热水锅炉安全技术监察规程__劳锅字[1997]74号

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锅炉设计方案

锅炉设计方案

锅炉选型方案一、选型依据1.生活小区用热负荷:采暖面积:8000m2;2.参照标准《锅炉房设计规范》GB50041-92《供暖通风设计手册》《热水锅炉安全技术监察规程》劳锅字[1997]74号二、负荷计算①、采暖负荷计算:采暖热指标取:65w/㎡则采暖总热负荷为:8000㎡*65 w/㎡=520000 W三、选型分析总采暖面积为8000m2。

采暖热指标取65 w/㎡,则采暖总热负荷为Q= 8000㎡*65 w/㎡=520000 W。

根据以上数据,本着“配置合理、满足需要、安全节约、操作方便”的原则,提出如下方案:推荐系统选用1台GT430—14型燃气热水锅炉,可满足用户需求。

此方案有利于用户最大负荷运行,且运行节能,操作简单方便。

采暖用负荷较大时,锅炉可满负荷运转。

四.确定炉型选用1台GT430—14型燃气热水锅炉。

五、系统说明本方案配置1台GT430—14型燃气热水锅炉,只做采暖供热需要。

循环水泵的选型1循环水量的确定对于热水供热系统,循环水流量由下式计算:G=[Q/c(tg-th)]×3600=0.86Q/(tg-th)式中:G -计算水流量,kg/hQ -热用户设计热负荷,Wc -水的比热,c=4187J/ kgo℃tg﹑th-设计供回水温度,℃一般情况下,按每平方米建筑面积2~2.5 kg/h估算。

供暖设计出水温度95度,回水温度70度。

总的采暖热负荷为520KW,带入公式得循环水量为:G=17888KG/H。

裕量取10%,所以循环水量为:G=17888*1.1=19676.8 KG/H。

实际取水量按19700KG/H 来取值。

2 水泵扬程的确定按照国家普通建筑层高为3米计算,此建筑物最高的是4层,裕量取25%,所以水泵扬程H=3*4*1.25=15m。

3 水泵型号确定。

主要现行锅炉法规标准目录

主要现行锅炉法规标准目录
19
JB/T 1615-1991锅炉油漆和包装技术条件
20
JB/T 9619-1999工业锅炉胀接技术条件
21
JB/T 1622-1993锅炉胀接管孔尺寸和管端伸出长度
22
JB 6693-1993水管工业锅炉主要受压元件制造工艺
23
JB/T 7985-1995常压热水锅炉通用技术条件
24
GB 50273-1998工业锅炉安装工程施工及验收规范
42
GB/T 699-1999优质碳素结构钢技术条件
43
JB/T 9626-1999锅炉锻件技术条件
44
GB 3323-87钢熔化焊对接接头射线照相和质量分析
45
JB 4730-94压力容器无损检测
46
JB 1152-81锅炉和钢制压力容器对接焊缝超声波探伤
47
DL/T 995电力建设施工及验收规范管道焊接接头超声波检验篇
36
DL 647-1998电力工业锅炉压力容器检验规程GB 713-1997锅炉用钢板
37
YBT 41-1987锅炉用碳素钢及低合金钢厚钢板
38
GB 3087-1999低中压锅炉用无缝钢管
39
YBT 33-1986低中压锅炉用冷拔无缝钢管
40
GB 5310-1995高压锅炉用无缝钢管
41
YBT 32-1986高压锅炉用冷拔无缝钢管
7
GB/T 16508-1996锅壳锅炉受压元件强度计算
8
JB/T 3375-1991锅炉原材料入厂检验
9
JB/T 1609-1993锅炉锅筒制造技术条件
10
JB/T 1610-1993锅炉集箱制造技术条件
11

王丽文库之热水锅炉安全技术监察规程

王丽文库之热水锅炉安全技术监察规程

王丽文库之热水锅炉安全技术监察规程第一章总则第1条为了确保锅炉安全运行,保护人身安全,促进国家经济的进展,根据《锅炉压力容器安全监察暂行条例》的有关规定,制定本规程。

第2条本规程适用于承压的以水为介质的固定式蒸汽锅炉及锅炉范围内管道的设计、制造、安装、使用、检验、修理与改造。

汽水两用锅炉除应符合本规程的规定外,还应符合《热水锅炉安全技术监察规程》的有关规定。

本规程不适用于水容量小于30L的固定式承压蒸汽锅炉与原子能锅炉。

第3条各有关单位及其主管部分务必执行本规程的规定。

县级以上各级人民政府劳动行政部分负责锅炉安全监察工作。

各级劳动行政部分锅炉压力容器安全监察机构(劳动行政部分锅炉压力容器安全监察机构下列简称安全监察机构)负责监视本规程的执行。

第4条本规程的规定是锅炉安全治理与安全技术方面的基本要求。

有关技术标准的要求假如与本规程的规定不符时,应以本规程为准。

第5条进口固定式蒸汽锅炉或者国内生产企业(含外商投资企业)引进国外技术按照国外标准生产且在国内使用的固定式蒸汽锅炉,也应符合本规程的基本要求。

特殊情况如与本规程基本要求不符合时,应事先征得劳动部安全监察机构同意。

第6条有关单位若使用新结构、新工艺、新材料等新技术,如与本规程不符时,须将所做试验的条件与数据或者者有关的技术资料与根据送省级安全监察机构审核同意后,报劳动部安全监察机构审批。

第二章一般要求第6条锅炉的设计务必符合安全、可靠的要求。

钢制锅炉受压元件的强度应按GB9222《水管锅炉受压元件强度计算》或者JB3622《锅壳式锅炉受压元件强度计算》进行计算与校核。

第7条锅炉受压元件的制造应符合本规程的要求并符合锅炉专业技术标准的有关规定。

锅炉安全附件的质量应符合有关技术标准。

安全阀、温度计、压力表、排污阀(或者放水阀)、排气阀不全的锅炉不准出厂。

第8条锅炉出厂时,务必附有下列与安全有关的技术资料:(1)锅炉图样(总图、安装图与要紧受压部件图);(2)受压元件的强度计算书;(3)安全阀数目与流道直径(喉径)的计算书(对额定出口热水温度高于或者即是100℃的锅炉);(4)水流程图及水动力计算书(自然循环的锅壳式锅炉除外);(5)锅炉质量证实书;(6)锅炉安装说明书与使用说明书;(7)受压元件设计更换通知书。

热水锅炉安全技术监察规程内容介绍

热水锅炉安全技术监察规程内容介绍

热水锅炉安全技术监察规程内容介绍一、任务分析为了确保锅炉安全运行,促进国民经济的发展,保护人身安全,根据《锅炉压力容器安全监察暂行条例》的规定,1997年2月原劳动人事部颁布了《热水锅炉安全技术监察规程》(以下简称《规程》)。

该《规程》对在以水为介质的额定热功率≥0.1MW或额定出水压力≥0.1KPa的固定式热水锅炉及符合《蒸汽锅炉安全技术监察规程》的汽水两用锅炉的设计、制造、安装、使用、检验、修理和改造工作中的行为作出了规定。

为确保安全生产,保护自身和他人权益,本任务主要是介绍该《规程》中与司炉人员有关的内容。

二、相关专业知识(一)对锅炉使用单位的要求1.新制造的锅炉必须有铭牌,并应装在明显的位置。

铭牌上至少应载明下列项目(1)锅炉型号。

(2)制造厂锅炉产品编号。

(3)额定热功率(MW)。

(4)额定出水压力(MPa)。

(5)额定出口/进口水温(℃)。

(6)制造厂名。

(7)锅炉制造许可证级别和编号。

(8)制造年月。

对散装出厂的锅炉,还应在锅筒、集箱等主要受压部件的封头上打上钢印,注明该部件的产品编号。

2.使用锅炉的单位应按照原劳动人事部颁发的《锅炉使用登记办法》逐台办理登记手续。

3.使用锅炉的单位应按照原劳动人事部颁发的《锅炉房安全管理规则》搞好锅炉及热水系统的使用管理工作。

4.司炉工人须按原劳动人事部颁发的《锅炉司炉工人安全技术考核管理办法》考试,取得司炉操作证后才能操作锅炉,且只能操作不高于考试合格类别的锅炉。

5.使用锅炉的单位应制订突然停电时的操作方法和程序,并使司炉掌握。

6.使用锅炉的单位必须做好水质管理工作,采取有效的水处理措施,使锅炉运行时的锅水、补给水符合GB1576—1996《低压锅炉水质标准》有关规定。

7.使用锅炉的单位应认真执行排污制度。

8.为了操作、检修的方便和安全,锅炉应装设扶梯,对于操作部位较高,操作人员立足地点距离地面(或运转层)高度超过3m的锅炉,应装设平台和防护栏杆等设施。

水锅炉安全技术监察规程

水锅炉安全技术监察规程

水锅炉安全技术监察规程第一章总则第一条为了加强水锅炉安全监察,防止和减少事故,保障人民群众生命和财产安全,促进经济发展,根据《特种设备安全监察条例》的有关规定,制定本规程。

第二条本规程适用于符合《特种设备安全监察条例》规定的水锅炉及其相关设备和系统的安全监察。

第三条水锅炉安全监察应遵循预防为主、安全第一、综合治理、法治保障的原则。

第二章设备监察第四条水锅炉设备应符合国家规定的安全技术要求,并经国家质量监督检验检疫总局认可的检验机构检验合格。

第五条水锅炉设备的安装、改造、维修和报废应符合国家有关规定,并由取得相应资格的单位或者个人进行。

第六条水锅炉设备的使用单位应建立健全设备管理制度,定期进行维护、检查和保养,确保设备安全运行。

第七条水锅炉设备的安全附件和仪表应定期进行校验和检定,保证其准确可靠。

第三章操作与维护第八条水锅炉操作人员应具备相应的安全知识和操作技能,经培训合格后方可上岗。

第九条水锅炉操作人员应严格遵守操作规程和安全生产规章制度,做到安全操作。

第十条水锅炉运行中,操作人员应定期进行巡回检查,发现问题及时处理。

第十一条水锅炉停炉后,操作人员应按照规定的程序进行冷却,防止锅炉爆炸。

第四章安全监察与管理第十二条国家质量监督检验检疫总局负责全国水锅炉安全监察工作。

第十三条地方各级质量技术监督部门负责本行政区域内水锅炉安全监察工作。

第十四条水锅炉使用单位应建立健全安全生产责任制,明确各级领导和工作人员的安全职责。

第十五条水锅炉使用单位应制定应急预案,组织应急演练,提高应对突发事件的能力。

第十六条水锅炉使用单位应定期进行安全检查,发现问题及时整改。

第五章法律责任第十七条违反本规程规定的,由质量技术监督部门依法予以查处。

第十八条造成水锅炉事故的,依法承担赔偿责任;构成犯罪的,依法追究刑事责任。

第六章附则第十九条本规程由国家质量监督检验检疫总局负责解释。

第二十条本规程自发布之日起施行。

以上内容仅供参考,具体规程请以国家质量监督检验检疫总局发布的《水锅炉安全技术监察规程》为准。

热水锅炉安全技术监察规程(参考Word)

热水锅炉安全技术监察规程(参考Word)

第一章总则一、《热水锅炉安全技术监察规程》适用范围包括电加热热水锅炉和锅炉范围内管道。

二、进口固定热水锅炉或国内生产企业(含外商投资企业)引进国外技术,按照国外标准生产且在国内使用的固定式热水锅炉,也应符合本规程的基本要求。

特殊情况如与本规程基本要求不符时,应事先征得劳动部锅炉压力容器安全监察机构同意。

第二章一般要求锅炉安装质量的分段验收和水压试验,由锅炉安装单位和使用单位共同进行。

总体验收时,除锅炉安装单位和使用单位外,一般还应有劳动部门锅炉压力容器安全监察机构派员参加。

第三章材料用于锅炉的主要材料如锅炉钢板、锅炉钢管和焊接材料等,锅炉制造厂应按有关规定进行入厂验收,合格后才能使用。

用于额定热功能率小于或等于4.2MW且额定出水温度小于120℃锅炉的主要材料如原始质量证明齐全,且材料标记清晰、齐全时,可免于复验。

对于质量稳定并取得劳动部锅炉压力容器安全监察机构产品安全质量认可的材料,可免于复验。

否则,不能免于复验。

第四章钢制锅炉的结构一、受压元件上开胀接管孔应符合《蒸汽锅炉安全技术监察规程》第51条的规定。

二、锅炉受热面和子以及锅炉范围内管道可采用夫直段弯头,采用无直段弯头的布置及技术要求应符合《蒸汽锅炉安全技术监察规程》第5条的规定。

三、对于卧式内燃锅壳热水锅炉,其炉胆与管板、锅壳采用T形对连接的有关要求应符合《蒸汽锅炉安全技术监察规程》第48条、77条、84条的规定。

四、额定出水压力小于或等于1.6MP a的锅炉,其受压元件的人孔盖、头孔盖、手孔盖可采用法兰连接结构。

第五章受压元件的焊接一、经过部分射线探伤检查找焊缝,在探伤部位任意一端发现缺陷有延伸的可能时,应在缺陷的延方向做补充射线探伤检查。

在抽或在缺陷的延长方向补充检查中有不合格缺陷时,该条焊缝应做抽查数量双倍数目的补充探伤检查。

补充检查后,仍有不合格时,该条焊缝应全部进行探伤。

受压管道和管子对接接头做探伤抽查时,如发现有不合格的缺陷,应做抽样数量的双倍数目的补充探伤检查。

《热水锅炉安全技术监察规程》英文版

Ministry of Labor of People’s Republic of ChinaHot-water Boiler Safety Technology SupervisionRegulation(1997 Revised Edition)China Boiler and Pressure Vessel Safety Magazine Pressof Ministry of LaborDocument of Ministry of LaborLB [1997] No. 74Notification on Printing and Distribution of the Related Chapters of Modified Hot-water Boiler Safety TechnologySupervision RegulationLabor (labor and personnel) Bureau (office) of each province, autonomous region and municipality directly under the Central Government:The Steam Boiler Safety Technology Supervision Regulation (Ministry of Labor Issue [1996] No. 276, abbreviated as Steam Regulation) has been implemented since Jan. 1, 1997. In order to harmonize the Hot-water Boiler Safety Technology Supervision Regulation (Ministry of Labor Boiler Issue [1991] No.8, abbreviated as Water Regulation) with the Steam Regulation on safety technology requirements, we made corresponding modification to related chapters in Water Regulation. Now, we print and distribute the modified related chapters of Water Regulation to you. Please implement them combining with the other chapters. If there is any problem in implementation, please report in time to the Supervision Bureau of Industrial Safety and Sanitation and Boiler and Pressure Vessel in our ministry.Ministry of LaborFeb. 14, 1997Document of Ministry of LaborMinistry of Labor Boiler Issue [1991] No. 8Notification about issue of Hot-water Boiler Safety Technology Supervision RegulationLabor (labor and personnel) Bureaus (offices) of each province, autonomous region and municipality directly under the Central Government, related labor (safety) departments of related ministries, Committees, directly institutions of the Council State, General Logistics Ministry of Liberator Army:Hot-water Boiler Safety Technology Supervision Regulation Issued by former Ministry of Labor and Personnel in June 3, 1983, has played an important role in guarantee of boiler safe operation and decrease of accident rate. However, in recent years, there have been great modification of related regulations and technology standards, and the original regulation doesn’t suit for present requirements. In order to adapt to new situations, accelerate continuous development of boiler safety technology in our country, and further improve boiler management level, according to broad suggestions, we made a complete modification on original regulation. Now, we distribute the new Hot-water Boiler Safety Technology Supervision Regulation to you. Please implement it from Jan.1, 1992. At the same time, the former regulation is abolished.For the problems, such as “tube sheet crackles or leakage and boiler shell bulges” usually existing in present shell horizontal external burning boiler, and etc, Article 26 in this new regulation has been brought forward. As for these boilers with problems, boiler manufacturers should take measures and resolve them as soon as possible in the coming two years. Technology measures should be approved by province level boiler and pressure vessel safety supervision institutions, and be verified whether they are effective or not through actual operations in a certain period. If there are still problems two years later, these boilers are not allowed to produce any more.Local labor department and related corporations and their supervision departments should organize related personnel to seriously study and implement this new regulation. If there is any problem in implementation, please report to Supervision Bureau of Boiler and Pressure Vessel of our ministry in time.Ministry of LaborMay 20, 1991ContentsChapter 1 General Principles (4)Chapter 2 General Requirements (5)Chapter 3 Materials (8)Chapter 4 Structure of the Steel boiler (13)Chapter 5 Welding of Pressurized Parts (21)Chapter 6 Expansion Jointing (32)Chapter 7 Cast Iron Boiler (34)Chapter 8 Principal Accessories and Apparatus (36)Chapter 9 Hot-water System and Accessories (43)Chapter 10 Boiler House (45)Chapter 11 Usage Management (48)Chapter 12 Inspection (50)Hot-water Boiler Safety Technology SupervisionRegulationChapter 1 General Principles1. Hot-water Boiler Safety Technology Supervision Regulation adapts to the electric heating hot-water boiler and tubes of the boiler.2. Imported stationary hot-water boilers and stationary hot-water boilers manufactured according to foreign standards by corporations in home (including foreigner investment corporations) through introducing foreign technology also should accord with the basic requirements of this regulation. Specially, if they don’t accord with the basic requirements of this regulation, they should ask for approval of the boiler and pressure vessel safety supervision institutions of the Ministry of Labor in advance.Clause 1 In order to guarantee safety and economical operation of boilers, accelerate development of national economy, and protect life safety, promote the development of the state economy and protect life of people and assets, this regulation is formulated in accordance with related regulations of Boiler and Pressure Vessel Safety Supervision Temporary Ordinance.Clause 2 This regulation is applicable to stationary hot-water boilers using water as medium (abbreviated as Boilers), which accord with the following requirements at the same time:(1) Their rated thermal power exceeds or equals to 0.1MW.(2) Their rated delivery pressure exceeds or equals to 0.1MP (meter’s pressure value, following is same).For stationary pressure-bearing boilers out of the range above, the boiler and pressure vessel safety supervision institutions of province level labor departments can formulate safety supervision regulations according to this regulation and local concrete situations.Steam-water boiler should accord with Steam Boiler Safety Technology Supervision Regulation and this Regulation at the same time.This regulation is not applicable to electric heating boilers.Clause 3 Design, manufacture, installation, use, inspection, repair and reconstruction of boilers should accord with Boiler and Pressure Vessel Safety Supervision Temporary Ordinance and this Regulation.Related units and their departments in charge should strictly implement this regulation. Boiler and pressure vessel safety supervision institutions of each level labor department should be responsible for supervising the implementation of this regulation.Clause 4 Stipulations in this regulation are the basic requirements on safety technology of boilers. If requirements of related technology standards are lower than or conflict with this regulation, then should treat this regulation as standards.Clause 5 If requirements don’t accord with this regulation because related units adopt new technology (such as new structures, new techniques, etc.), necessary scientific experiments should be carried out. And they must be examined and approved by province level supervision departments and the boiler and pressure vessel safety supervision institutions of province level labor departments, and be tried out in appointed units in a certain period, at the same time be reported to State Bureau of Boiler and Pressure Vessel Safety Supervision in Ministry of Labor to put on records.Chapter 2 General RequirementsSubsection examination and acceptance and hydraulic tests of boilers installation quality should be done together by installation units and users. During whole examination and acceptance, besides installation units and users, generally boiler and pressure vessel safety supervision institutions of labor departments should dispatch personnel to participate in it.Clause 6 Design of boilers should accord with requirements for safety and reliability. Strength of steel boilers pressurized parts should be calculated and examined according to GB9222 Strength Calculation of Tube Pressurized parts of boiler or JB3622 Strength Calculation of Shell Boilers Pressurized Parts.Clause 7 Manufacture of boilers pressurized parts should accord with requirements in this regulations and related regulations in boiler special technology standards. Quality of boilers safety accessories should accordwith related technology standards.Boilers without complete safety valve, thermometer, pressure meter, soil discharge valve (drain valve), vent valve shouldn’t be allowed leave factory.Clause 8 When boilers leave factory, the following technical materials related to safety must be attached:(1) Boilers layouts (general layout, installation layout, layouts of main pressurized parts);(2) Strength calculation document of pressurized parts;(3) Number of safety valves and calculation document of pipeline diameter (throat diameter) (for boiler whose rated outlet hot-water temperature exceeds or equals to 100℃)(4) Water flow chart and calculation document of hydraulic pressure (expect shell boilers with natural circulation);(5) Quality certificate of boilers;(6) Installation instruction and use instruction of boilers;(7) Notification of modification on design of pressurized parts.Clause 9 New manufactured boilers should have metal nameplates and it must be installed on obvious position. There must have the following items at least on the metal nameplate:(1) Boiler type;(2) Boiler product numbering in the manufacturer;(3) Rated thermal power (MW);(4) Rated delivery pressure (MPa);(5) Rated outlet/inlet water temperature (℃);(6) Name of manufacturer;(7) Grade and number of boiler manufacture permit;(8) Manufacture data.For boilers leaving factory in bulk, steel seal should be printed on principal pressurized parts, such as boiler drum, header and so on, and product numbering of each part should be indicated.Clause 10 Boilers installation should accord with related regulations in TJ231 (six):6th Volume of Mechanical Equipment Installation Engineering Construction and Examination and Acceptance Regulation and GBJ242: Heating and Sanitary Engineering Construction and Examination and Acceptance Regulation.Subsection examination and acceptance and whole examination and acceptance of boilers installation quality should be done together by installation units and users. During hydraulic tests and whole examination and acceptance, boiler and pressure vessel safety supervision institutions of labor departments of cities, regions and super ones should dispatch personnel to participate in it.Clause 11Before and during installation,If installation units find that there is quality problems in pressurized parts which will effect boilers safe use, they should stop installation and report to boiler and pressure vessel safety supervision institutions of labor departments of cities, regions and super ones.Clause 12 Technology documents and certificate materials of construction quality should be handed over to users and kept in boiler technology archives.Clause 13 Boiler users should transact register procedures one by one according to Boiler Use Register Methods issued by the former Ministry of Labor and Personnel.Clause 14 Boiler users and their supervision departments should manage boilers and hot-water systems well according to Boiler House Safety Management Regulation issued by the former Ministry of Labor and Personnel.Clause 15 If pressurized parts of boiler are damaged and can’t safely operate to next inspection period, they should be repaired in time. It is forbidden to repair pressurized parts with pressure, and weld with water.Clause 16 For overhauling of pressurized parts of boiler, such as replacement, rectify, excavation and remedy of boiler drum, furnace tank, tank head, tube sheet and leftover circle, patch welding of principal welds and expansion jointing of tubes, etc, there should be layouts and construction technology projects. Techniques requirements of repair may refer to boiler industrial standards and related technology regulations. After finishing repair, boiler users should put technology materials in archives, such as layouts, materials quality certificates, examination certificate of repair quality and so on.Clause 17 During reconstruction from steam boilers to hot-water boilers or reconstruction of hot-water pressurized parts of boiler, there should be layouts, water flow charts, calculation document of hydraulic pressure, calculation document of strength and other materials. Matched with former boiler, water treatment measures, safety accessories, stabling-pressure equipment, circulating water pumps, make-up water pumps should pass technology examination and have corresponding materials. Construction technology requirements should accord with related technology standards of boiler’s manufacture and installation.After finishing reconstruction, boiler users should put technology materials in archives, such as layouts of reconstruction, calculation materials, materials quality certificates, examination certificate of construction quality and so on.Chapter 3 MaterialsBefore using main materials of boilers, such as boiler steel plate, boiler pipe, welding materials and so on, boiler manufacturers should check and accept. Only after their quality is verified, they can be used.For boilers whose rated thermal power is less than or equals to 4.2MW and delivery temperature is lower than 120℃, if their main materials have complete original certificates and their signs are clear and complete, they can be waived of examination.For materials with stable quality and awarded product safety and quality certificate by the boiler and pressure vessel safety supervision institutions of Ministry of Labor, they can be waived of examination; otherwise, they can’t.Clause 18Metal materials of pressurized parts of boiler, weld rod, weld wire,Weld flux, etc should accord with related regulations of national, industrial and ministry standards. Material manufacturers should guarantee materials’ quality and provide quality certificates. Metal materials, weld metals and pressure-bearing casts should have stipulated strength, toughness, elongation and good corrosion resistance ability under use conditions.Steel plates, steel tubes, weld materials used in repair of steel pressurized parts of boiler should have same or similar grade as original materials at the repair parts.Clause 19 Metal materials used in pressurized parts of boiler should be chosen according to the following regulations:(1) Steel plateTable 3-1Kind of steel Steel grade Technology standardApplicable operationpressure range MPa Q235-A①Q235-B①Q235-C①GB3274 ≤1.015①, 20①GB711 ≤1.020R②GB6654 ≤1.25Carbonsteel20g GB713 ≤5.912Mng 16Mng GB731 ≤5.9Low-alloysteel16MnR②GB6654 ≤1.25Annotation: ① Is limited to use in boilers whose rated outlet hot-water temperature is lower than 120℃.②should have aging impact test and be qualified.(2) Steel tubeTable 3-2Applicable rangeKind of steel Steel gradeTechnologystandard Use Operationpressure MPaHeating surfacetube10, 20 GB8163Header, pipeline≤1.0Heating surfacetube10, 20 GB3087Header, pipeline≤5.9Heating surfacetubeCarbonsteel20G GB5310Header, pipelineNo limitsAnnotation: In GB8163, steel 10 and 20 are limited to used in boilers whose rated outlet hot-water temperature is lower than120℃.(2) ForgingTable 3-3Applicable rangeKind of steel Steel gradeTechnologystandard UseOperationpressure MPa Q235-AQ235-BGB700 ≤2.5Carbonsteel10, 25 GB699Header lid,flange, handhole lid ≤5.9(4) Steel casting Table 3-4Kind of steel Steel grade Technology standardApplicable nominal pressure range MPaZG200-400 GB5676 ≤6.3Carbon steelZG230-450 GB979 Nolimits Annotation: Hollow pressurized steel castings should have hydraulic testaccording to GB1048.(5) Iron castingTable 3-5Applicable rangeName of iron cast GradeTechnologystandardNominaldiameter mmOperationpressure MPa<300 ≤0.8Grey castiron Not lower thanHT150GB9439<200 ≤125Malleable cast iron KTH300-06KTH330-08KTH350-10KTH370-12GB9440 <100 ≤1.6Nodular graphite ironQT400-17QT420-10GB1348 <100 ≤2.5Annotation: ① Not allowed to use grey cast iron to manufacture soil discharge valves, drain valves and exhaust bending tubes.②Square-shape iron cast economizer tubes and elbows ofboilers, whose rated delivery pressure is lower than or equalsto 1.6MP, can be manufactured using grey cast iron whosegrade is not lower than HT150 according to JB2192. Squareiron cast economizer tubes and elbows of boilers, whoserated delivery pressure is lower than or equals to 2.5MP, canbe manufactured using grey cast iron whose grade is notlower than HT200 according to JB2192. In factories, iron castparts of economizer should have hydraulic tests, whosepressure should be 2.5 times of boiler rated deliverypressure.③Pressure-bearing iron castings only can have patch weldsif there are special regulations besides technologyrequirements. Eccentricity of iron castings shouldn’t exceedthe stipulated value in the layouts.(6)Fasting partTable 3-6Applicable range Kind of steel Steel grade Technology standard Use Operation pressure MPaTwin bolt, bolt Q235-A·F Q235-B·F GB700 Nut≤1.25 Twin bolt, bolt Q235-A Q235-B GB700 Nut ≤1.6Twin bolt, bolt 25 GB699 NutNo limits Twin bolt, bolt Carbon steel35 GB699 Nut No limits(7) Pulling-resting partSteel used in pulling-resting parts of boilers must be killed steel andshould accord with the regulations about steel in GB715 or GB699. Platepulling-resting parts should used steel in Table 3-1.(8) Weld rod, weld wire, weld fluxWeld rods used in welding pressurized parts should accord withregulations in GB5117, GB5118 and GB983; weld wire should accord withregulations in GB1300; weld flux used in carbon steel submerged arc weldingshould be accord with regulations in GB5293.Clause 20 Substitution of materials pressurized parts of boiler should beapproved by technology departments of the materials substitutioncorporation(including departments of design and techniques).If the substitution steel isn’t listed in national, industrial or ministrystandards, substitution corporations should provide technology evidences tothe boiler and pressure vessel safety supervision institutions of province levellabor departments for examination and approval.If material substitution comes across one of the following situations, itshould be approved by original design corporation, and be sent to originallayout approval department for putting on records:(1) Substitute material with lower strength for one with higher strength;(2) Substitute material with less thickness for one with greater thickness(except heating surface tubes).(3) Nominal external diameter of substitutive steel tube doesn’t equal tothat of original one.Clause 21 If foreign steel is used in pressurized parts of boiler, it should accord with the following requirements:(1) Steel grade should be the one listed in steel standards of foreign boilers, or its chemical ingredients, mechanical properties and welding properties should be similar with boiler steel in home, and be listed in other foreign steel standards.(2) It should be examined and accepted according to technology standards and conditions in the order contract. It only can be used after verifying its qualification.(3) Before first use, it should have welding techniques assessment and modeling techniques test. It only can be used after verifying its qualification.(4) Boiler strength calculation should be done based on this steel’s technology standard or performance data stipulated in technology conditions.(5) Steel not listed in standards or resistance welding boiler tube listed in standards should be approved by the boiler and pressure vessel safety supervision institutions of province level labor departments.If steel manufacturers produce foreign grade steel, they must be approved by Bureau of China State Technology Supervision and Ministry of Metallurgy in advance. And the steel should be examined and accepted completely according to foreign standards of this steel grade. Before batch manufacture, it should pass technology appraisement.Clause 22 Corporations of boiler manufacture, installation, repair should setup the management system of material storage and use. Steel used in pressurized parts of boiler should have sign. Before steel plates of pressurized parts are cut down, the sign must be replaced for easy identification.Clause 23For welding materials used in pressurized parts of boiler, users should set up strict management system of storage, drying, distribution and recycle.Chapter 4 Structure of the Steel Boiler1. Opening expanding tube holes on pressurized parts should accord with Item 51 of Steam Boiler Safety Technology SupervisionRegulation.2. Heating surface tubes of boilers and pipelines of boiler can adopt elbows without direct section. Disposition and technology of elbow without direct section should accord with Item 54 of Steam Boiler Safety Technology Supervision Regulation.3. For horizontal inner burning hot-water boilers, related requirements of T-shape joint used in furnace tank, tube sheet and boiler shell should accord with Item 48, Item 77, Item 84 of Steam Boiler Safety Technology Supervision Regulation.4. For boiler whose rated delivery pressure is lower than or equals to 1.6MPa, the manhole plate,headhole plate, handhole plate of their pressurized parts can adopt flange connection structure.Clause 24 Structure of steel boilers should accord with the following basic requirements:(1) Thermal expansion during operation of each part should be considered in design period;(2) Heating surface of each part should get reliable cooling for preventing evaporation. External diameter of each heating surface tube in hearth should exceed 38mm;(3) Each pressurized part of boilers should have enough strength. Structure of each pressurized part and disposition of holes and welds should avoid or decrease compound stress and stress concentration.(4) Boilers should have reliable safety protect measures;(5) Soil exhaust structure should be beneficial to soil exhaustion;(6) Boiler hearths should have enough pressure-bearing ability, reliable anti-explosion measures, and good seal ability;(7) During bearing design load, boiler load-pressure structures should have enough strength, stiffness, stability and anti-corrosion ability;(8) Structure of boilers should be convenient for installation, operation, overhaul and cleaning inner and outer parts.If there are parallel connection loops on boiler heating surfaces, water flow should be reasonably distributed in order to decrease temperaturedifference between loops.Clause 26 For shell horizontal external burning boilers, design and manufacture corporations must take measures to resolve the problems, such as tube sheet crackles or leakage and boiler shell bulges and so on.Clause 27 Hand holes on header and anti-clinkering box should avoid direct contact with fire.Clause 28 In order to avoid post combustion at fuel boiler’s tail, reliable ash blowing and fire-extinguishing devices should be furnished.Clause 29When cooling is not strong enough and wall temperature of any part not working as heating surface exceeds material’s permitted temperature, the part should have adiabatic measures.Clause 30 Principal welds of boiler main pressurized parts (vertical and circle welds of boiler drum, furnace tank and header, butt welds of tank head, tube sheet and splice weld seam of revert circle) should adopt welding penetrated butt weld.Clause 31 For connection between downcomer whose external diameter is less than or equals to 108mm and header, groove should be cut on tube end or header for penetrated welding.Clause 32 Vertical welds of adjacent shells on boiler drum and furnace tank, butt welds of tank head, tube sheet, furnace tank top or splice weld seam of revert circle, and vertical welds of adjacent shells shouldn’t connect with each other. Length of outer arc between welds’ concentricity lines is at least 3 times of thickness of the thicker steel plate, and not less than 100mm.Clause 33 For butt welding of edge-turnup parts (such as tank head, furnace tank top and other cylinder-shape parts), the distance from beginning point of edge-turnup to welds’ concentricity lines should accord with regulations in Table 4-1Table 4-1 mmThickness of edge-turnup part S Distance L mmS≤10 ≥2510<S≤20 ≥S+1520<S≤30 ≥- S/2+25 For sphericity tank head, it is allowed that L=0.Clause 34 Butt welds of heating surface tubes and pipelines of boiler shouldn’t be disposed on the bending parts of tubes or pipelines (except circle tubes).Distance from concentricity lines of butt welds on direct section of heating surface tubes to tubes bending beginning points, or to outer wall of boiler drum and header, and to edges of tubes supports and hangers shouldn’t be less than 50mm. On the direct sections of pipelines of boiler, distance from concentricity lines of butt welds to tubes bending beginning points shouldn’t be less than tubes external diameter.For boilers whose rated outlet hot-water temperature is lower than 120℃, pressing elbows can be adopted, and butt welds can disposed at the bending beginning points.On the direct sections of heating surface tubes, distance between butt welds shouldn’t be less than 150mm.Clause 35 Welding parts shouldn’t be on principal welds of pressurized parts or in their adjacent areas. If it can’t be avoided, welds of welding parts can go through the principal welds, but can’t be ended on principal welds of pressurized parts or in their adjacent areas in order to avoid stress concentration.Clause 36 Pulling-resting parts in boiler drum shouldn’t adopt butt welds. Clause 37 Concentricity lines of the steel plates on the two sides of boiler drum’s vertical weld should be aligned. It is better that concentricity lines of the steel plates on the two sides of boiler drum’s circle weld should bealigned. And that only one edge is aligned is also allowed.When steel plates with different thickness joint, if value of nominal edge difference on any side of two sides exceeds the edge difference stipulated in Item 54, the thicker plate should be cut to align with the edge of the thinner one. The cut surface should be smooth and its slope shouldn’t exceed 1:4. If necessary, width of welds should be limited in the slope surface, see Fig. 4-1.Clause 38 Disposition of tube holes on pressurized parts should accord with the following regulations:(1) Expanding tube holes can’t be opened on welds. Distance from the centers of expanding tube holes to edge-turnup beginning points of tube sheets shouldn’t be less than 1.8d (d is the diameter of tube holes), and not be less than 0.5d+12mm.(2) Welding tube holes should avoid to be opened on welds. Overlap of heat-affected zones of tube holes’ welds and their adjacent welds should be avoided. If it can’t be avoided, only after verifying qualification of welds in 60mm areas around tube holes (if tube holes’ diameter exceeds 60mm, then the value is the diameter) through ray inspection (according to Item 64 of this regulation), and there isn’t slag at the edge of tube holes, holes can be opened on welds or in adjacent areas. For boiler rated outlet hot-water temperature exceeds or equal to 120℃, pipe joints on welds should have stress relief heat-treatment after welding.Clause 39 Number and disposition of person holes, head holes, hand holes, cleanness holes and inspection holes opened on boilers should meet requirements of installation, inspection and cleanness.Person holes’ lids and head holes’ lids on the pressurized parts of boiler should adopt inner-closed structure. It is better for hand holes’ lids to adopt inner-closed structure, and lids’ structure should guarantee pads can’t be blown out; person holes’ doors on boiler wall should furnished with firm bolts; it should be guaranteed that watch holes’ lids on boiler wall can’t be burst open.Clause 40 For water-tube boilers whose boiler drum’s inner diameter exceeds or equals to 800mm and shell boilers whose boiler drum’s inner diameter exceeds 1000mm, person holes should be opened on tank head (tube sheet) or drum.For shell boilers whose boiler drum’s inner diameter is 800~1000mm, at。

TSG G001-2012《锅炉安全技术监察规程》第14.2条施行时间

TSG G001-2012《锅炉安全技术监察规程》第14.2条施
行时间
佚名
【期刊名称】《江苏锅炉》
【年(卷),期】2013(000)002
【摘要】14.2施行时间本规程自2013年6月1日起施行。

1996年8月19日原劳动部颁布的《蒸汽锅炉安全技术监察规程》(劳部发[1996]276号)、1991年5月20日颁布的((热水锅炉安全技术监察规程》(劳锅字[1991]8号)及1997年2月14日发布的“关于印发《修订后的〈热水锅炉安全技术监察规程〉有关章节》的通知”(劳锅字[1997]74号)、1993年11月28日颁布的((有机热载体炉安全技术监察规程》(劳部发[1993]356号)同时废止。

【总页数】1页(P33-33)
【正文语种】中文
【中图分类】TK175
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热水锅炉安全技术监察规程部分条款说明

热水锅炉安全技术监察规程部分条款说明前言热水锅炉是工业生产和居民生活中常用的一种设备,其安全性、可靠性和节能性直接关系到生产、生活的正常进行和人身财产安全。

为了保障热水锅炉的安全,保护人民群众的生命财产安全,制定了相应的安全技术监察规程。

第一条适用范围热水锅炉安全技术监察规程适用于所有使用燃气、燃油和燃煤等作为热源的热水锅炉及其附属设备。

第二条设备安装和改造1.热水锅炉和其附属设备应安装在符合要求的房间内或建造专门大楼,且必须符合国家、行业标准规定的安装、使用和检验要求。

2.热水锅炉和其附属设备的改造必须经过相关审批部门批准, 并由专业的安装维修人员进行维修和改造。

3.改造工程完成后,必须按规定进行安全技术检验并取得合格证书。

第三条监测和检验1.对热水锅炉主要部件如压力容器、泵、燃烧器、控制器等进行周期性或定期的安全技术监察和检测。

2.监察和检测包括稳态监测、运行监测、应急监测等,通过测量、观察、试验等方式实现对热水锅炉运行状态的全面监测和检验。

3.接到安全技术监察和检验通知的生产单位,必须积极配合安全技术监察部门的工作,并提供必要的信息、资料和技术支持。

第四条事故处理和报告1.热水锅炉发生事故后,生产单位应立即启动应急措施,保护现场安全和工作人员的人身安全。

2.发生较大事故的,应立即上报安全生产监管部门,并根据要求组织事故调查和处理。

调查结果应及时报告并采取必要措施加以整改,确保此类事故不再发生。

3.生产单位和从业人员在安全工作中发现隐患或存在安全问题时,应当积极上报并按照有关规定进行处理。

第五条惩处和追究责任1.对违反本规程规定的单位和个人,将给予相应的行政处罚、经济处罚或者追究刑事责任。

2.对于安全事故责任人,将依法追究其法律责任,并按照规定的程序进行处理。

结论热水锅炉安全技术监察规程部分条款说明了热水锅炉的安装、改造、监测和检验、事故处理和报告、惩处和追究责任等方面的要求,这些规程有助于保障热水锅炉的安全和可靠运行,为人民群众生产、生活提供坚实的安全保障。

王丽文库之热水锅炉安全技术监察规程

热水锅炉平安技术监察规程第一章总那么第1条为了确保锅炉平安运行,保护人身平安,促进国家经济的开展,根据?锅炉压力容器平安监察暂行条例?的有关规定,制定本规程。

第2条本规程适用于承压的以水为介质的固定式蒸汽锅炉及锅炉范围内管道的设计、制造、安装、使用、检验、修理和改造。

汽水两用锅炉除应符合本规程的规定外,还应符合?热水锅炉平安技术监察规程?的有关规定。

本规程不适用于水容量小于30L的固定式承压蒸汽锅炉和原子能锅炉。

第3条各有关单位及其主管局部必须执行本规程的规定。

县级以上各级人民政府劳动行政局部负责锅炉平安监察工作。

各级劳动行政局部锅炉压力容器平安监察机构〔劳动行政局部锅炉压力容器平安监察机构以下简称平安监察机构〕负责监视本规程的执行。

第4条本规程的规定是锅炉平安治理和平安技术方面的根本要求。

有关技术标准的要求假设与本规程的规定不符时,应以本规程为准。

第5条进口固定式蒸汽锅炉或国内生产企业〔含外商投资企业〕引进国外技术按照国外标准生产且在国内使用的固定式蒸汽锅炉,也应符合本规程的根本要求。

特殊情况如与本规程根本要求不符合时,应事先征得劳动部平安监察机构同意。

第6条有关单位假设采用新结构、新工艺、新材料等新技术,如与本规程不符时,须将所做试验的条件和数据或者有关的技术资料和依据送省级平安监察机构审核同意后,报劳动部平安监察机构审批。

第二章一般要求第6条锅炉的设计必须符合平安、可靠的要求。

钢制锅炉受压元件的强度应按GB9222?水管锅炉受压元件强度计算?或JB3622?锅壳式锅炉受压元件强度计算?进行计算和校核。

第7条锅炉受压元件的制造应符合本规程的要求并符合锅炉专业技术标准的有关规定。

锅炉平安附件的质量应符合有关技术标准。

平安阀、温度计、压力表、排污阀〔或放水阀〕、排气阀不全的锅炉不准出厂。

第8条锅炉出厂时,必须附有以下与平安有关的技术资料:〔1〕锅炉图样〔总图、安装图和主要受压部件图〕;〔2〕受压元件的强度计算书;〔3〕平安阀数目和流道直径〔喉径〕的计算书〔对额定出口热水温度高于或即是100℃的锅炉〕;〔4〕水流程图及水动力计算书〔自然循环的锅壳式锅炉除外〕;〔5〕锅炉质量证实书;〔6〕锅炉安装说明书和使用说明书;〔7〕受压元件设计更改通知书。

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热水锅炉安全技术监察规程第一章总则一、《热水锅炉安全技术监察规程》适用范围包括电加热热水锅炉和锅炉范围内管道。

二、进口固定式热水锅炉或国内生产企业(含外商投资企业)引进国外技术,按照国外标准生产且在国内使用的固定式热水锅炉,也应符合本规程的基本要求。

特殊情况如与本规程基本要求不符合时,应事先征得劳动部锅炉压力容器安全监察机构同意。

第1条为了保证热水锅炉安全经济运行,促进国发经济的发展,保护人身安全,根据《锅炉压力容器安全监察暂行条例》的有关规定,特制定本规程。

第2条本规程适用于同时符合下列条件的以水为介质的固定式热水锅炉(以下简称锅炉):(1)额定热功率大于或等于0.1MW。

(2)额定出水压力大于或等于0.1Mpa(表压,下同)。

对于上述范围以外的固定式承压锅炉,省级劳动部门锅炉压力容器安全监察机构可参照本规程结合本地具体情况制订安全监察规定。

汽水两用锅炉应符合《蒸汽锅炉安全技术监察规程》,并应符合本规程。

本规程不适用于电加热的锅炉。

第3条锅炉的设计、制造、安装、使用、检验、修理和改造必须符合《锅炉压力容器安全监察暂行条例》的有关规定,并符合本规程。

各有关单位及其主管部门必须认真执行本规程。

各级劳动部门锅炉压力容器安全监察机构负责监督本规程的执行。

第4条本规程的规定是锅炉安全技术方面的基本要求。

有关技术标准的要求如果低于本规程或与本规程相抵触,应以本规程为准。

第5条有关单位由于采用新技术(如新结构、新工艺等),其要求与本规程不符时,应当进行必要的科学试验,并经省级主管部门和省级劳动部门锅炉压力容器安全监察机构审查同意后,在指定单位和一定时间内试用,同时报劳动部锅炉压力容器安全监察局备案。

第二章一般要求锅炉安装质量的分段验收和水压试验,由锅炉安装单位和使用单位共同进行。

总体验收时,除锅炉安装单位和使用单位外,一般还应有劳动部门锅炉压力容器安全监察机构派员参加。

第6条锅炉的设计必须符合安全、可靠的要求。

钢制锅炉受压元件的强度应按GB9222《水管锅炉受压元件强度计算》或JB3622锅壳式锅炉受压元件强度计算》进行计算和校核。

第7条锅炉受压元件的制造应符合本规程的要求并符合锅炉专业技术标准的有关规定。

锅炉安全附件的质量应符合有关技术标准。

安全阀、温度计、压力表、排污阀(或放水阀)、排气阀不全的锅炉不准出厂。

第8条锅炉出厂时,必须附有下列与安全有关的技术资料:(1)锅炉图样(总图、安装图和主要受压部件图);(2)受压元件的强度计算书;(3)安全阀数量和流道直径(喉径)的计算书(对额定出口热水温度高于或等于100℃的锅炉);(4)水流程图及水动力计算书(自然循环的锅壳式锅炉除外);(5)锅炉质量证明书;(6)锅炉安装说明书和使用说明书;(7)受压元件设计更改通知书。

第9条新制造的锅炉必须有金属铭牌,并应装在明显的位置。

金属铭牌上至少应载明下列项目:(1)锅炉型号;(2)制造厂锅炉产品编号;(3)额定热功率(MW);(4)额定出水压力(Mpa);(5)额定出口/进口水温(℃);(6)制造厂名;(7)锅炉制造许可证级别和编号;(8)制造处月。

对散装出厂的锅炉,还应在锅筒、集箱等主要受压部件的封头上打上钢印,注明该部件的产品编号。

第10条锅炉的安装应符合TJ231(六)机械设备安装工程施工及验收规范第六册破碎粉磨设备、卷扬机、固定式装油机、工业锅炉安装及GBJ242《采暖与卫生工程施工及验收规范》的有关规定。

安装质量的分段验收和总体验收,由安装锅炉的单位和使用单位共同进行。

水压试验和总体验收时,应有市、地以上(含市、地)劳动部门锅炉压力容器安全监察机构派员参加。

第11条锅炉装前和安装过程中,安装单位如发现受压部件存在影响安全使用的质量问题时,应停止安装并报告市、地以上(含市、地)劳动部门锅炉压力容器安全监察机构。

第12条安装锅炉的技术文件和施工质量证明资料,在安装完工后,应移交使用单位存入锅炉技术挡案。

第13条使用锅炉的单位应有尽有按照原劳动人事部颁发的《锅炉使用登记办法》搞好锅炉及热水系统的使用管理工作。

第14条使用锅炉的单位及其主管部门应按照原劳动人事部颁发的《锅炉房安全管理规则》搞好锅炉及热水系统的使用管理工作。

第15条锅炉受压无伯损坏,不能保证安全运行至下一个检修期时,应及时修理。

禁止在有压力的情况下修理锅炉受压元件,修理时不应带水焊接。

第16条锅炉受压元件的重大修理,如锅筒、炉胆、封头、管板、下肢圈、集箱的更换、敌表、挖补、主焊缝的补焊及管子的胀接改烛接等,应有图样和施工技术方案。

修理的技术要求可参照锅炉专业技术标准和有关技术规定。

修理完工后,使用锅炉的单位应将图样、材料质量证明书、修理质量检验证明书等技术资料存入锅炉技术档案内第17条蒸汽锅炉改为热水锅炉或者热水锅炉受压元件的改造应有图样、水流程图水动力计算书,强度计算书等计算资料,与锅炉配套的原水处理措施、安全附件、定压装置、循环水泵和补给水泵也应进行技术校核,并应有技术校核资料。

施工的的技术要求应符合锅炉制造和安装的有关技术标准。

锅炉改造完工后,使用锅炉的单位应将改造的图样、计算资料、材料质量证明书、施工质量检验证明书等技术资料存入锅炉技术挡案内。

第三章材料用于锅炉的主要材料如锅炉钢板、锅炉钢管和焊接材料等,锅炉制造厂应按有关规定进行入厂验收,合格后才能使用。

用于额定热功率小于或等于4.2MW且额定出水温度小于120℃锅炉的主要材料如原始质量证明书齐全,且材料标记清晰、齐全时,可免于复验。

对于质量稳定并取劳动部锅炉压力容器安全监察机构产品安全质量认可的材料,可免于复验。

否则,不能免于复验。

第18条锅炉受压元件所用的金属材料及焊条、焊丝、焊剂等应符合有关的国家标准、行业标准或部标准的规定。

材料制造厂必须保证材料质量,并提供质量证明书。

金属材料、焊缝金属及承压铸件在使用条件下应具有规定的强度、韧性和延伸率并具有良好的搞腐蚀性。

钢制锅炉受压元件修理用的钢板、钢管和焊接材料应与所修部位原来的材料牌号相同或类似。

第19条用于锅炉受压元件的金属材料应按如下规定选用:(7)拉撑件锅炉拉撑件使用的钢村必须为镇静钢,且应符合GB715的规定或者GB699中20钢的规定。

板拉撑件应采用表3--1中的钢。

(8)焊条、焊丝和焊剂焊接受压元件使用的焊条应符合GB5117、GB5118、GB983的规定,焊丝应符合GB1300的规定,碳素钢埋弧焊用焊剂应符合GB529的规定。

第20条锅炉受压元件的材料代用必须经材料代用单位的技术部门(包括设计和工艺部门)同意。

若采用没有列入国家标准、行业标准或部标准的钢材代用时,代用单位应提出技术依据报省级劳动部门锅炉压力容器安全监察机构审批。

材料代用遇有下列情况之一时,还应征得原设计单位同意,并报原图样审批单位备案。

(1)用强度低的材料代替强度高的材料。

(2)用厚度小的材料代替厚度大的材料(受热面管子除外)。

(3)代用的钢管名义外径不同于原来的钢管名义外径。

第21条锅炉受压元件采用国外钢村,应符合以下要求:(1)钢号应是国外锅炉用钢标准所列的钢号或者化学成份、力学性能、焊接性能与国内允许用于锅炉的钢村相类似,并列入国外其他钢材标准的钢号。

(2)应按订货合同规定的技术标准和技术条件进行验收,合格后才能使用。

(3)首次使用前,应进行焊接工艺评定和成型工艺度难,满足技术要求后才能使用。

(4)应采用该钢材的技术标准和技术条件所规定的性能数据进行锅炉强度计算。

(5)采用未列入标准的钢材或已列入标准的电阻焊锅炉管,应经省级劳动部门锅炉压力容器安全监察机构同意。

同内钢厂若生产国外钢号的钢材,须事先征得国家技术监督局和冶金部的同意,应完全按照该钢号国外标准的规定进行生产和验收,批量生产前应通过技术鉴定。

第22条锅炉制造、安装和修理单位必须建立材料保管和使用的管理制度。

第23条对于锅炉受压元件用的焊接材料,使用单位必须建立严格的存放、烘干、发放和回收管理制度。

第三章钢制锅炉的结构一、受压元件上形接管孔应符合《蒸汽锅炉安全技术监察规程》第51条的规定。

二、锅炉受热面管子以及锅炉范围内管道可采用无直段弯头,采用无直段弯头的布置及技术要求应符合《蒸汽锅炉安全技术监察规程》第54条的规定。

三、对于卧室内燃锅壳热水锅炉,其炉胆与管板、锅壳采用T形对接连接的关要求应符合《蒸汽锅炉安全技术监察规程》第48条、77条、84条的规定。

四、额定出水压力小于或等于1.6Mpa的锅炉,其受压元件的人孔盖、头也盖、手孔盖可采用法兰连接结构。

第24条钢制锅炉的结构应符合下列基本:(1)设计时必须考虑结构各部分在运行时的热膨胀;(2)锅炉各部分受热面应得到可靠的冷却并防止汽化、炉膛内各受热面管的外径应大于38mm;(3)锅炉各受压部件应有足够的强度。

受压元、部件结构的形式、开孔和焊缝的布置应尽量避免或减少复合应力和应力集中;(4)锅炉必须装有可靠的安全保护设施;(5)锅炉的打破常规结构应利于排污;(6)锅炉的炉膛结构应有足够的承压能力和可告的防爆措施,并应有良好的密封性;(7)锅米承重结构在承受设计载茶时应具有足够的强度、刚度、稳定性及防体育馆性;(8)锅炉结构应便于安装、运行操作、检修和清洗内外部。

第25条锅炉受热面有并联回中时,应全理地分配水流量、尽量减小各回路之间的出水温差。

第26条对圩锅壳式卧式外烯锅炉,商讨、制造单位必须采取技术措施解决管板裂纹或泄露漏及锅壳鼓包等第27条集箱和防焦箱上的手孔应避免直接与炎焰接角。

第28条为防止烯油锅炉尾部发生二次燃烧,应装设可靠的吹灰及来炎装置。

第29条一切不作为受热面的元气件,由于冷却不够,壁温超过该元件所用材料的许用温度时,应予绝热/第30条锅炉主要受压元件的主焊缝(锅筒、炉胆和集箱的纵向和环向焊缝,封头、管板、下肢圈的拼接焊缝等)应采用全焊透的对接焊接。

第31条外径大于或等于108mm的下降管与集箱连接时,应在管端或集箱上开坡口,以利焊透。

第32条锅筒和胆上相邻筒节的给向焊颖,以及封头、管板、炉但顶或下脚圈的拼接焊缝与相邻筒节的纵向焊缝,都不应彼此相连,其焊缝中心线间外圆弧长至少应为较百姓钢板百姓度的3倍,且不小于100mm。

第33条扳边的元件(如封头、炉胆顶等)与圆筒形元件对接焊接时,扳边弯曲超点至焊缝中心线的距离(L)应符合表4--1的规定。

第34条受热湎管子以及锅炉范围内管道的对接焊缝不应布置在管子或管道的弯曲部分(盘旋管除外)。

受热面管子直段上的对接焊缝的中心线至管子弯曲起点或锅筒、集箱的外壁以及管子支、吊架边缘的距离,不应小于50mm。

锅炉范围内管道的直段上,对接焊缝的中心线至管道弯曲超点之间的距离不应小于管道的外径。

额定出口热水温度低于120℃的锅炉可采用冲压弯头,对接焊缝可布置在弯曲起点。

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