CB 1087.6-1988 Ship engine fitter repair work hours quota boiler valve parts and general parts
Some standard content:
China State Shipbuilding Corporation Department Standard
CB1087.6-88
Ship Engine Fitter Repair Man-hour Quota
Boiler Valves and General Parts
1988-07-26 Issued
China State Shipbuilding Corporation Issued
1988-11-01 Implementation
China State Shipbuilding Corporation Department Standard
CB1087.6-88
Ship Engine Fitter Repair Man-hour Quota·Boiler, Valves and General Parts Classification Number: U02
Subject Content and Scope of Application
This standard specifies the man-hour quota for ship engine fitters to repair boilers, valves and general parts. This standard applies to the disassembly inspection, repair assembly, installation and commissioning of routine repairs of ship boilers, valves and general parts. 2 General Provisions
2.1 The working hours quotas in this standard include: basic operation time, auxiliary time, work place arrangement time, rest and physiological needs time, preparation and end time.
2.2 The working hours quotas in this standard are given under typical conditions. They can be corrected according to the actual difficulty level during use. The correction coefficient K shall be in accordance with the instructions for use of the relevant chapters.
2.3 The technical grades specified in this standard are determined in accordance with the "Ship Industry Worker Grade Standards" issued by China State Shipbuilding Corporation in 1983.
3 Boiler hydraulic test
3.1 See Figure 1 for structural type
Approved by China State Shipbuilding Corporation on July 26, 1988 and implemented on November 1, 1988
Operation content
1087.6-88
Make preparations for the test, close all valves and cocks on board, press the safety valve with a pressure plate, disassemble and install valves, fill the boiler with water, and equip hydraulic tools for hydraulic pressure inspection.
See Table 1 for working hours quota
Table 1 Instructions for use
See this table for working hours for oil-fired boilers and waste steam boilers for pressure test; a.
If a blind plug is required during the pressure test, add 1 hour for each plug. Boiler accessories
4.1 Operation content
Technical level
Disassembly and inspection: furnace door, fire-watching hole, fuel injector, manhole door, handhole door, etc. are disassembled as a whole on board, cleaned and inspected a.
Repair and installation
Furnace door: replace the umbrella-shaped wind cover, replace the mattress and bolts, etc., assemble and install them properly, the fan blades and operating mechanism, fuel injector frame are flexible to adjust, and the loose parts of the fan blades are adjusted tightly,
Fire-watching hole: replace the glass, adjust the explosion-proof cover flexibly, replace the mattress and install it properly; fuel injector: replace the atomizer sheet with a new grinding and matching, replace the mattress, clear the oil circuit and install: manhole door, handhole door, the contact surface between the hole cover and the hole mouth is coated with blue oil powder, check and correct it, replace the asbestos sealing ring, and install the hole cover. 2
4.2 The working hours are shown in Table 2
Fire hole
Injector
Manhole door
Handhole door
D or B×L
≤500
>500~600
>600~800
>800~1000
>30~40
>40~50
>50~75
>75~100
300×375|| tt||350×450
75×112
100×150
CB1087.6—88
Disassembly and inspection
For the repair and installation hours of the injector with unregulated mist in Table 2, take K=0.7. 4.3
Flat-plate water level gaugewww.bzxz.net
For the knot type, see Figure 2
Repair and installation
Technical level
5.2 Operation content
CB1087.6—88
a. Disassembly: the whole set of flat-plate water level gauge is disassembled and transported to the workshop; dismantling inspection: the plug, glass gland, glass, etc. are disassembled, the stuffing is dug out, cleaned and inspected; b.
Repair and assembly: the plug, glass gland, glass, etc. are corrected and assembled, the mattress and stuffing are replaced, and the water pressure tools are equipped for pressure testing and c.
Installation; the whole set of flat-plate water level gauge is transported from the workshop to the ship, the mattress is replaced, and the installation is completed; d.
Plug grinding: the plug valve body and valve core are ground to meet the requirements. e.
5.3 The working hours are shown in Table 3
>300～400
>400～500
Disassembly, inspection, repair, assembly and installation
Plug grinding
Working hours h/piece
Technical level
5.4 Instructions for use of Table 3
The working hours of this table are formulated according to the double-sided glass flat water level gauge. The working hours for disassembly, inspection, repair and assembly of the single-sided glass flat water level gauge are a.
b. For more than two sets of water level gauges, K=0.8;
c. If the old glass of the glass tube water level gauge is removed, the new one is taken out, and the length is ground and installed on the ship, the first one is 1.5h, and the second one and each one is 1h.
6 Stop valve
6.1 Operation content
Disassembly: disassemble the whole from the ship to the workshop; a.
Disassembly inspection: the hand wheel, valve, valve cover, valve stem, stopper, gland, etc. are all disassembled, the stuffing is dug out, cleaned and inspected; b.
Grinding: the grinding of valve and valve seat meets the requirements; c.
Assembly: the hand wheel, valve, valve cover, valve stem, stopper, gland, etc. are cleaned and assembled, and the mattress and stuffing are replaced; d.
Water pressure: equip with water pressure tools for pressure test and inspection; e.
Installation: transport from the workshop to the ship, and the mattress is replaced and installed. f.
The working time quota is shown in Table 4.
6.3 Instructions for use of Table 4
CB1087.6—88
Hydraulic pressure installation
Disassembly, inspection and research
Technical level
The working hours in this table are based on 1 to 5 valves. For 6 to 10 valves, K=0.9; for 11 to 15 valves, K=0.85; for more than 15 valves, K=a
The grinding hours are based on copper flat-mouth valves. K=0.8 is taken for oblique-mouth valves; K=1.25 is taken for stainless steel valvesb.
If the valves are dismantled, inspected, ground and assembled on site, K=1.2 is taken as the working hours. c
7 Gate valve
7.1 Operation content
Disassembly: disassemble the whole from the ship to the workshop, a.
1087.6—88
Disassembly inspection: hand wheel, valve core, valve cover, valve stem, guide block, pointer, etc. are all disassembled, filler is dug out, cleaned and inspected b.
Grinding: valve core and valve seat are scraped and grinded to meet the requirements, assembly: hand wheel, valve core, valve cover, valve stem, guide block, pointer, etc. are corrected, cleaned and assembled, mattress and filler are replaced, d.
Water pressure: equip with water pressure tools for pressure test and inspection, e.
f. Installation: transported from the workshop to the ship, the mattress is replaced and installed. 7.2 The working hours are shown in Table 5
Instructions for use of Table 5
Disassembly inspection and research
Technical level
The working hours in this table are based on 1 to 5 valves. For 6 to 10 valves, K=0.9 is taken, and for 11 to 15 valves, K=0.85 is taken; for more than 15 valves, K= is taken. The grinding hours are formulated according to copper valves and valve seats, and K=1.3 is taken for stainless steel valves and valve seats; if the valves are dismantled, inspected, ground, and assembled on site, K=1.2 is taken; c.
The hydraulic working hours are formulated according to one side, and K=1.7 is taken for the hydraulic working hours on both sides. d.
8 Pressure reducing valve
8.1 See Figure 3 for the structural type
8.2: Operation content
a. Disassembly: The valves are dismantled as a whole on the ship and transported to the workshop; CB1087.6-88
b. Disassembly inspection: upper cover, lower cover, adjusting bolts, springs, pistons, piston rings, diaphragms, main valves, auxiliary valves, etc. are all disassembled, cleaned and inspected;
C. Repair and assembly: valve and valve seat grinding, diaphragm replacement, spring correction, upper cover, lower cover, adjusting bolts, pistons, piston rings, main valves, auxiliary valves, etc. are corrected, cleaned and assembled. Equipped with hydraulic tools for pressure test inspection; d, installation: transported from the workshop to the ship, the mattress replacement and installation are completed; e, commissioning: pressure calibration on board.
8.3 The working hours are shown in Table 6
Disassembly and disassembly inspection repair assembly installation
installation and commissioning
Technical level
CB1087.6—88
8.4 The working hours in Table 6 are for steam pressure reducing valves, and the working hours for air pressure reducing valves are the same. 9 Steam safety valve
9.1 The structural type is shown in Figure 4
9.2 Operation content
Disassembly: Disassemble the steel wire, shackle and other accessories on the ship, and transport the whole to the workshop. a
b. Dismantle and inspect, disassemble the valve, valve stem, valve cover, spring, adjustment, valve body, etc., clean and inspect; C. Repair and assembly: Grind the valve and valve seat, grind the spring end face vertically, correct the valve, valve stem, valve cover, adjustment ring, valve body, etc., clean and assemble, and equip the hydraulic tool for pressure test and inspection; d. Installation: transport from the workshop to the ship, replace the mattress, install the valve as a whole, and install the steel wire, shackle and other accessories; e. Debugging: calibrate and inspect with steam after the boiler is ignited. 9.3 The working hours are shown in Table 7
Disassembly, dismantling, inspection, repair, assembly, installation and commissioning workers
Technical level
9.4 The working hours in Table 7 are formulated according to the double-joint type. The single-joint disassembly working hours take K=.0.8; the disassembly, inspection, repair and assembly working hours take K=0.6; the installation working hours take K=0.8; the commissioning working hours take K=0.6.9
10 Air safety valve
10.1 The structural type is shown in Figure 5
10.2 Operation content
a, disassembly: dismantle the whole body from the ship to the workshop; CB
b. Disassembly inspection: springs, spring seats, valves, adjusting rings, valve bodies, etc. are all disassembled, cleaned and inspected, repair and assembly: valves and valve seats are ground, springs, spring seats, valves, adjusting rings, valve bodies, etc. are corrected, cleaned and assembled. Equipped with hydraulic tools c.
Carry out pressure test inspection;
d. Installation: shipped from the workshop to the ship, the mattress replacement installation is completed; e. Debugging: calibrated and inspected with compressed air on board. 10.3 Man-hour quota See Table 8
10.4 Instructions for use of Table 8
Disassembly Inspection Repair Assembly Installation
Installation and Debugging
Technical level
The man-hours in this table are formulated based on 1 to 5 valves. For 6 to 10 valves, K=0.9; for 11 to 15 valves, K=0.45; for more than 15 valves, K= The man-hours for repair and assembly in this table are formulated according to stainless steel valves and valve seats. If the valves and valve seats are made of copper, K=0.95b.
The man-hours for debugging in this table are formulated according to the installation of air safety valves on pipelines and air bottles. The man-hours for debugging air compressor safety valves are 1h each. c.
11 Flange packing cock
11.1 See Figure 6 for the structural type
11.2 Operation content
Disassembly: disassemble the whole from the ship to the workshop; a.
CB10876-88
Disassembly inspection: disassemble the handle, gland, valve core, valve body, etc., dig out the packing, clean and inspect; b.
Grinding: scrape and grind the wide body and valve core to meet the requirements; c.
Assembly: modify, clean and assemble the handle, gland, valve core, valve body, etc., and replace the mattress and packing; d.
Water pressure: equip with water pressure tools for pressure test and inspection; Installation: transport from the workshop to the ship, and the mattress is replaced and installed. f.
Management time quota see Table 9
Disassembly inspection and research
Technical level
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