Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
According to the Document DIAN HUO ZI No. 21—“Notification on Publishing Quotas on Maintenance Device and Architectural Area of Fossil Fuel Power Plant (Tentative)”—issued by the Ministry of Power Industry, this standard has made considerable modifications and expanded the applicability. This standard corresponds to the basic condition of current power device maintenance and meets the requirements for device maintenance and overhaul of power plant.
Standard for Furnishing Maintenance Device and Architectural Area of Fossil Fuel Power Plant
1 General
1.0.1 This standard is developed with view to implementing the national basic policies on construction in electric power construction, reflecting the national economic policies, promoting regional cooperation in overhaul of power device, and improving the utilization and production efficiencies of maintenance device, the benefits and management level of power plant.
1.0.2 This standard is applicable to the newly-built coal-fired power plants with 2~6 units of 50~600MW capacity installed.
For extended power plants, the maintenance workshop area shall be furnished comprehensively considering this standard and the realities of the existing plant.
1.0.3 For gas-fired and oil-fired power plants, the devices under consideration to be furnished may be appropriately increased or decreased by reference to this standard.
1.0.4 This standard can play as the basis for maintenance device selection in fossil fuel power plant engineering and for engineering budget review by competent departments.
2 Classification of Maintenance Production Task
2.0.1 The maintenance production tasks of fossil fuel power plant may be classified into three classes:
Class I: Where there are good conditions for regional cooperation, the processing of both large and medium-sized parts and accessories can be outsourced, and the maintenance production tasks of the plant mainly are to address the maintenance of common parts and accessories in routine maintenance and to process common spares.
Class II: For the power plants located in remote areas where there are no regional cooperation conditions for machining, the parts and accessories to be processed for major and minor overhauls can be undertaken by the plant itself.
Class III: Major and minor overhauls can be consigned or bidding-based outsourced. The fossil fuel power plants by which the purchasing and processing of spares and accessories are entrusted to affiliated company shall not be arranged with workshop.
2.0.2 The class of maintenance production task of fossil fuel power plant shall be defined at preliminary design stage by competent grid (provincial) administration or by the investor (owner) and be determined through design review.
3 Scale of and Furnishing Device to Maintenance Workshop
3.0.1 The scales of and device to be furnished to maintenance workshop of fossil fuel power plants may be classified by unit capacity into three levels—100MW or below, 300 MW or below, 600 MW or above.
3.0.2 Newly-built power plants, regardless of the units installed at the current phase, are uniformly equipped with 2 sets of standard maintenance device and are generally arranged with one maintenance workshop.
3.0.3 Maintenance devices, in principle, shall be so furnished that no frame planer or vertical lathe (surfacing lathe) is arranged (power plants with fan mill may be arranged with one set of vertical lathe). Power plants in remote areas which are of poor local cooperation conditions may be arranged with one set of vertical lathe or lightweight frame planer.
3.0.4 For the criteria for furnishing devices to the maintenance workshop of fossil fuel power plant, see Table 3.0.4.
Table 3.0.4 Criteria for Furnishing Devices to the Maintenance Workshop of
Note: If there are more than 4 units, one center lathe may be added appropriately.
4 Furnishing Overhaul Device to Steam Turbine and Boiler Workshops
4.0.1 Furnishing overhaul device to steam turbine and boiler workshops of fossil fuel power plant shall meet the requirements for workshop routine maintenance and eliminating device defects.
4.0.2 Overhaul devices for of steam turbine and boiler workshops may be furnished according to the three classes—100MW or below, 300MW or below, 600MW or above.
4.0.3 For power plants of Class III maintenance production tasks, overhaul device to be furnished to steam turbine and boiler overhaul workshops may be appropriately increased or decreased according to Table 4.0.3.
Foreword ii 1 General 2 Classification of Maintenance Production Task 3 Scale of and Furnishing Device to Maintenance Workshop 4 Furnishing Ovehaul Device to Steam Turbine and Boiler Workshops 5 Criteria for Furnishing Architectrual Area of Maintenance Workshop Annex A Explanation of Wording in This Standard Additional Explanation: Explanation of Provisions
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
According to the Document DIAN HUO ZI No. 21—“Notification on Publishing Quotas on Maintenance Device and Architectural Area of Fossil Fuel Power Plant (Tentative)”—issued by the Ministry of Power Industry, this standard has made considerable modifications and expanded the applicability. This standard corresponds to the basic condition of current power device maintenance and meets the requirements for device maintenance and overhaul of power plant.
Standard for Furnishing Maintenance Device and Architectural Area of Fossil Fuel Power Plant
1 General
1.0.1 This standard is developed with view to implementing the national basic policies on construction in electric power construction, reflecting the national economic policies, promoting regional cooperation in overhaul of power device, and improving the utilization and production efficiencies of maintenance device, the benefits and management level of power plant.
1.0.2 This standard is applicable to the newly-built coal-fired power plants with 2~6 units of 50~600MW capacity installed.
For extended power plants, the maintenance workshop area shall be furnished comprehensively considering this standard and the realities of the existing plant.
1.0.3 For gas-fired and oil-fired power plants, the devices under consideration to be furnished may be appropriately increased or decreased by reference to this standard.
1.0.4 This standard can play as the basis for maintenance device selection in fossil fuel power plant engineering and for engineering budget review by competent departments.
2 Classification of Maintenance Production Task
2.0.1 The maintenance production tasks of fossil fuel power plant may be classified into three classes:
Class I: Where there are good conditions for regional cooperation, the processing of both large and medium-sized parts and accessories can be outsourced, and the maintenance production tasks of the plant mainly are to address the maintenance of common parts and accessories in routine maintenance and to process common spares.
Class II: For the power plants located in remote areas where there are no regional cooperation conditions for machining, the parts and accessories to be processed for major and minor overhauls can be undertaken by the plant itself.
Class III: Major and minor overhauls can be consigned or bidding-based outsourced. The fossil fuel power plants by which the purchasing and processing of spares and accessories are entrusted to affiliated company shall not be arranged with workshop.
2.0.2 The class of maintenance production task of fossil fuel power plant shall be defined at preliminary design stage by competent grid (provincial) administration or by the investor (owner) and be determined through design review.
3 Scale of and Furnishing Device to Maintenance Workshop
3.0.1 The scales of and device to be furnished to maintenance workshop of fossil fuel power plants may be classified by unit capacity into three levels—100MW or below, 300 MW or below, 600 MW or above.
3.0.2 Newly-built power plants, regardless of the units installed at the current phase, are uniformly equipped with 2 sets of standard maintenance device and are generally arranged with one maintenance workshop.
3.0.3 Maintenance devices, in principle, shall be so furnished that no frame planer or vertical lathe (surfacing lathe) is arranged (power plants with fan mill may be arranged with one set of vertical lathe). Power plants in remote areas which are of poor local cooperation conditions may be arranged with one set of vertical lathe or lightweight frame planer.
3.0.4 For the criteria for furnishing devices to the maintenance workshop of fossil fuel power plant, see Table 3.0.4.
Table 3.0.4 Criteria for Furnishing Devices to the Maintenance Workshop of
Fossil Fuel Power Plant
Quantities in Units
Unit capacity of power plant ≤100MW ≤300MW ≥600MW
Classification of maintenance task I II I II I II
(I) Metal workshop
(II) Center lathe
C616 φ320×1000 1 2 1 2 1 2
CA6140 φ400×1500 1 1 1 1 1 2
CA6140 φ400×2000 1 1 1 — 1 1
CA6161 φ610×2000 — — — 1 1 1
CW6163 φ630×3000 — — — 1 — 1
C61100 φ1000×5000 — — — — — 1
Slotter
B5032 L=320 1 1 1 1 1 —
B5050 L=500 — — — — — 1
Universal cylindrical grinder
M1432 φ320×1000 — — 1 — 1 —
M1432 φ320×3000 — — — 1 — 1
Surface grinder M7130 300×1000 1 1 1 1 1 1
Hydraulic hacksaw machine
G7025 φ250 — — 1 1 1 1
G72 φ220 1 1 — — — —
Universal miller X6232B 320×1320 1 1 1 1 1 1
Vertical knee and column type miller
X52K 320×1250 — — — 1 1 —
X53K 400×1600 — — — — 1
Radial drill
Z3040×16 φ40 — — — — 1 1
X3050×16 φ50(φ63) 1 1 1 1 — —
Z3080×16 φ80 — — — — 1 1
Shaper
B6063F(BC6063C)L=650 1 1 1 1 1 1
B6080(BY60100C)L=900 1 1 2
Disk sander
M3320 dust-poof 2 2 2 2 2 2
M3340 dust-poof 1 1 1 1 1 2
Fork lift
1t 1 1 — — — —
2t — — 1 1 — —
3t — — — — 1 1
Layout block (plate)
1500×1000 1 1 — — — —
1500×3000 — — 1 1 1 1
Crown block
3t (lifting height of 6m) (motor-driven) 1 1 — — — —
5t (lifting height of 6.5m) (motor-driven) — — 1 1 1 1
Water-cooled plasma cutter — — 1 1 1 1
(II) Riveting & welding workshop
3-roll plate bender
W11-12×2000 — 1 — — — —
W11-20×2000 — — — 1 — 1
Plate shearer
Q11-6×2000 1 — 1 — 1 —
Q11-13×2500 — 1 — — — —
Q11Y-25×2500 — — — 1 — 1
DC welder AX3-500 1 1 1 1 1 1
AC welder BX3-300 1 1 1 1 1 1
Far infrared electrowelding oven 2YH-30 1 1 1 1 1 1
Crown block
1t, motor-driven (lifting height of 6m) 1 1 — — — —
3t, motor-driven (lifting height of 6m) — — 1 1 1 1
Acetylene cylinder Y1250-41/30 (pcs.) 10 10 10 15 15 20
Oxygen cylinder Y229-41/150 (pcs.) 10 10 10 15 15 20
(III) Hot forging workshop
Air hammer
C41-250 1 1 — — — —
C45-750 — — 1 1 1 1
Box resistance furnace
RX3-37-13 1350℃ — — — 1 1 1
RX3-60×6 950℃ 1 1 1 — — 1
Crown block
1t, motor-driven (lifting height of 6m) 1 1 — — — —
3t, motor-driven (lifting height of 6m) — — 1 1 1 1
Note: If there are more than 4 units, one center lathe may be added appropriately.
4 Furnishing Overhaul Device to Steam Turbine and Boiler Workshops
4.0.1 Furnishing overhaul device to steam turbine and boiler workshops of fossil fuel power plant shall meet the requirements for workshop routine maintenance and eliminating device defects.
4.0.2 Overhaul devices for of steam turbine and boiler workshops may be furnished according to the three classes—100MW or below, 300MW or below, 600MW or above.
4.0.3 For power plants of Class III maintenance production tasks, overhaul device to be furnished to steam turbine and boiler overhaul workshops may be appropriately increased or decreased according to Table 4.0.3.
Contents of DL/T 5059-1996
Foreword ii
1 General
2 Classification of Maintenance Production Task
3 Scale of and Furnishing Device to Maintenance Workshop
4 Furnishing Ovehaul Device to Steam Turbine and Boiler Workshops
5 Criteria for Furnishing Architectrual Area of Maintenance Workshop
Annex A Explanation of Wording in This Standard
Additional Explanation:
Explanation of Provisions
