CJJ 6-1985 Technical regulations for safety in the maintenance of drainage pipes CJJ6-85
Some standard content:
Ministry of Urban and Rural Construction and Environmental Protection
Ministry of Labor and Personnel Standard
People's Republic of China
Safety Technical Regulations for Drainage Pipeline Maintenance
CJJ 6—85
Editing Department: Tianjin Municipal Engineering Bureau
Ministry of Urban and Rural Construction and Environmental Protection
Approving Department:
Ministry of Labor and Personnel
Effective Date: August 1, 1985
5—15—1
(85)Cheng Gong Zi No. 6
In order to ensure the work safety and health of drainage pipeline maintenance workers, in accordance with the former State Administration of Urban Construction and the State Administration of Labor (81) Cheng Fa Zi No. 247 document The "Drainage Pipeline Maintenance Safety Technical Regulations" compiled by the Tianjin Municipal Engineering Bureau has been approved as a ministerial standard after our joint review, numbered CJ6-85, and will be implemented from August 1, 1985. If you have any questions or comments during implementation, please write to the Tianjin Municipal Engineering Bureau Drainage Pipeline Maintenance Safety Technical Regulations Management Group for revision and reference.
Ministry of Urban and Rural Construction and Environmental Protection
Ministry of Labor and Personnel
1985 January 7th
Chapter 1
Chapter 2
Section 1
Section 2
Chapter 3
Section 2
Section 3
Ground operations
Operation site
Pipeline inspection, dredging and maintenance
And down-to-earth operations
Operation requirements
Precipitation and ventilation
Gas detection
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-15 —4
-15—4
-15—4
—15—4
—15—4
5-15—4
5-15—4
Section 4
Chapter 4
Section 1
Section 2
Chapter 5
Lighting and Communication
5--15-4
Anti-toxic Equipment and Protective Equipment
..... 5-155
Anti-toxic equipment
Protective equipment
Explanation of terms used in this regulation
Additional explanation
.5-15—5
List of the main editors, participating units and main drafters of this standard…． 5—15—65-—15-- 3
Chapter 1 General
Article 1.0.1 In order to ensure the work safety and physical health of drainage pipe maintenance personnel and improve the technical level of drainage pipe maintenance, this regulation is formulated based on the principle of prevention first.
Article 1.0.2
This regulation applies to:
1. Inspection of drainage pipes
2. Sulfur ventilation of drainage pipes,
3. Maintenance of drainage pipes and their ancillary structures. Article 1.0.3 In order to strengthen the maintenance and management of drainage pipes, maintenance personnel must be organized to study and implement this regulation. Article 1.0.4 If there is any violation of this regulation, the safety officer has the right to decide that the maintenance personnel should stop working and report to the relevant competent authorities in a timely manner. Article 1.0.5 The safety of electromechanical equipment should be carried out in accordance with the corresponding chapters of the "Factory Safety and Hygiene Regulations" and the "Technical Regulations for Safety of Construction and Installation Engineering" issued by the State Council.
Article 1.0.6 Pipeline maintenance personnel should undergo a physical examination once a year and establish a health registration card.
Chapter 2 Ground Operations
Section 1 Operation Site
Article 2.1.1 After the inspection well cover is opened, a safety cover must be added immediately or a guardrail must be set up. A triangular red flag should be hung during the day and a red light should be lit at night. Area.
Article 2.1.2 Fires must be strictly prohibited at the work site, and vehicles and pedestrians are not allowed to enter the work site.
Article 2.1.3 After obtaining the consent of the public security department to cut off traffic, safety signs should be set up at both ends of the road section.
Article 2.1.4 When working in a busy area, a special person should be assigned to maintain the order on the site. Section 2 Pipeline Inspection, Dredging and Repair
Article 2.2.1 When checking the internal conditions of the pipeline, it is advisable to use tools such as reflectors or TV detectors.
Article 2.2.2 When pulling the wire rope through the bamboo strips,
For wells with a depth of no more than 3m,
(see Table 1 for the specifications of the wire rope used) and digging out sludge, it is not advisable to go down and operate. When the pipe section to be closed for repair, it is advisable to use tools such as rubber gas plugs.
Article 2.2.3 When the pipe section to be closed for repair, it is advisable to use tools such as rubber gas plugs.
It is advisable to use electric or pneumatic rope guides, motorized trolleys, high-pressure flushing vehicles and mud suction vehicles to improve working conditions. Chapter III Underground Operations
Section 1 Operation Requirements
Article 3.1.1 When it is necessary to go down to the well, the approval procedures must be carried out. The operation
team leader shall fill in the "Safety Operation Ticket for Going Down the Well" (see Table 2), and only after approval by the technical person in charge of the maintenance team can the well be lowered.
Article 3.1.2 For each task, the management personnel must check the pipe diameter, water depth, tide and sewage discharge of nearby factories, and fill in the "Safety Operation Ticket for Going Down the Well".
Article 3.1.3 Before going down the well, the work team (group) should do a good job of watering, ventilation, gas inspection and lighting the pipeline, and formulate protective measures and fill in the above work ticket.
Article 3.1. The personnel going down the well should undergo safety and technical training, learn how to use manual emergency and protective equipment, lighting and communication equipment. Article 3.1.5 When the operator goes down the well for operation, there should be two people to supervise him. If entering the pipeline, a supervisor should be added inside the well for intermediate communication. The supervisor shall not leave his post.
Open flames are strictly prohibited during underground operation.
Article 3.1.6
Article 3.1.7
For pipelines with a diameter of less than 0.8m, it is strictly prohibited to enter the pipeline for operation. Article 3.1. The continuous operation time for each downhole operation should not exceed one hour. Article 3.1.9
The following personnel shall not engage in downhole operations.
1. Women during menstruation, pregnancy and breastfeeding; 2. People with severe physical defects such as deafness, dumbness, muteness and retardedness; 3. People with severe chronic diseases such as deep myopia, ringworm, hypertension, allergic tracheitis, asthma, heart disease, etc.;
4. People with traumatic wounds that have not yet healed.
Section 2 Precipitation and Ventilation
Article 3.2.1 During the pipeline operation, the management personnel of the pipeline operation team (group) shall require the relevant stations to cooperate or install a temporary water system to reduce the water level in the operating section. Article 3.2.2 Before the pipeline is laid, the working cover and its upstream and downstream covers must be opened in advance for natural ventilation, and bamboo (wood) sticks must be used to stir the mud and water to disperse the harmful gases in it.
Article 3.2.3 After the rainwater pipe has been naturally ventilated, if the test results show that the gas in the drainage is still lacking in oxygen or the concentration of toxic gases exceeds the allowable value, natural ventilation or artificial ventilation should be continued during the drainage operation to make the oxygen content reach the specified value and the concentration of toxic gases drop below the allowable value, and then Article 4.1.3 shall be followed. Article 3.2.4 After the rainwater pipe has been naturally ventilated, if the concentration of explosive gases is still within the explosion range, artificial ventilation must be used during the drainage operation to reduce the concentration of explosive gases in the pipe to below the lower explosion limit. Article 3.2.5 When artificial ventilation is adopted,
"Generally, the air volume of the fan can be calculated according to the average wind speed in the pipeline
0.8m/s.
Section 3 Gas Detection
Section 3,3.1 Gas detection mainly determines the oxygen content of underground air and the concentration of common harmful gases.
Section 3.3.2 The oxygen content of underground air shall not be less than 18%, otherwise it is oxygen-free. The allowable concentration and explosion range of harmful gases are detailed in Table 3. Section 3.3.3 Simple and rapid detection methods such as colorimetry, instrumentation or biological methods should be used to detect underground gases.
Section 3.3.4 Gas detection personnel should receive professional technical training. In addition to cooperating with gas detection before underground operations, the detection of underground gas and factory sewage in the jurisdiction area should be regarded as a regular business to accumulate data and improve protective measures. Section 4 Identification and Communication
Section 8.4.1 The voltage of the system
is greater than 12V.
Explosion-proof lighting equipment must be used, and its power supply voltage must not be less than 3.4.2 The illumination on the working surface should not be less than 501x. 3.4.3 The communication between the upper and lower personnel should use wired or wireless communication equipment instead of shouting or gestures. Chapter 4 Anti-toxic equipment and protective equipment
1 Anti-separation equipment
4.1.Article 1
It is strictly forbidden to use filter-type gas masks and isolation-type gas masks. Isolation-type protective equipment for compressed air must be used as anti-gas equipment. Article 4.1.2 For sewage pipes and liquid-combined pipes, maintenance personnel must wear isolation-type protective equipment for compressed air when going down the well. Article 4.1.3 For rainwater pipes where the concentration of toxic gases contained in the anoxic system exceeds the allowable value, maintenance personnel should wear isolation-type protective equipment for compressed air when going down the well, or follow Article 3.2.3.
Section 2 Protective Equipment
Maintenance personnel must be equipped with a suspension safety belt when going down the well, and its performance must meet national standards. Article 4.2.1
Section 4.2.2 Maintenance personnel must wear safety belts, protective clothing and protective shoes when performing maintenance operations.
Article 4.2.3 When digging out the mud in the well or performing maintenance on the ground, you should wear a mask and take anti-turnover measures if necessary. Chapter 5 Appendix
The competent authorities for maintaining drainage pipes in various places should formulate safety operation rules in accordance with the provisions of Section 5.0.1 of this regulation and combine the specific local conditions. Section 5.0.2 If any problems are found during the implementation of this regulation, the editor-in-chief department shall be responsible for interpretation.
Use wire rope to dredge water pipes
Manpower clearing
(hand-cranked trolley)
Machine clearing
(motorized trolley)
150~900
550B00
830-1000
1050-1200
150300
550-800
850~1000
1050~1200
1250-1500
44.29~63.19
(4510 ~6444)
60,28—88,00
(6139~8770)
T8.52---112.33
(8017~11454)
e0,z0--88. 00
(61398770)
78, 42~112. 95 | | tt | | (8017-11480) | | tt | 1. This product adopts the 8×19 organic core specified by the national standard (GB1102-74).
2. When the internal thickness exceeds the pipe diameter, a larger diameter should be used. 8. The bamboo pieces must be made of green bamboo with a flat bamboo core, with a surface size of not less than 4×1cm and a length of not less than 4. The shapes are square grooves, rectangular masonry, and disturbed masonry. The area can be converted into spots after the spots are removed.
Shift (silver)
Shift location
Designer shift room
Factory operation situation
Safety operation ticket
Work report
Road
[Responsible person
Influence of materials
1, open and adjust ventilation situation (activation and time) 2, 9. Gas inspection results and report date 4. Opinions of the person in charge of the proposed anti-poison and explosion-proof measures (installation of protective equipment, artificial ventilation, etc.) Annual physical examination or physical examination results before the re-entry (in words) Safety officer's opinions and common gas allowable concentration and explosion range recommendations Short-term contact limit value Gas name (take air ratio ngmppm mg/mppm Decomposition cylinder General iodine iodine ion Explosion range K (volume)) 4.3-±5.5
12.5~74.2
200180
0,28]B,B~12. 8
（Signature）
(Signature）
Type estimation stock reason
Not round wall dye
Simple Xin Hua Mou Lin
Solution oxygen depression some do not
Note. Above, and below the common gas acid set listed in this table are oxygen, group, chlorine and carbon difluoride, among which (1) the low content of oxygen should meet the requirements of Article 3.3.2; (2) group with the whole open outside, can be exempted from testing, (8) oxygen content meets the requirements, ammonia and disulfide can be exempted from testing. Table, the case of the minimum reduction value of the inspection fiber with the "Industrial Enterprise Design Environmental Standard T33B-1 and related environmental standards. wwW.bzxz.Net
, the short-term exposure limit refers to the weighted average value of the concentration of harmful gases within 15m1n. At any time during the working day, the concentration of toxic gases should not be greater than this value. The operator should not be able to perform the work under this concentration for more than 15m1n. The maximum time for each work to be corrected is not less than 60ms0.5-15-5
Explanation of the terms used in this regulation
1. The terms that indicate that it is very strict and must be done in this way; positive terms use "must" and negative terms use "strictly prohibited". 2. The terms that indicate that it is strict and should be done in this way under normal circumstances use "should" for positive terms and "should not" or "must not" for negative terms. 3. The terms that indicate that a slight choice is allowed and that it should be done first when conditions permit use "should" or "may" for positive terms and "should not" for negative terms. 5—15—6
Additional Notes
List of the editorial unit, participating units
and main drafters of this standard
Main department: Tianzhang Municipal Engineering Bureau
Main drafters: Gong Shaoji
Wang JianaoThis paper adopts the 8×19 organic core specified by the national standard (GB1102-74).
2. When the internal sedimentation exceeds the pipe diameter, a larger diameter should be used. 8. The bamboo pieces must be made of green bamboo with a flat bamboo core, with a continuous surface size of not less than 4×1cm and a length of not less than 4. The shapes are square sand grooves, rectangular masonry, and disturbed masonry. The area can be converted into spots after the fat pipe is used.
Shift (silver)
Shift location
Designer shift room
Factory operation situation
Safety operation ticket
Work report
Road
[Responsible person
Influence of materials
1, open and adjust ventilation situation (activation and time) 2, 9. Gas inspection results and report date 4. Opinions of the person in charge of the proposed anti-poison and explosion-proof measures (installation of protective equipment, artificial ventilation, etc.) Annual physical examination or physical examination results before the re-entry (in words) Safety officer's opinions and common gas allowable concentration and explosion range recommendations Short-term contact limit value Gas name (take air ratio ngmppm mg/mppm Decomposition cylinder General iodine iodine ion Explosion range K (volume)) 4.3-±5.5
12.5~74.2
200180
0,28]B,B~12. 8
（Signature）
(Signature）
Type estimation stock reason
Not round wall dye
Simple Xin Hua Mou Lin
Solution oxygen depression some do not
Note. Above, and below the common gas acid set listed in this table are oxygen, group, chlorine and carbon difluoride, among which (1) the low content of oxygen should meet the requirements of Article 3.3.2; (2) group with the whole open outside, can be exempted from testing, (8) oxygen content meets the requirements, ammonia and disulfide can be exempted from testing. Table, the case of the minimum reduction value of the inspection fiber with the "Industrial Enterprise Design Environmental Standard T33B-1 and related environmental standards.
, the short-term exposure limit refers to the weighted average value of the concentration of harmful gases within 15m1n. At any time during the working day, the concentration of toxic gases should not be greater than this value. The operator should not be able to perform the work under this concentration for more than 15m1n. The maximum time for each work to be corrected is not less than 60ms0.5-15-5
Explanation of the terms used in this regulation
1. The terms that indicate that it is very strict and must be done in this way; positive terms use "must" and negative terms use "strictly prohibited". 2. The terms that indicate that it is strict and should be done in this way under normal circumstances use "should" for positive terms and "should not" or "must not" for negative terms. 3. The terms that indicate that a slight choice is allowed and that it should be done first when conditions permit use "should" or "may" for positive terms and "should not" for negative terms. 5—15—6
Additional Notes
List of the editorial unit, participating units
and main drafters of this standard
Main department: Tianzhang Municipal Engineering Bureau
Main drafters: Gong Shaoji
Wang JianaoThis paper adopts the 8×19 organic core specified by the national standard (GB1102-74).
2. When the internal sedimentation exceeds the pipe diameter, a larger diameter should be used. 8. The bamboo pieces must be made of green bamboo with a flat bamboo core, with a continuous surface size of not less than 4×1cm and a length of not less than 4. The shapes are square sand grooves, rectangular masonry, and disturbed masonry. The area can be converted into spots after the fat pipe is used.
Shift (silver)
Shift location
Designer shift room
Factory operation situation
Safety operation ticket
Work report
Road
[Responsible person
Influence of materials
1, open and adjust ventilation situation (activation and time) 2, 9. Gas inspection results and report date 4. Opinions of the person in charge of the proposed anti-poison and explosion-proof measures (installation of protective equipment, artificial ventilation, etc.) Annual physical examination or physical examination results before the re-entry (in words) Safety officer's opinions and common gas allowable concentration and explosion range recommendations Short-term contact limit value Gas name (take air ratio ngmppm mg/mppm Decomposition cylinder General iodine iodine ion Explosion range K (volume)) 4.3-±5.5
12.5~74.2
200180
0,28]B,B~12. 8
（Signature）
(Signature）
Type estimation stock reason
Not round wall dye
Simple Xin Hua Mou Lin
Solution oxygen depression some do not
Note. Above, and below the common gas acid set listed in this table are oxygen, group, chlorine and carbon difluoride, among which (1) the low content of oxygen should meet the requirements of Article 3.3.2; (2) group with the whole open outside, can be exempted from testing, (8) oxygen content meets the requirements, ammonia and disulfide can be exempted from testing. Table, the case of the minimum reduction value of the inspection fiber with the "Industrial Enterprise Design Environmental Standard T33B-1 and related environmental standards.
, the short-term exposure limit refers to the weighted average value of the concentration of harmful gases within 15m1n. At any time during the working day, the concentration of toxic gases should not be greater than this value. The operator should not be able to perform the work under this concentration for more than 15m1n. The maximum time for each work to be corrected is not less than 60ms0.5-15-5
Explanation of the terms used in this regulation
1. The terms that indicate that it is very strict and must be done in this way; positive terms use "must" and negative terms use "strictly prohibited". 2. The terms that indicate that it is strict and should be done in this way under normal circumstances use "should" for positive terms and "should not" or "must not" for negative terms. 3. The terms that indicate that a slight choice is allowed and that it should be done first when conditions permit use "should" or "may" for positive terms and "should not" for negative terms. 5—15—6
Additional Notes
List of the editorial unit, participating units
and main drafters of this standard
Main department: Tianzhang Municipal Engineering Bureau
Main drafters: Gong Shaoji
Wang Jianao
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