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JICOSH Home > Laws > Ordinance on Safety and Health of Work under High Pressure

Ordinance on Safety and Health of Work under High Pressure

(Revised in terms of the Title March 19, 1977 by Ministry of Labour Ordinance No. 2)
Ministry of Labour Ordinance No. 40, September 30, 1972
Latest Amendments:
Ministry of Labour Ordinance No. 41 of October 31, 2000

In Japanese

Attached Table 1
Pressure(MPa) Duration of work under high pressure
 (or in compressed air)		 Pressure reducing (decompression) rate (min.) Body
(internal)
gas
pressure coefficient		 Pressure
reducing
( or 
decompression)
time
(min.)
between works		 Pressure
reducing
(or  decompression)
time
(min.)
after work		 Duration of
2nd-time work
under
high pressure
(or
incompressed air) (min.)
0.15
MPa		 0.12
MPa		 0.09
MPa		 0.06
MPa		 0.03
MPa
0.10 or more and not more than 0.12 Not more than 30 minutes



1 1.2 30 30 335
30 min. or more and not more than 60 min.



1 1.4 30 30 305
60 min. or more and not more than 90 min.



1 1.5 30 30 285
90 min. or more and not more than 120 min.



1 1.6 30 30 265
120 min. or more and not more than 150 min.



2 1.7 60 30 270
150 min. or more and not more than 180 min.



3 1.8 60 30 250
180 min. or more and not more than 210 min.



4 1.9 60 30 230
210 min. or more and not more than 240 min.



5 1.9 60 30 230
240 min. or more and not more than 270 min.



5 2.0 150 45 135
270 min. or more and not more than 300 min.



6 2.0 150 45 105
300 min. or more and not more than 330 min.



6 2.0 150 45 75
330 min. or more and not more than 360 min.



7 2.1 150 45 45
0.12 or more and not more than 0.14 Not more than 30 minutes



1 1.3 30 30 295
30 min. or more and not more than 60 min.



1 1.5 30 30 270
60 min. or more and not more than 90 min.



1 1.6 30 30 255
90 min. or more and not more than 120 min.



3 1.7 60 30 255
120 min. or more and not more than 150 min.



5 1.8 60 30 240
150 min. or more and not more than 180 min.



6 1.9 60 30 215
180 min. or more and not more than 210 min.



8 2.0 60 30 210
210 min. or more and not more than 240 min.



10 2.0 60 30 210
240 min. or more and not more than 270 min.



10 2.1 150 45 130
270 min. or more and not more than 300 min.



10 2.1 150 45 100
300 min. or more and not more than 330 min.



12 2.2 150 45 70
0.14 or more and not more than 0.16 Not more than 30 minutes



1 1.3 30 30 270
30 min. or more and not more than 60 min.



1 1.5 30 30 250
60 min. or more and not more than 90 min.



3 1.7 60 30 235
90 min. or more and not more than 120 min.



5 1.8 60 30 225
120 min. or more and not more than 150 min.



7 1.9 60 30 210
150 min. or more and not more than 180 min.



9 2.0 60 30 200
180 min. or more and not more than 210 min.



11 2.1 90 45 210
210 min. or more and not more than 240 min.



15 2.2 150 45 135
240 min. or more and not more than 270 min.



18 2.2 150 45 115
270 min. or more and not more than 300 min.



23 2.2 150 45 85
0.16 or more and not more than 0.18 Not more than 30 minutes



1 1.3 30 30 275
30 min. or more and not more than 60 min.



5 1.6 30 30 245
60 min. or more and not more than 90 min.



9 1.8 60 30 235
90 min. or more and not more than 120 min.



13 1.9 60 30 225
120 min. or more and not more than 150 min.


2 15 2.0 60 30 215
150 min. or more and not more than 180 min.


5 20 2.1 90 45 205
180 min. or more and not more than 210 min.


8 25 2.1 90 45 170
210 min. or more and not more than 240 min.


9 30 2.2 150 45 110
240 min. or more and not more than 270 min.


10 35 2.2 150 45 75
270 min. or more and not more than 300 min.


17 35 2.2 150 45 50
0.18 or more and not more than 0.20 Not more than 30 minutes



1 1.4 30 30 240
30 min. or more and not more than 60 min.



8 1.6 30 30 220
60 min. or more and not more than 90 min.



16 1.8 60 30 215
90 min. or more and not more than 120 min.


7 15 2.0 90 30 195
120 min. or more and not more than 150 min.


9 20 2.1 90 45 200
150 min. or more and not more than 180 min.


11 30 2.1 90 45 170
180 min. or more and not more than 210 min.


15 35 2.2 150 45 100
210 min. or more and not more than 240 min.


20 40 2.2 150 45 85
240 min. or more and not more than 270 min.


25 45 2.2. 150 45 50
0.20 or more and not more than 0.22 Not more than 30 minutes



1 1.4 30 30 240
30 min. or more and not more than 60 min.



11 1.7 60 30 225
60 min. or more and not more than 90 min.


8 15 1.9 60 30 210
90 min. or more and not more than 120 min.


12 20 2.0 90 30 210
120 min. or more and not more than 150 min.


15 30 2.1 90 45 180
150 min. or more and not more than 180 min.


23 40 2.1 90 45 145
180 min. or more and not more than 210 min.


25 45 2.2 150 45 90
210 min. or more and not more than 240 min.


30 50 2.2 150 45 60
240 min. or more and not more than 270 min.


31 60 2.2 150 45 30
0.22 or more and not more than 0.24 Not more than 30 minutes



1 1.4 30 30 215
30 min. or more and not more than 60 min.



14 1.7 60 30 200
60 min. or more and not more than 90 min.


9 20 1.9 60 30 185
90 min. or more and not more than 120 min.


18 30 2.0 90 30 180
120 min. or more and not more than 150 min.


26 35 2.1 120 45 135
150 min. or more and not more than 180 min.

5 30 40 2.2 150 45 95
180 min. or more and not more than 210 min.

10 30 50 2.2 150 45 65
210 min. or more and not more than 240 min.

14 30 60 2.2 150 45 40
0.24 or more and not more than 0.25 Not more than 30 minutes



1 1.5 30 30 210
30 min. or more and not more than 60 min.



20 1.8 60 30 195
60 min. or more and not more than 90 min.


13 25 2.0 90 30 180
90 min. or more and not more than 120 min.


19 35 2.1 120 45 150
120 min. or more and not more than 150 min.


33 45 2.1 120 45 110
150 min. or more and not more than 180 min.

6 35 50 2.2 150 45 70
180 min. or more and not more than 210 min.

15 35 55 2.2 150 45 50
210 min. or more and not more than 240 min.

18 35 65 2.2 150 45 20
0.25 or more and not more than 0.27 Not more than 30 minutes



2 1.5 30 30 180
30 min. or more and not more than 60 min.


10 15 1.8 60 30 170
60 min. or more and not more than 90 min.


17 30 2.0 90 30 150
90 min. or more and not more than 120 min.

9 25 35 2.1 120 45 120
120 min. or more and not more than 150 min.

15 30 45 2.2 150 45 85
150 min. or more and not more than 180 min.

16 35 55 2.2 150 45 55
180 min. or more and not more than 210 min.

21 40 60 2.2 150 45 30
0.27 or more and not more than 0.29 Not more than 15 minutes




1.3 30 30 195
15 min. or more and not more than 30 min.



2 1.5 30 30 180
30 min. or more and not more than 45 min.


3 5 1.7 60 45 165
45 min. or more and not more than 60 min.


13 15 1.9 60 45 150
60 min. or more and not more than 75 min.


18 20 2.0 90 45 135
75 min. or more and not more than 90 min.

4 20 30 2.0 90 45 120
90 min. or more and not more than 105 min.

11 25 40 2.1 120 45 105
105 min. or more and not more than 120 min.

13 30 40 2.1 120 45 90
120 min. or more and not more than135 min.

15 35 45 2.2 150 60 75
135 min. or more and not more than 150 min.

18 35 45 2.2 150 60 60
150 min. or more and not more than165 min.

23 35 50 2.2 150 60 45
165 min. or more and not more than 180 min.

20 40 55 2.2 150 60 30
180 min. or more and not more than 195 min.

24 40 60 2.2 150 60 15
195 min. or more and not more than 210 min.

26 40 75 2.2
60 0
0.29 or more and not more than 0.31 Not more than 15 minutes



2 1.3 30 30 180
15 min. or more and not more than 30 min.



9 1.6 30 30 165
30 min. or more and not more than 45 min.


11 15 1.8 60 45 150
45 min. or more and not more than 60 min.


18 25 1.9 60 45 135
60 min. or more and not more than 75 min.


25 35 2.0 90 45 120
75 min. or more and not more than 90 min.

10 25 40 2.0 90 45 105
90 min. or more and not more than 105 min.

12 30 45 2.1 120 45 90
105 min. or more and not more than 120 min.

15 35 50 2.1 150 60 75
120 min. or more and not more than135 min.

20 40 50 2.2 150 60 60
135 min. or more and not more than 150 min.

20 40 60 2.2 150 60 45
150 min. or more and not more than165 min.

22 40 65 2.2 150 60 30
165 min. or more and not more than 180 min.

25 40 70 2.2 150 60 15
180 min. or more and not more than 195 min.
5 25 40 75 2.2
60 0
0.31 or more and not more than 0.33 Not more than 15 minutes



2 1.4 60 30 165
15 min. or more and not more than 30 min.



13 1.6 60 30 150
30 min. or more and not more than 45 min.


14 20 1.8 90 45 135
45 min. or more and not more than 60 min.


21 30 1.9 90 45 120
60 min. or more and not more than 75 min.

13 25 35 2.0 120 45 105
75 min. or more and not more than 90 min.

15 35 45 2.1 120 45 90
90 min. or more and not more than 105 min.
5 15 35 55 2.1 120 45 75
105 min. or more and not more than 120 min.
9 15 40 60 2.1 150 60 60
120 min. or more and not more than135 min.
10 20 40 65 2.1 150 60 45
135 min. or more and not more than 150 min.
12 25 40 65 2.2 150 60 30
150 min. or more and not more than165 min.
14 25 40 70 2.2 150 60 10
165 min. or more and not more than 180 min.
16 25 40 75 2.2
60 0
0.33 or more and not more than 0.35 Not more than 15 minutes



2 1.4 60 30 150
15 min. or more and not more than 30 min.



17 1.6 60 30 135
30 min. or more and not more than 45 min.


15 25 1.8 90 45 120
45 min. or more and not more than 60 min.

5 20 35 2.0 120 45 105
60 min. or more and not more than 75 min.

11 25 50 2.0 120 45 90
75 min. or more and not more than 90 min.

18 30 60 2.0 120 45 75
90 min. or more and not more than 105 min.

25 35 65 2.1 150 60 60
105 min. or more and not more than 120 min.
9 25 40 65 2.1 150 60 45
120 min. or more and not more than135 min.
14 25 40 70 2.2 150 60 30
135 min. or more and not more than 150 min.
16 25 40 75 2.2 150 60 15
150 min. or more and not more than165 min.
18 25 40 80 2.2
60 0
0.35 or more and not more than 0.37 Not more than 15 minutes



2 1.4 60 30 135
15 min. or more and not more than 30 min.



21 1.7 60 45 120
30 min. or more and not more than 45 min.


20 25 1.9 90 45 105
45 min. or more and not more than 60 min.

9 25 35 2.0 120 45 90
60 min. or more and not more than 75 min.
5 15 30 50 2.0 120 45 75
75 min. or more and not more than 90 min.
12 20 30 60 2.1 120 45 60
90 min. or more and not more than 105 min.
14 25 35 65 2.1 150 60 45
105 min. or more and not more than 120 min. 5 15 25 35 70 2.1 150 60 30
120 min. or more and not more than135 min. 8 20 25 35 70 2.2 150 60 15
135 min. or more and not more than 150 min. 11 20 25 40 70 2.2 150 60 0
0.37 or more and not more than 0.4 Not more than 15 minutes



2 1.4 60 30 120
15 min. or more and not more than 30 min.



25 1.7 90 45 105
30 min. or more and not more than 45 min.


15 35 1.9 90 45 90
45 min. or more and not more than 60 min.

12 20 45 2.0 120 45 75
60 min. or more and not more than 75 min.
7 20 30 55 2.0 120 45 60
75 min. or more and not more than 90 min.
15 20 35 65 2.1 150 60 45
90 min. or more and not more than 105 min. 7 15 20 35 70 2.1 150 60 30
105 min. or more and not more than 120 min. 11 15 25 35 70 2.2 150 60 15
120 min. or more and not more than135 min. 11 20 25 40 70 2.2
60 0


INDEX
I / II / III / IV / V / VI
Table1 / Table2 / Table3


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