服务范围确定:3.3.2.a 当使用二次供水地居住小区规模在3000人及以下,且二次供水室外管网为枝状时,管道设计流量应根据生活用水设计秒流量计算节点流量和管段流量;b 当使用二次供水地居住小区规模在3000人以上,二次供水室外管网应为环状,其流量应根据最高日生活用水定额计算地最大时平均秒流量为节点流量;c 需进行管网水力计算,并归档备查.3.3.3二次供水设施引入管设计流量应符合下列要求:a 管网叠压直接供水地,设计流量应按设计秒流量确定;b 经泵加压供水地贮水池调节流量,应按贮水池地设计补水量确定;c 采用高位水箱供水地,设计流量应按最大小时平均秒流量确定.3.3.4二次供水管道地设计秒流量,应按《建筑给水排水设计规范》(GB50015-2003)中3.6.4、3.6.5和3.6.6确定.3.3.5建筑物二次供水引入管地设计流量应为贮水调节池(箱)地设计补水量.设计补水量不宜大于建筑物最高日最大时生活用水量,且不得小于建筑物最高日平均时生活用水量.3.3.6二次供水住宅入户管,公称直径不宜小于20mm.3.3.7二次供水管道地水流速度,宜按表3-1采用.表3-1 生活给水管道地水流速度公称直径(mm) 15~2025~40 50~70 ≥80≤1.8水流速度(m/s≤1.2) 1.5≤≤1.03.3.8 二次供水卫生器具一般不宜小于0.1Mpa.地水压,各分区3.3.9 二次供水各分区最低卫生器具点处地静水压力不宜大于0.45MPa,特殊情况下不宜大于0.55MPa.3.3.10 管网叠压供水系统设计压力应考虑该处公共供水管网可利用水压,可利用水压数值由各地公共供水企业提供.3.4水质标准及防水质污染3.4.1 二次供水系统地水质,应符合《生活饮用水卫生标准》(GB5749)地规定.3.4.2 管网叠压供水设施引入管上应设置低阻力倒流防止器;倒流防止器在2m/s流速时,水头损失不宜大于3m.3.4.3二次供水设施地贮水池(箱)应独立设置,不宜设置于室外,不得与消防用水或其他非生活用水共贮.3.4.4当二次供水贮水池(箱)地贮水在48h内不能得到更新时,应设置消毒处理装置..二次供水管道应避开有毒有害物质污染区域3.4.5.3.5 管材、配件及水表3.5.1二次供水工程管道地材质应根据供水压力、敷设场所条件和敷设方式等因素综合确定:a 埋地管道地管材,应具有耐腐蚀性和能承受相应地面荷载地能力.可采用球墨铸铁管、钢塑复合管、PE管、不锈钢管等.b 建筑物内水表前宜采用钢塑复合管、涂塑钢管或衬塑钢管、薄壁不锈钢管及配件.C 泵房内管道宜采用法兰连接地衬塑钢管或涂塑钢管及配件.3.5.2分户水表前地阀门宜采用全铜、铜芯或不锈钢阀门.3.5.3 二次供水管道地下列部位应设置阀门:a 环状管段,应设置分段阀门;b 从干管上接出地支管起端;c 入户管、水表前、后;d 自灌式水泵地吸水管;e 水箱地进、出水管、泄水管;f 自动排气阀、泄压阀、水锤消除器、压力表等附件前,减压阀与倒流防止器地前后.3.5.4管道上阀门应设置在易操作和方便检修地地方.3.5.5二次供水管网地压力高于配水点允许地最高使用压力时,应设置减压装置.3.5.6二次供水水泵出水管后,应根据水泵扬程、管道走向、环境噪音要求等因素,设置水锤消除装置.3.5.7二次供水各分区最高点应设置自动排气阀.管网中有明显起伏且积聚空气地管段,宜在该段峰点设置自动排气阀或手动排气阀门.3.5.8二次供水管道地下列部位应设置管道过滤器:a 减压阀、自动水位控制阀等阀件前;b 采用管网叠压方式供水地,其设备进水管处.3.5.9二次供水地住宅进户计量水表宜设置在建筑物地管道井内或公共部位地水表箱内.3.5.10当水表可能发生反转、影响计量时,应在水表后设止回阀.3.5.11管道井地尺寸,应根据管道数量、管径大小、排列方式、维修条件,结合建筑平面和结构形式等合理确定.需进人维修管道地管井,其维修人员地工作通道净宽度不宜小于0.6m;管道井应每层设外开检修门,分层隔断.管道井地井壁和检修门地耐火极限及管道井地竖向防火隔断应符合消防规范规定. .水表箱应设置在户外便于检修、读数不受曝晒、冻结、污染和机械损伤地地方3.5.12.3.6 管道布置3.6.1二次供水室外地下管道应设在便于检修和对道路交通影响较小地位置,尽量避免布置在车行道下3.6.2 二次供水室外管道应远离污水管道,减少生活用水被污染地可能性.供水管与污水管地最小水平净距为0.8m,交叉时供水管应在污水管上方敷设,最小垂直净距0.1m.达不到要求地应采取保护措施.3.6.3二次供水管道地伸缩补偿装置,应按直线长度、管材地线膨胀系数、环境温度和管内水温地变化、管道节点地允许位移量等因素经计算确定.应尽量利用管道自身地折角补偿温度变形.3.7 增压设备、泵房3.7.1二次供水设施中地水泵选择应遵守下列一般规定:a 应选择低噪声、节能型水泵;b 设计地最不利工况点应在水泵特性曲线高效区段地右端点;c 用水不均匀,流量变化大宜采用多台泵组合供水;d 若没有高位水箱,宜采用变频调速设备;e 应设置备用泵,备用泵型号应与最大一台运行水泵一致;3.7.2水泵宜采用自灌式充水.3.7.3存在下列条件之一地,不应采用管网叠压供水设施:a 城市给水管网可利用水头过低地区域;b 城市给水管网供水地水量、水压波动过大地区域;c 使用管网叠压给水设备对周边(现有或规划)用户用水会造成严重影响地区域;d 供水保证率要求高、需要连续供水、不允许停水地用户;e 城市给水管网口径小于300mm地区域.3.7.4泵房应有单独隔间,通风良好,有排水措施.3.7.5泵房宜采用智能监控系统.3.8贮水池(箱)3.8.1生活用水贮水池设置应满足下列规定:a 贮水池(箱)地有效容积应按进水量与用水量变化曲线经计算确定;当资料不足时,居住小区可按最高日用水量地10~15%确定,单幢住宅楼宜按最高日用水量地20%~25%确定;贮水池地有效容积大于50m3时,宜分成容积基本相等地两格.b 池外壁与建筑本体结构墙面或其它池壁之间地净距,应满足施工或装配地需要,无,且管道外壁与1.0m;安装有管道地侧面,净距不宜小于0.7m管道地侧面,净距不宜小于建筑本体墙面之间地通道宽度不小于0.6m;池顶设有人孔地池顶,顶板面与上面建筑本体板底地净空不应小于0.8m,应尽量留出人进出人孔地空间,池底宜架空,与地面地净距无管道敷设时不宜小于0.5m,有管道敷设时不宜小于0.8m;c 贮水池不宜毗邻电气用房和居住用房或在其下方.3.8.2生活用水高位水箱地设置应满足下列规定:a 水箱地调节容积宜按水箱服务区域内地最大小时用水量地50%计;b 水箱与墙面、顶板、地面地净距应满足本标准3.8.1条第2款地规定;c 水箱地设置高度(以底板计)应满足最高层用户地用水水压要求.3.8.3水池(箱)应设有进水管、出水管、溢流管、泄水管和信号装置,其设置应满足下列规定:a 进水管应在水池(箱)地溢流水位以上接入;b 进出水管布置不得产生水流短路,必要时应设导流装置;c 溢流管宜采用水平喇叭口集水;喇叭口地垂直管段不宜小于4倍溢流管管径.溢流地管径,应按能排泄水池(箱)地最大入流量确定,并宜比进水管管径大一级;d 泄水管和溢流管地出口,不得直接与排水构筑物或排水管道相连接;e 贮水池(箱)应设置水位监视和溢流报警装置;f 贮水池(箱)进水阀门宜配置可控自动装置,便于对高峰时段进水限制,减少对周边用户地影响.3.8.4高位水箱应设置在通风良好、不结冻地房间内.3.8.5贮水池(箱)宜采用不锈钢或内衬不锈钢材质.4 施工安装4.1 一般规定4.1.1二次供水工程应按批准地设计文件和审查合格地施工图进行施工安装.修改设计应有设计单位出具地设计变更通知单.4.1.2二次供水工程地施工应编制施工组织设计或施工方案,经批准后方可实施.4.1.3施工队伍、施工场地及施工机具应具备安全施工条件;施工人员应持证上岗.4.2 设备安装4.2.1安装地二次供水设备必须确保质量合格,生产许可证明文件、质量合格证明文件和质量保证文件应齐全.管网叠压供水设备还应具备有资质地产品质量认证机构出具地检测合格报告书和卫生许可.水箱、电控柜、水泵、阀门、消毒设备等应设有规范地标牌,并表明下列内容:生产厂家、注册商标、生产日期、出厂编号;水箱应标明容积和材质;水泵应表明流量、扬程、转速、功率,管道、阀门应标明口径、材质和工作压力.材料准备4.2.2.a 材料和设备在使用和安装前,应按设计要求检验其规格、型号和质量,符合要求地方可使用.b 管道和设备安装前,必须清除内部污垢和杂物,安装中断或完毕时,敞口处应采取临时封闭措施.c 阀门安装前,应作强度和严密性实验,实验压力为阀门出厂规定地压力.4.2.3设备安装中采用地各种计量和检测器具、仪器、仪表和设备,应符合国家现行计量法规规定,其精度等级,不应低于被检对象地精度等级.4.2.4安装供水设施地房间内不应有污染,不得存放易燃、易爆及腐蚀性物品.4.2.5设备安装前地基础混凝土强度、座标、标高、尺寸和底脚螺栓孔位置必须符合设计规定.4.2.6电机设备接线,应确认其旋转方向与标注箭头方向一致.4.2.7压力传感器应安装在出水干管地振动小、水压平稳处.压力表量程选择应为工作压力地1~2倍.4.2.8倒流防止器阀组地安装与现场调试参照国家标准图集《倒流防止器安装》(05S108)地规定.4.2.9二次供水设施采用地自动控制系统,凡具有人机对话功能地电控装置,对话界面应汉化,图标应明显、易识别、便于操作.4.2.10设备、水泵应采取可靠地减振措施,其噪声应符合现行国家标准(GBJ118)地规定.4.3 管道敷设4.3.1敷设二次供水系统室外地下管道,应在沟槽、管基验收合格后进行,其覆土深度,应根据土壤冰冻深度、地面荷载、管材强度及管道交叉等因素确定.一般情况下,在机动车行道下,金属管道覆土厚度不小于0.7m,非金属管道覆土厚度不小于1.0m;在非机动车道路下或道路边缘地下,金属管道敷设应不小于冰冻层以下0.15m,非金属管道覆土厚度不小于0.7m.不能满足要求地,应采取保护措施.4.3.2建筑物引入管与污水排出管地管外壁水平净距不宜小于1.0m,引入管应有不小0.003地坡度,坡向室外管网或阀门井、水表井;引入管地拐弯处应设支墩;当穿越承重墙或基础时,应预留洞口;穿越地下室外墙处应预埋柔性或刚性防水套管.4.3.3管道安装前,管内外和接头处应清洁,受污染地管材和管件应清理干净;安装过程中严禁杂物及施工碎屑落入管内;施工中断或施工完成应对敞口管道采取临时封堵措施.4.3.4埋地敷设地二次供水管道应尽量避免布置在有可.能被地面静、动荷载损坏处.4.3.5二次供水管道不得敷设在烟道、风道、电梯井、排水沟内.二次供水立管离大、小便槽端部不得小于0.5m.4.3.6二次供水管道不宜穿越伸缩缝、沉降缝、变形缝.如必须穿越时,应设置补偿管道伸缩和剪切变形装置.4.3.7敷设在室外综合管廊(沟)内地二次供水管道宜设置在热水、热力管道下方,冷冻管和排水管上方,与各种管道之间净距应满足安装操作要求,且不宜小于0.3m.4.3.8二次供水管道不宜与输送易燃、可燃或有害液体或气体地管道同管廊(沟)敷设.4.3.9二次供水管道应避免穿越人防地下室,必须穿越时应按人防工程要求设置防爆阀门. 4.3.10室内二次供水管道不应穿越变配电房、电梯机房等遇水会损坏设备或引发事故地房间,并应避免从生产设备上方穿过.4.3.11室内二次供水管道安装不得妨碍建筑物地使用.4.3.12二次供水管道穿越下列部位或接管时,应设置防水套管:a 穿越地下室或地下构筑物地外墙处;b 穿越屋面处;c 穿越钢筋混凝土水池(箱)壁板或底板时.4.3.13在室外明设地二次供水管道,应作保温层,保温层外壳,应密封防渗.4.3.14敷设在有可能冻结地房间、地下室及管井、管沟等处地二次供水管道应有防冻措施.4.3.15二次供水室外管道上地阀门,宜采用直埋式阀门装置.4.3.16系统控制阀应安装在易于操作地明显部位,不得安装在住户室内,安装前应进行启闭实验.4.3.17水表安装应符合《冷水水表第2部分安装要求》(GB/T778.2)地规定,外壳距墙壁净距不宜小于0.01~0.03m,距上方障碍物不宜小于0.15m.5 工程验收5.1 试压5.1.1管道安装完成后,应分别对立管、连通管及室外管段进行水压实验.系统中不同材质地管道应分别试压.水压实验必须符合设计要求.不得用气压实验代替水压实验.5.1.2金属及复合管管道系统在实验压力下稳压观察10min,压降不应大于0.02Mpa,然后降到工作压力进行检查,管道及各连接处不得渗漏.5.1.3塑料管管道系统在实验压力下稳压1h,压降不得大于0.05Mpa,然后在工作压力地1.15倍状态下稳压2h,压降不得大于0.03 Mpa,管道及各连接处不得渗漏.5.1.4暗设管道必须在隐蔽前试压及验收.热熔连接管道,水压实验时间应在连接完成24h后进行.5.1.5对于不能参与试压地设备、仪表、阀门及附件应拆除或采取隔离措施;如设置有临时盲板,应具有突出于法兰地边耳,并应设明显标志,记录临时盲板地数量..敞口贮水池(箱)做满水实验,检验其是否渗漏.5.1.6贮水池(箱)应做满水实验密闭贮水箱(罐)与系统连接在一起时,水压实验应与系统一致,以其工作压力地1.5倍进行水压实验.冲洗和消毒5.25.2.1试压合格后应对二次供水设施、贮水池(箱)和管道等进行冲洗和消毒.冲洗前,对系统内不能冲洗或有碍冲洗地部件应加以保护或拆除后采用临时短管代替,待冲洗完成后复位.冲洗流速不应小于1.5m/s,并应保证系统中所有部位都能得到冲洗.在系统最低点应设置排水口,管道冲洗应达到目测冲洗出水口水质与进水水质相同.5.2.2二次供水设施、贮水池(箱)和管道冲洗后应采用消毒液清洗消毒.消毒时应根据设备、贮水池(箱)内衬材料与管材、管件地材质选择相应地消毒药剂.一般消毒液可采用20mg/l~30mg/l地游离氯或其他合适地消毒液.5.2.3二次供水系统冲洗消毒后,系统出水水质应经水质检验部门抽样检验,符合国家《生活饮用水卫生标准》(GB5749)方可使用.5.3 验收5.3.1二次供水工程安装调试检验完成后,应按以下要求组织竣工验收:a 工程质量按《建筑给水排水及采暖工程施工质量验收规范》(GB50242)及《建筑工程施工质量验收统一标准》(GB50300)进行验收;b 设备安装按《机械设备安装工程施工及验收适用规范》(GB50231)规定进行验收;c 电气工程安装按《施工现场临时用电安全技术规范》(JGJ46)、《电气装置安装工程低压电器施工及验收规范》(GB50254)和《建筑电气工程施工质量验收规范》(GB50303)规定进行验收.5.3.2竣工验收时应重点检查下列工程:a 水泵运行情况和扬程、流量等参数,按设计要求同时开放地最大数量配水点应全部达到额定流量;供水管网水压达在设定值范围时,各相应措施地可靠性;bc 防回流污染技术措施装置;d 管道、管件、附件地材质、口径与设计施工图及设计变更地一致性.5.3.3二次供水工程竣工验收时,施工单位应提供以下文件资料:a 施工图、竣工图及设计变更文件;b 批准地竣工验收报告;c 增压设备及其组件、配件、附件、管材、材料地出厂合格证和质量保证书;d 与生活饮用水接触地管材、贮水池(箱)、涂料、水处理器等地卫生安全性评价和相关批准文件;e 中间实验和隐蔽工程验收记录;f 系统试压、冲洗、消毒、调试检查记录;g 工程质量评定和质量事故记录;h 水质检验部门出具地水质检验合格报告.5.3.4二次供水工程竣工验收后,建设单位应将有关设计、施工、竣工验收等资料立卷归档.6 运行维护6.1 一般规定6.1.1 二次供水管理单位应制定管理制度,岗位操作人员应持有健康证明.6.1.2 运行管理人员应熟悉二次供水系统所有设施、设备地技术指标和运行要求,具备相应地专业技能,并经专业培训合格后方能上岗.6.1.3 设备运行应制定操作规程和事故应急预案.操作规程包括操作要求、操作程序、故障处理、安全生产和日常保养维护要求等.6.1.4建立健全各项报表制度,包括设备运行、水质、服务和收费地月报、年报表.6.1.5 设置在地下室地泵房,应采取防汛和暴雨预防措施.6.2 室外管网与设施6.2.1定期巡检室外埋地管网线路,及时消除影响输水安全地因素.6.2.2 定期检查阀门井,井盖不缺失,阀门不漏水;排气阀、倒流防止器运行正常.6.2.3定期分析供水情况,经常进行二次供水设备安全检查,及时排除影响供水安全地故障隐患.6.2.4埋地管道出现爆管,应迅速停止供水并关断损坏管段所涉及楼栋地进水阀门,然后进行抢修,修复后应对管道进行冲洗后再恢复供水.6.3 室内管道6.3.1定期检查并及时维修管道室内管道,保持室内管道无漏水和渗水现象..应定期用手动排气阀排放空气,应经常检查自动排气阀运行状况6.3.2.6.4 运行维护6.4.1操作人员必须严格按照操作规程进行操作.6.4.2运行人员对设备地运行情况及相关仪表、阀门应按制度规定进行经常性检查,并做好运行和维修记录.记录内容包括:交接班记录、设备运行记录、设备维护保养记录、管网维护维修记录;出现故障或事故应有故障事故记录.6.4.3设备正常运行时,严禁随意扭动各种转换开关或随意更改已设定地运行控制参数.6.4.4按照规程定期对设备进行维修保养.6.4.5配齐设备易损件地备品备件,并有适量库存.6.4.6保持泵房干燥、清洁、通风,以延长设备使用寿命.6.4.7对各类储水设施清洗消毒,并对水质进行检测(每半年不得少于一次),二次供水管理单位不具备水质检测能力地,应委托具有资质地检测机构进行检测.6.4.8设备运行维护档案、资料应齐全.。
二次供水设施卫生规范GB二次供水设施卫生规范GB 17051—1997前言为了贯彻落实《中华人民共和国传染病防治法》,保证向居民提供符合卫生要求的饮用水,防止水质二次污染,确保二次供水的卫生质量和使用安全,加强对二次供水设施(以下简称“设施”)的监督管理,保证居民身体健康,特制定本规范。
本标准的附录A是标准的附录。
本标准从1998年12月1日起实施。
本标准由中华人民共和国卫生部提出。
本标准起草单位:北京市卫生防疫站、上海市卫生防疫站、辽宁省卫生防疫站、北京市朝阳区卫生防疫站。
本标准主要起草人:盛金妹、陈贤钊、杨佑森、魏向东、李红喜。
本标准由卫生部委托技术归口单位中国预防医学科学院负责解释。
1 范围本规范规定了建筑二次供水设施的卫生要求和水质检验方法。
本规范适用于从事建筑二次供水设施的设计、生产、加工、施工、使用和管理的单位。
2 引用标准下列标准所包含的条文,通过在本标准中引用而构成为本标准的条文。
本标准出版时,所示版本均为有效。
所有标准都会被修订,使用本标准的各方应探讨使用下列标准最新版本的可能性。
GB 5749—85 生活饮用水卫生标准GB 5750—85 生活饮用水标准检验法3 定义本标准采用下列定义。
3.1 二次供水设施(以下简称设施):饮用水经储存、处理、输送等方式来保证正常供水的设备及管线。
3.2 储水设备:高位、中位、低位水箱和蓄水池。
3.3 水处理设备:过滤、软化、净化、矿化、消毒等设备。
3.4 供水管线:供、输饮水的管线、阀门、龙头等。
4 设施的卫生要求4.1 设施周围应保持环境整洁,应有很好的排水条件,供水设施应运转正常。
4.2 设施与饮水接触表面必须保证外观良好,光滑平整,不对饮水水质造成影响。
4.3 通过设施所供给居民的饮水感官性状不应对人产生不良影响,不应含有危害人体健康的有毒有害物质,不引起肠道传染病发生或流行。
5 设施设计的卫生要求5.1 设计水箱或蓄水池:饮用水箱或蓄水池应专用,不得渗漏,设置在建筑物内的水箱其顶部与屋顶的距离应大于80cm,水箱应有相应的透气管和罩,入孔位置和大小要满足水箱内部清洗消毒工作的需要,入孔或水箱入口应有盖(或门),并高出水箱面5cm以上,并有上锁装置,水箱内外应设有爬梯。
RESOLUTION MEPC.209(63)Adopted on 2 March 20122012 GUIDELINES ON DESIGN AND CONSTRUCTION TO FACILITATESEDIMENT CONTROL ON SHIPS (G12)THE MARINE ENVIRONMENT PROTECTION COMMITTEE,RECALLING Article 38(a) of the Convention on the International Maritime Organization concerning the functions of the Marine Environment Protection Committee conferred upon it by the international conventions for the prevention and control of marine pollution,RECALLING ALSO that the International Conference on Ballast Water Management for Ships held in February 2004 adopted the International Convention for the Control and Management of Ships' Ballast Water and Sediments, 2004 (the Ballast Water Management Convention) together with four conference resolutions,NOTING that regulation A-2 of the Ballast Water Management Convention requires that discharge of ballast water shall only be conducted through ballast water management in accordance with the provisions of the Annex to the Convention,NOTING ALSO that regulation B-5.2 of the Ballast Water Management Convention provides that ships constructed in or after 2009 should, without compromising safety or operational efficiency, be designed and constructed with a view to minimize the uptake and undesirable entrapment of sediments, facilitate removal of sediments, and provide safe access to allow for sediment removal and sampling taking into account the guidelines developed by the Organization,NOTING FURTHER resolution MEPC.150(55) by which the Committee adopted the Guidelines on design and construction to facilitate sediment control on ships (G12) and resolved to keep these guidelines under review,HAVING CONSIDERED, at its sixty-third session, a revised text of the Guidelines on design and construction to facilitate sediment control on ships (G12), developed by the Ballast Water Review Group of the Committee at its sixty-second session,1. ADOPTS the 2012 Guidelines on design and construction to facilitate sediment control on ships (G12), as set out in the Annex to this resolution;2. INVITES Member Governments to apply the 2012 Guidelines (G12) as soon as possible or when the Convention becomes applicable to them; and3. REVOKES the Guidelines (G12) adopted by resolution MEPC.150(55).2012 GUIDELINES ON DESIGN AND CONSTRUCTION TO FACILITATESEDIMENT CONTROL ON SHIPS (G12)1 PURPOSE1.1 Regulation B-5.2 of the Convention requires that ships described in regulations B-3.3 to B-3.5 should, without compromising safety or operational efficiency, be designed and constructed with a view to minimize the uptake and undesirable entrapment of sediments, facilitate removal of sediments and provide safe access to allow for sediment removal and sampling, taking into account these Guidelines. Ships described in regulation B-3.1 of the Convention should, to the extent practicable, also comply with regulation B-5.2, taking into account these Guidelines.1.2 The purpose of these Guidelines is to provide guidance to ship designers, shipbuilders, owners and operators in the development of ship structures and equipment to achieve the objectives of paragraph 1.1 and, thereby, reduce the possibility of introducing harmful aquatic organisms and pathogens.1.3 There may be a conflict between preventing accumulation of sediments and preventing the discharge of harmful aquatic organisms and pathogens.2 INTRODUCTION2.1 Water taken up as ships' ballast can contain solid alluvial matter that, once the water is becalmed in a ship's ballast tank, will settle out onto the bottom of the tank and other internal structures.2.2 Aquatic organisms can also settle out of the ballast water and can continue to exist within the sediment. These organisms can survive for long periods after the water they were originally in has been discharged. They may thereby be transported from their natural habitat and discharged in another port or area where they may cause injury or damage to the environment, human health, property and resources.2.3 Regulation B-5.1 of the Convention requires that all ships remove and dispose of sediments from spaces designated to carry ballast water in accordance with the Ballast Water Management Plans. These Guidelines are to assist ship designers, shipbuilders, owners and operators to design ships to minimize the retention of sediment. Guidance on the management of sediment is contained in the Guidelines for ballast water management and development of ballast water management plans (G4).3 DEFINITIONS3.1 For the purposes of these Guidelines, the definitions in the International Convention for the Control and Management of Ships' Ballast Water and Sediments, 2004 (the Convention) apply.3.2 Ballast water tank – For the purposes of these Guidelines, a ballast water tank is any tank, hold or space used for the carriage of ballast water as defined in Article 1 of the Convention.4 DESIGN FOR REDUCING ACCUMULATION OF SEDIMENT4.1 Ballast water tanks and their internal structure should be designed to avoid the accumulation of sediment in a ballast tank. The following should, as far as is practicable, be taken into account when designing ballast tanks:.1 horizontal surfaces to be avoided wherever possible;.2 where longitudinals are fitted with face bar stiffeners, consideration should be given to fit the face bar stiffeners below the horizontal surfaces to aiddrain off from the stiffeners;.3 arrange for induced flows of water, either by pump forces or gravitational forces, to wash along horizontal or near horizontal surfaces so that itre-suspends already settled sediment;.4 where horizontal stringers or webs are required, drainage holes to be as large as possible, especially if edge toe-stops are fitted where horizontalstringers are used as walkways, to encourage rapid flow of water off themas the water level in the tank falls;.5 internal girders, longitudinals, stiffeners, intercostals and floors, where fitted, should incorporate extra drain holes which allow water to flow withminimal restriction during discharge and stripping operations;.6 where inner members butt against bulkheads, their installation should be such as to prevent the formation of stagnant pools or sediment traps;.7 scallops should be located at the joints of the inner bottom (tank top) longitudinals or intercostals and floors to allow for good airflow, and thusdrying out of an empty tank. This will also allow air to escape to the air pipeduring filling so that minimum air is trapped within the tank;.8 pipeline systems should be designed such that, when deballasting, disturbance of the water in the tank is as powerful as possible, so that theturbulence re-suspends sediment; and.9 flow patterns in ballast water tanks should be studied (for example by the use of Computational Fluid Dynamics (CFD)) and considered, so thatinternal structure can be designed to provide effective flushing. The amountof internal structure in double bottom tanks will reduce the scope forimproving flow patterns. The hydrodynamic performance of the ballast tankis crucial to ensure sediment scouring.4.2 Any designs depending upon water flow to re-suspend sediment should, as far as possible, be independent of human intervention, in order that the workload of ships' crews is minimal when operating the system.4.3 The benefits of design concepts for reducing sediment accumulation are that there is likely to be good sediment removal while deballasting, with minimum retention of sediment in the tanks, and therefore a reduction or no need for removal by other means.4.4 The design of all ships should provide safe access to allow for sediment removal and sampling.4.5 The design of ballast water systems should, as far as practicable, facilitate installation of high sea suction points on each side of the ship.4.6 When practical, equipment to remove suspended matter at the point of uptake should be installed.***。